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7390862 |
Process for polymerizing 1-butene
A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH 2 ═CHT wherein T is a C 3 -C 10 alkyl group, in the presence of a...
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7345122 |
High stereospecific polybutylene polymer and highly active process for preparation thereof
Disclosed is a process for the preparation of a high stereospecific (isotactic) polybutylene polymer comprising the step of polymerizing a reactive monomer, 1-butene, which is used or is not used...
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7345017 |
Functional substances derived from oligoolefins having functional groups at the ends
An amphiphilic functional substance with lipophilicity, affinity for supercritical CO 2 , and if necessary hydrophilicity comprising an oligoolefin chain and a perfluoroalkyl group(s) at a single...
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7339019 |
Ethylene-α-olefin copolymer
A copolymer having monomer units derived from ethylene and monomer units derived from an α-olefin of 3 to 20 carbon atoms, a density of 906 to 970 kg/m 3 and an activation energy of flow of 50...
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7335716 |
Ethylene (co)polymers and uses thereof
An ethylene (co)polymer of the present invention is a (co)polymer with excellent moldability and mechanical properties and either an ethylene homopolymer or a copolymer of ethylene and an α-olefin...
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7335715 |
Ethylene-alpha-olefin copolymer
An ethylene-α-olefin copolymer having monomer units derived from ethylene and monomer units derived from an α-olefin of 3 to 20 carbon atoms, a density of 906 to 970 kg/m 3 , an activation energy...
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7312291 |
Concrete admixture additive
A new family of concrete admixture additives can be derived from reacting a mixture of olefins/cyclic olefins-maleic anhydride copolymers and methoxy polyethylene glycol amines and/or polyethylene...
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7312283 |
Polymerization catalysts and process for producing bimodal polymers in a single reactor
Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such...
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7309747 |
Highly flowable 1-butene polymer and process for producing the same
A 1-butene polymer satisfying the following (1), (2) and either (3) or (3′): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the...
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7304118 |
Polyethylene pipe having better melt processibility and high resistance to stress and method of preparing the same using metallocene catalyst
An ethylene-based copolymer for non-crosslinked water supply pipe is provided. The ethylene-based copolymer is prepared using a supported hybrid metallocene catalyst and has a dimodal or broad...
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7288598 |
Polyolefin masterbatch for preparing impact-resistant polyolefin articles
A masterbatch composition comprising (1) 10-50 wt % of a crystalline propylene homopolymer and (2) 50-90 wt % of a blend consisting of (a) a copolymer of ethylene and one or more C4-CIO...
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7282546 |
Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations
Polyolefins may be prepared using a cocatalyst conforming to the formula:
AIR z (X z ) n L z m
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7271221 |
Method of making interpolymers and products made therefrom
Olefin polymers having a melt strength of about 5cN at 190 ° C., and when made into a film have a CD shrink of at least 20%. Some of the polymers have a comb-like structure with at least 0.3...
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7265193 |
Polymerization process
This invention relates to a process to polymerize olefins comprising:
contacting: (i) propylene and (ii) a mixture comprising, optionally ethylene, and three or more different alpha olefins...
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7262247 |
Binder resin solution composition, coatings, inks, adhesives and primers
The present invention provides a binder resin solution composition, and a coating, ink, and adhesive containing the composition as an active ingredient, the binder resin solution composition having...
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7238765 |
High density polyethylene and insulation compositions for wire and cable
High density polyethylene having reduced melt elasticity and a reduced level of highly short-chain branched polymer molecules and wire and cable insulation compositions based thereon having...
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7230056 |
Catalyst preparation method
A two-step catalyst preparation method is disclosed. First, a support is combined with an indenoindolyl Group 3-10 metal complex and a first activator comprising an alkyl alumoxane to give a...
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7214755 |
Crystalline polymer of higher α-olefin and process for producing the same
A crystalline higher α-olefin polymer which is obtained from a C 10 or more α-olefin and satisfies either (1) the melting point (Tm) as measured with a differential scanning calorimeter (DSC) is...
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7208559 |
Ethylened polymer and molded object obtained therefrom
An ethylene-based polymer which is an ethylene/C4 to C10 α-olefin copolymer and satisfies the following requirements [k1] to [k3]: [k1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C....
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7183332 |
Process for the preparation of porous polymers and polymers obtainable thereof
A process for preparing porous olefin polymers comprising bringing into contact in a polymerization reactor, at a temperature T 1 , one or more olefins of the formula (I) CH 2 ═CHR 1 , R 1 being...
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7166683 |
Process for polymerizing 1-butene and 1-butene polymers
A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH 2 ═CHT wherein T is a C 3 –C 10 alkyl group, in the presence of a...
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7163993 |
Electrical devices from polymer resins prepared with ionic catalysts
This invention relates to olefin polymers particularly suited to satisfying the dielectric properties required in electrical device use. The olefin polymers can be prepared by contacting...
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7160964 |
Liquid phase process for the polymerization of α-olefins
A liquid-phase process for polymerizing α-olefins of the formula CH 2 ═CHR, where R is H or an alkyl radical C1–C6, to produce a polymer that is soluble in the reaction medium, comprising the...
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7157530 |
Catalyst system for controlled polymerization
Disclosed is a process for the removal and recycle of a supported transition metal catalyst complex from a polymerization reaction medium comprising the steps separating the supported transition...
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7157522 |
Alpha-olefin/propylene copolymers and their use
Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable...
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7138473 |
Small portable instrument
A miniature portable equipment in the present invention comprising a packing comprising a butyl rubber having a crosslinking structure composed of carbon to carbon bonds of the formula:
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7135531 |
Spherical catalyst for olefin polymerization
Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of an olefin containing a solid titanium catalyst component having a substantially...
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7132486 |
Linear low density polyethylenes with high melt strength and high melt index ratio
Linear low density polyethylenes (LLDPEs) that have relatively high melt index ratios (MIR) and relatively high melt strength (MS) are described. This combination of melt properties is achieved by...
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7129197 |
Synthesis of poly-alpha olefin and use thereof
One or more oligomers of an olefin are prepared in the presence of a single-site catalyst. Preferably, the olefin is an α-olefin, and the oligomers are a poly-alpha-olefin (PAO). The PAO so...
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7125946 |
Ethylene copolymer
The invention provides an ethylene-α-olefin copolymer which is superior in extrusion molding processability. The present invention is to provide a copolymer of ethylene and α-olefin of from 4 to...
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7125937 |
Polyorganosilsesquioxane supported metallocene catalysts
Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers such as the polymerization of propylene to...
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7122603 |
Alpha-Olefin/propylene copolymers and their use
Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable...
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7119153 |
Dual metallocene catalyst for producing film resins with good machine direction (MD) elmendorf tear strength
This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum...
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7105616 |
Separation of isobutene non-reacted during polymerization of isobutene
A process for working up a liquid reaction discharge of the cationic polymerization of isobutene, which substantially comprises polyisobutene, unconverted isobutene and, if required, an inert...
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7105609 |
Alpha-olefin/propylene copolymers and their use
Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable...
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7084218 |
Thermoplastic polymer blends of isotactic polypropylene and alpha-olefin/propylene copolymers
Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable...
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7081285 |
Polyethylene useful for blown films and blow molding
Blown films and blow molded objects may be prepared using a polyethylene composition comprising a unimodal metallocene catalyzed polyethylene copolymer. The polyethylene copolymer has high melt fow...
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7071137 |
Method of making a ziegler-natta catalyst
A method for making a Ziegler-Natta catalyst support includes the steps of contacting a fumed silica with a surface modifying agent such as a compound having the formula RMgX MgR′R″ wherein R,...
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7067604 |
1-butene polymer and molded product consisting of the polymer
1-butene based polymer satisfying following requirements (1″) to (4″) provides formed product having low stickiness, superior flexibility and transparency.
(1″) Crystalline resin having...
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7056993 |
Process for producing propylene alpha-olefin polymers
Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable...
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7056992 |
Propylene alpha-olefin polymers
Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable...
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7056985 |
End-capped polymer chains and products thereof
According to an aspect of the present invention, a method is provided in which a double diphenylethylene compound is reacted with a polymer that contains a carbocationically terminated chain...
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7053164 |
Thermoplastic polymer blends of isotactic polypropropylene and alpha-olefin/propylene copolymers
Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable...
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7049372 |
Propylene alpha-olefin polymer blends
Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable...
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7041765 |
Films comprising isotactic propylene copolymers
Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt%) propylene; and (B) at least 5 wt %...
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7037989 |
Copolymers of ethylene and/or α-olefins and vicinally disubstituted olefins
Substantially random ethylene and/or α-olefin copolymers containing units derived from vicinally disubstituted olefin monomers are described. The vicinally disubstituted olefin monomers may be...
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7037988 |
Process for the co-oligomerisation of ethylene and alpha olefins
A process for production of higher linear alpha olefins and/or alkyl-branched alpha olefins, which comprises the co-oligomerisation of one or more alpha olefins with ethylene in the presence of a...
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7034092 |
Process for producing bimodal polyethylene resins
A process for producing bimodal polyethylene resins in two reactors in series, the process comprising producing a first polyethylene resin fraction in a first slurry loop reactor in a diluent in...
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7026421 |
Random propylene copolymers
Random copolymers of propylene with other 1-alkenes having up to carbon atoms,
whose content of comonomers is in the range from 0.7 to 1.4% by weight if the only comonomer present in the...
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7026404 |
Articles made from blends made from propylene ethylene polymers
Articles made from polymer blend compositions of a first polymer component comprising an ethylene propylene copolymer and a second polymer component comprising an isotactic polypropylene copolymer....
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