Abstract

The present invention relates to a method for separating polyolefins using solution separation and, more specifically, to a method for separating polyolefins, which can separate each polyolefin, particularly high-density polyethylene and homopolypropylene, from a polyolefin complex with high purity by using solution separation using an aliphatic hydrocarbon with a relatively low boiling point as a solvent, and can reduce the cost required for the process.

IPC Classes  ?

• C08J 11/08 - Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
• B29B 17/02 - Separating plastics from other materials

Abstract

Provided is a method for removing a polymer produced in an olefin oligomerization reactor. According to the method for removing a polymer of the present invention, since a polymer in a reactor may be removed within a short time, less time and cost are invested as compared with the case of disassembling the reactor and removing the polymer by manpower. In addition, downtime due to reactor maintenance decreases and productivity is improved.

IPC Classes  ?

• C08F 210/02 - Ethene
• B01J 23/26 - Chromium
• C08F 4/69 - Chromium, molybdenum, tungsten or compounds thereof
• C08J 11/08 - Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components

Abstract

A low-dielectric polypropylene resin composition is provided for an inner covering of automobile communication cables and to an inner covering of automobile communication cables prepared therefrom. The polypropylene resin composition has low dielectric characteristics, and can be advantageously used as an inner covering of automobile communication cables.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08K 5/098 - Metal salts of carboxylic acids
• C08K 5/134 - Phenols containing ester groups
• C08K 5/38 - Thiocarbonic acidsDerivatives thereof, e.g. xanthates
• H01B 3/44 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes vinyl resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes acrylic resins

Abstract

The present invention provides: an ethylene oligomerization method in which an ethylene oligomer is produced by reacting a chromium complex and an organic aluminium compound with ethylene; and the ethylene oligomer thereof.

IPC Classes  ?

• C07C 2/32 - Catalytic processes with hydrides or organic compounds as complexes, e.g. acetyl-acetonates
• B01J 31/24 - Phosphines
• B01J 31/26 - Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups
• B01J 37/04 - Mixing
• C07C 11/02 - Alkenes

Abstract

A polypropylene resin composition with excellent impact resistance and a low level of volatile organic compounds discharged and to an article molded therefrom are provided. Since a polypropylene resin article prepared from the polypropylene resin composition has excellent impact resistance and a low level of volatile organic compounds discharged, it can be advantageously used as an automobile interior or exterior part, a toy for children, or a food storage container.

IPC Classes  ?

• C08L 23/14 - Copolymers of propene
• C08K 3/105 - Compounds containing metals of Groups 1 to 3 or of Groups 11 to 13 of the Periodic Table
• C08K 5/053 - Polyhydroxylic alcohols
• C08K 5/098 - Metal salts of carboxylic acids
• C08K 5/12 - EstersEther-esters of cyclic polycarboxylic acids
• C08K 5/526 - Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds

Abstract

A flame-retardant polyester resin composite composition is provided with balanced mechanical properties and excellent hydrolysis resistance and to a molded article molded therefrom. The flame-retardant polyester resin composite composition has balanced mechanical properties and excellent hydrolysis resistance. Thus, a flame-retardant polyester resin composite article prepared therefrom can be advantageously used as an automobile part or an electrical or electronic part.

IPC Classes  ?

• C08L 67/06 - Unsaturated polyesters
• C08K 3/40 - Glass
• C08K 5/134 - Phenols containing ester groups
• C08K 5/20 - Carboxylic acid amides
• C08K 7/14 - Glass
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds

Abstract

A polypropylene resin composition having excellent flame retardancy and excellent flame-retardant anti-release properties and to an article molded therefrom are provided. The polypropylene resin composition has excellent processability and flame-retardant anti-release properties. It can be advantageously used in home appliance parts and automobile parts.

IPC Classes  ?

• C08K 13/04 - Ingredients characterised by their shape and organic or inorganic ingredients
• C08K 3/32 - Phosphorus-containing compounds
• C08K 5/098 - Metal salts of carboxylic acids
• C08K 5/134 - Phenols containing ester groups
• C08K 5/24 - Derivatives of hydrazine
• C08K 5/3462 - Six-membered rings
• C08K 5/52 - Phosphorus bound to oxygen bound to oxygen only
• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
• C08K 7/14 - Glass
• C08L 23/12 - Polypropene

Abstract

The present disclosure relates to a separation method for a reaction product of olefin oligomerization, and a method and a device for preparing ethylene oligomer utilizing the separation method, and more specifically, a method capable of separating a mixture, which was generated after oligomerization reaction of ethylene and comprises a solvent and C8 or higher linear alpha olefins, into the solvent, C8 linear alpha olefin, and C10 or higher linear alpha olefin even by one-time treatment, and a method and a device for preparing ethylene oligomer utilizing the separation method.

IPC Classes  ?

• C08F 6/12 - Separation of polymers from solutions
• C08F 2/06 - Organic solvent
• C08F 10/02 - Ethene

Abstract

The present invention relates to a separation method for a mixture comprising a solvent and C4 or higher linear alpha olefins, and method and device for preparing ethylene oligomer utilizing the separation method, and more specifically, a method capable of separating a mixture, which was generated after oligomerization reaction of ethylene and comprises a solvent and C4 or higher linear alpha olefins, into the solvent, C6 or lower linear alpha olefin, and C8 or higher linear alpha olefin even by one-time treatment, and a method and a device for preparing ethylene oligomer utilizing the separation method.

IPC Classes  ?

• C07C 7/04 - Purification, separation or stabilisation of hydrocarbonsUse of additives by distillation
• B01D 3/14 - Fractional distillation
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
• C07C 2/06 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond

Abstract

Disclosed are a method of preparing an ethylene vinyl alcohol copolymer comprising hydrolyzing an ethylene vinyl acetate copolymer in the presence of a catalyst in a solvent containing alcohol and water to prepare a reaction product containing an ethylene vinyl alcohol copolymer, and a system for preparing an ethylene vinyl alcohol copolymer.

IPC Classes  ?

• C08F 8/12 - Hydrolysis
• B01J 14/00 - Chemical processes in general for reacting liquids with liquidsApparatus specially adapted therefor
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus

Abstract

The present invention provides: an ethylene oligomerization method in which an ethylene oligomer is produced by reacting a chromium complex, an organic aluminium compound, and an organic zinc compound with ethylene; and the ethylene oligomer thereof.

IPC Classes  ?

• C07C 2/34 - Metal-hydrocarbon complexes

Abstract

Disclosed are a solid catalyst for producing polypropylene and a method for producing a block copolymer, particularly, disclosed are a solid catalyst for producing polypropylene, which has high activity and excellent hydrogenation activity and is capable of producing a block copolymer having high stereoregularity and a high rubber content by copolymerization of alpha-olefins, and a method for producing a block copolymer.

IPC Classes  ?

• C08F 4/46 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides selected from alkali metals
• C08F 4/52 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides selected from boron, aluminium, gallium, indium, thallium, or rare earths
• C08F 4/58 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides together with silicon, germanium, tin, lead, antimony, bismuth, or compounds thereof
• C08F 110/06 - Propene
• C08F 210/06 - Propene

Abstract

The present invention relates to an ethylene oligomerization method and, more specifically, to a method for continuous production of ethylene oligomerization, in which ethylene is oligomerized by reacting ethylene with a chromium complex, an organoaluminum compound, and an organozinc compound, wherein the method, by optimizing the conditions of reaction temperature and reaction pressure and the amount of the organozinc compound injection, can improve productivity and significantly reduce the amount of polymer generation.

IPC Classes  ?

• C07C 2/32 - Catalytic processes with hydrides or organic compounds as complexes, e.g. acetyl-acetonates
• C07C 2/30 - Catalytic processes with hydrides or organic compounds containing a metal-to-carbon bondMetal hydrides
• C07C 11/107 - Alkenes with six carbon atoms
• C07C 11/02 - Alkenes
• B01J 31/18 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony
• B01J 31/14 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron
• B01J 31/12 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides

Abstract

Disclosed are a dry reforming catalyst having high activity and long-term stability, and a method for preparing the dry reforming catalyst. A sol-gel reaction is performed at the interface of a catalyst for sol-gel reaction in the form of micelles to form silica particles having pores. In addition, catalyst particles of nickel or nickel oxide are formed in voids or pores of silica by using the difference in solubility in a gel state of the silica.

IPC Classes  ?

• B01J 35/30 - Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
• B01J 23/755 - Nickel
• B01J 23/76 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups
• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• B01J 37/03 - PrecipitationCo-precipitation
• B01J 37/04 - Mixing
• B01J 37/08 - Heat treatment

Abstract

The present invention relates to a catalyst composition for producing an ethylene-based polymer, the catalyst composition being applicable to a high-temperature solution process, and a method for producing an ethylene-based polymer using same. According to the present invention, a low-density ethylene homopolymer or an ethylene-alpha-olefin copolymer having a wide molecular weight distribution and bimodality can be prepared with high activity in a solution polymerization process performed at high temperature.

IPC Classes  ?

• C08F 10/02 - Ethene
• C08F 4/659 - Component covered by group containing a transition metal-carbon bond
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring

Abstract

The present invention relates to a method for removing polymers which are generated during olefin oligomerization and which are accumulated inside a reactor and cause fouling, the method enabling simultaneous oligomerization and polymer removal so that process operation can be efficient, requiring no separate heat source or cooling water such that economic feasibility is improved, and rapidly cooling a polymer solution such that polymers are readily removed from a solvent, thereby enabling solvent recovery rate to be improved.

IPC Classes  ?

• C07C 2/06 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond
• C07C 7/04 - Purification, separation or stabilisation of hydrocarbonsUse of additives by distillation
• C07C 11/107 - Alkenes with six carbon atoms

Abstract

A flame-retardant modified-poly(phenylene oxide) resin composition and an article molded therefrom are provided. The flame-retardant modified-poly(phenylene oxide) resin composition provides a flame-retardant modified-poly(phenylene oxide) resin article that has excellent deformation resistance and mechanical properties, along with enhanced product moldability and appearance quality. Accordingly, the flame-retardant modified-poly(phenylene oxide) resin article can be advantageously used as a battery module housing for electric vehicles.

IPC Classes  ?

• C08L 71/12 - Polyphenylene oxides

Abstract

Disclosed is a method of producing a propylene-based copolymer using a solid catalyst including a carrier, produced by the reaction between dialkoxy magnesium and a metal halide, a titanium halide, and an organic electron donor. According to the disclosure, it is possible to produce a propylene-based copolymer having a high comonomer content and a low amorphous content while maintaining catalyst activity at a highly level and dramatically reducing agglomeration of polymer particles during the production of the copolymer.

IPC Classes  ?

• C08F 10/06 - Propene

Abstract

Disclosed is a method for producing a solid catalyst for propylene polymerization, the method comprising steps of: (1) reacting a dialkoxy magnesium with a metal halide compound in the presence of an organic solvent; (2) reacting the reaction product of step (1) with at least one internal electron donor while increasing the reaction temperature; and (3) reacting the reaction product of step (2) with a titanium halide, wherein the dialkoxy magnesium in step (1) is produced through a reaction step of reacting metal magnesium, an alcohol, and a reaction initiator.

IPC Classes  ?

• C08F 10/06 - Propene
• C08F 4/649 - Catalysts containing a specific non-metal or metal-free compound organic

Abstract

A polypropylene resin composition with excellent impact resistance and rigidity and an article molded therefrom are provided. Since a polypropylene resin article prepared from the polypropylene resin composition has excellent impact resistance and rigidity, it can be advantageously used as an automobile interior or exterior part, a toy for children, or a food storage container.

IPC Classes  ?

• C08L 23/14 - Copolymers of propene
• B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
• C08K 3/22 - OxidesHydroxides of metals
• C08K 5/098 - Metal salts of carboxylic acids
• C08K 5/134 - Phenols containing ester groups
• C08K 5/526 - Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds

Abstract

Provided is a process for preparing a biodegradable polyester resin with suppressed discoloration and to a biodegradable polyester resin prepared by the process. The biodegradable polyester resin prepared by the above preparation process can be used for applications such as disposable films or sheets, tableware, and agricultural films or sheets since its discoloration is effectively suppressed.

IPC Classes  ?

• C08G 63/183 - Terephthalic acids
• C08G 63/85 - Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof

Abstract

An embodiment polypropylene resin composition includes, based on a total weight thereof, a highly crystalline polypropylene resin at 20-50 wt % of the total weight, the highly crystalline polypropylene resin having an isotactic pentad fraction, measured according to the C13—NMR method, of 96% or more, a highly flowable polypropylene resin at 5-15 wt % of the total weight, a glass fiber at 10-35 wt % of the total weight, the glass fiber having an average diameter of 5-15 μm and an average length of 1-16 mm, a glass wool at 1-5 wt % of the total weight, the glass wool having an average diameter of 1-6 μm and an average length of 30-300 μm, a phosphate flame retardant at 15-25 wt % of the total weight, a fluorine flame retardant aid at 0.1-0.4 wt % of the total weight, and a compatibilizer at 1-4 wt % of the total weight.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08F 222/06 - Maleic anhydride
• C08K 5/14 - Peroxides
• C08K 5/3462 - Six-membered rings
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C08K 7/14 - Glass
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
• C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
• C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• C08L 85/02 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbonCompositions of derivatives of such polymers containing phosphorus

Abstract

The present invention relates to a method for removing a polymer generated inside an olefin oligomerization reactor. According to the method for removing a polymer according to the present invention, a polymer inside a reactor can be quickly removed, thus having the advantage of saving time and cost as compared to the existing case of dismantling the reactor and manually removing the polymer. In addition, the present invention is advantageous in that operational downtime due to reactor maintenance is reduced, and thus productivity is improved.

IPC Classes  ?

• C07C 2/32 - Catalytic processes with hydrides or organic compounds as complexes, e.g. acetyl-acetonates
• C07C 11/02 - Alkenes
• C07C 11/107 - Alkenes with six carbon atoms

Abstract

The present disclosure relates to a novel transition metal compound, a transition metal catalyst composition having high catalytic activity for producing a copolymer of ethylene and α-olefin containing the same, a method for producing a copolymer of ethylene and α-olefin using the same, and a copolymer of ethylene and α-olefin produced using the same.

IPC Classes  ?

• C07F 17/00 - Metallocenes
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 4/659 - Component covered by group containing a transition metal-carbon bond
• C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers

Abstract

The present invention relates to equipment for preparing a polyolefin elastomer including a reactor to which a solvent and a raw material are supplied, a primary devolatilizer which devolatilizes a product discharged from the reactor to remove an unreacted material (primary devolatilization recovery flow), and to discharge the remainder thereof (primary devolatilization preparation flow), a secondary devolatilizer which re-devolatilizes the primary devolatilization preparation flow discharged from the primary devolatilizer to further remove an unreacted material (secondary devolatilization recovery flow), and to discharge the remainder thereof (secondary devolatilization preparation flow), a finisher which scrubs, using water, the secondary devolatilization preparation flow discharged from the secondary devolatilizer, so that the unreacted material and the water are evaporated and a polymer product remains, and a flash drum which removes low-molecular materials (impurity removal flow) from the primary devolatilization recovery flow removed from the primary devolatilizer, and recovers the remainder to the reactor.

IPC Classes  ?

• C08F 2/01 - Processes of polymerisation characterised by special features of the polymerisation apparatus used
• C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
• C08F 6/00 - Post-polymerisation treatments

Abstract

The present invention relates to a technique for recovering a solvent and an unreacted material in an extruder (finisher) for a polyolefin elastomer (POE) preparation process, wherein the solvent and the unreacted material are maximally recovered with energy minimization through a recovery process of hydrocarbons (HCs) removed from a product in the extruder (finisher) for the POE preparation process, and thus are reused in the polyolefin elastomer preparation process.

IPC Classes  ?

• C08F 6/00 - Post-polymerisation treatments
• C08F 6/10 - Removal of volatile materials, e.g. monomers, solvents
• C08F 6/16 - Purification
• C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers

Abstract

The present invention provides: an ethylene oligomerization method in which an ethylene oligomer is produced by reacting a chromium complex, an organic aluminium compound, and an organic zinc compound with ethylene; and the ethylene oligomer thereof.

IPC Classes  ?

• C07C 2/34 - Metal-hydrocarbon complexes

Abstract

The present disclosure provides a method for polymerizing ultra-high molecular weight polyethylene and a method for preparing the catalyst thereof by reacting a main catalyst, a cocatalyst mixed with two or more types of organoaluminum, and an organosilane compound in the polymerization of ultra-high molecular weight polyethylene to have high activity, high bulk density, and high molecular weight while simultaneously having low particle agglomeration.

IPC Classes  ?

• C08F 110/02 - Ethene

Abstract

The present invention provides: an ethylene oligomerization method in which an ethylene oligomer is produced by reacting a chromium complex and an organic aluminium compound with ethylene; and the ethylene oligomer thereof.

IPC Classes  ?

• C07C 2/34 - Metal-hydrocarbon complexes
• C07C 11/107 - Alkenes with six carbon atoms
• C07C 11/02 - Alkenes

Abstract

Provided is a method of manufacturing an ethylene vinyl alcohol copolymer, the method including: introducing a monomer including ethylene and vinyl acetate, and a first solvent into a reactor to manufacture an ethylene vinyl acetate copolymer through polymerization; recovering unreacted ethylene after the polymerization; recovering unreacted vinyl acetate after the polymerization; introducing a second solvent different from the first solvent to manufacture an ethylene vinyl alcohol copolymer from the ethylene vinyl acetate copolymer through transesterification; and separating the second solvent-derived acetate produced from the transesterification by the method described herein.

IPC Classes  ?

• C08F 216/06 - Polyvinyl alcohol

Abstract

A polyolefin resin composition having a high resistance to tracking and an article molded therefrom are provided. The polyolefin resin composition has excellent thermal resistance and mechanical durability and has excellent elongation even when a large amount of a tracking inhibitor is mixed. Accordingly, the polyolefin resin composition can be advantageously used for outdoor power cables with excellent tracking resistance and an increase in power transmission capacity.

IPC Classes  ?

• C08L 23/14 - Copolymers of propene

Abstract

The present invention relates to a solar wavelength conversion material with improved efficiency, and a solar cell comprising same. According to one embodiment of the present invention, the present invention provides a solar wavelength conversion material comprising an aluminum hydroxide precursor, and a lanthanide ion or a derivative containing same.

IPC Classes  ?

• C09K 11/64 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing aluminium
• H01L 31/055 - Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means where light is absorbed and re-emitted at a different wavelength by the optical element directly associated or integrated with the PV cell, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements
• H01L 31/048 - Encapsulation of modules
• C09K 11/77 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals
• C09K 11/02 - Use of particular materials as binders, particle coatings or suspension media therefor
• C01F 7/30 - Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
• C01F 17/34 - Aluminates, e.g. YAlO3 or Y3-xGdxAl5O12
• C08J 5/18 - Manufacture of films or sheets
• C08K 3/22 - OxidesHydroxides of metals

Goods & Services

Polymer resins, unprocessed; unprocessed polyvinylidene chloride resins; unprocessed polystyrene resins; unprocessed polyamide resins; unprocessed polyethylene resins; unprocessed polypropylene resins; plastics, unprocessed; synthetic resins, unprocessed; unprocessed plastic in the form of powder or granules; fluorine resins; unsaturated polyester resins; polyethylene resin for extrusion coating; chlorinated polyvinyl chloride compounds; polymerization plastics; polybutylene resins; polyvinyl acetal resins; polyvinyl alcohol resins; polyamide resins; polyethylene resins; polypropylene resins. Semi-finished plastics in extruded form; flexible plastic conduits for plumbing purposes; viscose sheets, other than for wrapping; polyethylene films used for the dirt; insulation materials for underground pipes and tanks; insulating materials made of polyethylene foam; flexible tubes of plastic; plastic pipes.

Abstract

A method for preparing a rubber composition capable of improving the physical properties of a final product is disclosed. A rubber composition is prepared by dispersing polybutene in rubber in a solution phase (PIB extended rubber). The method comprises dispersing hydrophobic extender oil and polybutene in water to prepare an extender oil/polybutene emulsion; adding the extender emulsion to a latex-shaped rubber composition and uniformly dispersing the same in a solution to prepare a rubber/extension oil/polybutene composition; and solidifying, drying and molding the composition in a latex shape through salting-out and acid precipitation. When the rubber composition is applied to a tire tread composite material, the durability, grip property and low rotational resistance are improved, thereby attaining improved braking characteristic, low fuel consumption characteristic, and wear performance.

IPC Classes  ?

• C08L 9/06 - Copolymers with styrene
• C08L 7/00 - Compositions of natural rubber
• C08L 91/00 - Compositions of oils, fats or waxesCompositions of derivatives thereof
• C08F 2/24 - Emulsion polymerisation with the aid of emulsifying agents
• C08F 210/08 - Butenes
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

A solar spectral wavelength converting material with improved efficiency and a solar cell including the same. According to an embodiment, a solar spectral wavelength converting material includes an aluminum hydroxide precursor and an aromatic ring compound or a derivative including the same.

IPC Classes  ?

• H01L 33/50 - Wavelength conversion elements
• H01L 31/0216 - Coatings
• H01L 31/048 - Encapsulation of modules
• C09K 11/06 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing organic luminescent materials
• H01L 33/56 - Materials, e.g. epoxy or silicone resin
• B82Y 40/00 - Manufacture or treatment of nanostructures
• B82Y 20/00 - Nanooptics, e.g. quantum optics or photonic crystals

Abstract

When a solar wavelength conversion material (solar spectral wavelength converter) produced based on a low-cost aluminum material having an ultraviolet ray absorption spectrum and a visible light emitting spectrum is positioned between a solar cell and an encapsulant of the front surface of the solar cell on which solar light is incident, photocurrent conversion efficiency of the solar cell may be improved by inducing a down-conversion effect and an anti-reflective coating effect at the same time, thereby increasing light-generated current.

IPC Classes  ?

• H01L 31/0216 - Coatings
• H01L 31/055 - Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means where light is absorbed and re-emitted at a different wavelength by the optical element directly associated or integrated with the PV cell, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements
• H01L 31/18 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof

Abstract

The present invention relates to a bisphosphine ligand compound, a chromium compound prepared using same, an ethylene oligomerization catalyst system containing the chromium compound, and an ethylene oligomer preparing method, wherein the bisphosphine ligand compound is suitable for mass production and commercial processes, allows extremely high activity to be compatible with excellent economical benefit, and increases selectivity for ethylene oligomerization reaction, thereby being able to be used to manufacture 1-hexene and/or 1-octene at high yield.

IPC Classes  ?

• B01J 31/24 - Phosphines
• B01J 31/14 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron
• C07C 2/36 - Catalytic processes with hydrides or organic compounds as phosphines, arsines, stilbines or bismuthines
• C07F 11/00 - Compounds containing elements of Groups 6 or 16 of the Periodic Table

Abstract

Disclosed is a method for preparing a solid catalyst capable of controlling a molecular weight distribution and polydispersity according to an organic compound as used in a polymerization reaction, in which the solid catalyst contains titanium tetrachloride and a diester or diether organic compound. The catalyst having excellent polymerization activity, and allowing uniform particle size and high apparent density of the ultra-high molecular weight polyethylene, and easily controlling the molecular weight distribution and polydispersity of the ultra-high molecular weight polyethylene may be prepared simply and efficiently.

IPC Classes  ?

• C08F 4/76 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from metals not provided for in group selected from refractory metals selected from titanium, zirconium, hafnium, vanadium, niobium, or tantalum
• C08F 4/02 - Carriers therefor
• C08F 110/02 - Ethene

Abstract

4 hydrocarbons containing butadiene, n-butene, and isobutene; (2) producing methacrolein via a first oxidation reaction of the separated isobutene; (3) producing methacrylic acid via a second oxidation reaction of the produced methacrolein; and (4) esterifying the produced methacrylic acid with methanol. By having a high heat capacity, the amount of nitrogen added is minimized to reduce the size of the reactor and the amount of gas production at a rear end, which has a high economic feasibility due to the effect of reducing investment and investment cost.

IPC Classes  ?

• C07C 67/42 - Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester by oxidation of secondary alcohols or ketones
• B01J 21/04 - Alumina
• B01J 23/44 - Palladium
• C07C 69/54 - Acrylic acid estersMethacrylic acid esters

Abstract

A soft polyolefin resin composition and an article molded therefrom are provided. The polyolefin resin includes: (A) 50 to 95% by weight of an ethylene-propylene block copolymer obtained by polymerization of a propylene homopolymer or an ethylene-propylene random copolymer with an ethylene-propylene rubber copolymer in stages in reactors; (B) 4.8 to 40% by weight of an ethylene-α-olefin rubber copolymer; and (C) 0.2 to 10% by weight of a copolymer of ethylene and a polar monomer, based on the total weight of components (A) to (C). The glass transition temperature of the rubber component in the ethylene-propylene block copolymer appears at −60 to −40° C. when measured by a dynamic mechanical analyzer, the melt index of the polyolefin resin composition measured at 230° C. under a load of 2.16 kg is 0.5 to 20 g/10 minutes, and the glass transition temperature of the rubber component in the polyolefin resin composition appears at −60 to −40° C. when measured by a dynamic mechanical analyzer.

IPC Classes  ?

• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• H01B 3/44 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes vinyl resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes acrylic resins

Abstract

Disclosed is a method for preparing a solid catalyst for propylene polymerization, and more specifically, a method for preparing a solid catalyst for propylene polymerization including (1) first reacting dialkoxy magnesium and titanium halide compound under the presence of an organic solvent; (2) adding two kinds of non-aromatic internal electron donors to a product of the step (1) and reacting the mixture; and (3) second reacting the product of the step (2) with a titanium halide compound and washing a reaction product. The catalyst prepared according to the method as described in the present disclosure not only may provide high catalytic activity, but also may provide a propylene polymer having excellent stereoregularity.

IPC Classes  ?

• C07F 7/28 - Titanium compounds
• C08F 10/06 - Propene

Abstract

An ethylene-propylene block copolymer resin is provided that is suitable as an insulation layer of an electric power cable. The ethylene-propylene block copolymer is obtained by polymerization of a propylene homopolymer or an ethylene-propylene random copolymer with an ethylene-propylene rubber copolymer in stages in reactors in the presence of a Ziegler-Natta catalyst obtained using two internal electron donors, wherein one of the two internal electron donors is a compound comprising an ester group and an alkoxy group, the ethylene-propylene block copolymer has a melting temperature of 150 to 160° C., the content of the solvent extract thereof when extracted at room temperature with xylene is 30 to 50% by weight, and the intrinsic viscosity of the solvent extract is 1.5 to 3.0 dl/g.

IPC Classes  ?

• C08F 297/08 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
• C07C 69/70 - Tartaric acid esters
• C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• C07C 69/708 - Ethers
• H01B 3/44 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes vinyl resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes acrylic resins

Abstract

The present invention relates to a solid catalyst for propylene polymerization and a method of producing a propylene polymer or copolymer using the solid catalyst for propylene polymerization, and provides a solid catalyst which prepares a dialkoxymagnesium carrier and is formed of a carrier produced through a reaction of the carrier with a metal halide, a titanium halide, an organic electron donor, etc., and a method of producing a propylene polymer or copolymer through copolymerization of propylene-alpha olefin using the solid catalyst, wherein the dialkoxymagnesium carrier has an uniform particle size range of 10 to 100 μm and a spherical particle shape by adjusting injection amounts, injection numbers, and reaction temperatures of metal magnesium, alcohol and a reaction initiator during a reaction process of metal magnesium and alcohol.

IPC Classes  ?

• C08F 10/06 - Propene
• C08F 297/08 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins

Abstract

The present invention relates to a propylene polymerizing solid catalyst for reducing the volatile organic compound (VOC) and a method of producing polypropylene using the propylene polymerizing solid catalyst, the propylene polymerizing solid catalyst including an organic electron donor formed of a combination of a first internal electron donor of titanium, magnesium, halogen and cyclic diester and a second internal electron donor of diether, and has improved hydrogen reactivity of a catalyst compared to a conventional method and has an effect that is capable of producing an eco-friendly polypropylene which has greatly lowered a content of the VOC by using the catalyst.

IPC Classes  ?

• C08F 10/06 - Propene

Abstract

The present invention relates to a chrome compound composed of non-coordinating anions and a trivalent chrome cation, a reactant of the chrome compound and a bidentate ligand, an ethylene oligomerization reaction catalyst system using the chrome compound and the reactant, and a method for preparing an ethylene oligomer using the catalyst system. Through the above conformation, the present invention can selectively produce 1-hexene and 1-octene with high activity while omitting the use of methylaluminoxane (MAO), and can provide an ethylene oligomerization process more suitable for mass production.

IPC Classes  ?

• C08F 4/06 - Metallic compounds other than hydrides and other than metallo-organic compoundsBoron halide or aluminium halide complexes with organic compounds containing oxygen
• B01J 31/14 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron
• C07F 11/00 - Compounds containing elements of Groups 6 or 16 of the Periodic Table
• B01J 31/18 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony
• C07C 2/32 - Catalytic processes with hydrides or organic compounds as complexes, e.g. acetyl-acetonates
• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• C07F 19/00 - Metal compounds according to more than one of main groups
• C07C 2/30 - Catalytic processes with hydrides or organic compounds containing a metal-to-carbon bondMetal hydrides
• C07C 11/04 - Ethene

Abstract

13-NMR method, an amount of about 1 to 30 wt % of rubber having a melt index of about 1 to 6 g/10 min (230° C., 2.16 Kg), an amount of about 11 to 30 wt % of an inorganic filler composed of a mixture of an amount of about 10 to 20 wt % of talc and an amount of about 1 to 10 wt % of whisker, and an amount of about 1 to 5 wt % of an anti-scratch agent, all the wt % are based on the total weight of the polypropylene resin composition.

IPC Classes  ?

• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• C08K 3/34 - Silicon-containing compounds
• F16F 7/00 - Vibration-dampersShock-absorbers
• C08L 23/12 - Polypropene
• F16F 1/36 - Springs made of plastics, e.g. rubberSprings made of material having high internal friction

Abstract

2 are each independently hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, or substituted heterohydrocarbyl, and Y represents a group connecting O or C(═O)O and is hydrocarbyl, substituted hydrocarbyl, hetero hydrocarbyl, or substituted heterohydrocarbyl. According to the oligomerization method of the present disclosure, in the distribution of the produced α-olefins, C10″-C12″ α-olefins care highly distributed, the produced α-olefins have a remarkably high purity.

IPC Classes  ?

• B01D 3/06 - Flash distillation
• B01D 3/14 - Fractional distillation
• C07C 2/32 - Catalytic processes with hydrides or organic compounds as complexes, e.g. acetyl-acetonates
• C08F 4/32 - Organic compounds
• C01G 25/04 - Halides
• C07C 11/02 - Alkenes
• G01N 30/02 - Column chromatography
• C07C 11/107 - Alkenes with six carbon atoms
• C08F 110/02 - Ethene

Abstract

The present disclosure relates to a solid catalyst for propylene polymerization and a process for manufacture of a propylene polymer or copolymer using the solid catalyst, and provides a solid catalyst including carriers produced via a reaction between dialkoxy magnesium and metal halide, titanium halide, an organic electron donor, etc. and a process of manufacture of a propylene-based block copolymer via copolymerization of propylene-α-olefin using the solid catalyst. Particularly, internal electron donors including an ester group and an alkoxy group are used as two kinds of organic electron donors used in the present disclosure, and, thus, a block copolymer having high activity and excellent stereoregularity and a high rubber content via copolymerization with α-olefin can be produced using a solid catalyst system suggested in the present disclosure.

IPC Classes  ?

• C08F 4/649 - Catalysts containing a specific non-metal or metal-free compound organic
• C08F 10/06 - Propene
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08F 4/643 - Component covered by group with a metal or compound covered by group other than an organo-aluminium compound

Abstract

A metallic polypropylene resin composition is provided herein. The metallic polypropylene resin composition provides appearance characteristics that are similar to those provided by painting, but without painting. The metallic polypropylene resin composition of the present invention has excellent physical properties such as scratch resistance, and thus may be applied to molding methods, such as a molded in color (MIC) method. The resin composition is useful as a material for automobile interior and exterior parts, as wells as electric and electronic products, which can be molded by the MIC method.

IPC Classes  ?

• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
• C08K 3/08 - Metals
• C08K 5/36 - Sulfur-, selenium-, or tellurium-containing compounds
• B29K 23/00 - Use of polyalkenes as moulding material
• B29K 105/16 - Fillers
• B29K 505/00 - Use of metals, their alloys or their compounds, as filler
• B29K 509/02 - Ceramics
• B29L 31/30 - Vehicles, e.g. ships or aircraft, or body parts thereof
• B60R 19/03 - Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite

Abstract

There is provided an organic/inorganic complex coating porous separator including a porous substrate, and an organic/inorganic complex coating layer formed in a single layer or multiple layers on a single surface or both surfaces of the porous substrate or at least a part of a pore portion of the porous substrate using a coating solution comprising a binder dispersed or suspended in a certain size and selectively comprising inorganic particles, and a secondary battery including the same. According to the present invention, since the coating solution comprising the binder dispersed in a certain size or less in a solvent is coated/dried on the porous substrate, a organic/inorganic complex coating porous separator having excellent air permeability and adhesive strength and a secondary battery including the organic/inorganic complex coating porous separator are provided.

IPC Classes  ?

• H01M 2/16 - Separators; Membranes; Diaphragms; Spacing elements characterised by the material
• H01M 2/14 - Separators; Membranes; Diaphragms; Spacing elements
• H01M 10/052 - Li-accumulators
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• H01M 2/18 - Separators; Membranes; Diaphragms; Spacing elements characterised by the shape

Abstract

There is provided a light-emitting device with enhanced luminescence efficiency, which simultaneously exhibits excitation enhancement and emission enhancement of a light-emitting material by controlling two or multiple surface plasmon resonance bands of anisotropic metal nanoparticles to be formed in a near ultraviolet light range and a visible light range and optimizing overlapping of a wavelength of a near ultraviolet or blue light source with an absorption wavelength and an emission wavelength of the light-emitting material. There is also provided a light-emitting device with improved color gamut and luminance, which simultaneously exhibit emission enhancement of different types of light-emitting materials by controlling two or multiple surfaces plasmon resonance bands of anisotropic metal nanoparticles to be overlapped with absorption and emission wavelengths of two or more light-emitting materials having different emission wavelengths from one another.

IPC Classes  ?

• H01L 33/50 - Wavelength conversion elements
• B82B 1/00 - Nanostructures formed by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
• H01L 51/52 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED) - Details of devices
• H01L 33/04 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction

Abstract

There is provided a separator used in an electrochemical device and more particularly, to a porous separator in which an organic/inorganic complex coating layer is applied to a porous substrate, a method for preparing the same, and an electrochemical device using the same.

IPC Classes  ?

• H01M 2/16 - Separators; Membranes; Diaphragms; Spacing elements characterised by the material
• H01M 2/14 - Separators; Membranes; Diaphragms; Spacing elements
• H01M 10/052 - Li-accumulators

Abstract

The provided are a polylactic acid-polyalkylene glycol copolymer and a composition comprising the same which have excellent crystallization rate, wherein the polylactic acid-polyalkylene glycol copolymer is prepared by melt-reacting polylactic acid with polyalkylene glycol of which one end group is substituted with a functional group and has improved eco-friendliness, injection moldability, and excellent heat resistance which makes it to be suitably applied to various molded articles requiring great heat resistance, such as disposables, kitchen utensils and containers, electric-electronic parts and automobile parts.

IPC Classes  ?

• C08G 63/66 - Polyesters containing oxygen in the form of ether groups
• C08K 3/34 - Silicon-containing compounds
• C08G 81/00 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
• C08G 63/668 - Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
• C08K 5/00 - Use of organic ingredients

Abstract

Provided is a preparation method for a mesoporous zeolite, particularly a method for preparing mesoporous zeolite through a simple process without using costly materials such as an organic amine template or a surfactant. The method includes 1) forming a synthetic zeolite gel by mixing a silica precursor, an aluminum precursor and water and aging the resulted mixture; 2) carrying out zeolite synthesis by subjecting the synthetic zeolite gel to a hydrothermal reaction; 3) cooling the synthesized zeolite from the above step 2), then adding a basic solution thereto and allowing them to react, thereby obtaining a mesoporous zeolite slurry; and 4) washing the mesoporous zeolite slurry with water, drying and firing it, thereby obtaining a mesoporous zeolite.

IPC Classes  ?

• C01B 39/02 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereofDirect preparation thereofPreparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactantsAfter-treatment thereof
• C01B 39/38 - Type ZSM-5

Abstract

Disclosed is a method for preparing a solid catalyst for propylene polymerization, specifically to a method for preparing a solid catalyst for propylene polymerization which can produce a polypropylene having high melt flow rate, a wide molecular distribution and excellent stereoregularity with a high production yield.

IPC Classes  ?

• C08F 110/06 - Propene
• C08F 4/64 - Titanium, zirconium, hafnium, or compounds thereof

Abstract

Provided are a solid catalyst for propylene polymerization and a method for preparing the same, specifically a solid catalyst for propylene polymerization which does not contain any environmentally harmful material and can produce a polypropylene having excellent stereoregularity with a high production yield, and a method for preparing the catalyst.

IPC Classes  ?

• C08F 110/06 - Propene
• B01J 31/00 - Catalysts comprising hydrides, coordination complexes or organic compounds
• C08F 4/02 - Carriers therefor
• C08F 4/44 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides
• C08F 2/00 - Processes of polymerisation
• C08F 10/06 - Propene

Abstract

Provided is a microporous separator for a lithium secondary battery having shutdown properties wherein the separator comprises a propylene random copolymer which has a melt index of 0.5-10 g/10 minutes and comprises one or more species of comonomers in the content of 0.1-8 wt %.

IPC Classes  ?

• H01M 2/16 - Separators; Membranes; Diaphragms; Spacing elements characterised by the material
• H01M 2/14 - Separators; Membranes; Diaphragms; Spacing elements

Abstract

Disclosed are a method for preparing a solid catalyst for propylene polymerization and a catalyst prepared thereby. Specifically, disclosed are a method for preparing a solid catalyst for propylene polymerization which can prepare polypropylene having excellent stereoregularity with a high production yield by using silane compounds and bicycloalkanedicarboxylate or bicycloalkenedicarboxylate as an internal electron donor, and a catalyst prepared thereby method for preparing polypropylene using the same.

IPC Classes  ?

• B01J 21/00 - Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
• B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
• B01J 25/00 - Catalysts of the Raney type
• B01J 29/00 - Catalysts comprising molecular sieves
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• C08F 110/06 - Propene
• C08F 10/06 - Propene

Abstract

The present invention provides a method for preparing a BaX type zeolite granules comprising: adding a carbohydrate-based molding promoter to NaX type zeolite powder and thereto subsequently spraying and blending alumina sol and silica sol to form granules of the mixture; heating the formed granules to convert the alumina and silica component to aluminosilica so as to generate pores inside the formed granules; hydrothermally treating the resulted granules in a sodium hydroxide aqueous solution under the conditions for zeolite synthesis, thereby converting a portion of the aluminosilica to zeolite; and carrying out ion-exchanging by Ba ions. The present invention also provides BaX type zeolite granules which have excellent strength and can be suitably used as an adsorbent in simulated moving bed (SMB) application.

IPC Classes  ?

• B01J 20/18 - Synthetic zeolitic molecular sieves
• C01B 39/48 - Other types characterised by their X-ray diffraction pattern and their defined composition using at least one organic template directing agent
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C07C 7/13 - Purification, separation or stabilisation of hydrocarbonsUse of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties

Abstract

Provided are a solid catalyst for propylene polymerization which includes titanium, magnesium, halogen and an internal electron donor mixture of two or more compounds wherein the internal electron donor mixture includes at least one selected from the bicycloalkanes or bicycloalkenes and at least one selected from diethers and succinates, and a method for preparing propylene using the same. As disclosed, it is possible to prepare polypropylene having an excellent stereoregularity with a high production yield.

IPC Classes  ?

• B01J 31/00 - Catalysts comprising hydrides, coordination complexes or organic compounds
• C08F 4/02 - Carriers therefor
• C08F 4/44 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides
• C08F 2/00 - Processes of polymerisation

Abstract

Disclosed is a method for preparing a solid catalyst for propylene polymerization, specifically to a method for preparing a solid catalyst for propylene polymerization which can produce a polypropylene having high melt flow rate, a wide molecular distribution and excellent stereoregularity with a high production yield.

IPC Classes  ?

• C08F 4/16 - Metallic compounds other than hydrides and other than metallo-organic compoundsBoron halide or aluminium halide complexes with organic compounds containing oxygen of silicon, germanium, tin, lead, titanium, zirconium or hafnium
• C08F 110/06 - Propene
• C08F 210/06 - Propene
• C08F 4/649 - Catalysts containing a specific non-metal or metal-free compound organic

Abstract

Provided is a method for manufacturing a sheet for a solar cell encapsulant which has stability against yellowing after a crosslinking process and thus good appearance with improved productivity in the sheet manufacture process, specifically to a method for manufacturing a sheet for a solar cell encapsulant characterized by melt-mixing a resin composition with an organic peroxide, a co-crosslinking agent and a silane coupling agent at the degradation temperature of the organic peroxide or less, wherein the resin composition is obtained by melt-mixing EVA resin with an antioxidant, an UV absorber and a light stabilizer at 80-220° C., and forming a sheet from the obtained melt-mixed resin composition.

IPC Classes  ?

• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
• B29B 9/16 - Auxiliary treatment of granules
• C08J 5/18 - Manufacture of films or sheets
• H01L 31/048 - Encapsulation of modules
• C08K 5/00 - Use of organic ingredients
• C08K 5/14 - Peroxides
• C08K 5/5425 - Silicon-containing compounds containing oxygen containing at least one C=C bond
• B29K 31/00 - Use of polyvinylesters as moulding material

Abstract

A method for improving productivity and process stability in styrene monomer manufacturing system using a reaction system having multiple reactors connected in series, which can prevent destruction of the embedded catalyst and bending of a screen which supports catalyst and achieve homogeneous catalyst inactivation during the reaction by divergence of some portions of the feed containing steam and ethylbenzene and injection thereof into a certain point of the system.

IPC Classes  ?

• C07C 5/327 - Formation of non-aromatic carbon-to-carbon double bonds only

Abstract

Provided is a method of preparation of a spherical support for an olefin polymerization catalyst. Specifically, provided is a method of preparation of a support which can be used in preparation of an olefin polymerization catalyst, wherein, MgX(I) (X=halogen atom) is prepared by reacting a reaction initiator, nitrogen halide, and magnesium metal, and then magnesium metal and alcohol are reacted in the presence of the MgX, thereby resulting a smooth-surfaced spherical dialkoxy magnesium support having a uniform particle size distribution.

IPC Classes  ?

• C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Abstract

Disclosed is a method for separating aromatic compounds using a simulated moving bed adsorptive chromatography, comprising a sulfolan process that is a non-aromatic compound removing process, a benzene/toluene fractionation process, an aromatic compound fractionation process, a selective toluene disproportionation process, a transalkylation process, a simulated moving bed para-xylene separation process and a xylene isomerization process, wherein the method is characterized by further comprising a simulated moving bed xylene mixture pre-treatment process and an additional xylene isomerization process. The separation method of aromatic compounds according to the present invention can make significant improvement in para-xylene and benzene production in the overall process, as compared to the conventional aromatic compound separation process.

IPC Classes  ?

• C07C 7/14 - Purification, separation or stabilisation of hydrocarbonsUse of additives by crystallisationPurification or separation of the crystals

Abstract

Provided are a catalyst for polymerization of propylene and a method for polymerization of propylene using the same. Specifically, provided are a catalyst for propylene polymerization which comprises titanium tetrachloride, an internal electron donor, and dialkoxy magnesium particles, as a carrier, obtained from the reaction of a halogen compound or nitrogen-halogen compound as a reaction initiator, metal magnesium and an alcohol, and a method for propylene polymerization using the same.

IPC Classes  ?

• B01J 31/00 - Catalysts comprising hydrides, coordination complexes or organic compounds
• B01J 27/24 - Nitrogen compounds
• C08F 4/02 - Carriers therefor

Abstract

Disclosed is a method for separating aromatic compounds using a simulated moving bed adsorptive chromatography and a crystallization process, comprising a sulfolan process that is a non-aromatic compound removing process, a benzene/toluene fractionation process, an aromatic compound fractionation process, a selective toluene disproportionation process, a transalkylation process, a crystallization process for para-xylene separation, a simulated moving bed para-xylene separation process and a xylene isomerization process, wherein the method is characterized by further comprising a simulated moving bed xylene mixture pre-treatment process and an additional xylene isomerization process. The separation method of aromatic compounds according to the present invention can make significant improvement in para-xylene and benzene production in the overall process, as compared to the conventional aromatic compound separation process.

IPC Classes  ?

• C07C 7/14 - Purification, separation or stabilisation of hydrocarbonsUse of additives by crystallisationPurification or separation of the crystals

Abstract

Disclosed is a method for separating aromatic compounds using a simulated moving bed (SMB) operation, characterized by injecting each raw material having a different composition into each different part of an adsorption chamber so as to improve the recovery rate. More specifically, the present invention provides a method for separating aromatic compounds for improving p-xylene separation in a p-xylene separation process, by injecting a high p-xylene mixture from selective toluene disproportionation process (STDP) and low p-xylene mixture from other processes (for example, processes of reformer, isomerization reactor and transalkylation of aromatics having 9 carbon atoms) into each different part of an adsorption chamber.

IPC Classes  ?

• C07C 7/12 - Purification, separation or stabilisation of hydrocarbonsUse of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers

Abstract

Provided is a preparation method of a catalyst for ethylene (co)polymerization, comprising the following steps: (1) preparing a magnesium compound solution by contact-reacting a halogenated magnesium compound with a mixed solvent of cyclic ether and at least one alcohol; (2) reacting the resulted magnesium compound solution from the above step (1) with a silicon compound having at least one alkoxy group; (3) preparing a support by adding a titanium compound to the resulted product from the step (2); and (4) reacting thus obtained support with a titanium compound and optionally a monoester compound, resulting in a catalyst. Catalysts prepared according to the present invention have a regulated particle shape, and their particle size can be easily adjusted. Therefore, with such catalyst, it is possible to produce polymers having high bulk density at high production yield.

IPC Classes  ?

• B01J 31/06 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers

Abstract

Provided is a process for adsorptive separation of p-xylene from an aromatic hydrocarbon mixture comprising other isomers of xylene, and a device used therein. More specifically, the present invention provides a separation process employing simulated moving bed (SMB) adsorptive chromatography, characterized by subjecting the extracts eluted from a plurality of adsorption chambers arranged in parallel, to a crystallizer for additional separation, thereby improving productivity, and a device used therein.

IPC Classes  ?

• C07C 7/135 - Purification, separation or stabilisation of hydrocarbonsUse of additives by gas-chromatography

Abstract

Provided is a method for preparing a support for olefin polymerization catalysts used in polyolefin preparation processes. Particularly, provided is a novel method for preparing a support for olefin polymerization catalysts comprising the reaction of metal magnesium with an alcohol in the presence of an additive for initiating the reaction, characterized in that halogenated nitrogen compound is used as the additive for initiating the reaction, resulting in a spherical dialkoxy magnesium support.

IPC Classes  ?

• B01J 31/00 - Catalysts comprising hydrides, coordination complexes or organic compounds
• C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Abstract

Provided is a process for adsorptive separation of p-xylene from an aromatic hydrocarbon mixture comprising other isomers of xylene, and a device used therein. More specifically, the present invention provides a separation process employing simulated moving bed (SMB) adsorptive chromatography, characterized by pretreating a fluid mixture, i.e. the feed, by using single adsorption chamber so as to raise the concentration of a component to be separated, and then carrying out the simulated moving bed adsorptive separation, thereby improving productivity, and a device used therein.

IPC Classes  ?

• C07C 7/135 - Purification, separation or stabilisation of hydrocarbonsUse of additives by gas-chromatography

Abstract

Disclosed is a method for producing a propylene polymer using an alkoxysilane compound comprising a trialkylsilyl group in its molecular structure, specifically a method for easily producing an isotactic propylene polymer with dramatically improved melt flowability, owing to the improved reactivity of hydrogen that is provided as a molecular weight regulator, by specifically using an alkoxysilane compound comprising a trialkylsilyl group in the molecular structure thereof as an external electron donor in propylene polymerization.

IPC Classes  ?

• C08F 4/642 - Component covered by group with an organo-aluminium compound
• C08F 4/649 - Catalysts containing a specific non-metal or metal-free compound organic

Abstract

The present invention relates to a process for preparing a biodegradable polyester resin with suppressed discoloration and to a biodegradable polyester resin prepared by the process. The biodegradable polyester resin prepared by the above preparation process can be used for such applications as disposable films or sheets, tableware, and agricultural films or sheets since its discoloration is effectively suppressed.

IPC Classes  ?

• C08G 63/20 - Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• C08G 63/78 - Preparation processes
• C08G 63/85 - Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof