Solid Polymer Utilized Is Derived From An Unsaturated Carboxylic Acid Or Salt Patents (Class 524/460)
  • Publication number: 20140275389
    Abstract: Polymer particles having an average diameter from 100 nm to 10 ?m, where each particle comprises: (a) a core; and (b) lobes comprising at least 15 wt % polymerized residues of at least one C3-C6 carboxylic acid monomer.
    Type: Application
    Filed: October 19, 2012
    Publication date: September 18, 2014
    Inventors: Marianne P. Creamer, Gary W. Dombrowski, Eric C. Greyson, Eric P. Wasserman
  • Patent number: 8822586
    Abstract: The invention relates to water-in-water polymer dispersions containing a polymer A with a cationic monomer fraction of up to 60 wt. % and at least one polymer dispersant B, based on cationised dialkylaminoalkyl (meth)acrylamides with an average molecular weight of between 75,000 and 350,000 g/mol. The invention also relates to a method for producing said dispersions and to the use of the latter.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: September 2, 2014
    Assignee: Hercules Incorporated
    Inventors: Susanne Bellmann, Norbert Steiner, Joerg Issberner, Christian Boekelo
  • Patent number: 8822126
    Abstract: The invention provides a resin composition for laser engraving, having a binder polymer containing at least one of a structure unit represented by the following Formula (I) or a structure unit represented by the following Formula (II). In the Formulae, Q represents a partial structure which provides an acid group having an acid dissociation constant pKa of 0 to 20 when it is in the form of -Q-H; R1 to R3 each independently represent a hydrogen atom or a monovalent organic group; and A and B each independently represent a bivalent organic connecting group. The invention further provides a relief printing plate precursor having a relief forming layer containing the resin composition, a method for manufacturing a relief printing plate having crosslinking components of the relief forming layer and laser engraving the relief forming layer, and a relief printing plate formed thereby.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: September 2, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Atsushi Sugasaki
  • Patent number: 8779052
    Abstract: This invention provides an effect pigment-containing, water-borne base coating composition comprising water-dispersible acrylic polymer particles (A) and effect pigment (B), the water-dispersible acrylic polymer particles (A) being obtained by emulsion polymerization of a radical-polymerizable unsaturated monomeric mixture including an amido-containing, radical-polymerizable unsaturated monomer having at least two radical-polymerizable unsaturated groups per molecule, and the effect pigment (B) being contained at a pigment weight concentration (PWC) within a range of 15-50%.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: July 15, 2014
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Hironori Tonomura, Yoshizumi Matsuno, Yasushi Nakao
  • Publication number: 20140170428
    Abstract: An aqueous, metal, coating composition (and process for obtaining it) comprising a block copolymer and a polymer P; wherein the block copolymer comprises at least blocks [A]x[B]y, where at least block [A] is obtained by a controlled radical polymerisation of at least one ethylenically unsaturated monomer via a reversible addition-fragmentation chain transfer (RAFT) mechanism in solution in the presence of a control agent and a source of free radicals; and where (a) block [A] comprises (i) 0 to 80 mol % of metal adhering ethylenically unsaturated monomers; (ii) 0 to 100 mol % of water dispersible ethylenically unsaturated monomers; (iii) 0 to 70 mol % of C1 to C30 hydrocarbo (meth)acrylate and/or styrenic monomers; (iv) 0 to 35 mol % of ethylenically unsaturated monomer different from i), ii)+iii); where the amount of at least one of i), ii), iii)+iv) is >0 mol %; block [A] has a Hansch parameter <1.
    Type: Application
    Filed: February 24, 2014
    Publication date: June 19, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Michael Arnoldus Jacobus SCHELLEKENS, Tijs NABUURS, John GEURTS, Gerardus Cornelis OVERBEEK
  • Patent number: 8754151
    Abstract: The present invention relates to aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase, and a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being ?30 to 0° C. and that of the hard phase, as second stage, being 20 to 60° C., comprising at least one monomer of the general formula I in which the variables have the following definitions: n=0 to 2, R1, R2, R3=independently of one another hydrogen or methyl group, X=O or NH, Y=H, alkali metal or NH4, to processes for preparing these aqueous polymer dispersions, and to the use thereof as binders in coatings, and also to coatings comprising the polymer dispersion of the invention.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: June 17, 2014
    Assignee: BASF SE
    Inventors: Sebastian Roller, Ekkehard Jahns, Hans-Juergen Denu
  • Publication number: 20140155535
    Abstract: A process for encapsulating pigment dispersions is provided where a pigment is dispersed with a polymeric dispersant in an aqueous solvent system. The free polymer dispersant in the pigment dispersion is limited to less than 0.12 grams per gram of pigment. This dispersed pigment is then encapsulated by adding acrylate monomers and optionally acrylic and vinyl monomers and polymerizing. In the encapsulated pigment dispersion the weight ratio of final free polymer to polymer found to the final encapsulated pigment is less than 0.9. The free polymer dispersant is measured by a centrifugation method and the final free polymer is measured by a density gradient centrifugation method. Such encapsulated pigment dispersions may be used in inkjet inks and are stable to heat, aging test conditions, and solvent challenges. Prints from these inks have better durability.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 5, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Hee Hyun Lee, Michael Joseph Otley, Michael Stephen Wolfe, Tristan Williams
  • Patent number: 8741999
    Abstract: The present invention relates to a process for preparing a polymer dispersion comprising polymerising one or more water soluble anionic monomers (m1) and one or more non-ionic vinyl monomers (m2) present in a reaction mixture further comprising a polymeric stabiliser (B) and a polymeric co-stabiliser (C). It further relates to a polymer dispersion, the use of the polymer dispersion and a process for producing paper.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: June 3, 2014
    Assignees: Akzo Nobel Coatings International N.V., Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Christian Przybyla, Oliver Struck, André Laschewsky, Bernd-Reiner Paulke, Mathias Hahn
  • Patent number: 8722796
    Abstract: Process for preparing an aqueous polymer dispersion with small polymer particles.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: May 13, 2014
    Assignee: BASF SE
    Inventors: Daniel Schoenfelder, Rabie Al-Hellani, Marc Schroeder, Monika Haberecht, Anna Cristadoro, Bernd Bruchmann, Rajan Venkatesh
  • Publication number: 20140080959
    Abstract: A process comprising heating an aqueous dispersion of first structured polymer particles at a temperature of at least about 155° C., optionally in the presence of a base and/or a swelling agent, to produce an aqueous dispersion of heat treated structured polymer particles.
    Type: Application
    Filed: October 30, 2013
    Publication date: March 20, 2014
    Applicant: OMNOVA SOLUTIONS INC.
    Inventors: Melinda H. KEEFE, James G. GALLOWAY, Ray E. DRUMRIGHT, Michael J. DEVON, Dwayne J. NICHOLSON
  • Publication number: 20140037975
    Abstract: An aqueous coating composition (which optionally can coat plastic substrates) the composition comprising a block copolymer and a polymer P; where the block copolymer comprises at least blocks [A]x[B]y; where at least block [A] is obtained by a controlled radical polymerisation of at least one ethylenically unsaturated monomer via a reversible addition-fragmentation chain transfer (RAFT) mechanism (optionally in solution in the presence of a control agent and a source of free radicals); and wherein block [A] comprises 20 to 100 mol % of ethylenically unsaturated monomer units bearing water-dispersing functional groups; wherein block [B] comprises 20 to 100 mol % of ethylenically unsaturated monomer units bearing plastic adhesion promoting functional groups; and wherein polymer P is prepared in the presence of blocks [A]x[B]y. The compositions may be used to coat plastic substrates, foam; surfaces having low surface energy, hydrophobic substrates and/or polyolefins.
    Type: Application
    Filed: October 4, 2013
    Publication date: February 6, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Michael Arnoldus Jacobus SCHELLEKENS, Gerardus Cornelis OVERBEEK, Tijs NABUURS, John GEURTS
  • Publication number: 20140024763
    Abstract: The invention provides a process for producing a pigment-encapsulating polymer dispersion, comprising the steps of dispersing a liquid containing a monomer, a hydrophobe and a polymerization initiator into a water medium with a dispersant to obtain a monomer emulsion, and mixing the monomer emulsion with a pigment dispersion containing a self-dispersible pigment to which a hydrophilic group is bonded directly or through another atomic group and which is dispersed by the hydrophilic group, subjecting the resultant mixture to a shearing treatment and then polymerizing the monomer.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 23, 2014
    Inventors: Masanori Jinnou, Takahiro Mori, Satoru Kobayashi, Shinichi Sakurada, Yutaka Kurabayashi
  • Patent number: 8568750
    Abstract: A method for producing a deformed shaped particles comprising step of: absorbing a polymerizable vinyl type monomer contained in an aqueous emulsion in a seed particles and polymerizing an absorbed polymerizable vinyl type monomer, wherein the seed particles are a resin particles which are derived from a (meth)acrylic ester having an ester part containing at least an alkyl group with a number of carbon atoms of 3 or more and less than 6, and which have a weight average molecular weight of 150000 to 1000000 (measured by GPC: gel permeation chromatography) and the polymerizable vinyl type monomer contains 5 to 50 wt. % of a crosslinkable monomer to the entire amount of the polymerizable vinyl type monomer.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: October 29, 2013
    Assignee: Sekisui Plastics Co., Ltd.
    Inventor: Ryosuke Harada
  • Publication number: 20130274402
    Abstract: Process for preparing a seed latex of a methyl methacrylate polymer (PMMA) by radical polymerization in aqueous emulsion of methyl methacrylate and optionally at least one comonomer. Process for preparing a chlorinated vinyl polymer latex by radical polymerization in aqueous emulsion of at least one chlorinated vinyl monomer, according to which the polymerization takes place in the presence of at most 3% by weight, expressed relative to the total weight of the monomers, of the PMMA seed latex.
    Type: Application
    Filed: June 13, 2013
    Publication date: October 17, 2013
    Inventors: Peter CLAASSEN, Roland Offner, Benoit Faye, Yves Vanderveken
  • Patent number: 8519043
    Abstract: The present invention relates to coating compositions which comprise dispersions of polymers obtained by a two-stage procedure, to processes for preparing them, and to their use.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: August 27, 2013
    Assignee: BASF SE
    Inventors: Jens Hartig, Roelof Balk, Manfred Dargatz
  • Patent number: 8492472
    Abstract: The present invention relates to coating compositions which comprise dispersions of polymers obtained by a multistage procedure, to processes for preparing them, and to their use in corrosion protection.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 23, 2013
    Assignee: BASF SE
    Inventors: Oihana Elizalde, Stephan Amthor, Jens Hartig
  • Patent number: 8481631
    Abstract: The invention relates to a process for the preparation of an aqueous dispersion of polymer particles in an aqueous medium employing a living macroinitiator requiring a reinitiation temperature of less than 100° C. Application of the particles obtained in the field of surface coatings.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: July 9, 2013
    Assignees: Arkema France, Centre de la Recherche Scientifique, Universite Pierre et Marie Curie (Paris 6)
    Inventors: Charlotte Dire, Bernadette Charleux, Stéphanie Magnet, Laurence Couvreur
  • Publication number: 20130087736
    Abstract: The invention provides a method of preparing an aqueous dispersion of polymer encapsulated particulate material, the method comprising: providing a dispersion of the particulate material in a continuous aqueous phase, the dispersion comprising RAFT agent as a stabiliser for the particulate material; and polymerising ethylenically unsaturated monomer under the control of the RAFT agent to form polymer at the surface of the dispersed particulate material, thereby providing the aqueous dispersion of polymer encapsulated particulate material; wherein polymerisation of the ethylenically unsaturated monomer comprises: (a) polymerising a monomer composition that includes ionisable ethylenically unsaturated monomer so as to form a base responsive water swellable RAFT polymer layer that encapsulates the particulate material; and (b) polymerising a monomer composition that includes non-ionisable ethylenically unsaturated monomer so as to form an extensible, water and base permeable RAFT polymer layer that encapsul
    Type: Application
    Filed: December 1, 2010
    Publication date: April 11, 2013
    Applicant: THE UNIVERSITY OF SYDNEY
    Inventors: Matthew P. Baker, Timothy W. Davey, Brian S. Hawkett, Duc N. Nguyen, Caitlin C. O'Brien, Christopher H. Such
  • Publication number: 20130066005
    Abstract: The present invention relates to a soluble shell polymer composition comprising an alkali soluble emulsion polymer shell and an alkali insoluble emulsion polymer core, which composition is stabilized by a surfactant of the formula R—(OCH2CH2)2-6OSO3?M+, where R is a linear, branched, or cyclic C8-C24 alkyl or C12-C18 aralkyl group and M+ is a counterion. The invention further relates to a method of preparing the composition and its use as a binder in coatings formulations. Formulations prepared with the soluble shell polymer composition have excellent freeze-thaw profiles and hiding.
    Type: Application
    Filed: August 29, 2012
    Publication date: March 14, 2013
    Inventors: Monica Luckenbach, Ozzie M. Pressley, Wei Zhang
  • Publication number: 20130050331
    Abstract: Disclosed is an ink composition including: (1) a pigment; (2) a polymerization initiator having a content of 2% by mass or more with respect to a total amount of the composition and having a solubility with respect to pure water at 25° C. of 5 to 8 g/l; (3) a compound A that is at least one selected from the group consisting of dimethylacrylamide, diethylacrylamide, N-isopropylacrylamide, dimethylacetamide, N-ethylpyrrolidone, 1-cyclohexyl-2-pyrrolidone, 1-(2-hydroxyethyl)-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, tetramethylurea and gamma-valerolactone; (4) a polymerizable compound having two or more ethylenically unsaturated double bonds; and (5) water having a content of 50% by mass or more with respect to the total amount of the composition.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 28, 2013
    Applicant: FUJIFILM CORPORATION
    Inventors: Atsushi KAERIYAMA, Toshihiro KAMADA, Kiyoshi IRITA
  • Patent number: 8354459
    Abstract: An object of the present invention is to provide a method for producing a block copolymer solid in which microphase-separated structures are formed with good productivity. The present invention provides a method for producing a block copolymer solid in which a microphase-separated structure is formed, or an alloy, blend or composite solid containing a block copolymer in which a microphase-separated structure is formed, which comprises the following steps (1) to (3): (1) immersing a block copolymer solid or an alloy, blend or composite solid containing a block copolymer in a solvent in which each component is insoluble; (2) putting the solid obtained in (1) above in a pressure-resistant container; and (3) irradiating the solid or the solvent in (2) above with microwave.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: January 15, 2013
    Assignee: Japan Science and Technology Agency
    Inventors: Hiroshi Yabu, Takeshi Higuchi
  • Publication number: 20120302690
    Abstract: A latex comprising of two stage grafted acrylic is disclosed. The acrylic comprises a water soluble portion and a water insoluble portion that are grafted together. A method for making the latex, a coating comprising the latex, and substrates coated with the coating are also disclosed.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Sarah Cunningham, Youssef Moussa
  • Publication number: 20120214930
    Abstract: The present invention relates to water-in-water polymer dispersions containing cross-linked anionic polymers, methods for their preparation and their use. The water-in-water polymer dispersions are useful inter alia as flocculants, dewatering (drainage) aids and retention aids in papermaking.
    Type: Application
    Filed: February 17, 2012
    Publication date: August 23, 2012
    Applicant: Ashland Licensing and Intellectual Property LLC.
    Inventors: Markus Broecher, Charlotta Kanto Oeqvist, Nathalie Sieverling
  • Publication number: 20120196143
    Abstract: An aqueous coating composition (which optionally can coat plastic substrates) the composition comprising a block copolymer and a polymer P; where the block copolymer comprises at least blocks [A]x[B]y; where at least block [A] is obtained by a controlled radical polymerisation of at least one ethylenically unsaturated monomer via a reversible addition-fragmentation chain transfer (RAFT) mechanism (optionally in solution in the presence of a control agent and a source of free radicals); and wherein block [A] comprises 20 to 100 mol % of ethylenically unsaturated monomer units bearing water-dispersing functional groups; wherein block [B] comprises 20 to 100 mol % of ethylenically unsaturated monomer units bearing plastic adhesion promoting functional groups; and wherein polymer P is prepared in the presence of blocks [A]x[B]y. The compositions may be used to coat plastic substrates, foam; surfaces having low surface energy, hydrophobic substrates and/or polyolefins.
    Type: Application
    Filed: April 4, 2012
    Publication date: August 2, 2012
    Applicant: DSM IP Assets B.V.
    Inventors: Michael Arnoldus Jacobus SCHELLEKENS, Gerardus Cornelis Overbeek, Tijs Nabuurs, John Geurts
  • Publication number: 20120157577
    Abstract: The present invention relates to aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase, and a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being ?30 to 0° C. and that of the hard phase, as second stage, being 20 to 60° C., comprising at least one monomer of the general formula I in which the variables have the following definitions: n=0 to 2, R1, R2, R3=independently of one another hydrogen or methyl group, X=O or NH, Y=H, alkali metal or NH4, to processes for preparing these aqueous polymer dispersions, and to the use thereof as binders in coatings, and also to coatings comprising the polymer dispersion of the invention.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 21, 2012
    Applicant: BASF SE
    Inventors: Sebastian ROLLER, Ekkehard Jahns, Hans-Jürgen Denu
  • 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
  • Patent number: 8188179
    Abstract: An ink-jet recording pigment ink comprises water, a pigment, a water-soluble organic solvent and a copolymer; the copolymer being obtained by copolymerizing a silicone type macromer having a vinyl group, represented by the following Formula (1), a vinyl monomer having a hydrocarbon group having 1 to 8 carbon atoms, represented by the following Formula (2), and a monomer having an anionic functional group.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: May 29, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuko Nishiwaki, Kenji Nishiguchi
  • Patent number: 8163839
    Abstract: A pigment dispersant contains (a) 5 to 30 wt % of aromatic and/or heterocyclic vinyl monomer units, (b) 10 to 30 wt % of monomer units having acid groups, (c) 40 to 80 wt % of (meth)acrylate ester monomer units, and (d) 5 to 30 wt % of monomer units having poly(C2-6-alkylene glycol) chains or mono(C1-22-alkyl)ether chains of said glycol, said poly(C2-6-alkylene glycol) chains or mono (C1-22-alkyl)ether chains having a number average molecular weight of from 150 to 1,500. A sum of the monomer units (a) to (d) amounts to 100 wt %. The pigment dispersant has an acid value of from 30 to 300 mgKOH/g, a number average molecular weight of from 5,000 to 30,000, and a content of organic compounds, boiling points of which are not higher than 250° C., of not higher than 0.2 wt %. Also disclosed are its production process, its aqueous solution and its dispersion.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: April 24, 2012
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Hiroyuki Shimanaka, Yoshikazu Murakami, Satoshi Isobe, Takaaki Ota, Jyunki Takada, Satoshi Dosho
  • Publication number: 20120083563
    Abstract: Finely divided, cationic, aqueous polymer dispersions which are obtainable by emulsion polymerization of ethylenically unsaturated monomers in an aqueous solution of a cationic prepolymer as a dispersant, wherein first the cationic prepolymer is prepared in the presence of polymerization initiators by polymerization of (a) from 15 to 40% by weight of a mixture of at least two different (meth)acrylates which in each case have an amino group and/or quaternary ammonium group and/or (meth)acrylamides which in each case carry an amino group and/or quaternary ammonium group, (b) from 40 to 85% by weight of at least one optionally substituted styrene, (c) from 0.
    Type: Application
    Filed: June 1, 2010
    Publication date: April 5, 2012
    Applicant: BASF SE
    Inventors: Anja Song, Holger Kern
  • Publication number: 20120076843
    Abstract: The present invention relates to microcapsules comprising a capsule core and a capsule wall, obtainable by a process comprising the free-radical polymerization of an oil-in-water emulsion which comprises the following constituents: 30 to 90% 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 acid and/or methacrylic acid, acrylic acid, methacrylic acid, maleic acid, fumaric acid and itaconic acid 10 to 70% by weight based on the total weight of the monomers of one or more ethylenically unsaturated crosslinkers (monomers II), where at least 10% by weight, based on the total weight of the monomers I, II and III, is a highly branched polymeric crosslinker, 0 to 30% by weight based on the total weight of the monomers of one or more monounsaturated monomers (monomer III), which are different from the monomers I, and a hydrophobic core material, to a process for their preparation and to their use.
    Type: Application
    Filed: June 11, 2010
    Publication date: March 29, 2012
    Applicant: BASE SE
    Inventors: Marc Rudolf Jung, Francisco Javier Lopez Villanueva, Tina Schroeder-Grimonpont, Monika Haberecht, Bernd Bruchmann
  • Publication number: 20120077030
    Abstract: Described is a process for preparing an aqueous pressure-sensitive adhesive dispersion from ethylenically unsaturated, free-radically polymerizable monomers. In a first stage, a first polymer is prepared by free-radical emulsion polymerization. In a second stage, an aqueous polymer dispersion is prepared in the presence of the first polymer, where the glass transition temperature calculated for a polymer prepared from the monomers of the second stage is less than ?20° C. The monomers of the first stage comprise monomers with acid groups. The polymerization of the first stage takes place at a low pH of less than 5. The acid groups of the first polymer are neutralized during, or before and during, the polymerization of the second stage to an extent such that the pH of the polymer dispersion at the end of the second stage is greater than 5. The aqueous pressure-sensitive adhesive dispersions can be used for producing self-adhesive articles, especially self-adhesive labels and adhesive tapes.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 29, 2012
    Applicant: BASF SE
    Inventors: Matthias Gerst, Gerhard Auchter, Michael Groß, Daniel Wilms, Roelof Balk
  • Publication number: 20120028525
    Abstract: The present invention relates to a polymer latex made by free-radical emulsion polymerization comprising polymer particles containing structural units derived from at least one conjugated diene component, whereby said polymer particles comprise at least one hard phase segment and at least one soft phase segment, wherein the polymer latex is particularly suitable for the production of dip-molded articles. Furthermore, the present invention relates to a process for making such a polymer latex, to the use of said polymer latex for the production of dip-molded articles, to a compounded polymer latex composition that is suitable for the production of dip-molded articles, to a method for making dip-molded latex articles, as well as to the latex articles obtained thereby.
    Type: Application
    Filed: September 30, 2011
    Publication date: February 2, 2012
    Applicant: POLYMER LATEX GmbH & CO. KG
    Inventors: SOREN BUTZ, Volker Erb, Katja Siepen, Hans-Gunter Vogt
  • Publication number: 20120022203
    Abstract: The present invention relates to a process for preparing a polymer dispersion comprising polymerising one or more water soluble anionic monomers (m1) and one or more non-ionic vinyl monomers (m2) present in a reaction mixture further comprising a polymeric stabiliser (B) and a polymeric co-stabiliser (C). It further relates to a polymer dispersion, the use of the polymer dispersion and a process for producing paper.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 26, 2012
    Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V., AKZO NOBEL N.V.
    Inventors: Christian Przybyla, Oliver Struck, André Laschewsky, Bernd Paulke, Mathias Hahn
  • Publication number: 20110313093
    Abstract: A microdomained aqueous emulsion polymer is provided. The polymer comprises a first domain having a Tg of from ?80 to ?10° C. and comprising from 80 to 100 wt % of acrylic monomer; and a non-crosslinked second domain having a Tg of from 50 to 120° C. and comprising, as polymerized unit and based on the weight of the second domain, from 50 to 100 wt % of styrenic monomer; wherein the content of the second domain ranges from greater than 6 wt % to 30 wt % of the total weight of the first domain and the second domain. The polymer is suitable for applications including adhesives and binders, especially for pressure sensitive adhesives.
    Type: Application
    Filed: June 13, 2011
    Publication date: December 22, 2011
    Inventors: Kaibo Li, Zhaohui Qu, Robert V. Slone, Huixian Yang
  • Patent number: 8080595
    Abstract: The invention consists of a process for preparation of self-binding pigmentary particles, dry or in aqueous suspension or dispersion, using in a particular stage of the process a reverse emulsion formed from a dispersion in an oily phase of water particles and of at least one polymer of acrylamide with an acrylic monomer.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: December 20, 2011
    Assignee: Omya Development AG
    Inventors: Patrick Gane, Philipp Hunziker, Joachim Schoelkopf
  • Publication number: 20110305914
    Abstract: Described is a process for preparing an aqueous polymer dispersion from ethylenically unsaturated, free-radically polymerizable monomers. In a first stage, a first polymer is prepared by free-radical emulsion polymerization. In a second stage, an aqueous polymer dispersion is prepared in the presence of the first polymer. The monomers of the first stage comprise monomers with acid groups. The polymerization of the first stage takes place at a low pH of less than 5. The acid groups of the first polymer are neutralized during the polymerization of the second stage to an extent such that the pH of the polymer dispersion at the end of the second stage is greater than 5. The aqueous polymer dispersions can be used as adhesives for producing composite films.
    Type: Application
    Filed: June 9, 2011
    Publication date: December 15, 2011
    Applicant: BASF SE
    Inventors: Daniel WILMS, Karl-Heinz Schumacher, Michael Groß, Georg Langhauser
  • Publication number: 20110287076
    Abstract: A method for producing a deformed shaped particles comprising step of: absorbing a polymerizable vinyl type monomer contained in an aqueous emulsion in a seed particles and polymerizing an absorbed polymerizable vinyl type monomer, wherein the seed particles are a resin particles which are derived from a (meth)acrylic ester having an ester part containing at least an alkyl group with a number of carbon atoms of 3 or more and less than 6, and which have a weight average molecular weight of 150000 to 1000000 (measured by GPC: gel permeation chromatography) and the polymerizable vinyl type monomer contains 5 to 50 wt. % of a crosslinkable monomer to the entire amount of the polymerizable vinyl type monomer.
    Type: Application
    Filed: March 26, 2010
    Publication date: November 24, 2011
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventor: Ryosuke Harada
  • Patent number: 8058341
    Abstract: An aqueous dispersion type pressure-sensitive adhesive composition contains an acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type and at least one hydrophilic polymer selected from the group consisting of polyalkylene glycols, polyvinylpyrrolidone, poly(vinyl alcohol)s, and poly((meth)acrylic acid), the amount of the hydrophilic polymer being from 0.5 to 15 parts by weight per 100 parts by weight, on a solid basis, of the acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type, and a pressure-sensitive adhesive product has a pressure-sensitive adhesive layer formed from the aqueous dispersion type pressure-sensitive adhesive composition.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: November 15, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Yutaka Tosaki, Hideki Nagatsu, Shinichi Kouno, Takahiro Yatagai
  • Publication number: 20110251329
    Abstract: The invention provides a polymer particle dispersion in an aqueous medium and a method of making the same, which comprises an emulsion polymerized polymer and a macroinitiator covalently bonded to the emulsion polymerized polymer. The living macroinitiator comprises a hydrophilic, pH-insensitive monomer in reacted form. The polymer particle dispersion may be obtained by reacting at least one monomer with the living macroinitiator and without a surfactant to effect polymerization of the monomer(s). The emulsion polymerized polymer may be comprised of at least one additional ethylenically unsaturated monomer in polymerized form.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 13, 2011
    Applicant: Arkema Inc.
    Inventors: Jason S. Ness, Noah E. Macy
  • Publication number: 20110245401
    Abstract: The present invention relates to coating compositions which comprise dispersions of polymers obtained by a multistage procedure, to processes for preparing them, and to their use in corrosion protection.
    Type: Application
    Filed: December 15, 2010
    Publication date: October 6, 2011
    Applicant: BASF SE
    Inventors: Oihana ELIZALDE, Stephan Amthor
  • Patent number: 8030391
    Abstract: Multistage polymers predominantly stabilized by nonionic emulsifiers and derived from hard and soft monomer compositions containing vinyl esters, of which at least one monomer composition must contain an unsaturated compromisable organosilicon compound, are described. The plastic dispersions can be used as binders in emulsion paints and finishes and impart to these excellent scrub resistance in addition to good blocking resistance.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: October 4, 2011
    Assignee: Celanese Emulsions GmbH
    Inventors: Harald Petri, Ivan Cabrera
  • Patent number: 8030395
    Abstract: A water-based pressure sensitive adhesive dispersion is provided. The dispersion is a reaction product of a monomer solution and an aqueous phase. The monomer solution contains from about 40 to 70 parts water-insoluble monomer selected from the group consisting of alkyl acrylate, methacrylate, vinyl ester, and combinations thereof and from about 0.01 to 0.2 parts monomer soluble free radical initiator. The aqueous phase includes from about 1 to 20 parts latex binder, from about 0.1 to 2 parts surfactant, from about 0.02 to 1 parts polymeric suspension stabilizer, and water as a remaining balance. All parts are given as parts by weight per 100 parts of the dispersion. The dispersion has a solid phase of at least 60 weight percent, a viscosity of less than about 300 centipoise, measured at about 23° C., and a bimodal particle size distribution.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: October 4, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Chi-Ming Tseng, Margaret M. Sheridan, Chih C. Hsu, Chung I Young
  • Publication number: 20110224352
    Abstract: A resin composition for sealers as well as a resin composition for sealers and a paint composition for sealers that contains the resin composition for sealers are useful for sealers to be used with such inorganic building materials as ceramic-based building materials. The resin emulsion for sealers is a resin emulsion which contains emulsion particles having an inner layer and an outer layer. The inner layer is formed with a polymer which is formulated by means of emulsion polymerization of a monomer component containing styrene and a monomer other than the styrene, and the outer layer is formed with a polymer which is formulated by means of emulsion polymerization of a monomer component containing a carboxyl-group-containing monomer and a monomer other than the carboxyl-group-containing monomer.
    Type: Application
    Filed: November 25, 2009
    Publication date: September 15, 2011
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kanji Nakao, Keiichi Nakamoto
  • 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: 8013049
    Abstract: The present invention discloses a production method of core-shell type highly liquid absorbent resin particles comprising: (1) a first step in which a particle core portion is formed by suspension polymerizing an aqueous solution (e) containing (meth)acrylic acid, a crosslinking agent (c) and an anionic surfactant (d) in a hydrophobic organic solvent (a) containing a nonionic surfactant (b), and (2) a second step in which a shell portion that covers the particle core portion is formed by suspension polymerizing an aqueous solution (g) containing a water-soluble vinyl polymer (f), having carboxyl groups and polymerizable unsaturated double bonds and having a number average molecular weight of 500 to 10000, in a suspension obtained in the first step.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: September 6, 2011
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Hisakazu Tanaka, Kazuo Yamamura, Yoshiki Hasegawa, Masayuki Kamei
  • 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: 7994252
    Abstract: An adhesive composition comprising an amount of an adhesive, and an amount of an additive which is selected from the group of homopolymers of acrylic acid, copolymers of acrylic acid and, polyacrylates, polyurethanes, cellulose thickening agent, natural or synthetic gum, natural or synthetic resin, silica or an inorganic mineral having a layered structure.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: August 9, 2011
    Assignee: Corrutech
    Inventors: Phillipe Ceulemans, Olivier Ceulemans
  • Publication number: 20110174453
    Abstract: The invention relates to an aqueous polymer dispersion comprising an anionic water-soluble dispersion polymer comprising in polymerized form a monomer mixture comprising (i) one or more anionic monomers, (ii) a first non-ionic vinyl monomer which is acrylamide, and (iii) at least one second non-ionic vinyl monomer; a water-soluble salt and a stabilizer, wherein the water soluble salt is present in an amount of at least 2.0% by weight, based on the total weight of the dispersion. The invention further relates to a process for producing the aqueous polymer dispersion, use of the aqueous polymer dispersion as a flocculating agent in papermaking or for water purification, and a process for producing paper which comprises adding one or more drainage and retention aids comprising the aqueous polymer dispersion to an aqueous suspension containing cellulosic fibres and then dewatering the obtained suspension.
    Type: Application
    Filed: August 19, 2009
    Publication date: July 21, 2011
    Applicants: AKZO NOBEL B.V., Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Christian Przybyla, Oliver Struck, André Laschewsky, Bernd-Reiner Paulke
  • Publication number: 20110166282
    Abstract: The invention relates to a process for the preparation of an aqueous dispersion of polymer particles in an aqueous medium employing a living macroinitiator requiring a reinitiation temperature of less than 100° C. Application of the particles obtained in the field of surface coatings.
    Type: Application
    Filed: May 19, 2009
    Publication date: July 7, 2011
    Applicants: ARKEMA FRANCE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Universite Pierre Et Marie Curie (Paris 6)
    Inventors: Charlotte Dire, Bernadette Charleux, Stéphanie Magnet, Laurence Couvreur
  • Patent number: RE43951
    Abstract: An adhesive composition comprising having an amount of an adhesive, and an amount of an additive which is selected from the group of homopolymers of acrylic acid, copolymers of acrylic acid and, polyacrylates, polyurethanes, cellulose thickening agent, natural or synthetic gum, natural or synthetic resin, silica or an inorganic mineral having a layered structure.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: January 29, 2013
    Assignee: Corrutech
    Inventors: Philippe Ceulemans, Olivier Ceulemans