Solid Polymer Utilized Is Derived From An Unsaturated Carboxylic Acid Or Salt Patents (Class 524/460)
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Publication number: 20140275389Abstract: 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: ApplicationFiled: October 19, 2012Publication date: September 18, 2014Inventors: Marianne P. Creamer, Gary W. Dombrowski, Eric C. Greyson, Eric P. Wasserman
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Patent number: 8822586Abstract: 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: GrantFiled: November 30, 2005Date of Patent: September 2, 2014Assignee: Hercules IncorporatedInventors: Susanne Bellmann, Norbert Steiner, Joerg Issberner, Christian Boekelo
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Patent number: 8822126Abstract: 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: GrantFiled: February 19, 2009Date of Patent: September 2, 2014Assignee: FUJIFILM CorporationInventor: Atsushi Sugasaki
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Patent number: 8779052Abstract: 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: GrantFiled: October 6, 2006Date of Patent: July 15, 2014Assignee: Kansai Paint Co., Ltd.Inventors: Hironori Tonomura, Yoshizumi Matsuno, Yasushi Nakao
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Publication number: 20140170428Abstract: 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: ApplicationFiled: February 24, 2014Publication date: June 19, 2014Applicant: DSM IP ASSETS B.V.Inventors: Michael Arnoldus Jacobus SCHELLEKENS, Tijs NABUURS, John GEURTS, Gerardus Cornelis OVERBEEK
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Patent number: 8754151Abstract: 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: GrantFiled: December 21, 2011Date of Patent: June 17, 2014Assignee: BASF SEInventors: Sebastian Roller, Ekkehard Jahns, Hans-Juergen Denu
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Publication number: 20140155535Abstract: 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: ApplicationFiled: December 15, 2011Publication date: June 5, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Hee Hyun Lee, Michael Joseph Otley, Michael Stephen Wolfe, Tristan Williams
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Patent number: 8741999Abstract: 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: GrantFiled: September 28, 2011Date of Patent: June 3, 2014Assignees: 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
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Patent number: 8722796Abstract: Process for preparing an aqueous polymer dispersion with small polymer particles.Type: GrantFiled: January 14, 2011Date of Patent: May 13, 2014Assignee: BASF SEInventors: Daniel Schoenfelder, Rabie Al-Hellani, Marc Schroeder, Monika Haberecht, Anna Cristadoro, Bernd Bruchmann, Rajan Venkatesh
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Publication number: 20140080959Abstract: 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: ApplicationFiled: October 30, 2013Publication date: March 20, 2014Applicant: OMNOVA SOLUTIONS INC.Inventors: Melinda H. KEEFE, James G. GALLOWAY, Ray E. DRUMRIGHT, Michael J. DEVON, Dwayne J. NICHOLSON
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Publication number: 20140037975Abstract: 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: ApplicationFiled: October 4, 2013Publication date: February 6, 2014Applicant: DSM IP ASSETS B.V.Inventors: Michael Arnoldus Jacobus SCHELLEKENS, Gerardus Cornelis OVERBEEK, Tijs NABUURS, John GEURTS
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Publication number: 20140024763Abstract: 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: ApplicationFiled: June 27, 2013Publication date: January 23, 2014Inventors: Masanori Jinnou, Takahiro Mori, Satoru Kobayashi, Shinichi Sakurada, Yutaka Kurabayashi
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Patent number: 8568750Abstract: 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: GrantFiled: March 26, 2010Date of Patent: October 29, 2013Assignee: Sekisui Plastics Co., Ltd.Inventor: Ryosuke Harada
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Publication number: 20130274402Abstract: 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: ApplicationFiled: June 13, 2013Publication date: October 17, 2013Inventors: Peter CLAASSEN, Roland Offner, Benoit Faye, Yves Vanderveken
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Patent number: 8519043Abstract: 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: GrantFiled: December 17, 2010Date of Patent: August 27, 2013Assignee: BASF SEInventors: Jens Hartig, Roelof Balk, Manfred Dargatz
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Patent number: 8492472Abstract: 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: GrantFiled: December 15, 2010Date of Patent: July 23, 2013Assignee: BASF SEInventors: Oihana Elizalde, Stephan Amthor, Jens Hartig
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Patent number: 8481631Abstract: 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: GrantFiled: May 19, 2009Date of Patent: July 9, 2013Assignees: Arkema France, Centre de la Recherche Scientifique, Universite Pierre et Marie Curie (Paris 6)Inventors: Charlotte Dire, Bernadette Charleux, Stéphanie Magnet, Laurence Couvreur
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Publication number: 20130087736Abstract: 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 encapsulType: ApplicationFiled: December 1, 2010Publication date: April 11, 2013Applicant: THE UNIVERSITY OF SYDNEYInventors: Matthew P. Baker, Timothy W. Davey, Brian S. Hawkett, Duc N. Nguyen, Caitlin C. O'Brien, Christopher H. Such
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Publication number: 20130066005Abstract: 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: ApplicationFiled: August 29, 2012Publication date: March 14, 2013Inventors: Monica Luckenbach, Ozzie M. Pressley, Wei Zhang
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Publication number: 20130050331Abstract: 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: ApplicationFiled: August 10, 2012Publication date: February 28, 2013Applicant: FUJIFILM CORPORATIONInventors: Atsushi KAERIYAMA, Toshihiro KAMADA, Kiyoshi IRITA
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Patent number: 8354459Abstract: 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: GrantFiled: August 17, 2010Date of Patent: January 15, 2013Assignee: Japan Science and Technology AgencyInventors: Hiroshi Yabu, Takeshi Higuchi
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Publication number: 20120302690Abstract: 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: ApplicationFiled: May 27, 2011Publication date: November 29, 2012Applicant: PPG Industries Ohio, Inc.Inventors: Sarah Cunningham, Youssef Moussa
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Publication number: 20120214930Abstract: 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: ApplicationFiled: February 17, 2012Publication date: August 23, 2012Applicant: Ashland Licensing and Intellectual Property LLC.Inventors: Markus Broecher, Charlotta Kanto Oeqvist, Nathalie Sieverling
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Publication number: 20120196143Abstract: 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: ApplicationFiled: April 4, 2012Publication date: August 2, 2012Applicant: DSM IP Assets B.V.Inventors: Michael Arnoldus Jacobus SCHELLEKENS, Gerardus Cornelis Overbeek, Tijs Nabuurs, John Geurts
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Publication number: 20120157577Abstract: 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: ApplicationFiled: December 21, 2011Publication date: June 21, 2012Applicant: BASF SEInventors: Sebastian ROLLER, Ekkehard Jahns, Hans-Jürgen Denu
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Patent number: 8193271Abstract: Process for preparing an aqueous polymer composition using water-soluble free radical chain regulators.Type: GrantFiled: February 4, 2008Date of Patent: June 5, 2012Assignee: BASF SEInventors: Oihana Elizalde, Matthias Gerst
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Patent number: 8188179Abstract: 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: GrantFiled: December 12, 2007Date of Patent: May 29, 2012Assignee: Canon Kabushiki KaishaInventors: Yuko Nishiwaki, Kenji Nishiguchi
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Patent number: 8163839Abstract: 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: GrantFiled: June 4, 2008Date of Patent: April 24, 2012Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Hiroyuki Shimanaka, Yoshikazu Murakami, Satoshi Isobe, Takaaki Ota, Jyunki Takada, Satoshi Dosho
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Publication number: 20120083563Abstract: 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: ApplicationFiled: June 1, 2010Publication date: April 5, 2012Applicant: BASF SEInventors: Anja Song, Holger Kern
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Publication number: 20120076843Abstract: 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: ApplicationFiled: June 11, 2010Publication date: March 29, 2012Applicant: BASE SEInventors: Marc Rudolf Jung, Francisco Javier Lopez Villanueva, Tina Schroeder-Grimonpont, Monika Haberecht, Bernd Bruchmann
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Publication number: 20120077030Abstract: 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: ApplicationFiled: September 20, 2011Publication date: March 29, 2012Applicant: BASF SEInventors: Matthias Gerst, Gerhard Auchter, Michael Groß, Daniel Wilms, Roelof Balk
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Publication number: 20120028525Abstract: 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: ApplicationFiled: September 30, 2011Publication date: February 2, 2012Applicant: POLYMER LATEX GmbH & CO. KGInventors: SOREN BUTZ, Volker Erb, Katja Siepen, Hans-Gunter Vogt
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Publication number: 20120022203Abstract: 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: ApplicationFiled: September 28, 2011Publication date: January 26, 2012Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V., AKZO NOBEL N.V.Inventors: Christian Przybyla, Oliver Struck, André Laschewsky, Bernd Paulke, Mathias Hahn
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Publication number: 20110313093Abstract: 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: ApplicationFiled: June 13, 2011Publication date: December 22, 2011Inventors: Kaibo Li, Zhaohui Qu, Robert V. Slone, Huixian Yang
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Patent number: 8080595Abstract: 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: GrantFiled: May 6, 2008Date of Patent: December 20, 2011Assignee: Omya Development AGInventors: Patrick Gane, Philipp Hunziker, Joachim Schoelkopf
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Publication number: 20110305914Abstract: 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: ApplicationFiled: June 9, 2011Publication date: December 15, 2011Applicant: BASF SEInventors: Daniel WILMS, Karl-Heinz Schumacher, Michael Groß, Georg Langhauser
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Publication number: 20110287076Abstract: 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: ApplicationFiled: March 26, 2010Publication date: November 24, 2011Applicant: SEKISUI PLASTICS CO., LTD.Inventor: Ryosuke Harada
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Patent number: 8058341Abstract: 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: GrantFiled: February 12, 2003Date of Patent: November 15, 2011Assignee: Nitto Denko CorporationInventors: Yutaka Tosaki, Hideki Nagatsu, Shinichi Kouno, Takahiro Yatagai
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Publication number: 20110251329Abstract: 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: ApplicationFiled: March 31, 2011Publication date: October 13, 2011Applicant: Arkema Inc.Inventors: Jason S. Ness, Noah E. Macy
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Publication number: 20110245401Abstract: 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: ApplicationFiled: December 15, 2010Publication date: October 6, 2011Applicant: BASF SEInventors: Oihana ELIZALDE, Stephan Amthor
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Patent number: 8030391Abstract: 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: GrantFiled: June 27, 2006Date of Patent: October 4, 2011Assignee: Celanese Emulsions GmbHInventors: Harald Petri, Ivan Cabrera
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Patent number: 8030395Abstract: 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: GrantFiled: February 22, 2007Date of Patent: October 4, 2011Assignee: 3M Innovative Properties CompanyInventors: Chi-Ming Tseng, Margaret M. Sheridan, Chih C. Hsu, Chung I Young
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Publication number: 20110224352Abstract: 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: ApplicationFiled: November 25, 2009Publication date: September 15, 2011Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Kanji Nakao, Keiichi Nakamoto
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Patent number: 8013050Abstract: 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: GrantFiled: June 10, 2005Date of Patent: September 6, 2011Assignee: Nuplex Resins B.V.Inventors: Dirk Emiel Paula Mestach, Robert Van Egmond
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Patent number: 8013049Abstract: 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: GrantFiled: January 21, 2005Date of Patent: September 6, 2011Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Hisakazu Tanaka, Kazuo Yamamura, Yoshiki Hasegawa, Masayuki Kamei
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Patent number: 8013081Abstract: 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: GrantFiled: October 13, 2006Date of Patent: September 6, 2011Assignee: Valspar Sourcing, Inc.Inventors: Martin Peter Joseph Heuts, Archie W. Garner
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Patent number: 7994252Abstract: 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: GrantFiled: June 25, 2004Date of Patent: August 9, 2011Assignee: CorrutechInventors: Phillipe Ceulemans, Olivier Ceulemans
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Publication number: 20110174453Abstract: 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: ApplicationFiled: August 19, 2009Publication date: July 21, 2011Applicants: AKZO NOBEL B.V., Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.Inventors: Christian Przybyla, Oliver Struck, André Laschewsky, Bernd-Reiner Paulke
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Publication number: 20110166282Abstract: 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: ApplicationFiled: May 19, 2009Publication date: July 7, 2011Applicants: ARKEMA FRANCE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Universite Pierre Et Marie Curie (Paris 6)Inventors: Charlotte Dire, Bernadette Charleux, Stéphanie Magnet, Laurence Couvreur
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Patent number: RE43951Abstract: 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: GrantFiled: June 25, 2004Date of Patent: January 29, 2013Assignee: CorrutechInventors: Philippe Ceulemans, Olivier Ceulemans