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7589158 |
Polymers with improved shelf stability
The present invention relates to polymers polymerized sequentially or in stages and having varied functionality and/or monomer content as the polymerization progresses, as well as the methods for...
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7566761 |
Olefin polymer and process for preparing the same
The present invention provides an olefin polymer having a narrow molecular weight distribution and a specific molecular weight, an olefin polymer having a functional group introduced at the...
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7541412 |
Process for preparation of polyolefins via degenerative transfer polymerization
Disclosed is a method of producing a polyolefin composition comprising contacting a metallocene pre-catalyst with a substoichiometric amount of a co-catalyst; adding a first olefin monomer; and...
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7482412 |
Process for manufacturing cycloolefin addition polymer
A process for manufacturing a cycloolefin addition polymer includes polymerizing monomers containing a cycloolefin compound using a catalyst containing a nickel compound or a palladium compound by...
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7473334 |
Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers
A method of preparing a modified diallyl-N,N-disubstituted ammonium halide polymer and use of the polymer in combination with one or more high molecular weight, water soluble cationic, anionic,...
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7449532 |
Cycloolefin copolymer obtained by ring-opening polymerization, use thereof, and process for producing retardation plate comprising the copolymer
A cycloolefin copolymer obtained by ring opening polymerization according to the present invention is characterized by comprising a specific structural unit and exhibiting a single peak in a...
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7435784 |
Method of ethylene polymerization for producing products having various properties with high productivity and a tubular reactor used therefor
A method for continuous ethylene polymerization under high pressure using a polymerization reaction zone comprises a primary reaction zone and a secondary reaction zone wherein the secondary...
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7427651 |
Process for producing conjugated diene copolymer rubber
A process for producing a conjugated diene copolymer rubber which comprises initiating a copolymerization reaction in a reaction system containing a first conjugated diene compound and a first...
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7399810 |
Polymerization of monomers with differing reactivities
There is provided a process for producing a polymer comprising the steps of
(a) adding at least one low-reactivity monomer to a reaction vessel with a decreasing rate of addition, (b) adding...
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7348382 |
Polyvinyl alcohol based block copolymer and pigment dispersion aqueous liquid using the same and recording liquid
A recording liquid capable of giving a printed matter which is high in printing density, is suppressed in blur, has high printing quality, and has good fastness of a recorded matter including light...
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7303821 |
Material and process for precisely controlled polymeric coatings
This invention provides a chemically coated surface for the electrophoretic separation application. The surface comprises of block copolymers prepared from addition monomers selected from a group...
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7300988 |
Single catalyst low, medium and high density polyethylenes
A method of polymerizing olefins comprising combining in one embodiment ethylene and optionally one or more α-olefins with a catalyst composition in a continuous polymerization reactor at a...
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7285605 |
Batch process for synthesizing rubbery polymers having a high trans microstructure content
The present invention is directed to a batch process for synthesizing rubbery polymers, such as styrene-butadiene rubber, having a high trans microstructure. In one embodiment, the batch process...
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7285597 |
Radical polymerization processes for preparing halogenated polymers, and halogenated polymers
Radical polymerization process for the preparation of halogenated polymers employing one or more ethylenically unsaturated monomers, at least one of which is chosen from halogenated monomers,...
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7282547 |
Method for producing aqueous styrene-butadiene polymer dispersions
A process for preparing an aqueous styrene-butadiene polymer dispersion by free-radical aqueous emulsion polymerization of a monomer mixture M containing from 40 to 80% by weight of styrene as...
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7276565 |
Continuous miniemulsion polymerization process
A process including:
heating to a first polymerization temperature a first mixture including a free radical polymerizable monomer, a free radical initiator, and a stable free radical...
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7265159 |
Monodisperse anion exchangers
Process for preparing monodisperse weakly basic or optionally strongly basic anion exchangers of the poly(meth)acrylamide type, the ion exchangers themselves and their use.
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7247387 |
Material and process for controlled thin polymeric coatings on plastic surface
This invention provides a chemically coated surface for the plastics surface such as contact lens. The chemical surface coating comprises of at least one addition polymer prepared from addition...
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7220803 |
Process for obtaining aqueous polymer dispersions
The process comprises the following phases: formation of a pre-emulsion of monomers in water; transfer into the polymerisation reactor with stirring, of (1) reaction stock consisting of a water...
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7196143 |
High-softening-point copolymer, process for producing the same, and product of hydrogenation thereof
Provided are a high melting point copolymer prepared by heat-polymerizing cyclopentadiene and/or dicyclopentadiene and a vinyl-substituted aromatic compound, wherein a use amount of a solvent in...
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7173083 |
Polymer composition comprising a polymer having a gradient polymeric morphology
An aqueous composition comprising components: (A) 50 to 99 wt. % of a vinyl polymer(s) having a gradient polymeric morphology; and (B) 1 to 50 wt. % of at least one polymer not having a gradient...
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7101927 |
Latex obtainable by a gradient regime reaction
A latex having a reduced amount of 4-phenylcyclohexene is obtainable by reacting A) 30–90% by weight of at least one ethylenically unsaturated monomer; B) 70–10% by weight of a diene; C)...
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7078473 |
Radical polymerization methods and halogenated polymers
Radical polymerization process for the preparation of halogenated polymers and block copolymers. Halogenated polymers and block copolymers.
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7078467 |
Single catalyst low, medium and high density polyethylenes
A method of polymerizing olefins comprising combining in one embodiment ethylene and optionally one or more α-olefins with a catalyst composition in a continuous polymerization reactor at a...
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7060762 |
Preparation of aqueous styrene-butadiene polymer dispersions
A process for preparing an aqueous styrene-butadiene polymer dispersion by free-radical aqueous emulsion polymerization of a monomer mixture M that comprises
styrene, butadiene, and if...
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7053163 |
Controlled comonomer distribution along a reactor for copolymer production
The tendency of copolymer fluff grains of propylene and ethylene to agglomerate is reduced by injecting at least one olefin comonomer, such as ethylene monomer, into more than one point along the...
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7053157 |
Method for production of multimodal polyolefins of tunable composition, molecular weight, and polydispersity
The present invention relates to a method of producing multimodal polyolefins using at least one or more activated metallocene catalysts. The activated metallocene catalysts are used in combination...
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7049355 |
Low-odor, cold-curing (METH) acrylate reaction resin for floor coating, a floor coating containing the reaction resin, and a process for the preparation of the floor coating
The present invention relates to a low-odor, polymerizable, cold-curing (meth)acrylate composition for floor coatings exhibiting low health hazards during application and consisting of (A) 50–100...
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7041750 |
Process and apparatus for making supported catalyst systems for olefin polymerization
A process to support a homogeneous catalyst on a porous solid support is performed in two separate zones. In the first zone the solid is contacted, under stirring, with an amount of a catalyst...
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7022794 |
Process for producing olefin/aromatic vinyl copolymer
An olefin/aromatic vinyl compound copolymer which is excellent in transparency and which satisfies flexibility and heat resistance simultaneously can be produced by carrying out polymerization in...
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6946528 |
Hot melt adhesives
The invention provides a hot melt adhesive composition including a tubular reactor copolymer of ethylene and 5 to 20 mol % of comonomer units derived from an alkyl acrylate or alkyl methacrylate,...
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6924317 |
Process for producing coarse-particle anion-exchanger gels
The present invention relates to a process for producing monodisperse anion-exchanger gels with high stability, purity and coarse particle size greater than 800 μm starting from a monodisperse...
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6828393 |
Rate matched copolymerization
This invention relates to a method for controlling copolymer architecture by a two-part process. In the first step, a monomer analysis is obtained from a test polymerization having constant rate...
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6825291 |
Thermally polymerized copolymers made from styrene and dicyclopentadiene monomers
A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 5% to 25% by weight styrene or aliphatic or aromatic substituted styrene, and (b) about...
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6818710 |
Process for producing modified polymer rubber
There is provided a process for producing a modified polymer rubber, which comprises the steps of: (1) reacting one part by mol of an organoalkali metal compound with n±0.7 (n is an integer of 3...
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6767974 |
Process forming particles with functional groups
A process including: heating to a first polymerization temperature a first mixture composed of a first free radical polymerizable monomer, a first free radical initiator, and a first stable free...
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6765073 |
Process for preparing vinyl chloride paste resin
A process for preparing a vinyl chloride paste resin comprising the steps of homogenizing a vinyl chloride monomer in an aqueous medium together with an oil-soluble polymerization initiator to form...
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6759490 |
Method for producing aqueous polymer dispersions
The invention provides a process for preparing an aqueous polymer dispersion of a copolymer CP of at least two different monomers M1 and M2 by free-radical aqueous emulsion polymerization of the...
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6756454 |
Process for reducing the odor of vinylaromatic-1,3-diene copolymer dispersions stabilized by protective colloids
The invention relates to a method for reducing odor emissions of aqueous aromatic vinyl-1,3-diene-copolymer dispersions which have been stabilized with a protective colloid. The invention also...
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6716934 |
Method for producing ethylene-vinyl acetate copolymer, saponified product of copolymer prepared by the method, and molded product containing the same
The present invention provides a method for producing an ethylene-vinyl acetate copolymer (EVA) containing 5 mol % to 60 mol % of ethylene, by copolymerizing ethylene and vinyl acetate with a...
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6710113 |
Process for preparing two-phase polymers in the form of their aqueous dispersions and water-redispersible powders
A process for preparing two-phase polymers based on vinyl ester and ethylene in the form of their aqueous polymer dispersions or water-redispersible polymer powders by means of free-radical...
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6706805 |
Use of copolymers of vinyl ester, (meth)acrylic ester and optionally ethylene comonomers in building materials
Building materials containing copolymers derived from vinyl ester, (meth)acrylic ester and optionally ethylene comonomers, stabilized with a polyvinylalcohol protective colloid, as their aqueous...
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6686430 |
Alicyclic hydrocarbon copolymer
A novel alicyclic hydrocarbon copolymer having a weight average molecular weight (Mw) of 1,000-1,000,000 a comprising repeating units (a) having an alicyclic structure and repeating units (b)...
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6673861 |
INVERSE LATICES SELF-INVERTIBLE WITH RESPECT TO WHITE MINERAL OILS, SQUALANE, HYDROGENATED POLYISOBUTENE, ISOHEXADECANE OR ISODODECANE AND COSMETIC, DEMOCOSMETIC, DERMOPHARMACEUTICAL OR PHARMACEUTICAL COMPOSITIONS COMPRISING THEM
Composition comprising an oil phase, an aqueous phase, at least one emulsifying agent of water-in-oil (W/O) type and at least one emulsifying agent of oil-in-water (O/W) type in the form of a...
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6649708 |
Process for producing polymer particles
To provide a process for producing polymer particles which are spherical and have smooth surfaces and small contents of oil- and the solvent-soluble at the time of being compounded. Polymer...
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6646077 |
Peroxide curable fluoroelastomers
Peroxide curable fluoroelastomers having copolymerized units of vinylidene fluoride or tetrafluoroethylene major monomer, at least one other fluorinated major monomer, a cure site monomer having...
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6620894 |
Start-up procedure for multiple catalyst polymerization systems
This invention relates to a method to start up an olefin polymerization process comprising: a. calculating a trajectory, from elements including catalyst deactivation rate constants (k d ), for...
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6605662 |
Multistage aqueous dispersion of polymer particles having a soft core and hard shell
A process for preparing aqueous polymer dispersions comprises first of all subjecting ethylenically unsaturated monomers to free-radical aqueous emulsion polymerization to prepare an aqueous...
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6562929 |
Conjugated diene-based rubber and method of producing the same, oil extended rubber and rubber composition containing the same
An objective of the invention is to provide a conjugated diene-based rubber having a specific composition and a method of producing the same, an oil extended rubber using the same, as well as a...
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6559217 |
Preparation of polymer particles
The invention provides a process for the preparation of polymer particles having a mode particle size of at least 50 μm which process comprises (a) obtaining a first particulate polymer seed...
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