The present invention relates to a method for preparing a dehydrogenation catalyst, wherein a mixed sol of a catalytic metal component solution and a support is stirred for impregnation, followed by spray drying using a spray dryer and calcination, and a method for dehydrogenating hydrocarbons using the dehydrogenation catalyst prepared thereby. According to the present invention, the performance of the dehydrogenation catalyst can be improved, and the preparation time of the catalyst can be shortened, thereby reducing production costs and improving the yield of catalyst preparation.
B01J 23/89 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with noble metals
C07C 5/32 - Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
2.
APPARATUS AND METHOD FOR FLUIDIZED BED DEHYDROGENATION REACTION
The present invention relates to an apparatus and a method for producing propylene by dehydrogenating propane using fluidized bed technology in which a chlorine dispersion device and a hydrogen reduction device are added downstream of a catalyst regenerator. According to the present invention, when the chlorine dispersion device and the hydrogen reduction device are added downstream of the catalyst regenerator, the adhesion between a sintered catalyst metal and a support increases in a catalyst regeneration process, and catalyst dispersibility and propylene yield can be maintained at the initial levels.
B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
B01J 38/42 - Gas or vapour treatingTreating by using liquids vaporisable upon contacting spent catalyst using halogen-containing material
B01J 38/10 - Gas or vapour treatingTreating by using liquids vaporisable upon contacting spent catalyst using elemental hydrogen
The present invention relates to a cellulose ester retardation film capable of reducing viewing angle dependence and, particularly, remarkably compensating for panel color at an oblique viewing angle. The cellulose ester retardation film according to the present invention comprises a cellulose ester resin having an acyl group substitution degree of 2.2-2.9, and a compound derived from a polyol and an aromatic dicarboxylic acid that has an average carbon number of 12 or less.
The present invention relates to an optical film and a panel comprising same, and can secure an optimal phase difference range and improve the difference between left and right diagonal visual perception of an FFS mode panel, by adjusting the molecular weight and the degree of substitution of a cellulose ester resin when manufacturing a film, adding a set amount of an additive, and performing a four-step drying process when manufacturing the film.
The present invention relates to a method for recovering light olefins, which can achieve an increase in propylene production and a reduction in the basic unit of a process by feeding steam into five serially connected dehydrogenation reactors, and can diversify the product of a propane dehydrogenation reaction process from a propylene single product into propylene and ethylene by separately collecting ethane and ethylene, i.e., by-products of the propylene production process, and converting the ethane into ethylene, thereby improving the economic efficiency of the process and selectivity.
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
C01B 3/56 - Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solidsRegeneration of used solids
C07C 7/00 - Purification, separation or stabilisation of hydrocarbonsUse of additives
C07C 7/04 - Purification, separation or stabilisation of hydrocarbonsUse of additives by distillation
6.
MULTI-LAYERED TUBE COMPRISING POLYKETONE AND POLYOLEFIN
The present invention relates to a multi-layered tube comprising: an inner layer comprising a polyketone; an outer layer comprising polyolefin; and an adhesive layer disposed between the inner layer and the outer layer and comprising an ethylene-propylene-dimer grafted with a maleic anhydride, and an ethylene butyl acrylate-carbon monoxide copolymer.
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
C09J 151/06 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
An acrylic film can comprise: an acrylic resin comprising 70-98 parts by weight of a methyl methacrylate unit and 2-30 parts by weight of a butyl methacrylate unit; 5-40 parts by weight of core-shell rubber on the basis of 100 parts by weight of the acrylic resin; and 1000- 4000 ppm of poly methyl methacrylate particles.
C08L 51/04 - 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 rubbers
The present invention relates to a cellulose ester film having +C plate optical properties and, more specifically, first, to a phase difference film fabricated by a solvent casting method using a dope comprising a cellulose ester and a specific additive. Also, the present invention relates to a multilayered cellulose ester phase difference film and, more specifically, to a phase difference film which has enhanced phase difference uniformity, and has high compatibility with triacetyl cellulose (TAC), thus enabling the manufacture of a high-quality polarizing plate. The phase difference film according to the present invention exhibits the effects of inhibiting quality deterioration caused when used along with triacetyl cellulose (TAC) and enhancing diagonal visibility when applied to OLEDs and LCD panels.
B32B 23/04 - Layered products essentially comprising cellulosic plastic substances comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
The present invention relates to a method for dehydrogenating an alkane, the method including: a step of feeding into dehydrogenation reactors a feed gas stream containing a hydrocarbon to be dehydrogenated, hydrogen, and steam and performing dehydrogenation, wherein the dehydrogenation step is repeated in five or more sets, the dehydrogenation reactors have two parallel-connected reaction material heaters configured to heat the feed gas stream which is fed into each of the dehydrogenation reactors, and the steam is fed separately to the individual reactors for five or more sets of dehydrogenation steps; and a step of cooling and compressing a production gas stream resulting from the previous step, quenching the compressed product gas stream by passage through a cooling box, separating and purifying the product gas stream having passed through the cooling box, and recovering a product.
C07C 5/32 - Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
B01J 19/24 - Stationary reactors without moving elements inside
C01B 3/56 - Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solidsRegeneration of used solids
C07C 7/00 - Purification, separation or stabilisation of hydrocarbonsUse of additives
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
10.
METHOD FOR PREPARING POLYETHYLENE TEREPHTHALATE POLYMER FOR FILM
The present invention relates to a method for preparing a polyethylene terephthalate polymer for a film, the method adding mixed inorganic particles, which are size-controlled by controlling particle size in advance, in an esterification reaction step when preparing a polyethylene terephthalate polymer. A polyethylene terephthalate polymer prepared by the present invention can be applied to a release PET film requiring a high haze%, and can be used for manufacturing a film, which has more excellent surface characteristics than a film manufactured from a conventional polyethylene terephthalate polymer, has improved particle visibility according to treatment using a high quantity of inorganic particles, reduces push marks on a coating layer according to the aggregation of the inorganic particles, and greatly reduces a decrease rate in haze% before and after silicone release coating.
B29C 48/18 - Articles comprising two or more components, e.g. co-extruded layers the components being layers
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
11.
ACRYLIC FILM HAVING LOW WATER VAPOR TRANSMITTANCE, AND POLARIZING PLATE AND PANEL, WHICH COMPRISE SAME
The present invention provides: an acrylic film manufactured, by a solvent casting method, from a main dope comprising a compound represented by the following chemical formula 1 and an acrylic resin, the acrylic film having an in-plane retardation Ro, measured under conditions of 23°C and 55%RH, of 0-5 nm, having an out-of-plane retardation Rth of -10 to -3 nm, and having a water vapor transmittance rate of 150 g/m2·1233 are respectively and independently a hydrogen atom, a halogen atom, a hydroxyl group or a substituted or unsubstituted C1-12 alkyl group, m:n is 100:0 to 50:50, and the molecular weight is 130,000-200,000 g/mol.
The present disclosure is an acryl film formed from a main dope solution including an acryl resin shown in the following formula 1 and CSR particles, and peel strength measured in peeling speed of 0.5 mpm is 20 gf/2 inch or less, tear strength is 6 gf or more, has excellent peel strength, thereby visual stain by thickness unevenness is improved, and having excellent tear strength and good brittleness.
a and b are an integer and 1 or more.
wherein, MMA is methyl methacrylate unit and BMA is butyl methacrylate unit.
C08L 51/04 - 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 rubbers
C08L 51/00 - 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
C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
The present invention relates to an acrylic film prepared by controlling the amount of a remaining solvent by adding a specific additive, and provides an acrylic film which comprises an acrylic resin comprising 70-96 parts by weight of a methyl methacrylate unit, and 4-30 parts by weight of an alkyl (meth)acrylate unit excluding methyl methacrylate, and one type of additive selected from the group consisting of an aromatic ester-based additive, a phenolic additive and an acrylic additive, and is prepared by a solvent casting method, wherein the injection amount of the additive is 1-10 wt% on the basis of 100 wt% of a main dope solution comprising the acrylic resin, the additive and a solvent when preparation is carried out by the method.
The present invention relates to a dehydrogenation catalyst in which a platinum-group metal, an assistant metal, and an alkali metal or alkaline earth metal component are supported on a carrier, wherein the molar ratio of platinum to the assistant metal is 0.5 to 1.49, and the catalyst has an acidity amount of 20 to 150 μmol KOH/g catalyst when it is titrated with KOH. The dehydrogenation catalyst according to the present invention may prevent coke formation from increasing rapidly when the hydrogen/hydrocarbon ratio in a dehydrogenation reaction is reduced, thereby increasing the productivity of the process. Accordingly, it makes it possible to operate the process under a condition in which the hydrogen/hydrocarbon ratio in a dehydrogenation reaction is reduced, thereby improving the economy of the process.
B01J 35/10 - Solids characterised by their surface properties or porosity
C07C 5/32 - Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
The present invention relates to a method of producing ethylene by separately collecting ethane and ethylene which are by-products of a propylene preparation process using propane dehydrogenation reaction and also combining an existing propylene preparation process with a process of converting ethane to ethylene. According to the present invention, valuable ethylene may be produced by converting most of ethane and ethylene, i.e., by-products of a propane dehydrogenation process, into ethylene without using the ethane as fuel, thereby improving process economic efficiency. Furthermore, a product line in the process of propane dehydrogenation reaction may be changed from a propylene product alone into two products, i.e., propylene and ethylene, and thus the operating conditions of a propylene dehydrogenation reactor and the operating conditions of a de-ethanizer may be adjusted according to the market situation, thereby increasing the production proportion of a favorable product line.
The present invention relates to an acrylic film characterized by being formed from a main dope solution comprising poly(methyl methacrylate) (PMMA) particles and an acrylic resin represented by chemical formula (1), and having a dynamic friction coefficient of 0.7 or lower. The present invention enables improved roll winding quality and quality maintenance over time.
The present invention relates to an acrylic film characterized by: being formed from a main dope solution comprising CSR particles and an acrylic resin represented by chemical formula (1); having peelability of 20gf/2inch or lower when peeled at a peeling speed of 0.5mpm; and having tear strength of 6gf or higher. The present invention has excellent peelability and thus enables reduction of exterior stain due to non-uniform thickness, and has high tear strength and thus has improved brittleness.
C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
C08L 51/04 - 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 rubbers
C08L 51/00 - 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
The present invention relates to an acrylic film characterized by being formed from a main dope solution comprising poly(methyl methacrylate) (PMMA) particles and an acrylic resin represented by chemical formula (1), and having a dynamic friction coefficient of 0.7 or lower. The present invention enables improved roll winding quality and quality maintenance over time.
C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
B29C 41/24 - Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped articleApparatus therefor for making articles of indefinite length
B29C 55/02 - Shaping by stretching, e.g. drawing through a dieApparatus therefor of plates or sheets
The present invention relates to a method for collecting a hard olefin, the method being capable of: achieving the increase in production of propylene and the improvement of processing unit requirement through the input of steam into a 5-stage serially connected dehydrogenation reactor; and improving economic feasibility and selectivity by separately collecting ethane and ethylene, which are byproducts of a propylene preparation process, followed by conversion into ethylene, and thus dualizing a process product group of a propane dehydrogenation reaction from a propylene sole product into propylene and ethylene.
C07C 7/00 - Purification, separation or stabilisation of hydrocarbonsUse of additives
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
The present invention provides a polyketone alloy composition with improved process stability and mechanical properties, the composition being characterized in that one or two polyalkylene carbonates selected from the group consisting of polypropylene carbonate (PPC) and polyethylene carbonate (PEC) are added to a linear alternative polyketone composed of carbon monoxide and at least one olefin-based unsaturated hydrocarbon.
C08L 73/00 - Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups Compositions of derivatives of such polymers
C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
The present invention relates to a polyketone hollow fiber membrane for membrane distillation and, more specifically, to a polyketone hollow fiber membrane using a membrane distillation method, wherein pores of the polyketone hollow fiber membrane are minimized by manufacturing a hollow type membrane distillation separator of a hydrophilic material polyketone, so that sea water fails to pass directly through the membrane but only vapor can pass therethrough.
B01D 71/72 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups
C08L 73/00 - Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups Compositions of derivatives of such polymers
C08G 67/02 - Copolymers of carbon monoxide and aliphatic unsaturated compounds
The present invention relates to a method for dehydrogenating alkane, the method comprising: a step for dehydrogenating propane by supplying hydrogen, steam, and a supply gas stream including a hydrocarbon to be dehydrogenated to a dehydrogenation reactor, the dehydrogenation step being repeated for 5 sets or more, the dehydrogenation reactor being provided with a two-stage reaction raw material heater connected in parallel that heats the supply gas stream supplied to each reactor, and the steam being supplied divided among the reactors respectively that are used for the 5 sets or more of reaction steps; and a step for cooling and compressing a product gas stream of the previous step, passing the product gas stream through a cooling box to rapidly cool the product gas stream, and recovering a product by separating and purifying the product gas stream that has passed through the cooling box. According to the present invention, it is possible to increase the amount of propylene produced and reduce the process unit cost by introducing steam to a dehydrogenation reactor, and since the number of reactors is increased to five such that it is possible to reduce the process unit cost and increase the total heat supply amount by supplying reaction heat divided between each stage, the amount of propylene produced can be increased.
C07C 7/00 - Purification, separation or stabilisation of hydrocarbonsUse of additives
C07C 7/20 - Use of additives, e.g. for stabilisation
B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
B01J 38/04 - Gas or vapour treatingTreating by using liquids vaporisable upon contacting spent catalyst
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
C01B 3/50 - Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
23.
METHOD FOR PREPARING EPOXY GROUP-GRAFTED POLYKETONE COMPATIBILIZER AND FOR PRODUCING POLYKETONE ALLOY RESIN HAVING IMPROVED HEAT RESISTANCE USING SAME
According to a preferred example of the present invention, provided is a polyketone composition having improved compatibility and comprising a linear alternating polyketone composed of carbon monoxide and at least one olefinically unsaturated hydrocarbon, polybutylene terephthalate, and a compatibilizer. The compatibilizer is characterized in that styrene, glycidyl methacrylate are grafted on a polyketone (PSG). The polyketone composition with improved compatibility of the present invention has an effect of improving the compatibility by forming a chemical bond between a grafted epoxy group of the compatibilizer and a hydroxyl group of polybutylene terephthalate. According to another preferred example of the present invention, provided is a polyketone composition having improved tensile strength and comprising a linear alternating polyketone, composed of carbon monoxide and at least one olefinically unsaturated hydrocarbon polyphenylene ether resin or polyester resin, and a compatibilizer. The compatibilizer comprises an epoxy active group or an anhydride group and is characterized by at least one or two selected from the group consisting of a polyketone grafted with styrene, and glycidyl methacrylate (POK-g-styrene/GMS, PSG), a polyketone grafted with glycidyl methacrylate (POK-g-GMA), styrene-maleic anhydride (SMA), ethylene methacrylate, methyl methacrylate-glycidyl methacrylate-ethyl acrylate (MGE), an ethylene-octene elastomeric elastomer grafted with maleic anhydride (EOR-MA), ethylene propylene rubber grafted with maleic anhydride (EPR-MA), and a polymer of ethylene, butyl acrylate, and glycidyl methacrylate. The compatibilizer has an effect of improving heat resistance of conventional polyketones such as tensile strength, color, etc. upon exposure to heat for a long time by forming a chemical bond with a polyether resin or a polyester resin.
C08L 73/00 - Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups Compositions of derivatives of such polymers
C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
C08L 67/03 - Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the hydroxy and the carboxyl groups directly linked to aromatic rings
C08G 67/02 - Copolymers of carbon monoxide and aliphatic unsaturated compounds
C08F 283/00 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass
The present invention relates to a composition comprising: a linear alternating polyketone comprising carbon monoxide and at least one olefinically unsaturated hydrocarbon; talc; glass fiber; and the like, and a polyketone composition having excellent water fastness and mechanical property retention ratios, in comparison to brass and lead materials to be used for a water ball valve, can be developed and suitably applied to a water ball valve. In addition, a polyketone composition having excellent water fastness and mechanical property retention ratios, in comparison to a polyamide material to be conventionally used for a water pipe cap, can be developed and suitably applied to a water pipe cap.
C08L 73/00 - Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups Compositions of derivatives of such polymers
C08G 67/02 - Copolymers of carbon monoxide and aliphatic unsaturated compounds
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
The present invention relates to a dehydrogenation catalyst, which is a dehydrogenation catalyst in which a platinum group metal, auxiliary metal, alkali metal or alkali earth metal component is supported on a support, wherein the molar ratio of platinum with respect to the auxiliary metal is 0.5-1.49 and, when titrated with KOH, the catalyst has an acid site content of a catalyst of 20-150 μmol KOH/g. The dehydrogenation catalyst according to the present invention prevents the phenomenon of a rapid increase of coke in the case of a decline in the hydrogen ratio in the dehydrogenation reaction, thereby enhancing the output of a process, enabling the operation thereof under the condition of a decline in the hydrogen/hydrocarbon ratio, and enhancing the process economics.
The present invention relates to a high-brightness film for a liquid crystal display, a composite sheet, and an LCD structure using same. More specifically, the present invention relates to a high-brightness film for a liquid crystal display, a composite sheet, and an LCD structure using same, wherein the high-brightness film has enhanced brightness and color reproduction range by having a phosphor coating layer comprising a YAG-based phosphor and/or an LuAG-based phosphor formed on one surface of a base film.
C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
The present invention relates to a high-brightness film for a liquid crystal display, a composite sheet, and an LCD structure using same. More specifically, the present invention relates to a high-brightness film for a liquid crystal display, a composite sheet, and an LCD structure using same, wherein the high-brightness film has enhanced brightness and color reproduction range by adding a YAG-based phosphor and/or a LuAG-based phosphor into a base film.
C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
The present invention relates to a method for producing ethylene by separately collecting ethane and ethylene, which are by-products of a propylene preparation process using a propane dehydrogenation reaction, and by combining a process for converting ethane to ethylene with a conventional process for preparing propylene. According to the present invention, economic feasibility of the process can be improved since ethane and ethylene, which are by-products of a propane dehydrogenation process, are not used as cheap fuel and are mostly converted into ethylene so as to produce expensive ethylene. In addition, the production rate of an advantageous product line can be increased since the operation condition of a propane dehydrogenation reactor and the operation condition of a de-ethanizer can be controlled according to market conditions by dividing the process product line of a propane dehydrogenation reaction from a propylene single product into propylene and ethylene.
The present invention relates to a polyketone composition which is prepared by blending and extruding: a linear alternating polyketone consisting of carbon monoxide and at least one olefinically unsaturated hydrocarbon; and a maleic anhydride, wherein a base resin of the produced polyketone has a yellowness index of 15 or less and, more specifically, to a polyketone composition having a maleic anhydride content of 100 ppm to 15,000 ppm with respect to the total weight of the polyketone composition. Also, provided is a polyketone molded part produced using the polyketone composition. The polyketone composition prepared according to the present invention can improve discoloration stability by improving the yellowness index (YI) of the base resin to 15 or less. Thus, the polyketone composition allows for the reduction of a master batch processing cost for a color concentrate, and the cost of a pigment such as titanium dioxide (TiO2), and the like.
C08L 73/00 - Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups Compositions of derivatives of such polymers
C08L 33/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
C08K 5/12 - EstersEther-esters of cyclic polycarboxylic acids
C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
Provided are a novel polyketone polymerization catalyst and a method of preparing a ligand, which can reduce production costs and can enable commercial mass synthesis by using ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine) as a ligand constituting the polykeytone polymerization catalyst, the ligand having a simple structure and a small molecular weight while having high activity.
C07F 9/00 - Compounds containing elements of Groups 5 or 15 of the Periodic Table
C07F 9/655 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having oxygen atoms, with or without sulfur, selenium, or tellurium atoms, as the only ring hetero atoms
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Chemicals used in industry and unprocessed artificial
resins; unprocessed acrylic resins; unprocessed epoxy
resins; unprocessed artificial resins; unprocessed plastics;
unprocessed synthetic resins; celluloids; polymethyl
metacrylate resins; polybutylene resins; polyvinyl acetal
resins; polyester resins; polyethylene resins; polyvinyl
chloride resins; polycarbonate resins. Plastic materials for packaging; plastic film for wrapping;
extensible plastic cling film for palletization; viscose
sheets for wrapping; sheets of reclaimed cellulose for
wrapping; polypropylene foil for wrapping. Artificial resins (semi-finished products); synthetic resins
(semi-finished products); semi-processed plastic substances;
acrylic resins (semi-finished products); semi-worked vinyl
sheets; semi-worked plastic oilcloth; semi-processed
cellulose acetate; semi-worked plastic film; plastic sheet
materials for use in manufacture; plastic film (not for
wrapping); plastic material in extruded form for use in
production; adhesive-coated plastic sheets; polymer film
used for manufacturing electronic circuits; anti-dazzle
films for windows (tinted films); filtering materials
(semi-processed foams or films of plastic); polypropylene
foil, other than for wrapping; foil of regenerated cellulose
(other than for wrapping); sheets of regenerated cellulose,
other than for wrapping; viscose sheets (other than for
wrapping).
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
(1) Chemicals used in industry, namely, plasticizers, vulcanizing preparations, cellulose esters for industrial purposes, emollients for industrial purposes, carbon black for industrial purposes, ethyl ether, ketones, and carbon monoxide; unprocessed acrylic resins; unprocessed epoxy resins; unprocessed artificial resins; unprocessed plastics; unprocessed synthetic resins; polymethyl metacrylate resins; polybutylene resins; polyvinyl acetal resins; polyester resins; polyethylene resins; polyvinyl chloride resins; polycarbonate resins
(2) Plastic film for packaging; plastic film for wrapping; extensible plastic cling film for palletization; viscose sheets for wrapping; sheets of reclaimed cellulose for wrapping; polypropylene foil for packing
(3) Semi-processed plastic substances; semi-worked plastic oilcloth; polymer film used for manufacturing electronic circuits; semi-processed plastic materials, namely, semi-worked vinyl sheets, semi-processed cellulose acetate, semi-worked plastic film, plastics in extruded form for use in manufacture, plastic films, tinted films for windows, filtering materials namely, semi-processed foams or films of plastic; polypropylene foil, foil of regenerated cellulose, sheets of reclaimed cellulose, and viscose sheets; processed acrylic resins; processed artificial resins; processed synthetic resins
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Chemicals used in industry and unprocessed artificial resins [ ; unprocessed acrylic resins; unprocessed epoxy resins; unprocessed plastics; unprocessed synthetic resins; cellulose; unprocessed polymethylene metacrylate resins; unprocessed polybutylene resins; unprocessed polyvinyl acetate resins; unprocessed polyester resins; unprocessed polyethylene resins; unprocessed polyvinyl chloride resins; unprocessed polycarbonate resins ] [ Plastic film for packaging; plastic film for wrapping; extensible plastic cling film for palletization; viscose sheets for wrapping; sheets of reclaimed cellulose for wrapping; polypropylene foil for wrapping ] Semi-processed artificial resins; [ semi-processed synthetic resins; ] semi-processed plastic substances [ ; semi-processed acrylic resins; semi-worked vinyl sheets for use in manufacturing; semi-processed cellulose acetate for use in manufacturing a wide variety of plastic products; semi-worked synthetic plastic as semi-finished products in the form of films; plastic sheet materials in extruded form for use in manufacture; plastic film for packing, cushioning, or stuffing purposes, other than for wrapping; plastic material in extruded form for use in production; adhesive-coated plastic sheets for use in manufacturing; polymer film used for manufacturing electronic circuits; tinted plastic films for windows; semi-processed plastics in the nature of filtering materials in the water treatment industry; polypropylene foil, other than for wrapping; foil of regenerated cellulose, other than for wrapping, for industrial and commercial use; sheets of regenerated cellulose used as a packing material, other than for wrapping; viscose sheets, other than for wrapping, for industrial and commercial use ]
The present invention relates to a submerged hollow fiber membrane module that includes a partition membrane having a slanted slit-shaped opening, and thus capable of not only improving operating efficiency of a hollow fiber membrane module by accelerating the water flow, but also allowing easy discharge of highly concentrated raw water around the hollow fiber membrane to the outside of the module during a reverse wash process.
Disclosed is a polylactic acid composition with improved heat-resistance and improved impact-resistance. Specifically, in the disclosed polylactic acid composition, both impact strength and heat-resistance are improved by mixing 30 to 80 wt % of polyketone and 10 to 40 wt % of modified rubber. The disclosed polylactic acid composition does not only exhibit excellent in heat resistance, chemical resistance, fuel permeation resistance, abrasion resistance, etc., but also has improved impact-resistance and improved heat resistance. Thus, it is possible to employ polylactic acid as a bioplastic in interior/exterior parts of a vehicle.
C08F 34/02 - Homopolymers or copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain and having one or more carbon-to-carbon double bonds in a heterocyclic ring in a ring containing oxygen
C08F 16/34 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical by an aldehydo radical
C08F 36/00 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
36.
Composition of polyketone with high impact strength
The present invention provides a polyketone composition having about 40˜90 wt % of polyketone, about 5˜40 wt % of polyamide, and about 5˜20 wt % of modified rubber. The composition of the present invention greatly improves the impact resistance of polyketone, which has increased heat resistance, chemical resistance, fuel permeation resistance, abrasion resistance or the like, and thus may be widely applied in various industrial fields, such as automotive parts including wheel covers, wheel caps, fuel filler necks, fuel tanks, fuel tubes, center fascias, door handles, roof rack covers, gear, junction boxes, connectors, seat backs or the like, electric/electronic parts, and household items, thereby providing durability of the parts and price competition.
C08L 51/04 - 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 rubbers
37.
SUBMERGED HOLLOW FIBER MEMBRANE MODULE HAVING PARTITION MEMBRANE WITH SLANTED OPENINGS
The present invention relates to a submerged hollow fiber membrane module that includes a partition membrane having a slanted slit-shaped opening, and thus capable of not only improving operating efficiency of a hollow fiber membrane module by accelerating the water flow, but also allowing easy discharge of highly concentrated raw water around the hollow fiber membrane to the outside of the module during a reverse wash process.
This invention relates to a dehydrogenation catalyst having a macropore size and a high active density of platinum, suitable for use in dehydrogenation of a hydrocarbon gas. This dehydrogenation catalyst having a macropore size and a high active density of platinum is highly active, has high active density per unit catalytic surface area, facilitates material transfer of reactants and products, delays deactivation due to coke formation, keeps the initial activity constant after being regenerated thanks to the disposal of coke, has high strength and so is resistant to external impact, and undergoes neither structural changes due to heat nor changes in the properties of active materials.
The present invention relates to a method for separating and refining high purity 2,6-naphthalene dicarboxylic acid having an excellent color and purity of 99.9% or more by using crude 2,6-naphthalene dicarboxylic acid. And more particularly, the present invention relates to a method for separating and refining 2,6-naphthalene dicarboxylic acid, in which adjustment of pressure and temperature during multiple-step crystallization process enables controlling nucleation and the crystal growth rate, thereby allowing a particle size distribution and form to be controlled.
2), a silica-alumina mixture and zeolite. The metal catalyst also contains 0.05 to 2.5% by weight of platinum (Pt), 0.1 to 3.0% by weight of tin (Sn) or indium (In), 0.5 to 15.0% by weight of at least one selected from the group consisting of potassium (K), magnesium (Mg) and cesium (Cs), 0.3 to 3.0% by weight of chlorine, and 0.01 to 3.0 % by weight of zinc (Zn) or gallium (Ga) as active components based on an element weight of the final catalyst.
High-purity 2,6-dimethylnaphthalene is prepared by (1) subjecting a dimethylnaphthalene isomer mixture rich in 1,5-dimethylnaphthalene, high boiling point materials, unreacted 1,5-dimethyltetralin, and low boiling point materials, which are produced from a dehydrogenation reaction of 1,5-dimethyltetralin, to separation, using a distillation column; subjecting the dimethylnaphthalene mixture separated by the distillation column to liquid state isomerization in the presence of an isomerization catalyst; (3) a first crystallization (melt crystallization process) by cooling the product of liquid state isomerization with a refrigerant without a solvent to form crystals; and (4) a second crystallization (solution crystallization process) of mixing the crystals of the first crystallization step with a solvent to form crystals.
An apparatus and a method for effectively recovering acetic acid and catalyst from a mother liquor discharged from a series of processes including an oxidation process, a crystallization process and a solid-liquid separation process, in a continuous process for preparing naphthalenedicarboxylic acid by oxidizing dimethylnaphthalene in the presence of an oxygen-containing gas and an acetic acid solvent, using a catalyst system comprising a transition metal such as cobalt or manganese, and a bromine-based compound, are provided.
A method for separating and purifying 2,6-dimethylnaphthalene, is provided in which 2,6-dimethylnaphthalene of high purity is obtained from a mixture of dimethylnaphthalene isomers with a high yield, by means of a combined process of column melt crystallization and sweating operation.
The present invention relates to a method for preparing 1,5-dimethyltetralin using a dealuminated zeolite beta catalyst.
The preparation method of 1,5-dimethyltetralin according to the present invention has the effects of not only showing high conversion and high selectivity of 1,5-dimethyltetralin but also of suppressing deactivation of a zeolite beta catalyst so as to enhance the catalyst life, by using the dealuminated zeolite beta catalyst.
16 - Paper, cardboard and goods made from these materials
Goods & Services
Extensible plastic film for industrial and commercial wrapping and packaging; extensible polyester film for industrial and commercial wrapping and packaging.
17 - Rubber and plastic; packing and insulating materials
Goods & Services
EXTENSIBLE PLASTIC FILM FOR INDUSTRIAL AND COMMERCIAL WRAPPING AND PACKAGING, EXTENSIBLE POLYESTER FILM FOR INDUSTRIAL AND COMMERCIAL WRAPPING AND PACKAGING, EXTENSIBLE NYLON FILM FOR INDUSTRIAL AND COMMERCIAL WRAPPING AND PACKAGING
