Polymerizing In The Presence Of A Solid Polymer Derived From Ethylenic Reactants Only Patents (Class 524/461)
  • Patent number: 4717750
    Abstract: A process for preparing a structure reinforced latex particle whose film has improved tensile and elongation properties prepared by an emulsion polymerization comprising a three-stage monomer feed addition. The second monomer feed is an amount from about 5 to about 30 parts per hundred parts monomer in said latex particle and is a polymer of which would have a T.sub.g greater than either the first or third monomer feed. The subject structure reinforced latex particle provides a film having improved tensile properties without a corresponding reduction in elongation. A pressure sensitive adhesive formulated with the structure reinforced latex particle is also provided.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: January 5, 1988
    Assignee: The Dow Chemical Company
    Inventors: Ashok C. Makati, Do I. Lee, Mezzie L. Ash
  • Patent number: 4716192
    Abstract: A method for preparing a stable vinyl chloride based resin emulsion which comprises a copolymer colloidally dispersed in an aqueous medium, the copolymer having a Tg from 0.degree. to 50.degree. C.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: December 29, 1987
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John G. Iacoviello
  • Patent number: 4714731
    Abstract: A metal container coating composition comprising a crosslinking resin and an aqueous polyvinyl alcohol/vinyl chloride-ethylene copolymer emulsion, the copolymer having a Tg from 0.degree. to 50.degree. C., about 65 to 90 wt % vinyl chloride, about 5 to 35 wt % ethylene, 0 to 10 wt % olefinically unsaturated copolymerizable monomer and prepared by emulsion polymerization of vinyl chloride, ethylene and, optionally, an olefinically unsaturated comonomer in the presence of 3 to 15 wt % polyvinyl alcohol as the dispersing agent.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: December 22, 1987
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John G. Iacoviello
  • Patent number: 4694032
    Abstract: A process for preparing a thermoplastic resin composition capable of giving delustered articles which comprises blending (A) 10 to 30 parts by weight of a graft-copolymer and (B) 90 to 70 parts by weight of a copolymer, the total amount of the components (A) and (B) being 100 parts by weight;said graft-copolymer (A) being prepared by adding a nonionic or cationic polymer coagulant to (1) 70 to 95 parts by weight of diene rubber having a diene content of more than 50% by weight to give a coagulated diene rubber, and then graft-polymerizing (2) 30 to 5 parts by weight of at least one monomer selected from the group consisting a vinyl aromatic monomer, a vinyl cyanide and a methacrylic acid ester onto the coagulated diene rubber, the total amount of the components (1) and (2) being 100 parts by weight; said polymer (B) being prepared by polymerizing at least one monomer selected from the group consisting of an aromatic vinyl monomer, a vinyl cyanide, an acrylic acid ester and a methacrylic acid ester.
    Type: Grant
    Filed: November 7, 1985
    Date of Patent: September 15, 1987
    Assignee: Kanegaguchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Osamu Kakimoto, Fumiya Nagoshi
  • Patent number: 4678829
    Abstract: A metal container coating composition comprising a crosslinking resin and an aqueous polyvinyl alcohol/vinyl chloride-ethylene copolymer emulsion, the copolymer having a Tg from 0.degree. to 50.degree. C., about 65 to 90 wt. % vinyl chloride, about 5 to 35 wt. % ethylene, 0 to 10 wt. % olefinically unsaturated copolymerizable monomer and prepared by emulsion polymerization of vinyl chloride, ethylene and, optionally, an olefinically unsaturated comonomer in the presence of 3 to 15 wt. % polyvinyl alcohol as the dispersing agent.Also a method for preparing such stable vinyl chloride based resin emulsions comprising(a) forming an aqueous emulsion reaction mixture containing substantially all the polyvinyl alcohol and a portion, preferably at least 5%, of the total vinyl chloride monomer,(b) pressurizing the reaction mixture with an ethylene pressure sufficient to provide the copolymer with a 5 to 35 wt.
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: July 7, 1987
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John G. Iacoviello
  • Patent number: 4673702
    Abstract: A method for preparing a stable vinyl chloride based resin emulsion which comprises a copolymer colloidally dispersed in an aqueous medium, the copolymer having a Tg from 0.degree. to 50.degree. C.
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: June 16, 1987
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John G. Iacoviello
  • Patent number: 4638025
    Abstract: A colored opacified plastic material containing an organic binder, at least one pigment, a hydrophilic polymerizable plastic material and a cross linking agent is disclosed together with a method of making the same.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: January 20, 1987
    Assignee: Color Optics, Ltd.
    Inventor: Ari Fuhrman
  • Patent number: 4616058
    Abstract: A process for preparing a stable dispersion in an aqueous medium of particles of polymer, said process comprising the steps of:(a) reacting at least one radically polymerizable monomer in an organic liquid in the presence of a dispersion stabilizer for the particles to form particles of polymer insoluble in said organic liquid and water, said stabilizer being a resin having in each of its molecules on the average at least 0.3 unit of a polymerizable double bond and a functional group that can be neutralized with an acid or a base, said resin being capable of being emulsifiably dispersed or dissolved in an aqueous medium by neutralization;(b) neutralizing with acids or bases the functional group of the resin as a dispersion stabilizer; and(c) replacing the organic liquid of the resulting dispersion of polymer particles with an aqueous medium.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: October 7, 1986
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Motoshi Yabuta, Yoshio Sasaki, Mototaka Iihashi
  • Patent number: 4563431
    Abstract: A biologically active latex conjugate prepared by the acidification of latex particles of a core/shell polymer having acetal groups in the shell, whereby said acetal groups are converted to aldehyde groups, and then bonding a biologically active substance having an amino group to said aldehyde groups by reductive amination.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: January 7, 1986
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans-Erwin Pauly, Wolfgang Kapmeyer, Ulrich Seitz
  • Patent number: 4525499
    Abstract: A non-aqueous dispersion type resin composition comprising (I) a non-polar or slightly polar aliphatic hydrocarbon solvent as a dispersion medium, and (II) particles stably dispersed in the dispersion medium, wherein each of said particles is composed of:(A) from 20 to 70% by weight of a disperse particle made of (a) a polyester-modified vinyl copolymer containing a hydroxyl group, (b) a vinyl copolymer containing a hydroxyl group or (c) a vinyl ester-modified vinyl copolymer containing a hydroxyl group, and(B) from 80 to 30% by weight of a vinyl resin dispersion stabilizer surrounding the disperse particle as a protective layer, which has a component compatible with the disperse particle or is chemically bonded thereto and which is solvated by the dispersion medium, said dispersion stabilizer being composed of (i) an N-alkoxymethylated monomer of an .alpha., .beta.-monoethylenically unsaturated carboxylic acid amide and (ii) an .alpha., .beta.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: June 25, 1985
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Masaaki Hayashi, Hiroharu Sasaki
  • Patent number: 4518724
    Abstract: An aqueous coating composition which comprises (A) at least one aqueous resin selected from acryl, alkyd, polyester, acryl-modified alkyd and acryl-modified polyester resins, (B) at least one component selected from water-insoluble resinous particles having an average grain diameter of 0.3 to 6.mu., obtained by a polymerization of ethylenically unsaturated compound(s), and (C) optional additives, the weight ratio of said (A) to (B) (in solid) being 99:1.about.15:85. This aqueous paint is especially useful as a top-coat.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: May 21, 1985
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Teruaki Kuwajima, Katsuaki Kida, Shinichi Ishikura
  • Patent number: 4506057
    Abstract: A phosphorus modified latex composition useful in the coating of substrates with inorganic fillers. A latex particle having phosphorus groups intimately bound to the particle's surface formed by the emulsion polymerization of a latex with a phosphorus compound. Also a method of preparing a composite sheet and a paper coating latex with the phosphorus modified latex is provided.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: March 19, 1985
    Assignee: The Dow Chemical Company
    Inventors: Bettye W. Greene, Sun-Lin Chen
  • Patent number: 4504618
    Abstract: This invention relates to stable aqueous dispersions of film-forming addition polymer.Novel aqueous dispersions comprise polymer which is a copolymer of amphipathic and non-amphipathic monomer. The amphipathic monomer has an HLB value of at least 8, the hydrophilic component thereof is non-ionic, and the lipophilic component has a molecular weight of at least 100, comprises at least one ethylenic double bond but has no acrylyl or methacrylyl structure. The polymer comprises up to 80% by weight of amphipathic monomer.The dispersions are useful as components of such compositions as surface coatings and adhesives.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: March 12, 1985
    Assignee: Dulux Australia Ltd.
    Inventors: Antony J. Irvine, Bruce Leary, Christopher H. Such
  • Patent number: 4421660
    Abstract: Colloidal size particles of an inorganic solid such as magnetic iron oxide or titanium dioxide are encapsulated in a hydrophobic addition polymer such as a polymer of styrene by a polymerization process wherein a water-immiscible (hydrophobic) monomer is dispersed in an aqueous colloidal dispersion of the inorganic particles and subjected to conditions of emulsion polymerization. The resulting encapsulated particles are usefully employed as catalysts, toners, pigments and diagnostic latexes that have magnetic characteristics.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: December 20, 1983
    Assignee: The Dow Chemical Company
    Inventor: Jitka Solc nee Hajna
  • Patent number: 4413073
    Abstract: This invention relates to the preparation of stable aqueous dispersions of particles of film-forming polymer, the particles comprising at least one pre-formed polymer and at least one polymer formed in situ ("multi-polymer particles").The inadequate stability exhibited by many previously known film-forming systems based on multi-polymer particles, especially in the presence of co-solvents, may be overcome by preparing the particles in the presence of a stabilizing compound which is an amphipathic compound with a hydrophilic-lipophilic balance (HLB) value of at least 8 and whose lipophilic portion comprises at least one ethylenic double bond.The dispersions of this invention are useful as the film-forming components of coating compositions.
    Type: Grant
    Filed: June 29, 1982
    Date of Patent: November 1, 1983
    Assignee: ICI Australia Limited
    Inventors: David V. Gibson, Rodney W. Parr, John E. Swalwell
  • Patent number: 4379868
    Abstract: A new method for preparation of hydrophilic fillers has been found, based on high-molecular weight compounds insoluble in water, obtained by the copolymerization of unsaturated monomers, soluble and insoluble in water, either in the form of an aqueous emulsion containing 10-70% by wt. of fillers, or in the dry powdered form having the required particle size, which in the final application are able to sorb reversibly water vapor, and are particularly suited for producing synthetic leather and similar materials.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: April 12, 1983
    Assignee: Ceskoslovenska akademie ved
    Inventors: Frantisek Juracka, Slavko Hudecek
  • Patent number: 4370389
    Abstract: A coated paper having a high paper gloss and a surface strength sufficient enough for practical purposes is obtained by coating a base paper sheet with an aqueous coating composition comprising a paper-coating pigment and a latex of styrene-butadiene copolymer or modified styrene-butadiene copolymer, the styrene block of which includes 8 to 40 monomeric units, drying the wet coated sheet, and subjecting the coated side to hot calendering treatment.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: January 25, 1983
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Toshimasa Ogura, Yasunosuke Sakai
  • Patent number: 4352902
    Abstract: An emulsion composition which is the product of emulsion polymerization of a mixture of at least one radical-polymerizable unsaturated monomer and at least one cellulose derivative in the presence of a water-soluble resin having a graft-polymerizable unsaturated group in the side chain.
    Type: Grant
    Filed: January 7, 1981
    Date of Patent: October 5, 1982
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Yasuharu Nakayama, Hiroshi Iwai, Hajime Sukejima