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| Number | Title | Issue Date |
| 7897705 | Process for producing olefin polymer The purpose of the present invention is to provide a process for producing an olefin polymer, which can produce an olefin polymer having a higher molecular weight by lowering hydrogen concentration efficiently in polymerizing an olefin in the presence of hydrogen by... | 03/01/2011 |
| 7737231 | Process for producing water-absorbing resin A process for preparing a water-absorbent resin made from an α,β-unsaturated carboxylic acid as an essential monomer characterized in that the process comprises allowing a metal chelating agent to be present at any step in the process in an amount of 0.001 to 6 pa... | 06/15/2010 |
| 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 than about 45% using a vinyl modifier, (b) adding a R1R2... | 07/08/2008 |
| 7351776 | Bulk polymerization process A method for the continuous production of polydienes, the method comprising the steps of (a) charging a mixture of one or more monomer, catalyst system, and less than 50% weight percent organic solvent based on the total weight of the monomer, catalyst and solvent, ... | 04/01/2008 |
| 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 influences the polymerization is varied according to a recurrent patt... | 02/26/2008 |
| 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 comonomer, the core comprises a copolymer of a monomer mixture compri... | 01/08/2008 |
| 7312268 | Water-absorbent carboxyl-containing polymers with low monomer content A water absorbent polymer with reduced residual monomer content is prepared using silver ions and/or colloidal silver. ... | 12/25/2007 |
| 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 pressure of less than 10,000 kPa; wherein the catalyst composition comprise... | 11/27/2007 |
| 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 comprises as a polymerized constituent monomer thereof (i) a fluoromonomer(... | 07/24/2007 |
| 7238756 | Polymerization process and control of polymer composition properties Methods of controlling the flow index and/or molecular weight split of a polymer composition are disclosed. The method of producing a polymer composition in one embodiment comprises incorporating a high molecular weight polymer into a low molecular weight polymer to... | 07/03/2007 |
| 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 greater than 100 000 g/mol, with a polydispersity index of less than ... | 04/17/2007 |
| 7183240 | Additives for inhibiting the formation of gas hydrates The present invention relates to an additive, and its use for inhibiting nucleation, growth and agglomeration of gas hydrates by adding an effective amount of an inhibitor to a multiphasic mixture which tends to hydrate formation and consists of water, gas and optio... | 02/27/2007 |
| 7171814 | Method and apparatus for carbon dioxide accelerated unit cooldown A system and a method of its use for the accelerated cooldown of at least one unit by injecting liquid carbon dioxide via a sparger into a pipeline connected to the unit via an access valve upstream of the unit being cooled. By providing an evenly distributed flow i... | 02/06/2007 |
| 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 group 15 atoms and a group 16 atom or three group 15 atoms. The ligan... | 11/14/2006 |
| 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 an alkyl (meth)acrylate and another vinyl monomer copolymerizable the... | 09/12/2006 |
| 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) 1–10% by weight of α,β-unsaturated carboxylic acids, carboxylic acid ni... | 09/05/2006 |
| 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 total pore volume of 1 to 50 ml/g and having pore distribution curve char... | 07/18/2006 |
| 7074862 | Emulsifier free aqueous emulsion polymerization process for making fluoropolymers Emulsifier free fluoropolymer manufacturing method in which (a) a chain transfer agent, or a mixture of chain transfer agents are used wherein the chain transfer agents do not yield more than 0.4 weight % relative to the monomer feed of water soluble fluorinated com... | 07/11/2006 |
| 7064170 | Emulsifier free aqueous emulsion polymerization to produce copolymers of a fluorinated olefin and hydrocarbon olefin Provided is a process for making a copolymer of fluorinated olefin and hydrocarbon olefin selected from ethylene, propylene and mixtures thereof, the process comprising a substantially emulsifier free aqueous emulsion polymerization of said fluorinated olefin and sa... | 06/20/2006 |
| 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 in a single-process method. The method allows for the production of ... | 05/30/2006 |
| 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 monomer and/or prepolymer. In a second step, once viscosity is substan... | 05/16/2006 |
| 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) a radical precursor and b) an iodine atom-containing intermediate po... | 04/25/2006 |
| 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, (B) a particular partially saponified PVA with a saponification degree ... | 02/21/2006 |
| 6998126 | Selection of poultry strains through extra-intestinal sporozoites A method for obtaining an immunogenic strain useful for producing a vaccine against Coccidiosis comprises the cycle of infecting at least one first group of specific pathogen-free donor birds with oocysts from an Eimeria species. Blood is then collected from ... | 02/14/2006 |
| 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 or in multiple reactors. The same complex and the same activator are... | 02/07/2006 |
| 6992153 | Multi-stage process for the (CO) polymerization of olefins Multi-stage process for the polymerization of olefins CH2═CHR, where R is hydrogen or a C1–C10 alkyl, cycloalkyl or aryl radical, comprising: (I) a first polymerization stage carried out in the presence of a catalyst comprising t... | 01/31/2006 |
| 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) a supply means (10,25) for supplying monomers and/or oli... | 11/15/2005 |
| 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 bead polymer with a swelling index of from 2.5 to 7.5 and more than one ... | 08/02/2005 |
| 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 having sufficiently reduced contents of metal components. The method of r... | 07/26/2005 |
| 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 the process of carrying out an aqueous semi-continuous emulsion polyme... | 06/14/2005 |
| 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 at least 70% of methacrylates, and which... | 03/29/2005 |
| 6861484 | Amphipathic polymer particles and methods of manufacturing the same The invention is directed to amphipathic polymeric particles that serve as both the dispersant and the binder in water based inks, ink compositions containing these particles, and methods for making the particles. The polymeric particles contain both hydrophilic and... | 03/01/2005 |
| 6841580 | 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 total pore volume of 1 to 50 ml/g and having pore distribution curve char... | 01/11/2005 |
| 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, saturated C3-C8... | 12/28/2004 |
| 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 co-monomer addition. In the second step a copolymer is polymerized usin... | 12/07/2004 |
| 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, of at least one radical polymerization initiator and of at least one s... | 11/30/2004 |
| 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 initiator, wherein the polymerization initiator is a redox polymerization ... | 11/23/2004 |
| 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, wherein the process comprises: providing a reaction mixture comprisin... | 11/16/2004 |
| 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 monomer stream that contains an acrylic acid and a polyether macromonom... | 11/09/2004 |
| 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 catalytically accelerated gas phase polymerization reaction. The process involve... | 08/17/2004 |
