Normally Solid Polymer Is Formed From Ethylenically Unsaturated Dicarboxylic Acid, Ester, Salt, Or Anhydride Thereof Patents (Class 526/203)
  • Patent number: 11035076
    Abstract: Cellulosic materials modified with a surface modifier to promote compatibility with a hydrophobic material and methods for producing surface-modified cellulosic materials are provided. The methods include providing a slurry of a cellulosic material and adding a surface modifier to the slurry. The surface modifier may be added to the slurry in a soluble form and precipitated by adjusting the pH. The surface-modified cellulosic material may be solvent-dried and/or dried using conventional drying methods to enhance hydrophobicity. To solvent-dry the surface-modified cellulosic material, a solvent is added to an aqueous slurry of the surface-modified cellulosic material to form an azeotrope. The azeotrope has a boiling point that is less than the boiling point of the solvent. The slurry is distilled to remove the azeotrope from the surface-modified cellulose material. The solvent is removed from the surface-modified cellulose material.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: June 15, 2021
    Assignee: PERFORMANCE BIOFILAMENTS INC.
    Inventors: Gurminder Minhas, Keith Gourlay
  • Patent number: 9926466
    Abstract: Surfaces are modified with polymeric or monomeric amic acids that also comprise one or more tertiary amine functional groups. The amic acids may provide benefits including hydrophilicity, soil resistance, and corrosion inhibition to the treated surfaces. Compositions and methods for treating surfaces are provided.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: March 27, 2018
    Inventor: Alice Hudson
  • Patent number: 9605094
    Abstract: There is disclosed a method for producing water-absorbent resin particles, comprising a polymerization step that includes mixing an oily liquid comprising a hydrocarbon dispersing medium and a surfactant, and an aqueous liquid comprising an aqueous solvent and a water-soluble ethylenically unsaturated monomer, forming a suspension comprising an oily liquid and an aqueous liquid dispersed in the oily liquid, and polymerizing the water-soluble ethylenically unsaturated monomer in the suspension. The HLB of the surfactant is 6 or greater, and the temperature of the suspension is kept at 35° C. or higher during the period from initial mixing of the oily liquid and aqueous liquid until complete mixing of the entire amounts.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: March 28, 2017
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Atsushi Heguri, Kenji Tanimura, Yuichi Onoda, Masayoshi Handa
  • 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: 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: 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: 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: 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: 8410232
    Abstract: Esters of itaconic acid are polymerized in aqueous medium in the presence of seed particles. The seed particles may absorb the monomer and provide for polymerization to a desired particle size. The polymers that are produced may be employed in adhesives, paints, and paper formulations.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: April 2, 2013
    Assignee: University of New Hampshire
    Inventor: Yvon Durant
  • 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: 20120130034
    Abstract: An inorganic/organic composite support includes an inert inorganic material, a complex compound composed of a polylol and a magnesium halide, and an organic polymer containing a polar functional group. Said complex compound loaded with the organic polymer is deposited on the inert inorganic material. When the inorganic/organic composite support used as a polyolefin catalyst carrier is applied to ethene or propylene polymerization, the fusion-flow ratio of the obtained polymerisate is remarkably increased and its processing performance is improved. When the catalyst is applied to ethene polymerization, the fusion-flow ratio of the polymerisate can be adjusted by changing the content of hydrogen. When the catalyst is applied to ethene or propylene polymerization, the catalyst activity is high.
    Type: Application
    Filed: April 15, 2010
    Publication date: May 24, 2012
    Inventors: Yongrong Yang, Wenqing Wu, Jingdai Wang, Lijun Du, Wei Li, Lina Fan, Binbo Jiang, Zhengliang Huang
  • 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: 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: 7833687
    Abstract: The present invention provides an aqueous dispersion of nonspherical fine resin particles having excellent storage stability and processability such as aggregation and adherence to other substances, a method for producing the aqueous dispersion of fine resin particles, and a method for producing toner particles using the aqueous dispersion of fine resin particles. The present invention relates to an aqueous dispersion of fine resin particles characterized in that the fine resin particles are nonspherical particles with an average minor axis being 0.02 ?m or more and 1.00 ?m or less and an average ratio of a major axis to a minor axis being 2.0 or more and 5.0 or less, a method for producing the aqueous dispersion of fine resin particles, and a method for producing toner particles using the aqueous dispersion of fine resin particles.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: November 16, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masayoshi Kato, Takayuki Toyoda, Ryuji Higashi, Ryo Natori, Takaho Shibata, Yuya Chimoto, Takeshi Miyazaki
  • Patent number: 7829636
    Abstract: The embodiments herein relate to a method of synthesizing new improved reactive terpolymer, S-MMA-X (styrene/modified maleic anhydride/X) wherein X is any type of polymers. The method involves synthesizing styrene-modified maleic anhydride complex (SMMA) with the ability to react with all kinds of polymers to produce new reactive terpolymer with formation of nano particles inside them. The nanoparticle formations improve the physio-chemical, thermal and mechanical properties of the newly formed reactive terpolymer when compared to natural rubber, their derivatives, EPDM or other known polymer etc. Depending on the property of the end product polymers produced by the invention, the end use can be varied. In one embodiment, the polymer X is natural rubber (NR) and the end product terpolymer is used as bitumen modifier. In another embodiment, the polymer X is ethylene-propylene diene monomer (EPDM) and the end product terpolymer behaves like a smart particle and absorbs oil and water contaminants.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: November 9, 2010
    Inventors: Sara Shaghaghi, Reza Shaghaghi
  • Patent number: 7595368
    Abstract: Nanoflims useful for filtration are prepared from amphiphilic species and one or more polymeric components. The amphiphilic species or components may be oriented on an interface or surface. A nanofilm may be prepared by coupling one or more of the components. The nanofilm may also be deposited or attached to a substrate.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: September 29, 2009
    Assignee: Covalent Partners, LLC
    Inventors: Joshua W. Kriesel, Donald B. Bivin, David J. Olson, Jeremy J. Harris
  • Patent number: 7008312
    Abstract: The present invention relates to the use of an aqueous polymer dispersion comprising dispersed particles of at least one polymer A1 having a glass transition temperature, Tg, of from ?20° C. to +35° C. and obtainable through free-radical emulsion polymerization in the presence of a polymer A2 synthesized from from 50 to 99.5% by weight of at least one ethylenically unsaturated monocarboxylic and/or dicarboxylic acid whose carboxylic groups can form an anhydride group, or mixtures thereof, from 0.5 to 50% by weight of at least one ethylenically unsaturated compound selected from the esters of ethylenically unsaturated monocarboxylic acids and the monoesters and diesters of ethylenically unsaturated dicarboxylic acids with an amine containing at least one hydroxyl group, and up to 20% by weight of at least one further monomer as binder for producing abrasive material.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: March 7, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Laubender, Matthias Gerst, Bernd Reck, Manfred Weber
  • Patent number: 7001528
    Abstract: The use of an aqueous polymer dispersion comprising dispersed particles of at least one polymer A1 obtainable by free-radical emulsion polymerization in the presence of a polymer A2 synthesized from from 50 to 99.5% by weight of at least one ethylenically unsaturated monocarboxylic and/or dicarboxylic acid, from 0.5 to 50% by weight of at least one ethylenically unsaturated compound selected from the esters of ethylenically unsaturated monocarboxylic acids and the monoesters and diesters of ethylenically unsaturated dicarboxylic acids with an amine containing at least one hydroxyl group, up to 20% by weight of at least one further monomer as a binder for producing filter materials.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: February 21, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Laubender, Matthias Gerst
  • Patent number: 6962953
    Abstract: The present invention relates to heat and storage stable vinyl polymer polyol secondary dispersions containing A) at least one vinyl polymer resin having functional groups selected from hydroxyl, carboxyl and/or sulfonic acid groups and dispersed in a water/solvent mixture in the presence of a neutralizing agent, and B) at least one amphiphilic polymer built up from a hydrophobic and a hydrophilic segment. The invention also relates to a process for the preparation of the vinyl polymer polyol secondary dispersions by preparing vinyl polymer resin A) by polymerizing a mixture of ethylenically unsaturated monomers a) in the presence of an initiator b) in a water/solvent mixture and adding at least one amphiphilic polymer B), then at least partly neutralizing and dispersing the resulting product, optionally after the addition of a further amount of water.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: November 8, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Probst, Martin Melchiors, Wieland Hovestadt, Michael Sonntag, Burkhard Köhler, Bernhard Jansen
  • Patent number: 6949601
    Abstract: The present invention concerns large spherical polymer particles with a narrow size distribution and a procedure for producing such particles. The procedure is characterized in that a seed polymerization is performed in which the start particles have a very high ability to absorb new monomer so that finished particles are obtained after only one stage of polymerization even if the finished particles are to be as large as in the range 10 to 100 ?m. The procedure is also characterized in that, when porous particles are produced, a porous structure can be formed in which the fraction of micropores is insignificant. Another characteristic feature of the procedure is that the size distribution of the finished particles is narrow and in some cases narrower than in the start particles.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: September 27, 2005
    Assignee: Norsk Hydro ASA
    Inventors: Kari-Anne Leth-Olsen, Øystein Paulsen, Steinar Pedersen, Bård Sæthre, Rolf Olaf Larsen
  • Patent number: 6861484
    Abstract: 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 hydrophobic moieties with a pre-determined structure, and have an average diameter of 50 to 500 nm. The amphipathic polymeric particles may be prepared by a side-chain conversion method or a polymerization process involving an ATRP step, with or without a cross-linking agent. This invention improves the stability of polymer and inks by both ionic and steric stabilization of the suspended polymer particles.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: March 1, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Sivapackia Ganapathiappan
  • Patent number: 6824874
    Abstract: Methods and materials for sealing and insulating a fuel cell plate are disclosed. The disclosed process includes applying a coating precursor on at least one surface of the fuel cell plate, and curing the coating precursor by exposure to radiation. Disclosed coating precursors include those containing an acrylated oligomer and a photoinitiator, which can polymerize in response to ultraviolet or electron beam radiation. Other disclosed coating precursors are those that can polymerize in response to exposure to infrared radiation or heating, and include epoxy nitrile resins and organopolysiloxane resins. The disclosed processes and coating precursors provide certain advantages over conventional methods and designs for insulating and sealing fuel cell plates since the disclosed coating precursors can be quickly and precisely applied to fuel cell plates by, for example, screening printing.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: November 30, 2004
    Assignee: Dana Corporation
    Inventors: Kanu G. Shah, Frank W. Popielas, Brent R. Boldt, Dennis F. Person
  • Patent number: 6794465
    Abstract: The present invention is a method of preparing an acrylic copolymer using as a raw material a monomer mixture comprising 50 mole % or more of a monomer having a polymerizable double bond formed by a carbon atom to which no hydrogen atom is bonded and a carbon atom to which a hydrogen atom is bonded, wherein after the polymerization is carried out at a polymerization temperature of 150° C. or higher, further heating at 80-130° C. is done. The present invention can provide a method of preparing an acrylic copolymer with a low amount of unreacted monomers using high temperature polymerization at 150° C. or higher.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: September 21, 2004
    Assignee: Nippon Paint Compnay, Ltd.
    Inventors: Tomohito Asai, Masatoshi Oohata, Koji Nakajima
  • Patent number: 6642330
    Abstract: Pressure sensitive adhesive (PSA) polymers, especially low Tg, high tack, nonpolar and polar polymers useful in formulating PSA can be solubilized or dispersed in a supercritical fluid (SCF), such as liquid CO2 or supercritical CO2, using an organic cosolvent such as toluene. PSA polymers can be polymerized in SCF fluids to make unique adhesive products. Inclusion of a fluorinated reactant in the SCF polymerization process yields a PSA with improved resistance to mineral oil.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: November 4, 2003
    Assignee: Nitto Denko Corporation
    Inventors: Vincent D. McGinniss, Bhima R. Vijayendran, Kevin B. Spahr, Kazuhiko Shibata, Takayuki Yamamoto
  • Patent number: 6632869
    Abstract: A process for preparing copolymers based on vinyl esters and ethylene and, if desired, further comonomers in the form of their aqueous dispersions, having a solids content of greater than 65% and a Brookfield viscosity (20 s−1) of less than 10,000 mPa·s, by means of free-radically initiated polymerization of one or more monomers selected from vinyl esters and ethylene and, if desired, further monomers copolymerizable therewith, in the presence of one or more protective colloids, polymerization being conducted in the presence of from 2 to 15% by weight of seed latex, based on the amount of vinyl ester, said process comprising a) polymerizing without adding emulsifier, and in the presence of one or more polyvinyl alcohols protective colloids having a degree of hydrolysis of from 80 to 95 mol % and a Höppler viscosity in 4% strength aqueous solution of from 3 to 30 mPa·s, and b) introducing the seed latex in a fraction of from 30 to 75% by weight before beginning the polymerization and
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: October 14, 2003
    Assignee: Wacker Polymer Systems GmbH & Co. KG
    Inventor: Hans-Peter Weitzel
  • Patent number: 6590053
    Abstract: Pressure sensitive adhesive (PSA) polymers, especially low Tg, high tack, nonpolar and polar polymers useful in formulating PSA can be solubilized or dispersed in a supercritical fluid (SCF), such as liquid CO2 or supercritical CO2, using an organic cosolvent such as toluene. PSA polymers can be polymerized in SCF fluids to make unique adhesive products. Inclusion of a fluorinated reactant in the SCF polymerization process yields a PSA with improved resistance to mineral oil.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: July 8, 2003
    Assignee: Nitto Denko Corporation
    Inventors: Vincent D. McGinniss, Bhima R. Vijayendran, Kevin B. Spahr, Kazuhiko Shibata, Takayuki Yamamoto
  • Patent number: 6538057
    Abstract: Adhesives comprising: a) from 5.0 to 95.0% by weight of an adhesive dispersion having a viscosity in the range from 2000 to 10,000 mpPa·s, which comprises (a1) an aqueous polymer dispersion which is obtainable by free-radical polymerization of a mixture M which comprises at least one ethylenically unsaturated monomer A to give a polymer P in the presence of at least one protective colloid-based on a water-soluble prepolymer which comprises at least one water-soluble monomer B, and further additives if desired, (a2) if desired, a base selected from the group consisting of alkali metal.hydroxides, ammonia and volatile organic amines, (a3) if desired, a completely water-miscible organic solvent, and, further additives; (b) from 0 to 90.0% by weight of a polysaccharide and/or a protein and/or a protein degradation product; (c) from 0 to 95.0% by weight of at least one filler; (d) from 0 to 10.0% by weight of at least one emulsifier; (e) from 0 to 30.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: March 25, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerald Wildburg, Dieter Urban, Georg Langhauser, Karl-Heinz Schumacher, Oliver Hartz, Eckehardt Wistuba
  • Patent number: 6423769
    Abstract: 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 monomers, which includes the following measures: (1) polymerizing a first monomer mixture M by the method of free-radical aqueous emulsion polymerization to give a polymer P, wherein the polymerization is carried out in an aqueous reaction medium having a pH of less than 5, (2) adding a base to the dispersion of the polymer P to raise the pH of the dispersion by at least 2 pH units, and (3) polymerizing a further monomer mixture M′, which is different from the monomer mixture M, in the dispersion of the polymer P, to give a polymer P′, the monomer mixtures M and M′ independently of one another including from 0.1 to 5% by weight, based on the total amount of the monomers M and M′, respectively, of at least one monomer M1 which has at least one acid group and from 95 to 99.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: July 23, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Gerst, Alexander Centner
  • Patent number: 6413629
    Abstract: An easy adhesion film for a transparent conductive thin film comprises a transparent polymer film and an easy adhesion layer formed on the transparent polymer film, wherein the easy adhesion layer comprises at least an ionizing radiation curable resin binder, a (meth)acrylate copolymer binder and polymethyl methacrylate resin particles. The easy adhesion film has high durability, transparency and anti-Newton ring property when provided with a transparent conductive thin film.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: July 2, 2002
    Assignee: Kimoto Co., Ltd.
    Inventor: Yoshihisa Kimura
  • Patent number: 6348530
    Abstract: Heat-curable aqueous compositions which comprise a carboxyl-containing polymer component and optionally a hydroxyalkylated amine are used as binders for shaped articles.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: February 19, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Reck, Stefan Dreher, Wilhelm Friedrich Beckerle, Eckehardt Wistuba, Michael Seufert, Joachim Roser, Johannes Türk
  • Patent number: 6235810
    Abstract: A method for the preparation of latexes with hollow polymer particles useful as opacifying agents. The process comprises the preparation of hollow polymer particle latex by emulsion copolymerization with water soluble initiator and anionic surfactant as follows: a) preparation of seed latex of copolymer containing methyl methacrylate and methacrylic acid; b) preparation of latex of highly carboxylated copolymer containing methyl methacrylate and a cross-linking agent and optionally a vinyl aromatic compound; c) using highly carboxylated latex synthesized at stage b) in the preparation of the intermediate shell comprising a copolymer of methyl methacrylate, acrylic acid ester, a cross-linking agent and optionally vinyl aromatic compound, said intermediate shell copolymer having a glass transition temperature below 80° C.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: May 22, 2001
    Assignee: Neste Chemicals OY
    Inventors: Valery Pavlyuchenko, Nina Byrdina, Sergey Ivanchev, Mikael Skrifvars, Erkki Halme, Hanna Laamanen, Jukka Koskinen
  • Patent number: 6121371
    Abstract: A process is provided for the preparation of (co)polymer emulsions or suspensions from a full range of free radically (co)polymerizable monomers, wherein the (co)polymers exhibit the characteristics of "living" polymerization, including one or more of predictable molecular weights, narrow or controllable molecular weight distributions and a variety of polymer architectures, including the roles of surfactants, catalyst and ligands, several initiation methods, and methods for catalyst removal from the emulsions or suspensions made, and the (co)polymer emulsions and suspensions made thereby.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: September 19, 2000
    Assignee: Carnegie Mellon University
    Inventors: Krzysztof Matyjaszewski, Scott G. Gaynor, Jian Qiu, Mircea Teodorescu
  • Patent number: 6093766
    Abstract: The present invention relates to the preparation of heterogeneous, water-resistant polyvinyl ester dispersions having a film-forming temperature of below 10.degree. C., comprising the formation of a homo- or copolymer A, having a glass transistion temperature of more that 20.degree. C., by seed polymerization of a monomer mixture comprising 85-100% by weight of a vinyl ester of carboxylic acids having 1 to 18 carbon atoms,0-10% by weight of an .alpha.,.beta.-unsaturated carboxylic acid and/or of an N-functional compound and0-5% by weight of a polyethylenically unsaturated monomer in the presence of a seed base comprising a copolymer B having a glass transition temperature of below 20.degree. C., comprising45-98% by weight of a vinyl ester of carboxylic acids having 1 to 18 carbon atoms,2-50% by weight of an .alpha.-olefin having 1 to 4 carbon atoms and0-5% by weight of a polyethylenically unsaturated monomer.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: July 25, 2000
    Assignee: Clariant GmbH
    Inventors: Martin Jakob, Werner Prass
  • Patent number: 6063725
    Abstract: An olefin polymerization catalyst system comprising an organic transition metal compound and a support, wherein an organic transition metal compound is soluble in an inert organic solvent and a support which is insoluble in the inert organic solvent, and the support comprises an organic high molecular weight compound which contains a specific carbonyl-containing group. The catalyst system can polymerize an olefin in a high activity, provides polymer with high stereoregularity, prevents adhesion or fouling of the polymer generated in the course of polymerization or an organic aluminum oxy compound on the inner wall of the reactor, leads to high bulk density of the polymer and very reduced level of fisheye and/or gel generation on the processed item, can maintain high productivity, can manufacture high quality product, and thus provides extremely high contribution in industry.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: May 16, 2000
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tadahiro Sunaga, Yukio Ishii, Tadashi Asanuma
  • Patent number: 6028135
    Abstract: A process for the preparation of aqueous polymer dispersions of low viscosity with polymer volume concentrations of at least 50% by volume, based on the polymer dispersion, by free-radical emulsion polymerization of ethylenically unsaturated monomers, with the exception of vinyl halides and vinylidene halides, in the presence of at least one initiator and at least one initial polymer involves emulsifying the major proportion of the monomers in an aqueous dispersion of the initial polymer and supplying this emulsion continuously to the polymerization reaction.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: February 22, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Keller, Bernhard Schuler, Bernd Stanger
  • Patent number: 5981671
    Abstract: The invention relates to a process and an apparatus for the microsuspension polymerization of vinyl chloride in vessels whose contents are agitated predominantly by natural convection where, in a reactor having a ratio of height H to diameter D of H/D 2, which is equipped externally or internally with a heat exchanger provided with water and connected to a pumped circulation system provided with water, the introduction of the cooling water takes place in the upper third of the heat exchanger and the cooling water is conducted downward and is conducted away in the lower third of the heat exchanger.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: November 9, 1999
    Assignee: Vinnolit Kunststoff GmbH
    Inventors: Hardo Wiemer, Axel Dieckmann, Steffen Kunze, Oliver Mieden
  • Patent number: 5939482
    Abstract: The invention concerns a two-stage method for the preparation of aqueous, self-crosslinking copolymer dispersions made from acrylate copolymers having acetoacetyl and carboxylic groups. The copolymers are neutralized with polyamines which act as crosslinking agents. These copolymers are useful in paints as binders that crosslink at room temperature or at elevated temperatures.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: August 17, 1999
    Assignee: Vianova Resins Aktiengesellschaft
    Inventors: Ingo Kriessmann, Rami-Raimund Awad, Hannelore Gsoell, Kurt Gossak, Bernhard Hirschmann
  • Patent number: 5898064
    Abstract: Thermoplastic or thermosetting resin particles having a narrow particle size distribution are produced by suspending a liquid resinous composition in an aqueous solution of an anionic or cationic polyelectrolyte as primary particles of oil droplets, adjustion the suspension at a pH at which the polyelectrolyte is insolubilized to agglomerate into secondary particles of larger particle size, and allowing the secondary particles in the suspension to solidify.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: April 27, 1999
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Yutaka Harada, Takehiro Ojima, Haruhiko Sato
  • Patent number: 5886109
    Abstract: An azo group-containing high molecular weight compound including --COHN--, an ester linkage, or an amido linkage and a monomer units of 10 to 1000 derived from .alpha.,.beta.-ethylenically unsaturated monomer is effective for producing a block copolymer having two or more polymer segments different in structure by one-step reaction.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: March 23, 1999
    Assignee: Wako Pure Chemical Industries, Ltd.
    Inventors: Hiromi Kitano, Kazuo Shiraki, Yoshihisa Yamashita
  • Patent number: 5863998
    Abstract: An unsaturated acid-functional monomer having the structure: ##STR1## wherein R is hydrogen or methyl and polymers prepared using the monomer are disclosed.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: January 26, 1999
    Assignee: The Sherwin-Williams Company
    Inventor: Rubing Cai
  • Patent number: 5849853
    Abstract: Water-insoluble polymers are prepared by free radical polymerization of ethylenically unsaturated monomers by a process in which the polymerization is carried out in an aqueous gel phase having a viscosity of at least 800 mPa.s and the gel former has a molecular weight of more than 20,000. The dispersions obtained have a long shelf life and the polymer can be readily precipitated.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: December 15, 1998
    Assignee: BASF Aktiengesellschaft
    Inventor: Christian Schade
  • Patent number: 5780565
    Abstract: A polymerization process produces polymers that are insoluble in a reaction mixture that was homogeneous before the polymer began to form. A dispersing agent in the polymerizing system (i.e., the reaction mixture plus the dispersing agent) allows a kinetically stable dispersion of the polymer to be formed in this polymerizing system. The polymerization process is performed in a fluid held under superatmospheric conditions such that the fluid is a liquid or a supercritical fluid; the fluid being carbon dioxide, a hydroflurocarbon, a perfluorocarbon, or a mixture of any of the foregoing.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: July 14, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert S. Clough, Cheryl L. Senger, John E. Gozum
  • Patent number: 5679735
    Abstract: A process for the preparation of a synthetic resin dispersion stabilized by a protective colloid employing at least one initiator and based on a polymer of (a) a first monomer of at least one ester of acrylic acid or methacrylic acid and an alcohol containing 1 to 22 carbon atoms; and optionally, (b) a second monomer which can be copolymerized with the first monomers. The process comprises introducing at least 50% of the monomers based on the total weight of the monomers, at least 50% of the protective colloid based on the total weight of the protective colloid, and up to 50% of the initiator based on the total weight of the initiator into a reaction vessel to form an aqueous emulsion. Any remaining monomers and protective colloid and at least 50% of the initiator based on the total weight of the initiator are then added to the reaction vessel at a temperature of 30.degree. to 100.degree. C.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: October 21, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ulrich Geissler, Helmut Rinno, Heinz-Josef Thevissen
  • Patent number: 5644004
    Abstract: A novel and safe ethylenically unsaturated peroxyester composition derived from an ethylenically unsaturated dicarboxylic acid is provided, as well as processes for making and using the composition. The peroxyester composition comprises about 0.04 to about 0.70 mole fraction of a first component compound having a formula I: ##STR1## about 0.32 to about 0.50 mole fraction of a second component compound having a formula II: ##STR2## about 0.04 to about 0.70 mole fraction of a third component compound having a formula III: ##STR3## wherein Q is an unsaturated ethylene divalent radical and R.sup.1 and R.sup.2 are organic substituents. Polymeric-peroxides are prepared via polymerizing the peroxyester compositions. The peroxyester compositions are also used for curing unsaturated polyester resins and for initiating polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: July 1, 1997
    Assignee: Elf Atochem North America, Inc.
    Inventor: Jose Sanchez
  • Patent number: 5521267
    Abstract: Emulsifier-free synthetic resins and mixtures of synthetic resins with water are used as binders for water-borne printing inks and printing varnishes. The resins contain: (a) a polymer resin A containing acid groups which may have been neutralized or partially neutralized and can be prepared by in-situ polymerization of ethylenically unsaturated compounds containing acid groups with further ethylenically unsaturated compounds and condensation with monohydroxy compounds and, if desired, neutralization or partial neutralization, and (b) if desired, a water-insoluble polymer resin B in the form of latex particles which can be prepared by emulsion polymerization of ethylenically unsaturated compounds in the presence of the polymer resin A.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: May 28, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Astrid Giencke, Petra Ulrich, Gerd Walz, Bernd Mergardt
  • Patent number: 5498653
    Abstract: This invention relates to rosin carboxypyrrolidinone adducts. In particular, this invention relates to water-soluble resins derived from the reaction product of a modified rosin with a hydroxyl-containing carboxypyrrolidinone derivative. These resins can be used to make acrylic latex compositions which can, in turn, be utilized to produce water-based flexographic and gravure ink formulations.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: March 12, 1996
    Assignee: Westvaco Corporation
    Inventor: G. Frederick Hutter
  • Patent number: 5420173
    Abstract: A novel and safe ethylenically unsaturated peroxyester composition derived from an ethylenically unsaturated dicarboxylic acid is provided, as well as processes for making and using the composition. The peroxyester composition comprises about 0.04 to about 0.70 mole fraction of a first component compound having a formula I: ##STR1## about 0.32 to about 0.50 mole fraction of a second component compound having a formula II: ##STR2## about 0.04 to about 0.70 mole fraction of a third component compound having a formula III: ##STR3## wherein Q is an unsaturated ethylene divalent radical and R.sup.1 and R.sup.2 are organic substituents. Polymeric-peroxides are prepared via polymerizing the peroxyester compositions. The peroxyester compositions are also used for curing unsaturated polyester resins and for initiating polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: May 30, 1995
    Inventor: Jose Sanchez
  • Patent number: 5371135
    Abstract: A modified olefin resin which can be dissolved in water by neutralization with an alkali and has an acid value of at least 30, produced by reacting a copolymer obtained from an .alpha.-olefin having at least 6 carbon atoms and maleic anhydride with at least one modifier having at least one functional group selected from the class consisting of hydroxyl, amino, aziridinyl and mercapto groups.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: December 6, 1994
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventor: Yoshiko Suzuki