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7592123 |
Resin for photoresist composition, photoresist composition and method for forming resist pattern
A resin for photoresist compositions is disclosed with excellent resolution and line edge roughness characteristics. A photoresist composition and a method for forming a resist pattern using such a...
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7396887 |
Insitu removal of chelator from anionic polymerization reactions
A process for producing polymers having at least one high vinyl end segment is provided. The process comprises: (a) forming a living prepolymer high vinyl initiator with a vinyl content greater...
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7335709 |
Polymerizate composition and a method for producing the same
The invention relates to water-soluble, preferably powder-form polymer compositions which are obtained by continuous polymerization of at least one unsaturated monomer. At least one parameter that...
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7317056 |
Synthetic resin emulsion, easily water-swellable pressure-sensitive adhesive compositions containing the same and process for production of the emulsion
There is provided a synthetic resin emulsion comprising polymer particles having a core/shell structure, wherein the shell comprises a copolymer of an unsaturated carboxylic acid and a hydrophilic...
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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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7247671 |
Aqueous crosslinkable coating compositions based on vinyl fluoropolymer
Aqueous crosslinkable coating composition suitable for anti-graffiti and heavy duty applications comprising: (A) an aqueous polymer emulsion comprising at least one vinyl fluoropolymer which...
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7205362 |
Method for controlled radical polymerization
The present invention relates to a process for controlled radical polymerization using an organosulfur reversible chain transfer agent which consists in preparing polymers having a molar weight of...
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7135544 |
Living olefin polymerization processes
Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two...
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7105602 |
Processing aid for thermoplastic resin and thermoplastic resin composition containing the same
The present invention provides a processing aid for thermoplastic resin having a weight average molecular weight of 10,000 to 300,000, which is obtained by polymerizing an alkyl (meth)acrylate, or...
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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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7078441 |
Organic porous material, process for manufacturing the same, and organic porous ion exchanger
An organic porous material having a continuous pore structure, which comprises interconnected macropores and mesopores with a radius of 0.01 to 100 μm in the walls of the macropores, having a...
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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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7045581 |
Method for carrying out polymerization reactions
A method for carrying out homogenous polymerization reactions in a reactor, wherein monomers and/or prepolymers are fed (apportioned). In a first step, an initiator is optionally admixed with the...
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7034085 |
Method for polymerizing ethylenically unsaturated monomers by degenerative iodine transfer
The invention pertains to a method for making a block or gradient final (co)polymer comprising a step of radically polymerizing a mixture of ethylenically unsaturated monomers in the presence of a)...
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7001960 |
Process for producing vinyl chloride-based polymer
A process for producing a vinyl chloride-based polymer by suspension polymerization is provided. The polymerization is initiated in the presence of (A) a particular hydroxypropylmethylcellulose,...
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6995216 |
Process for manufacturing single-site polyolefins
A dual olefin polymerization process is disclosed. The process uses a bridged indenoindolyl ligand-containing Group 4 transition metal complex and an activator. It is carried out in multiple stages...
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6992153 |
Multi-stage process for the (CO) polymerization of olefins
Multi-stage process for the polymerization of olefins CH 2 ═CHR, where R is hydrogen or a C 1 –C 10 alkyl, cycloalkyl or aryl radical, comprising: (I) a first polymerization stage carried out...
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6964753 |
Polymerization reactor and process
A continuous static polymerization reactor unit for the production of liquid polymers, in particular high viscosity organopolysiloxanes, in a predetermined viscosity range comprises a reactor ( 1 )...
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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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6921797 |
Method of reducing metal content in fluorine-containing elastomer
To provide a method of reducing contents of metal components of a fluorine-containing elastomer through preparation thereof and a molded article obtained from the fluorine-containing elastomer...
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6906151 |
Semi-continuous bimodal emulsion polymerization
An aqueous semi-continuous emulsion polymerization process for producing bimodal polymer particles in volumes large than a single batch size is provided. A bimodal polymer composition prepared by...
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6872789 |
Cross-linkable polymer composition
The invention pertains to a polymer obtainable from the steps:
polymerizing a mixture, that is substantially free or organic solvents, of ethylenically unsaturated monomers which consist for...
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6835767 |
Polymer dispersions containing starch
A polymer dispersion is prepared by copolymerization of from 20 to 70 parts by weight of a monomer mixture comprising a) from 2.5 to 100% by weight of one or more (meth)acrylates of monohydric,...
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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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6825290 |
Process for the preparation of latices using block copolymers as surfactants
A subject-matter of the present invention is a process for the preparation of a latex by radical aqueous emulsion polymerization in the presence of at least one ethylenically unsaturated monomer,...
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6822060 |
Process for producing a tetrafluoroethylene polymer excellent in strength
A process for producing a tetrafluoroethylene polymer, which comprises polymerizing tetrafluoroethylene in an aqueous medium in the presence of a dispersant, a stabilizer and a polymerization...
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6818684 |
Methods and compositions involving polar monomers and multivalent cations
The present invention is directed, in part, to improved polymer compositions and processes for preparing same. Specifically, in one embodiment, there is provided a process for preparing a polymer,...
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6815513 |
Process for preparing comb-branched polymers
A continuous process for making a comb-branched copolymer of an acrylic monomer and a polyether macromonomer is disclosed. The process is performed by continuously feeding a reaction zone with a...
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6777507 |
Catalytically accelerated gas phase reactions
This invention relates to a process for carrying out an anionically or cationically catalytically accelerated gas phase reaction and particularly relates to a process for carrying out a...
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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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6753388 |
Structurally-modified polymer flocculants
This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to...
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6727327 |
Aqueous n-butyl acrylate copolymer dispersions for use as laminating adhesives
The present invention provides aqueous polymer dispersions comprising at least one particulate polymer P having a glass transition temperature T g of less than 0° C. which is composed of...
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6712991 |
Method of making a copolymer useful as viscosity index improving additive for hydraulic fluid
A method for making a viscosity index improving copolymer includes heating a reaction mixture including from about 55 weight percent to about 99.5 weight percent of a first monomer selected from...
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6683145 |
Hydrophobic lattices and coating compositions containing them
A coating composition containing an emulsion polymer prepared with up to about 20% by weight, based on total polymerizable monomers, of addition polymerizable esters of the glycidyl esters of...
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6667374 |
Polymer flocculants with improved dewatering characteristics
A high molecular weight water soluble acrylamide based polymer having improved flocculating and dewatering properties is provided. The polymer is prepared by a process in which a small quantity of...
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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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6610806 |
Living olefin polymerization processes
Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two...
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6605663 |
Process for preparing polyvinyl alcohol-stabilized polymers
A process is for preparing polyvinyl alcohol-stabilized addition polymers based on (meth)acrylate monomers in the form of their aqueous dispersions and water-redispersible dispersion powders by...
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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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6555630 |
Catalytically accelerated gaseous phase reactions
This invention relates to a process for carrying out an anionically or cationically catalytically accelerated gas phase reaction and particularly relates to a process for carrying out a...
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6509429 |
Process for preparing fluorine-containing polymer
A process for preparing a fluorine-containing polymer through emulsion polymerization method which enhances productivity while maintaining excellent physical properties of the fluorine-containing...
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6492469 |
Increased throughput in the manufacture of anionic polymers by reduction in polymers by reduction in polymer cement viscosity through the addition of metal alkyls
The present invention is an improvement upon the known method of anionically polymerizing monomers by contacting the monomers with an anionic polymerization initiator which is an organo-substituted...
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6469111 |
Method for polymerizing α-olefins in a gaseous phase
α-Olefins are polymerized in the gas phase at from 30 to 150° C. and a pressure of from 5 to 80 bar using a catalyst or a catalyst mixture containing as antistatic agent from 0.1 to 5% by weight...
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6423769 |
Acid functional two-stage polymer dispersion with neutralization between polymerization stages
An aqueous polymer dispersion wherein the polymer particles include at least two different water-insoluble polymers P and P′, obtained by free-radical polymerization of ethylenically unsaturated...
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6417297 |
Process for reducing the odor emission of aqueous vinylaromatic/1,3-diene copolymer dispersions
A process for reducing the odor emission of aqueous vinylaromatic/1,3-diene copolymer dispersions and of redispersion powders obtainable therefrom by drying, is by emulsion polymerization of a...
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6403730 |
Fluidized bed polymerization
Fluidized bed reactor process for the polymerization of one or more olefin monomers, wherein the reactor comprises a reaction zone which is confined at the underside by a gas distribution plate and...
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6395827 |
Aqueous crosslinkable coating compositions
An aqueous crosslinkable coating composition suitable for the provision of thick coatings without incurring carbon dioxide bubble formation comprising: (A) an aqueous dispersion of at least one...
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6391997 |
Method for producing diene-based rubber polymer latex
A process for production of diene rubber polymers wherein, during production of a diene rubber polymer by emulsion polymerization, the polymerization is initiated using a portion of the starting...
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6372868 |
Start up methods for multiple catalyst systems
This invention relates to a method to introduce multiple catalysts into a gas or slurry phase reactor comprising: (a) introducing one or more olefins and a first catalyst and an activator into the...
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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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