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| Number | Title | Issue Date |
| 8076429 | Supertransparent high impact strength random block copolymer A high impact strength random block copolymer including (a) about 65-97 wt. % of a crystalline propylene/ethylene copolymer A containing from about 0.5 wt. % to about 6 wt. % derived from ethylene and from about 94 wt. % to about 99.5 wt. % derived from propylene, a... | 12/13/2011 |
| 7759438 | Polymerization process for preparing (co)polymers The present invention relates to an aqueous dispersion polymerization process for preparing a (co)polymer wherein an organic peroxide is used as initiator (as a source of free radicals) during the polymerization process in conjunction with an effective amount of an ... | 07/20/2010 |
| 7705096 | Manufacturing method of resin for developing agent In a manufacturing method of a resin for developing agent, a first polymerization agent is added in an aqueous medium; a radical polymerizable monomer is polymerized in the presence of a chain transfer agent to form a low molecular substance resin particle; after co... | 04/27/2010 |
| 7619045 | Water-soluble or water-dispersible acrylic dispersants obtained by controlled radical polymerization The present invention relates to a process for the preparation in aqueous solution of water-soluble acrylic polymers or for the preparation in aqueous dispersion of water-dispersible acrylic co-polymers, polymerised from, the total being 100 mol %: ... | 11/17/2009 |
| 7507781 | Anionic copolymers prepared in an inverse emulsion matrix A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaC... | 03/24/2009 |
| 7375148 | Method for producing aqueous styrene-butadiene-iv polymer dispersions A process for preparing an aqueous styrene-butadiene polymer dispersion by free-radical aqueous emulsion polymerization of a monomer mixture M comprising styrene, butadiene, and if desired up to 30% by weight, based on 100% by weight of monomers, of ethylenically un... | 05/20/2008 |
| 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 |
| 7314898 | Microsphere-filled polytetrafluoroethylene compositions The present invention is a composition that includes granular-grade polytetrafluoroethylene and a plurality of microspheres, where the plurality of microspheres have an average specific gravity less than about 0.9 grams per cubic centimeter. ... | 01/01/2008 |
| 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 consisting of acrylates and its derivatives, metharylates and its deri... | 12/04/2007 |
| 7291685 | Process for producing low polymer of α-olefin There is disclosed a process for producing an α-olefin oligomer by subjecting an α-olefin to oligomerization reaction in the presence of a catalyst and an organic solvent which comprises the step of spraying a solvent containing the organic solvent in the form of ... | 11/06/2007 |
| 7282549 | Fluorine-containing compounds, fluorine-containing polymerizable monomers, fluorine-containing polymers, dissolution inhibitors, and resist compositions The invention relates to a fluorine-containing compound containing a substituent represented by the formula 1: where R1 is (a) a straight-chain alkylene group, (b) a branched a... | 10/16/2007 |
| 7250448 | Anionic copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaC... | 07/31/2007 |
| 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 monomers selected from a group consisting of acrylates and its derivativ... | 07/24/2007 |
| 7232867 | Process for producing vinyl chloride polymer There is provided a process for producing a vinyl chloride-based polymer, in which a suspension polymerization of either vinyl chloride monomer, or a mixture of vinyl chloride monomer and another copolymerizable monomer, is conducted in a polymerization vessel fitte... | 06/19/2007 |
| 7226649 | Laser weldable flexible medical tubings, films and assemblies thereof The present invention provides a tubing assembly having a sidewall having a first layer. The first layer is fabricated from a first polymer blend comprising a first component of a material not thermally responsive to laser beam and selected from the group consisting... | 06/05/2007 |
| 7199201 | Synthetic polyisoprene rubber The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high cis-microstructure content and high stereo regularity. This polyisoprene rubbe... | 04/03/2007 |
| 7173095 | Polymerization process involving the dosing initiators The invention relates to a polymerization process wherein at least one peroxide, with a half life in between 1 hour and 0.001 hour at the polymerization temperature at the moment of dosing, is dosed to the reaction mixture at the polymerization temperature and where... | 02/06/2007 |
| 7135371 | Methods of fabricating semiconductor devices Methods of fabricating semiconductor devices are disclosed. One example method includes forming a gate oxide and a gate electrode on a semiconductor substrate; performing a first ion implantation process for the formation of an LDD (lightly doped drain) region in th... | 11/14/2006 |
| 7132485 | Dosing of peroxide to a suspension process wherein styrene is polymerized The invention relates to a suspension polymerization process for the preparation of styrene-containing (co)polymers, wherein the process comprises the steps of continuously or semi-continuously dosing an initiator to the reaction mixture, said initiator having a spe... | 11/07/2006 |
| 7122610 | Method of producing thermoplastic fluoropolymers using alkyl sulfonate surfactants Nonfluorinated surfactants selected from C7–C20 linear 1-alkanesulfonates, 2-alkanesulfones, and 1,2-alkanedisulfones are particularly effective for stabilizing emulsions in preparing non-elastomeric fluoropolymers containing at least 71 wt % vinylidene fluoride a... | 10/17/2006 |
| 7112637 | Process for producing vinyl chloride polymer There is provided a process for producing a vinyl chloride-based polymer, in which a suspension polymerization of either vinyl chloride monomer, or a mixture of vinyl chloride monomer and another copolymerizable monomer, is conducted in a polymerization vessel fitte... | 09/26/2006 |
| 7109275 | Co-metering of organic initiators and protective colloids during polymerization reactions The invention pertains to a process wherein initiators and protective colloids are both metered to a polymerization mixture. This manner of metering allows for improved control of the polymerization rate and an improved reactor space-time yield, and the process will... | 09/19/2006 |
| 7094849 | Bulk polymerization process for producing polydienes A method of producing cis-1,4-polydienes, the method comprising the step of contacting conjugated diene monomer with a lanthanide-based catalyst system in the presence of less than 20% by weight of organic solvent based on the total weight of monomer, organic solven... | 08/22/2006 |
| 7091150 | Synthetic polyisoprene rubber The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high cis-microstructure content and high stereo regularity. This polyisoprene rubbe... | 08/15/2006 |
| 6939927 | Process for making vinyl pyrrolidone/vinyl acetate copolymers having a very low residual vinyl pyrrolidone monomer level within a short production cycle Vinyl pyrrolidone/vinyl acetate copolymers having a very low residual vinyl pyrrolidone monomer level, i.e. | 09/06/2005 |
| 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 |
| 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 |
| 6765072 | PROCESS FOR THE PREPARATION OF AQUEOUS DISPERSIONS OF LATEX PARTICLES HAVING A HETEROGENEOUS MORPHOLOGY, THE LATEX PARTICLES OBTAINABLE WITH THE PROCESS, THE DISPERSIONS AND REDISPERSIBLE POWDERS, AS WELL AS THE USE THEREOF The invention relates to a process for the preparation of aqueous dispersions of latex particles having a heterogeneous morphology by a semicontinuous emulsion polymerization, comprising the emulsion polymerizing of ethylenically unsaturated (co)monomers, accompanie... | 07/20/2004 |
| 6756460 | Water-soluble copolymer and its production process and use The present invention provides: a novel water-soluble copolymer which is excellent in performance for uses, such as detergent builders, pigment dispersants, and scale inhibitors. In addition, the present invention provides: a novel liquid detergent builder which has... | 06/29/2004 |
| 6727328 | Controlled shear and turbulence flow pattern within a liquid in a vessel The present invention provides a process to create without mechanical agitation a zone of low shear, low turbulence flow pattern within a continuous phase liquid contained in a vessel by a continuous or periodic injection of an inert, immiscible, low density fluid, ... | 04/27/2004 |
| 6693151 | 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 emul... | 02/17/2004 |
| 6689851 | Rheology-modified polyolefins The subject invention is directed to a rheology-modified ethylene polymer having less than 0.5 weight percent gel, a composition distribution breadth index (CDBI) greater than 50 percent, and a molecular weight distribution (Mw /Mn) ... | 02/10/2004 |
| 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 means of free-radically initiated emulsion polymerization or ... | 08/12/2003 |
| 6596804 | Emulsion polymers An emulsion polymer and a method for preparing the emulsion polymer by the free radical polymerization of at least one first ethylenically unsaturated monomer to form a first emulsion polymer and the subsequent treatment of the first emulsion polymer with... | 07/22/2003 |
| 6528599 | Method for preparing living polymer in the presence of phosphazenium salt The present invention provides a method of preparing a polymer, which comprises subjecting a monomer containing at least a polar unsaturated compound to anionic polymerization in the presence of a phosphazenium compound represented by the formula (1): ... | 03/04/2003 |
| 6455219 | Semicontinuous emulsion polymerization process for making silica-containing latex for toners A process for making silica-containing latex particles involves polymerizing monomer in an emulsion comprising the monomer, water, silica particles, and optionally at least one surfactant, by adding at least one free radical initiator to the emulsion to f... | 09/24/2002 |
| 6447900 | Pressure-sensitive adhesive The present invention provides a pressure-sensitive adhesive having a storage modulus from 1×105 to 1×106 dyne/cm2 and at a frequency of 1 Hz; and having a gel fraction of 55% or more when the storage modulus is measured... | 09/10/2002 |
| 6444771 | Acrylic acid-maleic acid copolymer (or its salt), its production process and use, and production process for aqueous maleic salt solution with low impurity content The present invention provides: an acrylic acid-maleic acid copolymer (or its salt) which is excellent in performances, such as Mg2+ scavengeability, clay dispersibility in the presence of Mg2+, inhibitability upon Mg(OH)2... | 09/03/2002 |
| 6403703 | Polymeric compositions from acrylic and unsaturated carboxyl monomers An aqueous composition suitable for use, when dry, as an improved elastomeric coating, caulk, sealant, or pressure sensitive adhesive is provided including a predominantly acrylic aqueous emulsion polymer, the polymer having a glass transition temperature... | 06/11/2002 |
| 6384129 | Semi-batch emulsion process for making diene rubber latex, rubber latex made thereby, and graft copolymer made therefrom A semi-batch process is provided for making a diene rubber latex. The process involves (a) providing an amount of an initial liquid batch composition (containing water, emulsifier and diene monomer), sufficient to occupy from 50 to 80 volume percent of a ... | 05/07/2002 |
