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8106139 |
Propylene/alpha-olefin block interpolymers
Embodiments of the invention provide a class of mesophase separated propylene/α-olefin block interpolymers with controlled block sequences. The propylene/α-olefin interpolymers are characterized b...
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8044144 |
Resin composition, transparent film or sheet having elasticity recovering property, and wrap film
The present invention provides a propylene-ethylene copolymer which is excellent in a balance between a heat resistance and an elasticity recovering property and has a good transparency and which...
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8003223 |
Heat-sealable propylene-based polymer composition, heat-sealable film, and uses thereof
The present invention is directed to a heat-sealable propylene-based polymer composition comprising a propylene polymer composition including a propylene polymer component and propylene/ethylene...
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7935766 |
Propylene impact copolymer and method
Disclosed are propylene impact copolymer compositions, articles thereof, and processes for producing same. Polymerization with an improved catalyst composition provides a propylene impact copolymer...
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7893166 |
Ethylene/alpha-olefins block interpolymers
Embodiments of the invention provide a class of ethylene/α-olefin block interpolymers. The ethylene/α-olefin interpolymers are characterized by an average block index, ABI, which is greater than z...
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7875682 |
Propylene block copolymer and process for production thereof
Disclosed is a propylene block copolymer having excellent flexibility and impact resistance and showing a good polymer powder form. Also disclosed is a process for producing the copolymer. More...
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7868097 |
Hybrid polymer and method for production thereof
A hybrid polymer has a structure in which a polyolefin segment and a polar polymer segment are connected not via a bonding group containing a heteroatom. A method of the invention produces the...
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7858707 |
Catalytic olefin block copolymers via polymerizable shuttling agent
A polymerization process and the resulting polymer composition, said process comprising polymerizing one or more addition polymerizable monomers and a polymerizable shuttling agent in the presence...
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7858708 |
Propylene-ethylene-butene block copolymer and molded article thereof
A propylene-ethylene-butene block copolymer is provided which includes from 60 to 85% by weight of a polypropylene portion and from 15 to 40% by weight of a propylene-ethylene-butene random...
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7858706 |
Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation
A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process...
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7799866 |
Method for producing propylene-ethylene block copolymer
The method for producing a propylene-ethylene block copolymer in accordance with the present invention has: a first polymerization process which is performed using two or more polymerization tanks...
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7741407 |
Catalyst compositions comprising chain shuttling agents and the use thereof to produce golf ball compositions
The present invention is directed to golf balls having at least one layer which comprises a polymer produced by a process wherein one or more monomers are contacted with a composition comprising...
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7637526 |
Sliding coating for winter sports equipment
According to the invention, a sliding coating for winter sports equipment which is a blend of a copolymer (I) and a copolymer (II) is provided, the copolymer (I) being a propylene copolymer which...
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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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7309742 |
Impact copolymer with optimized melt flow, stiffness, and low-temperature impact resistance
An impact copolymer having a flexural modulus (ASTM D-790) of at least about 1,100 MPa; a melt flow rate (ASTM D-1238) of at least about 15 g/10 min; and a maximum load under Dynatup Impact test...
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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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7235606 |
Glass-filled propylene polymer composition
Disclosed is a glass-filled coupled impact propylene copolymer composition having an improved combination of strength, stiffness, impact properties and melt strength; articles made therefrom; and a...
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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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7196140 |
Highly flowable propylene block copolymers
The invention relates to highly flowable propylene block copolymers that comprise 50 to 80 wt.-% of a propylene homopolymer and 10 to 70 wt.-% of a propylene copolymer having 5 to 50 wt.-% of a...
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7067591 |
Block copolymers and process for their preparation
A block copolymer having structural formula A-B or A-B-A, wherein A is a crystallizable isotactic polypropylene block segment and B is an amorphous olefin elastomeric block segment; the novel...
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7022766 |
Olefin block copolymer, viscosity index improver for lubricating oils and lubricating oil composition
The present invention provides an olefin block copolymer for a viscosity index improver capable of preparing a lubricating oil composition having excellent low temperature properties and excellent...
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6965000 |
Acrylic-halogenated polyolefin copolymer adhesion promoters
The present invention is directed to a method for producing a copolymer and a copolymer product of the method. The copolymer is prepared by a controlled radical polymerization process, typically an...
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6916886 |
Propylene block copolymer
To provide a propylene based block copolymer that, when used as a molding material, exhibits an extremely good stiffness-impact resistance balance and has good heat resistance and excellent...
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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 CH2═CHR α...
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6906143 |
Propylene-ethylene block copolymer
Disclosed is a propylene-ethylene block copolymer which is superior in stiffness, hardness and moldability and also in balance between toughness and low-temperature impact resistance. The copolymer...
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6831124 |
Thermoplastic resin composition
This invention relates to a thermoplastic resin composition containing: (a) about 85 to about 95 weight % of a crystalline propylene ethylene block copolymer or a combination of crystalline...
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6815508 |
Propylene/ethylene block copolymer, blushing-resistant transparent polypropylene resin for molding, elastomer for molding, and molded article obtained from these
A polypropylene/ethylene block copolymer, which has a poly(ethylene-co-propylene) segment content of 5 to 100 wt. %, excluding 100 wt. %, and a total ethylene content of 2 to 95 wt. %. (a) The...
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6730744 |
Method for copolymerization and resulting copolymers
The invention concerns a method for preparing block copolymers comprising steps which consist in: polymerising a first monomer using an organolanthanide catalyst wherein said catalyst in the form...
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6646044 |
Continuous production method of propylene-based block copolymer
A stable continuous production of a propylene-based block copolymer can proceed for a long time without causing accumulation of particles having a small diameter by a process having the following...
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6630559 |
Propylene polymer, propylene block copolymer, process for preparing said polymer and said block copolymer, and propylene polymer composition
Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous...
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6613845 |
Propylene/ethylene-α-olefin block copolymer and process for producing the same
A propylene/ethylene-α-olefin block copolymer obtained by block-copolymerizing a polypropylene component with an ethylene-α-olefin random copolymer component, which satisfies conditions of the f...
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6596824 |
Method for producing polyolefin and gas phase polymerization apparatus
Provided is a continuous vapor-phase polymerization method for producing polyolefins. In the method, polymer agglomerates and aggregates are prevented from being formed, and polymer deposition on...
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6545099 |
Propylene polymer and block copolymer
Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous...
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6500535 |
Heat resistant, low dielectric polymers, and films, substrates, electronic parts and heat resistant resin molded parts using the same
The invention provides a heat-resistant, low-dielectric polymeric material that is preferably a copolymer in which a non-polar α-olefin base polymer segment and a vinyl aromatic copolymer segment ...
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6495634 |
Propylene polymers
Propylene polymers containing a matrix of a propylene homopolymer and a copolymer of propylene and other alkenes, wherein, during the separation of the propylene polymers according to tacticity and...
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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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6359081 |
Block copolymer with condensation or vinyl polymer, functions imparting, and lower cohesive E segments
A functional block copolymer useful as a compatibilizing agent for a blend of a condensation polymer and vinyl polymer comprises segments of a condensation polymer and a vinyl polymer derived from...
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6355736 |
Propylene block copolymer compositions
A propylene block copolymer composition is disclosed which comprises (A) a propylene-α-olefin random copolymer with a propylene content of 99.4 to 99.9 mol % and (B) a propylene-α-olefin random c...
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6329477 |
Method for increasing diene conversion in EPDM type polymerizations
This invention relates to a method of making polymer compositions, e.g. EPDM compositions, in a multistage reactor with monomers chosen from ethylene, C3 -C8 alpha olefins, and a non conjugated...
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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 a...
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6306973 |
Polypropylene block-copolymer resin and process for producing it
Polypropylene block-copolymer resin exhibiting high melt tension and improved moldability with balanced stiffness and impact resistance may be molded at high speed into large-sized articles,...
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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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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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6239242 |
Vinylaromatic and olefin pseudoblock polymers
There are a number of recent developments relating to co- and homo-polymers of vinyl aromatic monomers. There are syndiotactic polymers of styrene, there are pseudo random polymers of styrene and...
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6225414 |
Propylene block copolymer
A polypropylene block copolymer obtained by producing an ethylene-propylene copolymer moiety as a component A having an ethylene content of 1.5 to 6.0% by weight in an amount of 40 to 85% by weight...
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6211295 |
Polyolefin compositions and blown films obtained therefrom
Polyolefin compositions comprising:A) a heterogeneous polyolefin composition itself comprising a fraction (A1) which is insoluble in xylene at room temperature and a fraction (A2) which is soluble...
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6204422 |
Process for producing dialklylnaphthalenes
A rational technical process for producing dialkylnaphthalenes from petroleum-derived starting materials which exist in abundance is established. The process for producing dialkylnaphthalenes...
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6204336 |
High-rigidity ethylene/propylene block copolymer and process for the production thereof
A high rigidity ethylene-propylene block copolymer which is composed of (I) a crystalline polypropylene portion and (II) an ethylene-propylene random copolymer portion, and in which the crystalline...
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6197886 |
Compositions containing impact copolymers made from a blend of a homopolymer phase and a rubber phase having a high ethylene content
The present invention relates to compositions containing impact copolymer compositions that are a blend of a propylene polymer phase and a rubber phase in which the ethylene content of the rubber...
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