A styrenic block copolymer composition comprising a hydrogenated high vinyl block copolymer and/or a high vinyl styrene-ethylene/butylene-styrene (SEBS) copolymer is mixed with a thermoplastic resin to form a thermoplastic elastomer (TPE) composition. TPE compositions comprising hydrogenated high vinyl block copolymers with relatively high molecular weight compounded with polypropylene provide compounds with high flow properties, high clarity, low haze, which exhibit higher tensile strength and elongation at break than prior art compositions. High vinyl SEBS TPE compositions exhibiting high melt flow can be used in many applications, either as a neat polymer or in a compound, to produce medical devices including tubes, over molding applications for personal care, soft touch materials, automotive parts, blown film, dipped goods, materials with oxygen absorbing capability, oil gel compositions, radiation curable hot melt adhesive compositions, hot melt pressure sensitive adhesives, sealant formulations, elastic films, fibers and non-woven compounds.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
Dual composition block copolymers made from conjugated diene and monovinyl aromatic monomers in batch organolithium initiated polymerization show advantageous performance in the production of crosslinked microcellular rubber compounds and pressure sensitive hot melt adhesives. The dual composition block copolymers are partially coupled with a coupling agent linking inner monovinyl aromatic blocks. Their un-coupled low molecular weight fraction has greater monovinyl aromatic repeating unit content than their coupled high molecular weight fraction. Crosslinked microcellular rubber articles made from the dual composition block copolymers exhibit lower density, smaller and more homogeneous cell size, higher softness and higher resiliency than prior art block copolymers. Rubber compounding of formulations comprising the dual composition block copolymers proceed at slightly lower torque and slightly lower temperature than with prior art block copolymers. Pressure sensitive hot melt adhesives formulated with the dual composition block copolymers are very well suited for labels, exhibiting higher tack and higher softening temperature than those made from prior art block copolymers.
C08F 297/02 - 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 anionic type
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C08J 9/10 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
A counter tapered diblock copolymer composition comprises a monovinyl aromatic monomer A polymerized with a conjugated diene monomer B to form the structure A- [A/B], where the [A/B] block is a copolymer of the A and B monomers that is counter tapered, which means the ratio of B to A is lower proximal to the A block relative to the ratio of B to A distal to the A block. The [A/B] block preferably has a vinyl content that is higher proximal to the A block relative to the vinyl content distal to the A block. The diblock copolymer is preferably partially coupled or formed with a multifunctional initiator to provide a mixture of the diblock copolymer composition and a linear (A- [A/B])-X-([B/A]-A) structure and/or a coupled radial and/or multiarm structure (A- [A/B])n-X, where X is the residue of a coupling agent or an initiator. Asphalt and adhesive compositions are made with the diblock copolymer composition and with the mixture.
Polar modifier systems based on a blend of DTHFP, ETE, TMEDA, DMTHFMA and/or functionally similar compounds with BDMAEE and SMT are used to make block copolymers having high levels of pendant vinyl double bond repeat units, which is through highly selective 1,2-bond butadiene addition, low vinylcyclopentane formation, unimodal narrow molecular weight distribution, and a low level of randomized co-monomer repeat units. The block copolymers have very high levels of 1,2-vinyl content and high 3,4-vinyl bond addition of the conjugated diene monomer and low vinylcyclopentane content. The polar modifier systems provide a fast polymerization rate, with a unimodal narrow molecular weight distribution. The polar modifier systems allow operation at a higher temperature than in prior art systems, which reduces cooling requirements.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
A counter tapered diblock copolymer composition comprises a monovinyl aromatic monomer A polymerized with a conjugated diene monomer B to form the structure A-[A/B], where the [A/B] block is a copolymer of the A and B monomers that is counter tapered, which means the ratio of B to A is lower proximal to the A block relative to the ratio of B to A distal to the A block. The [A/B] block preferably has a vinyl content that is higher proximal to the A block relative to the vinyl content distal to the A block. The diblock copolymer is preferably partially coupled or formed with a multifunctional initiator to provide a mixture of the diblock copolymer composition and a linear (A-[A/B])-X-([B/A]-A) structure and/or a coupled radial and/or multiarm structure (A-[A/B])n-X, where X is the residue of a coupling agent or an initiator. Asphalt and adhesive compositions are made with the diblock copolymer composition and with the mixture.
The present invention provides a modified diene copolymer composition having a modified A-B-C or C-B-A copolymer comprising at least one conjugated diene monomer and at least one unsubstituted vinyl aromatic monomer and at least one substituted vinyl aromatic monomer, wherein each block or segment in the modified A-B-C or C-B-A copolymer is either a homopolymer or a copolymer comprising at least one conjugated diene monomer and/or at least one unsubstituted vinyl aromatic monomer and/or at least one substituted vinyl aromatic monomer, wherein any of the copolymers have a distribution configuration that is tapered, counter tapered, random or controlled, and wherein any of the homopolymers or the copolymers comprising at least one conjugated diene monomer and/or at least one unsubstituted vinyl aromatic monomer may be in-chain and/or chain-end modified with at least one unit of at least one substituted vinyl aromatic monomer; optionally having a block copolymer made from the modified A-B-C or C-B-A copolymer, wherein the block copolymer comprises at least two of the modified A-B-C or C-B-A copolymers. The invention also provides a process for making the modified diene copolymer composition.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C04B 26/26 - Bituminous materials, e.g. tar, pitch
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C09D 153/02 - Vinyl aromatic monomers and conjugated dienes
C09J 153/02 - Vinyl aromatic monomers and conjugated dienes
C09K 3/10 - Materials not provided for elsewhere for sealing or packing joints or covers
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
Dual composition block copolymers made from conjugated diene and monovinyl aromatic monomers in batch organolithium initiated polymerization show advantageous performance in the production of crosslinked microcellular rubber compounds and pressure sensitive hot melt adhesives. The dual composition block copolymers are partially coupled with a coupling agent linking inner monovinyl aromatic blocks. Their un-coupled low molecular weight fraction has greater monovinyl aromatic repeating unit content than their coupled high molecular weight fraction. Crosslinked microcellular rubber articles made from the dual composition block copolymers exhibit lower density, smaller and more homogeneous cell size, higher softness and higher resiliency than prior art block copolymers. Rubber compounding of formulations comprising the dual composition block copolymers proceed at slightly lower torque and slightly lower temperature than with prior art block copolymers. Pressure sensitive hot melt adhesives formulated with the dual composition block copolymers are very well suited for labels, exhibiting higher tack and higher softening temperature than those made from prior art block copolymers.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C08F 297/02 - 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 anionic type
C08J 9/10 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
The present invention provides a modified diene copolymer composition having a modified A-B-C or C-B-A copolymer comprising at least one conjugated diene monomer and at least one unsubstituted vinyl aromatic monomer and at least one substituted vinyl aromatic monomer, wherein each block or segment in the modified A-B-C or C-B-A copolymer is either a homopolymer or a copolymer comprising comprising at least one conjugated diene monomer and/or at least one unsubstituted vinyl aromatic monomer may be in-chain and/or chain-end modified with at least one unit of at least one substituted vinyl aromatic monomer; optionally having a block copolymer made from the modified A-B-C or C-B-A copolymer, wherein the block copolymer comprises at least two of the modified A-B-C or C-B-A copolymers. The invention also provides a process for making the modified diene copolymer composition.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
Dual composition block copolymers made from conjugated diene and monovinyl aromatic monomers in batch organolithium initiated polymerization show advantageous performance in the production of crosslinked microcellular rubber compounds and pressure sensitive hot melt adhesives. The dual composition block copolymers are partially coupled with a coupling agent linking inner monovinyl aromatic blocks. Their un-coupled low molecular weight fraction has greater monovinyl aromatic repeating unit content than their coupled high molecular weight fraction. Crosslinked microcellular rubber articles made from the dual composition block copolymers exhibit lower density, smaller and more homogeneous cell size, higher softness and higher resiliency than prior art block copolymers. Rubber compounding of formulations comprising the dual composition block copolymers proceed at slightly lower torque and slightly lower temperature than with prior art block copolymers. Pressure sensitive hot melt adhesives formulated with the dual composition block copolymers are very well suited for labels, exhibiting higher tack and higher softening temperature than those made from prior art block copolymers.
Dual composition block copolymers made from conjugated diene and monovinyl aromatic monomers in batch organolithium initiated polymerization show advantageous performance in the production of crosslinked microcellular rubber compounds and pressure sensitive hot melt adhesives. The dual composition block copolymers are partially coupled with a coupling agent linking inner monovinyl aromatic blocks. Their un-coupled low molecular weight fraction has greater monovinyl aromatic repeating unit content than their coupled high molecular weight fraction. Crosslinked microcellular rubber articles made from these copolymers exhibit lower density, smaller and more homogeneous cell size, higher softness and higher resiliency than prior art block copolymers. Rubber compounding of formulations comprising the copolymers proceed at slightly lower torque and slightly lower temperature than with prior art block copolymers. Pressure sensitive hot melt adhesives formulated with the dual composition block copolymers are very well suited for labels, exhibiting higher tack and higher softening temperature.
Polar modifier systems based on a blend of DTHFP, ETE, TMEDA, DMTHFMA and/or functionally similar compounds with BDMAEE and SMT are used to make block copolymers having high levels of pendant vinyl double bond repeat units, which is through highly selective 1,2-bond butadiene addition, low vinylcyclopentane formation, unimodal narrow molecular weight distribution, and a low level of randomized co-monomer repeat units. The block copolymers have very high levels of 1,2-vinyl content and high 3,4-vinyl bond addition of the conjugated diene monomer and low vinylcyclopentane content. The polar modifier systems provide a fast polymerization rate, with a unimodal narrow molecular weight distribution. The polar modifier systems allow operation at a higher temperature than in prior art systems, which reduces cooling requirements.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
15.
Processes for making masterbatches of rubber and silica
A process is provided for making a silica masterbatch, that contains silica and solution-made rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition. A process is also provided for making a masterbatch of silica, a solution-made rubber and an emulsion-made rubber.
A process is provided for making a silica masterbatch that contains silica and solution-made rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition, A process is also provided for making a masterbatch of silica, a solution-made rubber and an emulsion-made rubber.
Polar modifier systems based on a blend of DTHFP, ETE, TMEDA, DMTHFMA and/or functionally similar compounds with BDMAEE and SMT are used to make block copolymers having high levels of pendant vinyl double bond repeat units, which is through highly selective 1,2-bond butadiene addition, low vinylcyelopentane formation, unimodal narrow molecular weight distribution, and a low level of randomized co-monomer repeat units. The block copolymers have very high levels of 1,2-vinyl content and high 3,4-vinyl bond addition of the conjugated diene monomer and low vinylcyelopentane content, the: polar modifier systems provide a fast polymerization rate, with a unimodal narrow molecular weight distribution. The polar modifier systems allow operation at a higher temperature than in prior art systems, which reduces cooling requirements.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C09J 153/02 - Vinyl aromatic monomers and conjugated dienes
18.
POLAR MODIFIER SYSTEMS FOR HIGH VINYL BLOCK COPOLYMERIZATION
Polar modifier systems based on a blend of DTHFP, ETE, TMEDA, DMTHFMA and/or functionally similar compounds with BDMAEE and SMT are used to make block copolymers having high levels of pendant vinyl double bond repeat units, which is through highly selective 1.2-bond butadiene addition, low vinylcyclopentane formation, unimodal narrow molecular weight distribution, and a low level of randomized comonomer repeat units. The block copolymers have very high levels of 1,2-vinyl content and high 3,4-vinyl bond addition of the conjugated diene monomer and low vinylcyclopentane content. The polar modifier systems provide a fast polymerization rate, with a unimodal narrow molecular weight distribution. The polar modifier systems allow operation at a higher temperature than in prior art systems, which reduces cooling requirements.
C08F 4/08 - Metallic compounds other than hydrides and other than metallo-organic compoundsBoron halide or aluminium halide complexes with organic compounds containing oxygen of alkali metals
C08F 257/02 - Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group on to polymers of styrene or alkyl-substituted styrenes
C09J 153/02 - Vinyl aromatic monomers and conjugated dienes
19.
Manually or remotely-controlled rolling-ball apparatus for measuring instantaneous adhesion
A measuring apparatus to measure adhesive performance of a Pressure Sensitive tape or label, which includes an electric or pneumatic actuator that can be triggered manually or remotely to perform a rolling ball tack evaluation at different or extreme conditions to those standardized in an adhesives laboratory, by using a small laboratory oven or small weathering chamber to simulate those extreme conditions. Also, installing this apparatus inside of those chambers and triggering it remotely through the mentioned actuator installed in the apparatus. The triggering systems includes; a power source to convert the standard laboratory high voltage source to low DC voltage to avoid the risk of an electric shock during the apparatus operation, a couple of metallic isolated cables for electric conduction of voltage to the actuator electric coil, an electric control box containing a momentary push button switch, the actuator containing an electric coil, a spring and a metallic mobile piston, and a mechanical fastening system to attach the actuator to the apparatus and the piston to the mechanical ball release system.
G01N 19/04 - Measuring adhesive force between materials, e.g. of sealing tape, of coating
G01N 19/00 - Investigating materials by mechanical methods
B60G 15/02 - Resilient suspensions characterised by arrangement, location, or type of combined spring and vibration- damper, e.g. telescopic type having mechanical spring
The invention relates to compositions of cement and concrete having properties of resistance, modulus and expansion which are significantly improved, using an additive for cement based on thermoplastic styrene-butadiene-styrene (SBS) copolymer in cationic latex, when compared with non-modified cement and concrete references.
C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
A counter tapered thermoplastic elastomer composition comprising: (a) a counter tapered diblock A-[A/B] copolymer with a peak molecular weight from 20,000 to 250,000, which includes a monovinyl aromatic homopolymer block A with a peak molecular weight of at least 8,000 and a counter tapered copolymer block [A/B] with a vinyl content of at least 15 weight percent based on the amount of conjugated diene units in the diblock copolymer; and (b) a block copolymer selected from the group consisting of linear triblock copolymers having a peak molecular weight that is at least about 1.5 times the peak molecular weight of the counter tapered diblock A- [A/B] copolymer described in (a), multiarm coupled block copolymers having a peak molecular weight that is at least about 2.5 times the peak molecular weight of the counter tapered diblock A-[A/B] copolymer described in (a), and mixtures thereof; and (c) wherein the ratio of (a) to (b) in the counter tapered thermoplastic elastomer composition is from about 1 :5 to about 5:1.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
A counter tapered thermoplastic elastomer composition comprising: (a) a counter tapered diblock A-[A/B] copolymer with a peak molecular weight from 20,000 to 250,000, which includes a monovinyl aromatic homopolymer block A with a peak molecular weight of at least 8,000 and a counter tapered copolymer block [A/B] with a vinyl content of at least 15 weight percent based on the amount of conjugated diene units in the diblock copolymer; and (b) a block copolymer selected from the group consisting of linear triblock copolymers having a peak molecular weight that is at least about 1.5 times the peak molecular weight of the counter tapered diblock A- [A/B] copolymer described in (a), multiarm coupled block copolymers having a peak molecular weight that is at least about 2.5 times the peak molecular weight of the counter tapered diblock A-[A/B] copolymer described in (a), and mixtures thereof; and (c) wherein the ratio of (a) to (b) in the counter tapered thermoplastic elastomer composition is from about 1 :5 to about 5:1.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
A counter tapered thermoplastic elastomer composition comprising: (a) a counter tapered diblock A-[A/B] copolymer with a peak molecular weight from 20,000 to 250,000, which includes a monovinyl aromatic homopolymer block A with a peak molecular weight of at least 8,000 and a counter tapered copolymer block [A/B] with a vinyl content of at least 15 weight percent based on the amount of conjugated diene units in the diblock copolymer; and (b) a block copolymer selected from the group consisting of linear triblock copolymers having a peak molecular weight that is at least about 1.5 times the peak molecular weight of the counter tapered diblock A-[A/B] copolymer described in (a), multiarm coupled block copolymers having a peak molecular weight that is at least about 2.5 times the peak molecular weight of the counter tapered diblock A-[A/B] copolymer described in (a), and mixtures thereof; and (c) wherein the ratio of (a) to (b) in the counter tapered thermoplastic elastomer composition is from about 1:5 to about 5:1. The counter tapered thermoplastic elastomer compositions provide in the applications: i) easy processing such as short dispersion time, low mixing temperature, low viscosity, excellent storage stability; and ii) better reinforcement such as high elastic response, wide range of performance grade, high adherence, higher filler loading capacity, and better compromise between high and low temperature properties; which make them suitable for a broad range of applications such as road paving, roofing, shingles, waterproofing membranes, adhesive tapes and labels, contact and sprayable adhesives, and sealants.
C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
The invention relates to compositions of cement and concrete having properties of resistance, modulus and expansion which are significantly improved, using an additive for cement based on thermoplastic styrene-butadiene-styrene (SBS) copolymer in cationic latex, when compared with non-modified cement and concrete references.
The invention relates to compositions of cement and concrete having properties of resistance, modulus and expansion which are significantly improved, using an additive for cement based on thermoplastic styrene-butadiene-styrene (SBS) copolymer in cationic latex, when compared with non-modified cement and concrete references.
A measuring apparatus to measure adhesive performance of a Pressure Sensitive tape or label, which includes an electric or pneumatic actuator that can be triggered manually or remotely to perform a rolling ball tack evaluation at different or extreme conditions to those standardized in an adhesives laboratory, by using a small laboratory oven or small weathering chamber to simulate those extreme conditions. Also, installing this apparatus inside of those chambers and triggering it remotely through the mentioned actuator installed in the apparatus.
A raw elastomeric composition in free-flowing pellet form is described, which comprises a raw elastomer with molecular weight from 50,000 to 400,000 Da, and an anti-block agent comprising inorganic fillers, capable of forming emulsions in water. Likewise, a process for obtaining said raw elastomeric compositions in free-flowing pellet form, comprising the steps of: a) polymerizing at least one monomer through solution polymerization in order to obtain elastomer crumb; b) forming an aqueous suspension of the elastomer crumbs; c) dewatering the aqueous suspension; d) adding an anti-block agent comprising inorganic fillers capable of forming emulsions in water; e) drying the dewatered suspension; and f) pelletizing the elastomer to form a raw elastomeric composition in free-flowing pellets form. The raw elastomeric composition in free-flowing pellets form thus obtained can be used as an adhesive composition, in asphalt modification and in asphalt emulsions.
C08L 95/00 - Compositions of bituminous materials, e.g. asphalt, tar or pitch
C09J 147/00 - Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bondsAdhesives based on derivatives of such polymers
A raw elastomeric composition in free-flowing pellet form is described, which comprises a raw elastomer with molecular weight from 50,000 to 400,000 Da, and an anti-block agent comprising inorganic fillers, capable of forming emulsions in water. Likewise, a process for obtaining said raw elastomeric compositions in free-flowing pellet form, comprising the steps of: a) polymerizing at least one monomer through solution polymerization in order to obtain elastomer crumb; b) forming an aqueous suspension of the elastomer crumbs; c) dewatering the aqueous suspension; d) adding an anti-block agent comprising inorganic fillers capable of forming emulsions in water; e) drying the dewatered suspension; and f) pelletizing the elastomer to form a raw elastomeric composition in free-flowing pellets form. The raw elastomeric composition in free-flowing pellets form thus obtained can be used as an adhesive composition, in asphalt modification and in asphalt emulsions.
C08L 95/00 - Compositions of bituminous materials, e.g. asphalt, tar or pitch
C09J 147/00 - Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bondsAdhesives based on derivatives of such polymers
A raw elastomeric composition in free-flowing pellet form is described, which comprises a raw elastomer with molecular weight from 50,000 to 400,000 Da, and an anti-block agent comprising inorganic fillers, capable of forming emulsions in water. Likewise, a process for obtaining said raw elastomeric compositions in free-flowing pellet form, comprising the steps of: a) polymerizing at least one monomer through solution polymerization in order to obtain elastomer crumb; b) forming an aqueous suspension of the elastomer crumbs; c) dewatering the aqueous suspension; d) adding an anti-block agent comprising inorganic fillers capable of forming emulsions in water; e) drying the dewatered suspension; and f) pelletizing the elastomer to form a raw elastomeric composition in free-flowing pellets form. The raw elastomeric composition in free-flowing pellets form thus obtained can be used as an adhesive composition, in asphalt modification and in asphalt emulsions.
C08K 3/00 - Use of inorganic substances as compounding ingredients
C09J 147/00 - Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bondsAdhesives based on derivatives of such polymers
A raw elastomeric composition in free-flowing pellet form is described, which comprises a raw elastomer with molecular weight from 50,000 to 400,000 Da, and an anti-block agent comprising inorganic fillers, capable of forming emulsions in water. Likewise, a process for obtaining said raw elastomeric compositions in free-flowing pellet form, comprising the steps of: a) polymerizing at least one monomer through solution polymerization in order to obtain elastomer crumb; b) forming an aqueous suspension of the elastomer crumbs; c) dewatering the aqueous suspension; d) adding an anti-block agent comprising inorganic fillers capable of forming emulsions in water; e) drying the dewatered suspension; and f) pelletizing the elastomer to form a raw elastomeric composition in free-flowing pellets form. The raw elastomeric composition in free-flowing pellets form thus obtained can be used as an adhesive composition, in asphalt modification and in asphalt emulsions.
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
C08L 95/00 - Compositions of bituminous materials, e.g. asphalt, tar or pitch
A raw elastomeric composition in free-flowing pellet form is described, which comprises a raw elastomer with molecular weight from 50,000 to 400,000 Da, and an anti-block agent comprising inorganic fillers, capable of forming emulsions in water. Likewise, a process for obtaining said raw elastomeric compositions in free-flowing pellet form, comprising the steps of: a) polymerizing at least one monomer through solution polymerization in order to obtain elastomer crumb; b) forming an aqueous suspension of the elastomer crumbs; c) dewatering the aqueous suspension; d) adding an anti-block agent comprising inorganic fillers capable of forming emulsions in water; e) drying the dewatered suspension; and f) pelletizing the elastomer to form a raw elastomeric composition in free-flowing pellets form. The raw elastomeric composition in free-flowing pellets form thus obtained can be used as an adhesive composition, in asphalt modification and in asphalt emulsions.
A tapered triblock copolymer having controlled vinyl distribution, enlarged middle block with intermediate composition and microstructure, increased compatibility between its adjacent blocks, good processing characteristics and a peak average molecular weight between 25,000 and 300,000 is made by anionically polymerizing conjugated diene and monovinyl aromatic monomers, polar modifier and initiator to make a first block rich in conjugated diene, forming a second block that is a copolymer of the conjugated diene and the monovinyl aromatic monomer and which is less rich in the conjugated diene than the first block, and forming a third block that is a homopolymer of the monovinyl aromatic monomer. The first, second and third blocks comprise 30 to 60, 20 to 50wt % and 10 to 40 wt % of the tapered triblock copolymer, respectively. The tapered triblock copolymers may be used as asphalt modifiers, adhesives, sealants, compatibilizers, reinforcing agents and impact modifiers.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
A tapered triblock copolymer having controlled vinyl distribution, enlarged middle block with intermediate composition and microstructure, increased compatibility between its adjacent blocks, good processing characteristics and a peak average molecular weight between 25,000 and 300,000 is made by anionically polymerizing conjugated diene and monovinyl aromatic monomers, polar modifier and initiator to make a first block rich in conjugated diene, forming a second block that is a copolymer of the conjugated diene and the monovinyl aromatic monomer and which is less rich in the conjugated diene than the first block, and forming a third block that is a homopolymer of the monovinyl aromatic monomer. The first, second and third blocks comprise 30 to 60, 20 to 50 wt % and 10 to 40 wt % of the tapered triblock copolymer, respectively. The tapered triblock copolymers may be used as asphalt modifiers, adhesives, sealants, compatibilizers, reinforcing agents and impact modifiers.
C08L 95/00 - Compositions of bituminous materials, e.g. asphalt, tar or pitch
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C09J 153/02 - Vinyl aromatic monomers and conjugated dienes
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
A radial multi-block copolymer composition comprising a polystyrene block Al, a hard block A2 comprising another type of monovinylarene monomer, two soft blocks B1 and B2 of conjugated diene monomer and a coupling agent, the composition of the radial multi- block copolymer having the structure (B1A1A2B2)HZ, where the weight percent of n=5+ is greater than about 40 and Z is a residue of the coupling agent. A process comprising (a) anionically polymerizing styrene monomer Al, at least one monovinylarene monomer A2 other than styrene, and at least one conjugated diene monomer B1 to form multi-block copolymer chains having the structure (B1A1A2), wherein the amount of monovinylarene monomer A2 is from about 0.5 wt % to about 80 wt % of the total amount to form a hard block A1A2; (b) anionically polymerizing at least one conjugated diene monomer to form copolymer chains having a soft block B2 and a polydienyllithium carbanion at the end of the copolymer chains; (c) adding a metal alkyl coupling promoter, preferably triethylaluminum, after initiating anionic polymerization and before reaching a peak reaction temperature; and (d) mixing in a coupling agent to form a copolymer having a residue (Z) of the coupling agent, wherein the copolymer is a radial multi-block copolymer having the structure (B1A1A2B2)J1Z, and wherein the weight percent of n=5+ is greater than about 40. The radial multi-block copolymer has application in pressure-sensitive adhesives, engineering plastics, and polymer-modified asphalts with good control of viscosity and without yellowness.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
C09J 153/02 - Vinyl aromatic monomers and conjugated dienes
(c) adding a coupling agent having more than two functional groups to form the radial multi-block copolymer, wherein the radial multi-block copolymer comprises a residue Z derived from the coupling agent and block copolymer chains from step (b) coupled to the residue Z.
C08F 297/00 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
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
C08L 95/00 - Compositions of bituminous materials, e.g. asphalt, tar or pitch
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C09J 153/02 - Vinyl aromatic monomers and conjugated dienes
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
39.
Polymer composition with elastomeric properties at wide temperature ranges and process for the preparation thereof
Centrode Investigacion En Quimica Aplicada (CIQA) (Mexico)
Inventor
Kniajanski, Sergei
Garcia-Zamora, Maricela
Corona-Galvan, Sergio
Flores-Flores, Rodolfo
Garcia-Ramirez, Marcela
Cadenas-Pliego, Gregorio
Abstract
The invention relates to a polymeric composition having elastomeric properties over wide temperature ranges, of the type that comprises polymers and/of copolymers which are derived from substituted or non-substituted vinylaromatic monomers and compatible, homogeneous diene monomers. The inventive composition is based on stereoregular polymers and does not require the use of compatibilizer agents. The invention further relates to the method of obtaining said compositions and of hydrogenating same without the need for additional catalysts or methods.
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
This invention describes the obtainment of impact-resistant materials from a block copolymer that comprises as monomers an alkadiene (conjugated diene) and a vinyl aromatic compound, which is used as impact modifier to obtain such materials and in which, at least, one of the blocks of the vinyl aromatic compound is polydisperse. The invention allows obtaining morphologies such as rods, points or capsules by incorporating such copolymer into a polymeric matrix derived from vinyl aromatic monomers independently from other agents such as chain transfer agents, and achieving increases, in the impact values up to 50% through the use of the copolymer of this invention.
C08F 297/04 - 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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
C08L 53/02 - 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 of vinyl aromatic monomers and conjugated dienes
C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins, unprocessed plastics; manures; fire extinguishing compositions; tempering and soldering preparations; chemical substances for preserving foodstuffs; tanning substances; adhesives used in industry. Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
