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7381773 |
Clear and flexible propylene polymer compositions
A propylene polymer composition having a melt flow rate (MFR) value from 3 to 30 g/10 min, comprising (percent by weight): A) 50-90% of one or more propylene copolymer(s) having a content of...
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7335703 |
Polyolefin graft copolymer prepared in the presence of coordination polymerization catalyst based on late transition metal complex and method for making the same
A novel polyolefin graft copolymer prepared by graft-copolymerizing an olefin monomer with a (meth)acryl macromonomer or an isobutylene macromonomer in the presence of a coordination polymerization...
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7309724 |
Thermosetting resin compositions containing maleimide and/or vinyl compounds
In accordance with the present invention, there are provided novel thermosetting resin compositions which do not require solvent to provide a system having suitable viscosity for convenient...
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7304111 |
Polypropylene containing copolymer composition and process for producing the same
A problem of the invention is to provide a propylene copolymer which is excellent in adhesion to crystalline propylene-based polymers and which is excellent in solubility and compatibility with...
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7294673 |
Method of modifying polymeric material and use thereof
A method of modifying a polymeric material whereby the polymeric material is modified to give a highly durable surface without decreasing its strength. Namely, a polymeric material is modified by...
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7256240 |
Process of making polymer blends
In a process for producing a polymer blend, at least one first monomer is polymerized in a first slurry phase reaction zone in the presence of a supported first catalyst to produce a thermoplastic...
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7256236 |
Maleated polypropylenes and processes for the preparation thereof
Disclosed are methods for advantageously producing maleated polypropylenes having a relatively high percentage of bound maleic anhydride, based on the total amount of maleic anhydride moieties...
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7226977 |
High melt flow rate thermoplastic polyolefins produced in-reactor
A thermoplastic polyolefin having a melt flow rate of 20 dg/min or higher at 230° C. is produced in reactor without visbreaking. By controlling ratio of the weight average molecular weight of the...
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7160950 |
Modified olefin copolymer
A modified olefin-based copolymer produced by graft-polymerizing an alkenyl aromatic hydrocarbon and/or an unsaturated carboxylic acid or derivative thereof to an olefin-based copolymer containing...
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7144979 |
Modifying the surface of polymer substrates by graft polymerization
The present invention relates generally to a grafting process comprising the formation of a grafted polymeric structure having a substrate polymer in hybrid formation with one or more of the same...
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7122604 |
Modified propylene polymer, composition containing the same and use thereof
This invention provides a graft modified polypropylene polymer which does not contain halogens, is excellent in certain properties such as solubility and can add good adhesiveness and coating...
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7078463 |
High oxygen transmission biaxially oriented polypropylene film
A biaxially oriented polyolefin multilayer film containing: (a) a core layer containing (i) greater than about 0% by weight to about 50% by weight of an isotactic polypropylene-containing impact...
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7019082 |
Polymers, supersoft elastomers and methods for preparing the same
Embodiments of the present invention include a material comprising a polymer having a modulus of elasticity less than 10 5 Pa and a material comprising a polymer having a modulus of elasticity of...
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6908967 |
High transparency and high flexibility elastoplastic polyolefin compositions
Highly transparent and flexible elastoplastic polyolefin compositions which contain A) 10-20 parts by weight of a propylene homopolymer or copolymer with ethylene and/or one or more CH 2 ═CHR...
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6887944 |
Modified polypropylene and process for producing same
A modified polypropylene which is a polypropylene having a value of racemic diad fraction [r] in a specific range and modified with a specific compound, e.g., (meth)acrylic acids, and their...
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6887943 |
Modified propylene polymer, composition containing the same and use thereof
This invention provides a graft modified polypropylene polymer which does not contain halogens, is excellent in certain properties such as solubility and can add good adhesiveness and coating...
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6861471 |
Coating composition for polyolefin resin and process for producing the same
The present invention provides a coating composition for polyolefin resins, comprising a resin obtained by graft-copolymerizing at least one member selected from the group consisting of an...
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6855771 |
Process for making block polymers or copolymers from isotactic polypropylene
A process for manufacturing block polymer or copolymer from isotactic polypropylene. Polyolefins are introduced into an extruder. Free radical generator is mixed with the polyolefins to form a...
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6800688 |
Modified polyolefin resin, modified polyolefin resin composition, and uses thereof
A resin which has excellent adhesion to nonpolar substrates, is nontacky, and has satisfactory solubility in aromatic or nonaromatic solvents and satisfactory compatibility with other resins. The...
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6797784 |
Thermoplastic resins with a low proportion of coarse particles
The invention relates to homopolymers and/or copolymers containing <100 ppm coarse particles with a particle diameter of between 200 and 500 μm, to thermoplastic moulding materials containing...
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6569950 |
Process for producing acid modified polypropylene resin
There is provided a process for producing an acid modified polypropylene resin, which comprises the step of kneading: (1) 100 parts by weight of a polypropylene resin (A), (2) 0.1 to 20 parts by...
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6562914 |
Process for making propylene homo or copolymers
A process for homo or copolymerizing propylene, wherein propylene is polymerized in the presence of a catalyst at an elevated temperature in a reaction medium in which a major part of the reaction...
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6545088 |
Metallocene-catalyzed process for the manufacture of EP and EPDM polymers
Ethylene, an α-olefin and, optionally, a diene monomer are polymerized in a process comprising the step of contacting (1) ethylene, (2) at least one C 3 -C 20 aliphatic α-olefin, (3) optionally,...
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6506847 |
Controlling the molecular weight of graft copolymers using polymerizable chain transfer agents
The molecular weight of a graft copolymer is reduced by carrying out the following steps in a non-oxidizing atmosphere: (1) treating a propylene polymer material with an organic compound that is a...
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6495629 |
Modified polyolefin resin composition and uses thereof
A novel chlorine-free modified polyolefin resin composition with excellent adherence to nonpolar substrates, excellent solubility in solvents, excellent compatibility with other resins, and without...
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6469100 |
Propylene block copolymer and resin composition
A block copolymer is provided comprising one or more blocks of a propylene polymer (PP) and one or more blocks of an ethylene-propylene copolymer (EPR) having the properties: (1) the interface...
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6455643 |
Process for preparing propylene homopolymers and copolymers
Described herein is a process and an apparatus for preparing propylene homopolymers and copolymers, which comprises polymerizing propylene optionally with comonomers in the presence of a catalyst...
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6426389 |
Functionalized polypropylenes and process for production
A novel process for preparing functionalized polypropylenes entailing apportioned introduction of free radical initiator is described. Also described are novel functionalized polypropylenes having...
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6426388 |
Modified polyolefin composition and uses thereof
Disclosed is a novel chlorine-free modified polyolefin composition with excellent adherence to polyolefin substrates, with excellent solventresistance, oil resistance and weather resistance, with...
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6414102 |
Linear copolymers of alpha-olefins and divinylbenzene having narrow molecular weight and composition distributions, graft copolymers derived therefrom, and process for preparing same
The invention relates to polyolefin copolymers (I) and to graft copolymers (II) which are prepared from the copolymers (I), wherein the copolymers (I) are linear copolymers containing...
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6365682 |
Process for the production of propylene terpolymers
A process for producing terpolymers of propylene, comprising a) feeding into a slurry reactor a reaction mixture containing 50-85 w-% of propylene, 1-10 w-% of ethylene, 15-40 w-% of another C 4 -C...
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6355735 |
Semi-interpenetrating polymer network from epoxy monomer and olefin
A semi-interpenetrating polymer network including at least one epoxy monomer, at least one olefin monomer forming a co-monomer mixture with the epoxy monomer and a catalytic amount of at least one...
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6323286 |
Polypropylene composition
The composition of the present invention is not costly, excellent in an emboss transferring property, and is applicable for various skin materials and interior materials. The present invention...
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6319991 |
Propylene polymer blends, processes of producing the same and polypropylene resin compositions
A propylene polymer blend is disclosed which comprises (A) a propylene-α-olefin random copolymer with a propylene content of 90 to 99% by weight and (B) a propylene-α-olefin random copolymer with...
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6313228 |
Peroxidic treatment of olefin polymers
A process peroxidically treats olefin polymers with di-tert-butyl peroxide in an extruder. The olefin polymers together with di-tert-butyl peroxide under an inert gas are fed to an extruder. The...
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6313225 |
Catalyst for olefin (co-)polymerization and method for producing the same
Disclosed is a catalyst for olefin (co-)polymerization comprising a transition metal compound catalytic component which contains at least a titanium compound and an α-olefin (co-)polymer (A)...
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6303698 |
Propylene copolymer and process for the production thereof
Disclosed is propylene copolymers produced by the aid of a specific metallocene catalyst system, wherein a percentage of mis-insertion in the copolymer is highly controlled and the copolymers...
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6300434 |
Propylene-ethylene copolymers made from three different constituents
Propylene-ethylene copolymers obtainable by three-step polymerization from the gas phase in an agitated fixed bed by means of a Ziegler-Natta catalyst system which, in addition to a...
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6300420 |
Polypropylene composition with broad MWD
The invention relates to a copolymer composition prepared from copolymers of propene and α-olefin having 2 to 12 carbon atoms, having high molecular weight, a broad molecular weight distribution...
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6265493 |
Polyolefin graft copolymers derived from linear copolymers of alpha-olefins and divinylbenzene having narrow molecular weight and composition distributions and process for preparing same
The invention relates to a process for preparing polyolefin graft copolymers (II) ##STR1## from linear and well defined polyolefin copolymers (I) ##STR2## containing divinylbenzene comonomer units,...
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6254804 |
Oxygen scavengers with reduced oxidation products for use in plastic films
An oxygen scavenger composition, for use in or with plastics materials, includes a polymer or oligomer having at least one cyclohexene group or functionality. The composition produces only low...
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6225410 |
Ethylene/α-olefin copolymer and process for preparing the same
Ethylene/C 6 -8 alpha-olefin copolymers are characterized by melt tension, flow activation energy and haze. The copolymers have excellent moldability and produce films of excellent transparency and...
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6187868 |
Chlorinated polyvinyl chloride compound having excellent physical, chemical resistance and processing properties
The present invention relates to a chlorinated polyvinyl chloride compound and an article made therefrom. The compound comprises a two step CPVC resin, chlorinated polyethylene as well as an impact...
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6111027 |
Adhesives comprising copolymers of macromonomers and unsaturated acids or anhydrides
This invention relates to an adhesive composition comprising a copolymer comprising units derived from one or more macromonomers and an unsaturated acid or an unsaturated anhydride wherein the...
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6100224 |
Copolymers of ethylene α-olefin macromers and dicarboxylic monomers and derivatives thereof, useful as additives in lubricating oils and in fuels
A copolymer comprising units of an unsaturated dicarboxylic monomer and an ethylene α-olefin macromer is disclosed. The macromer is an unsaturated ethylene α-olefin polymer comprising units of...
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6084041 |
Process for making propylene homo or copolymers
A process for homo or copolymerizing propylene, wherein propylene is polymerized in the presence of a catalyst at an elevated temperature in a reaction medium in which a major part of the reaction...
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6077878 |
Foam made from modified polypropylene resin and process for the production thereof
The present invention relates to a foamed article comprising a modified polypropylene resin which is a graft copolymer of a polypropylene resin and an aromatic vinyl monomer and has an average...
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6051650 |
Rubber-reinforced thermoplastic resin composition containing particles of graft polymer
A rubber-reinforced thermoplastic resin composition is disclosed. The rubber-reinforced thermoplastic resin composition comprises a thermoplastic resin matrix having dispersed therein particles of...
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6028140 |
Process for the (co)polymerization of olefins
Homopolymers or copolymers obtained by a multistage process of olefins having the formula CH 2 CHR, in which R is hydrogen or R has from 1 to 10 carbon atoms and is an alkyl, cycloalkyl or aryl...
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6015862 |
Functionalized α-olefin/para-alkylstyrene terpolymers
Functionalized terpolymers of two different α-olefin and para-alkylstyrene are disclosed, wherein the functionalized terpolymers have a substantially homogeneous compositional distribution...
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