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6492471 |
Method for producing bead polymers
A continuous process for the preparation of inorganic and organic bead polymers using a static micromixer is disclosed. The bead polymers obtainable by the process according to the invention have a...
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6486279 |
Acid activation of ruthenium metathesis catalysts and living ROMP metathesis polymerization in water
Activation of ruthenium based catalyst compounds with acid to improve reaction rates and yields of olefin metathesis reactions, including ROMP, RCM, ADMET and cross-methasis reactions is disclosed....
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6482910 |
Polynorbornenes with pendant cyclotriphosphazenes
A polymer composition comprising a polynorbonene backbone and pendant cyclotriphosphazene groups has been developed. The pendant cyclotriphosphazene group can have various substituents such as...
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6472490 |
Ethylene-aromatic vinyl compound copolymer and method for its production
The present invention provides an ethylene-aromatic vinyl compound copolymer having an aromatic vinyl compound content of from 1 to less than 55% by molar fraction, and otherwise defined in the...
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6465584 |
Elastomeric copolymer and process for the preparation thereof
The invention relates to an elastomeric copolymer derived from components comprising a) ethylene, b) an α-olefin, c) a non-conjugated polyene (C) having one C═C bond that is copolymerizable...
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6462159 |
Cationic deproteinized natural rubber latex, method of preparing the same, and treating agent used in the method
Disclosed are a cationic deproteinized natural rubber latex, in which rubber particles are positively charged and the concentration of said rubber particles is from 40 to 65% by weight and that the...
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6455649 |
Catalyst for producing living olefin polymer and process for producing the polymer
A catalyst comprising an organoaluminum compound and a vanadium chelate compound having the lability to cause olefins to undergo living coordination polymerization is contacted with a terminal...
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6437067 |
Porphyrin-nucleus introduced polymers
Provided are porphyrin-nucleus introduced polymers obtained by radical copolymerization of a radically polymerizable monomer with a porphyrin compound represented by formula (1) or (2): where R...
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6433083 |
Aromatic vinyl resin material and molded products thereof
The present invention provides resin materials for producing molded products endowed with excellent heat resistance, solvent resistance, toughness, tensile elongation, and transparency....
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6433109 |
Modified polypropylenes of improved processability
Modified polypropylenes of improved processability are produced by a continuous method by absorptively charging polypropylene particles at 20° to 120° C. with a gas mixture, which contains oxygen...
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6420506 |
α-olefin-based copolymer, process for the production thereof, and molded article comprising the same
An α-olefin-alkenyl aromatic hydrocarbon-diene copolymer, a process for producing the copolymer, which comprises copolymerizing an α-olefin, a mono-alkenyl aromatic hydrocarbon and a diene in the...
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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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6410649 |
Resin composition
A resin composition characterized by comprising from 5 to 95 wt % of an aromatic vinyl compound/olefin random copolymer (A) which has an aromatic vinyl compound content of from 1 to 99 mol % and...
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6403742 |
Olefin copolymer having functional group, production process thereof and rubber composition
An olefin copolymer having a functional group and having a structural unit (a) derived from ethylene, a structural unit (b) derived from an α-olefin having 3 to 12 carbon atoms, and a structural...
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6403737 |
Elastomeric copolymers of ethylene with α-olefins and process for their preparation
A process for the preparation of amorphous copolymers of ethylene with α-olefins and optionally minor amounts of polyenes are disclosed, which have the following characteristics: (A) the % by...
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6391990 |
Method of producing conjugated diene polymer
A conjugated diene polymer is produced by continuously polymerizing a conjugated diene monomer with a catalyst consisting essentially of components (1): a lanthanoid compound, (2): an aluminoxane...
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6384162 |
Process for production of olefin polymer with long chain branching
A process for production of an ethylene-propylene-diene-methylene (EPDM) tetrapolymer having long chain branching is described. The process comprises the step of polymerizing a monomer mixture...
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6376614 |
Ethylene copolymer and aromatic vinyl graft copolymer and method for producing the same
The present invention provides resin materials endowed with excellent heat resistance, solvent resistance, tensile elongation, toughness, and transparency. Specifically, there are provided an...
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6376630 |
Copolymer and process for producing the same
A copolymer of cyclopentadiene and/or dicyclopentadiene and a vinyl-substituted aromatic compound. The copolymer has a softening point of from 60 to 130° C., a vinyl-substituted aromatic compound...
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6369173 |
Process for preparing syndiotactic styrenic polymers by recycling the products
The present invention relates to a process of preparing syndiotactic styrenic polymers with a high conversion rate in the form of fine powder, which comprises (a) preparing styrenic polymers in a...
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6365683 |
Process for preparing monodisperse crosslinked bead polymers
The invention relates to a process for preparing substantially monodisperse crosslinked bead polymers useful as precursors for ion exchangers.
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6362297 |
Preparation of allylic copolymers of broad molecular weight distributions
A process for making an allylic copolymer is disclosed. The process is a free radical copolymerization of a mono-ethylenic monomer, a multi-ethylenic monomer, and a mono-allylic monomer. The...
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6353066 |
Method for producing copolymers in the presence of a chain transfer agent
The present invention provides a method of producing a copolymer. The method comprises placing a vinylbenzene, such as styrene, in a reactor, placing a cross-linking agent, such as divinylbenzene...
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6335391 |
Copolymer latex for adhesive for rubber/metal adhesion and process for producing same
A latex adhesive for rubber/metal adhesion, which contains a copolymer consisting of, based on the weight of the copolymer, (A) 90.0 to 97.0% by weight of 2,3-dichloro-1,3-butadiene units, (B) 1.5...
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6329478 |
Transition metal complex, process for producing the same, olefin polymerization catalyst containing the transition metal complex and process for producing olefin polymers
The present invention relates to a transition metal complex, a process for producing the same, a polymerization catalsyt containing the transition metal complex and a process for producing polymers...
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6316560 |
Method for producing cycloolefin polymers
The invention relates to a method for producing a cycloolefin copolymer by polymerization of 0.1-99.0 wt %, with respect to the total amount of monomers, of at least one polycyclic, 0-99.9 wt. %,...
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6310154 |
Solid acids as catalysts for the preparation of hydrocarbon resins
Solid acids are used as catalysts for the polymerization of a feed stream containing at least one of pure monomer, C5 monomers, and C9 monomers to produce hydrocarbon resins. Freely-associated...
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6306976 |
Rubbery polymer and method for producing the same
Disclosed is a rubbery polymer comprising a conjugated diene polymer, and bonded thereto, a lithium-detached residue of a lithium-containing organic polymer used as a catalyst in the production of...
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6306988 |
Methods for cross-metathesis of terminal olefins
A method for the cross-metathesis of terminal olefins is disclosed. The method describes making disubstituted internal olefin products by contacting a first terminal olefin with another first...
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6303727 |
Linear triene compound and copolymer
A novel and useful linear triene compound represented by the following formula (1) is co-polymerized with an α-olefin to obtain an ethylenically unsaturated copolymer which is superior in...
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6300449 |
Polymeric dicyclopentadiene/limonene resin
This invention relates to a novel class of polymeric resins which have a softening point ranging from about 50° C. to about 220° C. and a molecular weight ranging from about 500 to about 42,000....
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6300447 |
Ethylene-α-olefin-nonconjugated polyene random copolymer
An ethylene-α-olefin-nonconjugated polyene random copolymer obtained by polymerizing the following components (a), (b) and (c) in the presence of a catalyst comprising a transition metal complex...
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6300443 |
Process for preparing polymeric microgels
A process for preparation of a microgel comprising reacting an alkoxyamine with an unsaturated monomer composition comprising a cross-linking agent comprising at least two double bonds and...
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6300451 |
Long-chain branched polymers and their production
Copolymers, and processes to make them, are provided which are derived from monomers comprising: a) one mono-olefin having a single Ziegler-Natta polymerizable bond; b) a second monomer...
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6281309 |
Flourinated solid acids as catalysts for the preparation of hydrocarbon resins
Fluorinated solid acids and supported fluorinated solid acids are used as catalysts for the polymerization of a feed stream containing at least one of pure monomer, C5 monomers, and C9 monomers to...
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6281316 |
Enhanced crosslinking terpolymer
A polymer of the invention comprising the comonomers ethylene, one or more alpha-olefins having 3 to 20 carbon atoms, and one or more cyclic dienes having up to 30 carbon atoms, said polymer having...
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6274689 |
Random isomonoolefin/allyl styrene copolymers and functionalized derivatives thereof
The invention provides a copolymer of an isomonoolefin having from 4 to 7 carbon atoms and containing a copolymerized alkenyl styrene moiety represented by the formula I: ##STR1## where m=0-2,...
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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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6255412 |
Polymerization of a sticky polymer in the presence of a treated carbon black
There is provided a polymerization of a sticky polymer in the presence of a catalyst under polymerization conditions using carbon black as the inert particulate material, the improvement comprises...
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6235856 |
Polymerization of dicyclopentadiene
Composition of (a) dicyclopentadiene, by itself or in a mixture with a strained cycloolefin, and (b) a catalytic amount of at least one carbene-free, divalent-cationic ruthenium or osmium compound...
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6235853 |
Slurry polymerization process using an unsupported phosphinimine catalyst
A slurry polymerization process uses an unsupported catalyst component which is an organometallic complex having a phosphinimine ligand and a cyclopentadienyl-type ligand. The use of the...
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6225427 |
Olefin polymerization process employing metallocene catalyst provided by cocatalyst activation of a metallocene procatalyst
A polyolefin elastomer possessing a unique combination of properties, i.e., high molecular weight (M w ), high Mooney viscosity (ML 1 +4 at 125° C.), low polydispersity index (M w /M n ) and low...
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6214946 |
Inert particulate material passivation for single-site catalyst in EPDM production
There is provided a process for the gas phase production of an ethylene-propylene or ethylene-propylene-diene rubber in the presence of a single site or single-site like catalyst (e.g.,...
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6207773 |
Metallocene catalyst for preparing olefin polymer
A metallocene complex in which the cyclopentadienyl group is substituted with an alkanediyl silyl group. The yield of the metallocene complex is high, and it can be used as the catalyst for...
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6204358 |
Process for producing deproteinized natural rubber using protease and anionic surfactant
A deproteinized natural rubber substantially free from any protein and a process for producing the same which comprises treating a latex with a protease and a specific surfactant or a combination...
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6204337 |
Solid-phase synthesis of codeine from morphine
The specification describes a methylation resin comprising methyl(dialkyl)anilinium salts or methyl(diaryl)anilinium salts covalently bonded to the resin. The methylation resin is used in the...
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6184338 |
Anionic polymerization initiators containing tertiary amine functionality, their chain extended analogues, and processes for using the same
The present invention provides novel anionic polymerization amine initiators having a tertiary amine group pendant to the polymer chain and processes for making the same. The initiators can be...
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6143851 |
Process for preparation of addition products of difunctional telechelic polyolefins from cyclic olefins by olefin metathesis reaction
A process for the preparation of an addition product of a linear telechelic difunctional unsaturated polymer containing terminal functional reactive groups other than vinyl groups, involves...
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6140392 |
Printing inks
The present invention provides single fluid lithographic printing inks that include a continuous phase and a discontinuous polyol phase. The continuous phase includes an acid-functional vinyl...
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6140441 |
Ethylenic random copolymer, process for preparing the same, and rubber composition
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