Material Contains Previously Formed Normally Solid Polymer Which Is Distinct From Polymer To Be Formed And Is A Polymer Formed From At Least One Ethylenic Monomer Patents (Class 526/201)
  • Patent number: 10414838
    Abstract: The present invention provides a method for preparing a vinyl chloride-based polymer comprising performing suspension polymerization of vinyl chloride-based monomer, wherein an aromatic hydrocarbon-based compound is added when a pressure change is 0.5 to 1.5 kg/cm2 with respect to an equilibrium pressure at a polymerization temperature in a polymerization reactor after the vinyl chloride-based monomer is added to the polymerization reactor, wherein the aromatic hydrocarbon-based compound comprises a reactive functional group having an intracarbon double bond and a hydroxyl group; and a vinyl chloride-based polymer prepared by the method and having a high polymerization degree and excellent fusion processability.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: September 17, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Joong Chul Lim, Hyun Kyou Ha, Yang Jun Jeon, Jin Hyuck Ju, Min Jeong Kang
  • Patent number: 9926232
    Abstract: Water-redispersible polymer powder compositions having cationic functionality are prepared by radically polymerizing one or more ethylenically unsaturated monomers in the presence of a protective colloid and/or emulsifier in an aqueous medium, and drying the resulting aqueous polymer dispersion after addition of a catonic protective colloid as a drying aid, the cationic protective colloid comprising a homopolymer or copolymer of one or more cationic monomers having a quaternary ammonium halide group, with 50 wt % to 100 wt % of the halide ions in the quaternary ammonium halide groups having been replaced by nonhalide anions, and with the fraction of halide ions being less than 1 wt %, based on the total weight of the polymer powder composition.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 27, 2018
    Assignee: WACKER CHEMIE AG
    Inventor: Jessica Seidel
  • Patent number: 9914858
    Abstract: Water resistant, acrylic emulsion pressure sensitive adhesive polymers containing particles having a mean “volume-average” particle diameter of greater than about 210 nm for use in label and tape application are provided. The emulsion polymers exhibit an increase in opacity of less than about 10%.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: March 13, 2018
    Assignee: Avery Dennison Corporation
    Inventors: Eric L. Bartholomew, Christopher L. Lester, Roger Maerki, Alfredo Mueller, Graham Yeadon
  • Patent number: 9752019
    Abstract: The present invention refers to developing and obtaining new composite materials based on rubbers and/or elastomers and/or their recycled can be reused through an in situ polymerization program between the combination of different monomers and/or oligomers type diisocyanate, esters, or organic peroxides cross-linking agent, which in their combination generate a binding agent capable of modifying the intrinsic chemical, thermal, rheological, and mechanical properties in the material and the chains chemical cross-linking originated by the incorporation of organic peroxides which are able to accelerate or decrease the reaction rate.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: September 5, 2017
    Assignees: Kautec Technologies, S.A.P.I De C.V., Centro de Investigacion en Materiales Avanzados, S.C
    Inventors: René Loya Enríquez, Grecia Andrea Bueno Herrera, Sergio Gabriel Flores Gallardo, Erasto Armando Zaragoza Contreras, Alejandro Vega Ríos, Mónica Elvira Mendoza Duarte, Erika Ivonne López Martínez
  • Patent number: 9394248
    Abstract: A process for the preparation of dihalodiphenylsulfones_such as 4,4?-dichlorodiphenyl sulfone or 4,4?-bis-(4-chlorophenylsulfonyl)biphenyl with high regioselectivity, at low temperature and in the absence of toxic reagents by reacting together at least one acid, at least one fluorinated anhydride and at least one halobenzene. The invented process is particularly suited for the manufacture of 4,4?-dichlorodiphenyl sulfone.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: July 19, 2016
    Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventor: Chantal Louis
  • Patent number: 9312569
    Abstract: An additive for lead-acid battery including sulfonated polyacrylic acid aimed at extending the battery life by preventing the sulfation of the negative electrode, and a lead-acid battery using the additive.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: April 12, 2016
    Inventors: Shunzo Mase, Akiya Kozawa
  • Patent number: 9127113
    Abstract: Disclosed herein is a block copolymer comprising a first block derived from a vinyl aromatic monomer; and a second block derived from an acrylate monomer; where a chi parameter that measures interactions between the first block and the second block is greater than or equal to about 0.05, when measured at 240° C. Disclosed herein too is a method comprising polymerizing a vinyl aromatic monomer to form a first block; and polymerizing a second block onto the first block to form a block copolymer; where the second block is derived by polymerizing an acrylate monomer; and where the block copolymer has a chi parameter of greater than or equal to about 0.05, when measured at 240° C.; where the chi parameter is a measure of interactions between the first block and the second block.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: September 8, 2015
    Assignees: ROHM AND HAAS ELECTRONIC MATERIALS LLC, DOW GLOBAL TECHNOLOGIES LLC, UNIVERSITY OF MINNESOTA
    Inventors: Phillip Dene Hustad, Peter Trefonas, III, Frank Steven Bates, Marc Andrew Hillmyer, Justin Glenn Kennemur
  • Patent number: 9120903
    Abstract: A ball milling free and roll milling free process that includes the mechanical mixing of a mixture of ingredients comprising a polymer, a perfluoropolyether phosphate, a conductive component, and a solvent.
    Type: Grant
    Filed: September 15, 2013
    Date of Patent: September 1, 2015
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kyle B. Tallman, Qi Ying Li, Lin Ma
  • Patent number: 9051407
    Abstract: Disclosed herein are polybutadiene grafted isoprene rubber, processes for preparing polybutadiene grafted isoprene rubber, mixed compositions and vulcanized forms thereof.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: June 9, 2015
    Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute Of Chemical Industry, China Petroleum & Chemical Corporation
    Inventors: Aimin Liang, Chuanqing Li, Wei Sun, Jie Zhang, Lin Xu, Ximing Xie, Guozhu Yu, Jiangwei Zhao, Yishuang Xin, Liangliang Yang, Jinmei Tan, Sufang Ouyang
  • Patent number: 9029454
    Abstract: An aqueous polymer composition is described comprising a homogeneous acrylic polymer dispersion produced by emulsion polymerization of a monomer mixture comprising: (A) from 85 to 99.9 wt % of one or more main monomers selected from C1-C12-alkyl esters of acrylic acid or C5-C12-alkyl esters of methacrylic acid, styrene, and vinyl toluene in such a ratio as to produce a polymer having a Tg in the range of ?20 to +65° C.; and (B) from 0.1 to 5 wt % of at least one stabilizing monomer selected from ethylenically unsaturated monocarboxylic acids or amides thereof, ethylenically unsaturated dicarboxylic acids or anhydrides or amides thereof, ethylenically unsaturated sulfonic acids, ethylenically unsaturated phosphoric acids, and ethylenically unsaturated phosphonic acids. The emulsion polymerization is conducted in the presence of 0.05 to 3 wt %, based on the total weight of monomers in the monomer mixture, of a chain transfer agent (C).
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: May 12, 2015
    Assignee: Celanese Emulsions GmbH
    Inventors: Christoph Deller, Argiri Tsami-Schulte, Stephan Krieger, Ulrich Desor, Marc Ratering
  • Patent number: 8969497
    Abstract: A method for producing a water-absorbent resin including the step of subjecting a water-soluble ethylenically unsaturated monomer to a reversed phase suspension polymerization in a petroleum hydrocarbon dispersion medium in the presence of a radical polymerization initiator and a dispersion stabilizer, wherein the method is characterized by the use of an ether-ester type nonionic surfactant as the dispersion stabilizer, and a water-absorbent resin obtained by the method, wherein the water-absorbent resin has a water-retention capacity of saline solution of 25 g/g or more, a water-absorption rate of saline solution of 50 seconds or less, and a flow index under moisture absorption of 70% or more. According to the method of the present invention, a water-absorbent resin having high water-retention capacity, excellent water-absorption rate, and further having excellent flowability under moisture absorption can be produced.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: March 3, 2015
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Masayoshi Handa, Junichi Takatori
  • Patent number: 8940831
    Abstract: The present invention provides a (meth)acrylic resin composition comprising a carboxylic acid group produced by heating a (meth)acrylic-based resin (C), wherein the (meth)acrylic-based resin (C) is obtained by polymerizing a monomer mixture (A) containing 80 to 99 wt % of a linear alkyl (meth)acrylate and 1 to 20 wt % of tertiary-butyl (meth)acrylate, in the presence of an acrylic acid ester-based crosslinked elastic particle (B) that is obtained by mixing and polymerizing 0.5 to 5 parts by weight of a polyfunctional monomer having at least two non-conjugated double bonds per molecule, with respect to 100 parts by weight of a monomer mixture containing 50 to 100 wt % of an alkyl acrylate monomer and 0 to 50 wt % of an alkyl methacrylate monomer. This composition can be used to produce a film having excellent chemical resistance (in particular, sun-screening agent resistance).
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: January 27, 2015
    Assignee: Kaneka Corporation
    Inventors: Hirofumi Inari, Katsuyuki Tanaka, Kimihide Nishimura
  • Publication number: 20150011693
    Abstract: The present invention concerns a method for the dispersed phase polymerisation of halogenated vinyl compounds, having the formula RbRcC?CX1X2, where: X1?F or CI, X2?H, F or CI, each of Rb and Rc, separately represents: —H, CI, F; or—an alkyl group, preferably chlorinated and/or fluorinated, and more advantageously perchlorinated or perfluorinated, comprising a step (E1) wherein said monomers are introduced into an aqueous phase together with—at least one source of free radicals; and—at least one reactive stabiliser comprising a polymer chain and a thiocarbonylthio-S group (C?S)—, said polymer chain comprising non-(N vinyl lactam) monomer units.
    Type: Application
    Filed: January 30, 2013
    Publication date: January 8, 2015
    Applicant: RHODIA OPERATIONS
    Inventors: Mathias Destarac, James Wilson
  • Patent number: 8907010
    Abstract: A non aqueous dispersion is disclosed containing: a shell polymer; a core polymer, and a continuous phase solvent, wherein said shell polymer is soluble and said core polymer is insoluble in the continuous solvent. Also disclosed is a method for improving the setting properties of a sheet fed offset ink by adding to the ink the above non aqueous dispersion.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: December 9, 2014
    Assignee: Sun Chemical Corporation
    Inventors: Ramasamy Krishnan, Mark Schneider, Jerome Bollard
  • Patent number: 8901227
    Abstract: A finely divided, cationic, aqueous polymer dispersion, obtained by (I) solution polymerizing a first mixture containing (a) 15-40% by weight of a mixture of (a1) a (meth)acrylate and (a2) a (meth)acrylamide, (b) 40-85% by weight of styrene, (c) 0.5-5% by weight of an ethylenically unsaturated monomer, and (d) 0-20% by weight of a nonionic, ethylenically unsaturated monomer differing from (b); (II) adding water; and (III) emulsion polymerizing a second monomer mixture containing (i) 0-29% by weight of styrene, (ii) 50-100% by weight of a C1- to C18-(meth)acrylate, (iii) 0-30% by weight of a vinyl ester of a C1-C30-carboxylic acid, and (iv) 0-30% by weight of a nonionic ethylenically unsaturated monomer differing from (i), (ii), and (iii), wherein at least one of the solution and emulsion polymerizing are performed in the presence of 0-10% by weight of a regulator.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: December 2, 2014
    Assignee: BASF SE
    Inventors: Anja Song, Holger Kern
  • Patent number: 8883944
    Abstract: A method for producing a water-absorbent resin by performing a reversed-phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum hydrocarbon dispersion medium, comprising the following steps of: (A) performing a primary dispersion in the absence of surfactants by adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a hydrophilic polymeric dispersion agent to a petroleum hydrocarbon dispersion medium in which a hydrophobic polymeric dispersion agent was heat-dispersed or heat-dissolved, under stirring; (B) further performing a secondary dispersion by adding a surfactant to a dispersion liquid obtained after the primary dispersion; and (C) performing the reversed-phase suspension polymerization by using a radical polymerization initiator; and the water-absorbent resin obtained by the method.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: November 11, 2014
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Atsushi Heguri, Sachi Kikuno, Hideki Yokoyama, Nobuhiro Maeda
  • Patent number: 8865796
    Abstract: Methods of synthesizing a binary polymer functionalized nanoparticle are generally provided. In one embodiment, a first anchoring compound is attached to a nanoparticle, and a first plurality of first monomers are polymerized on the first anchoring compound to form a first polymeric chain covalently bonded to the nanoparticle via the first anchoring compound. In another embodiment, a first polymeric chain can be attached to the nanoparticle, where the first polymeric chain has been polymerized prior to attachment to the nanoparticle. Thereafter, a second anchoring compound is attached to the nanoparticle, and a second plurality of second monomers are polymerized on the second anchoring compound to form a second polymeric chain covalently bonded to the nanoparticle via the second anchoring compound. Nanoparticles are also generally provided having multiple polymeric assemblies.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: October 21, 2014
    Assignee: University of South Carolina
    Inventors: Brian C. Benicewicz, Atri Rungta, Anand Viswanath, Linda S. Schadler Feist, Douglas Dukes
  • Publication number: 20140194574
    Abstract: A method for producing a water-absorbent resin including the step of subjecting a water-soluble ethylenically unsaturated monomer to a reversed phase suspension polymerization in a petroleum hydrocarbon dispersion medium in the presence of a radical polymerization initiator and a dispersion stabilizer, wherein the method is characterized by the use of an ether-ester type nonionic surfactant as the dispersion stabilizer, and a water-absorbent resin obtained by the method, wherein the water-absorbent resin has a water-retention capacity of saline solution of 25 g/g or more, a water-absorption rate of saline solution of 50 seconds or less, and a flow index under moisture absorption of 70% or more. According to the method of the present invention, a water-absorbent resin having high water-retention capacity, excellent water-absorption rate, and further having excellent flowability under moisture absorption can be produced.
    Type: Application
    Filed: August 23, 2012
    Publication date: July 10, 2014
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Masayoshi Handa, Junichi Takatori
  • Patent number: 8765889
    Abstract: The invention relates to a method for producing hybrid-particles containing polymer and SiO2-particles, wherein a) in a first polymerization step in aqueous medium a water-insoluble phase containing one or more monomeric and colloidal SiO2-particles having an average particle diameter of 1 to 150 nm are polymerized, and b) in a second polymerization step in aqueous medium one or more monomers are polymerized in the presence of the polymer obtained in the first polymerization step.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: July 1, 2014
    Assignee: Evonik Nanoresins GmbH
    Inventors: Werner Siol, Klaus Langerbeins, Uwe Dietrich Kühner
  • Patent number: 8765627
    Abstract: The present invention relates to a catalyst system, to a method of manufacturing this system, and also to uses of this system. The catalyst system of the invention is characterized in that it comprises molecules of a polymer having, at one of its ends or along the chain, one or more polar functional groups; a solvent, said solvent, due to the fact of said polar functional group of said polymer, provoking and maintaining, when said molecules of the polymer are introduced thereinto, an organization of said molecules of the polymer into aggregates, micelles or vesicles so that the polar functional groups of said polymer are located inside the aggregates, micelles or vesicles formed; and a catalyst activator and a catalyst trapped in said aggregates, micelles or vesicles of said polymer. The catalyst system of the present invention may be used, for example, for catalyzing a (co)polymerization of olefins.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: July 1, 2014
    Assignee: Centre National de la Recherche Scientifique—CNRS
    Inventors: Henri Cramail, Cécile Bouilhac, Eric Cloutet, Daniel Taton, Alain Deffieux
  • Patent number: 8735496
    Abstract: The present invention relates to a process for the production of the largest possible spherical, monodisperse polyvinylpyrrolidone (PVP) seed particles in the micron range by dispersion polymerisation. The particles obtained in this way represent novel starting materials for the production of macroporous polymer particles, which can in turn be employed in preparative and analytical chromatography for protein preparation. They can also be employed as base material for further reactions. The novel process for the polymerisation of N-vinylpyrrolidone, which is inexpensive to carry out, gives particles having optimised quantities, such as monodispersity, sphericity and particle diameter, which can be employed in further reactions and have advantageous, in particular improved, properties for use in chromatographic separation methods.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: May 27, 2014
    Assignee: Merck Patent GmbH
    Inventors: Matthias Joehnck, Daniel Scheid
  • Publication number: 20140127510
    Abstract: Disclosed is a water-absorbent resin particle in which the water-absorption rate of physiological saline is 1 second to 15 seconds, the median particle size is 100 ?m to 600 ?m, and the residual volatile component content is 1.5% by weight or less.
    Type: Application
    Filed: July 23, 2012
    Publication date: May 8, 2014
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Masayoshi Handa, Kenji Tanimura, Atsushi Heguri, Yuichi Onoda
  • Patent number: 8710134
    Abstract: The present invention provides a (meth)acrylic resin composition comprising a carboxylic acid group produced by heating a (meth)acrylic-based resin (C), wherein the (meth)acrylic-based resin (C) is obtained by polymerizing a monomer mixture (A) containing 80 to 99 wt % of a linear alkyl (meth)acrylate and 1 to 20 wt % of tertiary-butyl (meth)acrylate, in the presence of an acrylic acid ester-based crosslinked elastic particle (B) that is obtained by mixing and polymerizing 0.5 to 5 parts by weight of a polyfunctional monomer having at least two non-conjugated double bonds per molecule, with respect to 100 parts by weight of a monomer mixture containing 50 to 100 wt % of an alkyl acrylate monomer and 0 to 50 wt % of an alkyl methacrylate monomer. This composition can be used to produce a film having excellent chemical resistance (in particular, sun-screening agent resistance).
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: April 29, 2014
    Assignee: Kaneka Corporation
    Inventors: Hirofumi Inari, Katsuyuki Tanaka, Kimihide Nishimura
  • Patent number: 8664332
    Abstract: A process for making substantially uniform oligomeric droplets in an aqueous dispersion comprising preparing an aqueous emulsion of an emulsifying agent, at least one monomer, a chain transfer agent, and an initiator; and mixing the aqueous emulsion with a stabilizer and a plurality of seed particles.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: March 4, 2014
    Assignee: Rohm and Haas Company
    Inventors: Martin Deetz, John J. Maikner, William J. Zabrodski
  • Patent number: 8633285
    Abstract: A process for producing water-absorbing polymer particles, comprising the addition of a solid additive to a polymer gel by means of a conveying screw (1), wherein the solid additive and a gas volume flow are fed to the conveying screw (1) by means of an addition channel (2).
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: January 21, 2014
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Matthias Weismantel, Dominicus van Esbroeck, Filip Mees
  • Patent number: 8623463
    Abstract: A description is given of the use of a polymer dispersion for preparing sound deadener compositions, the polymer dispersion being obtainable by emulsion polymerization of free-radically polymerizable monomers in the presence of at least one protective colloid which is an amphiphilic graft copolymer. Preferred protective colloids have a polyalkylene oxide main chain and vinyl ester-comprising side chains. A description is also given of corresponding sound deadener compositions which comprise the polymer dispersion, and of a method for damping oscillations or vibrations of vehicle components.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: January 7, 2014
    Assignee: BASF SE
    Inventors: Gledison Fonseca, Dirk Wulff, Axel Weiss, Lidcay Herrera Taboada, Juergen Siroky
  • Patent number: 8536286
    Abstract: A composite catalyst useful in the production of polyethylene, which comprises at least a first catalyst and a second catalyst separated by a polymer layer, with the first catalyst and the second catalyst being identical or different, is described. A composite catalyst useful in the production of polyethylene with a broad molecular weight distribution in a single polymerization reactor, which comprises at least a first catalyst and a second catalyst separated by a polymer layer, with the first catalyst and the second catalyst being different, is also described. A process for preparing said catalysts and a process for the production of a polyethylene by using said catalysts are also described.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: September 17, 2013
    Assignees: China Petroleum & Chemical Corporation, Zhejiang University, Sinopec Engineering Incorporation
    Inventors: Wenqing Wu, Yongrong Yang, Jingdai Wang, Binbo Jiang, Guanghai Luo, Shufang Wang, Yi Wang, Xianfong Zhang, Guodong Han
  • Patent number: 8536288
    Abstract: An object of the invention is to provide a protein-adsorbing material having both adsorption capacity and high-speed treatment performance applicable to not only analysis use but also industrial use, in balance, and to provide a method for producing the same. The present invention provides a protein-adsorbing material comprising a polymer base-material, a polymer side-chain immobilized to the surface of the polymer base-material and a functional group having protein adsorption ability and immobilized to the polymer side-chain, in which the mass of the polymer side-chain is 5 to 30% relative to the mass of the polymer base-material.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: September 17, 2013
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Goro Furumoto, Noboru Kubota, Kyoichi Saito
  • Patent number: 8501855
    Abstract: A multi-stage aqueous emulsion polymer, an aqueous coating composition including the emulsion polymer, and a method for providing a coating including the emulsion polymer are provided. The multistage emulsion polymer includes from 10% to 30% by wt., based on the wt. of the multistage emulsion polymer, of a first polymer shell having an acid number of from 5 to 100, the first polymer having a calculated Mn of from 1000 to 4500 and a calculated Tg of lower then 100° C.; and from 70% to 90% by wt., based on the wt. of the multistage emulsion polymer, of a second polymer core having an acid number of from 0 to one-half the acid number of the first polymer, the second polymer having a calculated Mn of greater than 20,000.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: August 6, 2013
    Assignee: Rohm and Haas Company
    Inventors: Gary W. Dombrowski, William J. Rosano
  • Patent number: 8497315
    Abstract: The present invention pertains to a process for the preparation of aqueous dispersions which are stabilized with a water-insoluble stabilizing colloid, characterized in that a) in a first step a water-insoluble stabilizing colloid is prepared, with this being prepared, based on the amount of monomer used for the preparation of the stabilizing colloid, by means of radical polymerization, followed by b) the addition of at least one further olefinically unsaturated monomer and at least one initiator, in which process by means of radical polymerization of the further olefinically unsaturated monomer an aqueous dispersion is obtained, on which c) optionally a residual monomer reduction is performed, with this being carried out by means of polymerization of residual monomers and/or by means of physical removal of the residual monomers and optionally further volatile organic components by means of the introduction of vapor and/or gas.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: July 30, 2013
    Assignee: Akzo Nobel N.V.
    Inventors: Hongli Willimann, Jakob Wolfisberg, Ulf Kehrer
  • Patent number: 8476391
    Abstract: The invention relates to a method for producing anionic water-in-water polymer dispersions containing at least one finely dispersed, water-soluble and/or water-swellable polymer A and a continuous aqueous phase. This phase has a partial quantity of at least one polymeric dispersing agent B in which monomers dispersed in this aqueous phase are subjected to a radical polymerization, and after the polymerization is completed, the reaction mixture is subsequently diluted with the remaining amount of dispersing agent B. The invention also relates to the polymer dispersions obtained according to the method and to their use, particularly in the paper industry.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: July 2, 2013
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Susanne Bellmann, Norbert Steiner, Michael Busch, Dev Steuck, Johann Schulte, Wolfgang Woebel
  • Publication number: 20130123445
    Abstract: A method for producing a water-absorbent resin by performing a reversed-phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum hydrocarbon dispersion medium, comprising the following steps of: (A) performing a primary dispersion in the absence of surfactants by adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a hydrophilic polymeric dispersion agent to a petroleum hydrocarbon dispersion medium in which a hydrophobic polymeric dispersion agent was heat-dispersed or heat-dissolved, under stirring; (B) further performing a secondary dispersion by adding a surfactant to a dispersion liquid obtained after the primary dispersion; and (C) performing the reversed-phase suspension polymerization by using a radical polymerization initiator; and the water-absorbent resin obtained by the method.
    Type: Application
    Filed: July 20, 2011
    Publication date: May 16, 2013
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Atsushi Heguri, Sachi Kikuno, Hideki Yokoyama, Nobuhiro Maeda
  • Patent number: 8436053
    Abstract: A process for making an aqueous dispersion of fluorinated ionomer particles by providing dispersed particulate of fluorinated ionomer in an aqueous polymerization medium and polymerizing at least one fluorinated monomer having an ionic group in the aqueous polymerization medium in the presence of the dispersed particulate of fluorinated ionomer and initiator to form the aqueous dispersion of particles of fluorinated ionomer.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: May 7, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke
  • Patent number: 8436054
    Abstract: A process for making an aqueous dispersion of fluorinated ionomer particles by polymerizing in a first polymerization step at least one fluorinated monomer having an ionic group in an aqueous polymerization medium in the presence of initiator, the polymerizing providing dispersed particulate of fluorinated ionomer, polymerizing in a second polymerization step at least one fluorinated monomer having an ionic group in the aqueous polymerization medium in the presence of the dispersed particulate of fluorinated ionomer and initiator to form the aqueous dispersion of particles of fluorinated ionomer, and suspending the first polymerization step prior to beginning the second polymerization step.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: May 7, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Ralph Munson Aten, Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke
  • Patent number: 8288491
    Abstract: A process for producing high-quality polymer microparticles having uniform particle size of the order of several micrometers to tens of micrometers by inverse suspension polymerization at high productivity while keeping excellent dispersion stability without causing aggregation among particles. The inverse suspension polymerization involves a vinyl monomer and is performed in at least two steps. A water-soluble oxidizing agent and a water-soluble reducing agent are used as a polymerization initiator, and the water-soluble reducing agent is fed after the water-soluble oxidizing agent is fed.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: October 16, 2012
    Assignee: Toagosei Co. Ltd.
    Inventors: Akihiro Gotou, Hideo Matsuzaki, Tomotaka Mizuno
  • Patent number: 8193271
    Abstract: Process for preparing an aqueous polymer composition using water-soluble free radical chain regulators.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: June 5, 2012
    Assignee: BASF SE
    Inventors: Oihana Elizalde, Matthias Gerst
  • Publication number: 20120095176
    Abstract: The present invention relates to a process for the production of polyvinyl chloride (PVC) having a median grain size of from 10 to 80 ?m by suspension polymerization of vinyl chloride, the process comprising the following process steps: (a) introduction of water, initiator(s), optionally one or more further adjuvants, and some of the vinyl chloride into a container as initial charge and mixing of the constituents; (b) dispersion, and addition of one or more suspension auxiliaries with continued dispersion; (c) heating of the mixture; (d) addition of the remaining vinyl chloride; and (e) working-up of the product.
    Type: Application
    Filed: September 22, 2011
    Publication date: April 19, 2012
    Applicant: Vinnolit GmbH & Co. KG
    Inventors: Johann Hiermeier, Ulrich Lauter, Peter Voth
  • Patent number: 8153738
    Abstract: A process for making an aqueous dispersion of fluoropolymer particles by providing dispersed particulate of fluorinated ionomer in an aqueous polymerization medium and polymerizing at least one fluorinated monomer in the aqueous polymerization medium in the presence of the dispersed particulate of fluorinated ionomer and initiator to form the aqueous dispersion of particles of fluoropolymer.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: April 10, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke
  • Patent number: 8153721
    Abstract: Process for the preparation of finely divided aqueous polymer dispersions having a narrow particle size distribution.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: April 10, 2012
    Assignee: BASF SE
    Inventors: Roelof Balk, Franca Tiarks
  • Patent number: 8143348
    Abstract: Disclosed are coating compositions that include a continuous phase that includes water and a dispersed phase that includes a microgel having a mean particle size of greater than 50 nanometers. The microgel is formed from reactants selected so as to provide a copolymer having a certain calculated Tg and includes a cycloaliphatic (meth)acrylate.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: March 27, 2012
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Charles M. Kania, Irina G. Schwendeman, Venkateshwarlu Kalsani, Richard J. Winters, Michael Ziegler, Manfred Wunsch, Carole A. Conley
  • Publication number: 20120053254
    Abstract: The present invention relates to a process for the production of the largest possible spherical, monodisperse polyvinylpyrrolidone (PVP) seed particles in the micron range by dispersion polymerisation. The particles obtained in this way represent novel starting materials for the production of macroporous polymer particles, which can in turn be employed in preparative and analytical chromatography for protein preparation. They can also be employed as base material for further reactions. The novel process for the polymerisation of N-vinylpyrrolidone, which is inexpensive to carry out, gives particles having optimised quantities, such as monodispersity, sphericity and particle diameter, which can be employed in further reactions and have advantageous, in particular improved, properties for use in chromatographic separation methods.
    Type: Application
    Filed: April 27, 2010
    Publication date: March 1, 2012
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Matthias Joehnck, Daniel Scheid
  • Publication number: 20120010352
    Abstract: Aqueous suspension comprising 35-45 wt % of solid diacyl peroxide particles having a d50 in the range 1-10 microns, 0.05-1 wt % of a dispersant, and not more than 1 wt % of an organic solvent. This concentrated peroxide suspension comprises only a minor amount of dispersant, has a low volatile organic content and is nonetheless stable for months and low in viscosity.
    Type: Application
    Filed: March 31, 2010
    Publication date: January 12, 2012
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventor: Boen Ho O
  • Patent number: 8058376
    Abstract: A process for making an aqueous dispersion of fluoropolymer particles by polymerizing in a first polymerization step at least one fluorinated monomer having an ionic group in an aqueous polymerization medium in the presence of initiator, the polymerizing providing dispersed particulate of fluorinated ionomer, and polymerizing in a second polymerization step at least one fluorinated monomer in the aqueous polymerization medium in the presence of the dispersed particulate of fluorinated ionomer and initiator to form the aqueous dispersion of particles of fluoropolymer.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: November 15, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ralph Munson Aten, Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke
  • Patent number: 8034887
    Abstract: The present invention relates to a process for preparing microcapsules comprising a lipophilic capsule core and a capsule wall synthesized from 30% to 100% by weight, based on the total weight of the monomers, of one or more monomers (monomers I) from the group comprising C1-C24 alkyl esters of acrylic and/or methacrylic acid, acrylic acid, methacrylic acid, and maleic acid, 0% to 70% by weight, based on the total weight of the monomers, of one or more difunctional or polyfunctional monomers (monomers II) which are sparingly soluble or insoluble in water, and 0% to 40% by weight, based on the total weight of the monomers, of one or more other monomers (monomers III).
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: October 11, 2011
    Assignee: BASF SE
    Inventor: Marc Rudolf Jung
  • Patent number: 8017707
    Abstract: The invention provides homogeneous compositions in solid form comprising a) from 50 to 90% by weight of polyvinyl acetate and b) from 10 to 50% by weight of vinyl acetate-vinyl laurate copolymer, the weight percentages based on the total weight of the composition.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: September 13, 2011
    Assignee: Wacker Chemie AG
    Inventors: Christian Hoegl, Daniel Maedge, Thomas Wimmer
  • Patent number: 8013081
    Abstract: A polymer particle (10) useful for opacifying includes a polymer core (12) and a polymer sheath (16) surrounding the polymer core (12). The polymer core (12) is produced by polymerizing the polymer sheath (16) around the polymer core (12) in an emulsion. After at least a portion of the polymer core (12) is formed, a non-homopolymerizing monomer is added to the emulsion.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: September 6, 2011
    Assignee: Valspar Sourcing, Inc.
    Inventors: Martin Peter Joseph Heuts, Archie W. Garner
  • Patent number: 8013050
    Abstract: The invention relates to a process for the manufacture of a waterborne multistage polymer dispersion that has ethylenically unsaturated functional groups for crosslinking. The process comprises the steps of; a. making an aqueous emulsion or solution of a first stage polymer comprising carboxylic acid functionalized monomers to an amount sufficient to make the first stage polymer water soluble or dispersible, b. at least partially neutralizing the first stage polymer with a base, c. forming a two-stage polymer dispersion by adding to the at least partially neutralized first stage polymer a second stage monomer mixture and emulsion polymerizing said second stage monomer mixture to a second stage polymer which is less hydrophilic than the first stage polymer, d. reacting with the obtained two-stage polymer dispersion a bi-functional compound comprising an ethylenically unsaturated group and a group reactive towards the carboxylic acid in the two-stage polymer.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: September 6, 2011
    Assignee: Nuplex Resins B.V.
    Inventors: Dirk Emiel Paula Mestach, Robert Van Egmond
  • Patent number: 7985818
    Abstract: Methods for removing safrole from a sample, molecular imprinted copolymers that bind safrole, and methods of making the same are provided.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: July 26, 2011
    Assignee: R.J. Reynolds Tobacco Company
    Inventor: Svetlana I. Pertsovich
  • Patent number: 7968189
    Abstract: Provided is a re-peeling pressure-sensitive adhesive composition for a surface protecting material for an adherend having a photocatalytic layer, comprising: a (meth)acryl-based polymer including, as monomer units, 50 to 99.9% by weight of (A) at least one acrylate-based monomer represented by the general formula (1): CH2?CR1COOR2 wherein R1 represents a hydrogen atom or a methyl group, and R2 represents an alkyl group having 2 to 14 carbon atoms, 0.1 to 10% by weight of (B) a functional-group-containing vinyl-based monomer, and 0 to 49.9% by weight of (C) a vinyl-based monomer copolymerizable with the component (A) and/or the component (B); and (D) a surfactant having a molecular weight of 150 to 5000, the amount of the component (D) being from 0.01 to 30 parts by weight with respect to 100 parts by weight of the (meth)acryl-based polymer. The re-peeling pressure-sensitive adhesive composition is excellent in re-peeling property, contact-angle-recoverability, and weather resistance.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: June 28, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Takeshi Yamanaka, Kooki Ooyama
  • Patent number: RE43168
    Abstract: A polymeric latex prepared by aqueous emulsion polymerization of a monomeric mixture comprising styrene and butadiene in the presence of a seed polymer prepared by aqueous emulsion polymerization of styrene and a salt of 2-acrylamido-2-methylpropanesulfonic acid.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: February 7, 2012
    Assignee: OMNOVA Solutions Inc.
    Inventor: Ira John Westerman