Patents Examined by Kelechi Egwim
  • Patent number: 6538057
    Abstract: Adhesives comprising: a) from 5.0 to 95.0% by weight of an adhesive dispersion having a viscosity in the range from 2000 to 10,000 mpPa·s, which comprises (a1) an aqueous polymer dispersion which is obtainable by free-radical polymerization of a mixture M which comprises at least one ethylenically unsaturated monomer A to give a polymer P in the presence of at least one protective colloid-based on a water-soluble prepolymer which comprises at least one water-soluble monomer B, and further additives if desired, (a2) if desired, a base selected from the group consisting of alkali metal.hydroxides, ammonia and volatile organic amines, (a3) if desired, a completely water-miscible organic solvent, and, further additives; (b) from 0 to 90.0% by weight of a polysaccharide and/or a protein and/or a protein degradation product; (c) from 0 to 95.0% by weight of at least one filler; (d) from 0 to 10.0% by weight of at least one emulsifier; (e) from 0 to 30.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: March 25, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerald Wildburg, Dieter Urban, Georg Langhauser, Karl-Heinz Schumacher, Oliver Hartz, Eckehardt Wistuba
  • Patent number: 6534577
    Abstract: PVC-containing material with a citrate, whose alcohol component contains 2 to 12 carbon atoms and in which the hydroxyl group of the citrate is not esterified.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: March 18, 2003
    Assignee: era Beschichtung GmbH & Co.
    Inventor: Maik Johannes Keller
  • Patent number: 6521732
    Abstract: A (meth)acrylate terpolymer comprising 1-30% of total terpolymer weight epoxy-functional (meth)acrylate monomer units, 1-98% of total terpolymer weight tackifier (meth)acrylate monomer units, and 1-98% of total terpolymer weight compatibilizing (meth)acrylate monomer units, wherein the compatibilizing (meth)acrylate monomer unit is a (meth)acrylic ester derived from an aromatic alcohol containing 6-14 carbon atoms. Also provided are self-fixturing adhesive compositions comprising the acrylate terpolymer of the present invention and methods of their use.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: February 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Mario Alberto Perez, Ahmed Salih Abuelyaman, Ikuko Ebihara, Lani S. Kangas
  • Patent number: 6515042
    Abstract: Aqueous self-crosslinking copolymer dispersions ABC obtainable by free-radically initiated copolymerization in the first stage of a monomer mixture A comprising olefinically unsaturated monomers A1 having carbonyl groups, unsaturated carboxylic acids or monoesters of unsaturated dicarboxylic acids A2, monomers A3 selected from vinylaromatic compounds, n-butyl methacrylate and also alkyl esters of unsaturated carboxylic acids or dialkyl esters of unsaturated dicarboxylic acids, esters A4 selected from alkyl esters of unsaturated carboxylic acids of dialkyl esters of unsaturated dicarboxylic acids, and other free-radically polymerizable monomers A5, and subsequent addition of a second monomer mixture B and further polymerization in the second stage, the mixture B comprising olefinically unsaturated monomers B1 corresponding to A1, esters B2 corresponding to A4, and monomers B3 corresponding to A5, and subsequently adding compounds C having hydrazine or hydrazide groups.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: February 4, 2003
    Assignee: Solutia Austria GmbH
    Inventors: Ingo Kriessmann, Rami-Raimund Awad, Hannelore Gsöll, Bernhard Hirschmann, Karl Rossmann
  • Patent number: 6515055
    Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: February 4, 2003
    Assignees: Bridgestone Corporation, Otsuka Chemical Co., Ltd.
    Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
  • Patent number: 6500508
    Abstract: A flame-retardant resin composition for insulated wires, shielded wires and insulating tubes which are used in the field requiring high-frequency current transmission, for example, in the field of high-density wiring of internal circuits in electronic appliances. The composition comprises (a) a thermoplastic polyolefinic resin having a density of smaller than 0.89 g/cm3, which is prepared by copolymerizing ethylene and a non-polar &agr;-olefin in the presence of a single-site metallocene catalyst, (b) a halogen-containing flame retardant, and (c) zinc oxide. After crosslinking, the composition is used in forming an insulating coating for insulated wires and shielded wires, and in forming insulating tubes.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: December 31, 2002
    Assignee: Sumitomo Electric Fine Polymer, Inc.
    Inventors: Hiroshi Hayami, Yumi Kawabata, Satoshi Ebina
  • Patent number: 6482885
    Abstract: The present invention relates to coating compositions comprising a mixture of at least two aqueous, anionic polyurethane polyurea dispersions A and B, wherein dispersion A as a dry film has a TG in the range from −30° C., to −45° and dispersion B as a dry film has a first TG in the range from −30° C. to −45° C. and a second TG in the range from +45° C. to +60° C., and the mixture of A and B as a dry film has only one TG in the range from −30° C. to −45° C.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: November 19, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hanns-Peter Müller, Horst Gruttmann, Joachim Petzoldt, Heino Müller, Jürgen Meixner, Gerald Kurek
  • Patent number: 6472486
    Abstract: Controlled stable free radical emulsion polymerization processes employ nitroxide control agents having an alpha carbon atom bearing a destabilizing substituent such as hydrogen. The emulsion polymerizations have living characteristics, including the re-initiation of polymer chains, and provide a high degree of control over molecular weight, particle size, polydispersity and polymer composition and architecture. The processes are useful for the preparation of polymer emulsions, including block copolymers, star and graft copolymers, telechelics and macromonomers from a wide range of monomers.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: October 29, 2002
    Assignee: Symyx Technologies, Inc.
    Inventors: Gerrit Klaerner, Adam Safir, Ralph B. Nielsen, Bernd Jandeleit, Peter Huefner
  • Patent number: 6462114
    Abstract: A process for forming a microgel which comprises a crosslinked core and a multiplicity of linear polymeric arms attached to the core, wherein the process comprises (a) first forming a halogen atom terminated prepolymer with a weight average molecular weight from 1,000 to 25,000 by polymerizing monoethylenically unsaturated monomers in the presence of an organic sulfonyl halide, an organic complexing agent and a transition metal (i.e., Cu, Ru, Ni, Re, Pd, Fe, or Rh); and (b) subsequently polymerizing the prepolymer with a mixture of monoethylenically unsaturated monomers and 0.5 to 60 mole percent, based on the total moles of monomer and prepolymer, of multi-olefinic polymerizable monomers to form a microgel with a weight average molecular weight of 10,000 to 100,000,000 and crosslinked core.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: October 8, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
  • Patent number: 6441082
    Abstract: Redispersible polymer powders are prepared by emulsion polymerization of ethylenical, unsaturated monomers in the presence of a protective colloidal stabilizer containing 20 to 95 weight percent of polymerized monomers containing sulfonic acid or sulfonate groups, 5 to 80 weight percent of polymerized monomers containing amide groups or hydroxylalkyl groups, and up to 5 weight percent of polymerized monomers which are hydrophobic, water-insoluble ethylenically unsaturated compounds. The redispersible polymers are suitable for use in construction materials and coatings, and exhibit higher water resistance than similar polymers stabilized with polyvinyl alcohol as a colloidal stabilizer.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: August 27, 2002
    Assignee: Wacker-Chemie GmbH
    Inventors: Hans-Peter Weitzel, Reiner Figge
  • Patent number: 6414080
    Abstract: Disclosed herein is an inverse emulsion polymer composition comprising a copolymer or copolymer salt of N,N,-dimethylacrylamide and 2-acrylamido-2-methylpropane sulfonic acid or acid salts thereof, having a Brookfield viscosity of less than 20,000 Cps at 23° C. and an active polymer concentration of about 25 to about 75 weight percent. The inverse emulsion polymer composition is in a hydrocarbon with a primary surfactant and optionally contains water.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: July 2, 2002
    Assignee: Calgon Corporation
    Inventors: Randy J. Loeffler, Shih-Ruey T. Chen, Kevin W. Frederick, James E. Rak
  • Patent number: 6413306
    Abstract: A pigment dispersion useful for forming coating compositions containing dispersed pigment, a non-aqueous carrier liquid and an ABC-block polymer dispersant (binder); wherein the ABC block polymer has a number average molecular weight of about 5,000-20,000 and contains a polymeric A segment, a polymeric B segment and a polymeric C segment; wherein the polymeric A segment of the block polymer is of polymerized monomers selected from the following group: alkyl (meth)acrylate monomers having 1-12 carbon atoms in the alkyl group, aryl (meth)acrylate monomers, cyclo alkyl (meth)acrylate monomers or mixtures of any of the above; the polymeric B segment of the block polymer is of polymerized alkyl amino alkyl (meth)acrylate monomers having 1-4 carbon atoms in the alkyl group quaternized with an alkylating agent; and the polymeric C segment of the block polymer is of polymerized monomers of hydroxy alkyl (meth)acrylate having 1-4 carbon atoms in the alkyl group and monomers selected from the following group: alkyl
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: July 2, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Daniel C. Kraiter, Beatriz E. Rodriguez-Douglas
  • Patent number: 6414061
    Abstract: This invention describes novel blocked mercaptosilanes wherein the hydrogen atom of the mercaptan functionality has been substituted. The invention includes methods of preparation for the blocked mercaptosilicon compounds as well as their use in filled rubbers. The blocked mercaptosilanes described are unique in that they allow the mixing of fillers with organic polymers to proceed while remaining inert toward coupling to the polymer. The coupling reactions of these blocked mercaptosilicon compounds are triggered by addition of an appropriate deblocking agent.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: July 2, 2002
    Assignee: Crompton Corporation
    Inventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
  • Patent number: 6409822
    Abstract: An aqueous suspension is provided including a mixture of at least one aqueous suspension of precipitated silica and of at least one latex, in which the aqueous suspension of precipitated silica has a solids content of between 10 and 40% by weight, has a viscosity lower than 4×10−2 Pa s at a shear of 50 s−1 and, after centrifuging at 7500 revolutions per minute for 30 minutes, produces a supernatant containing more than 50% of the weight of the silica initially in suspension. This suspension can be employed in compositions based on an inorganic binder and in concrete compositions.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: June 25, 2002
    Assignee: Rhodia Chimie
    Inventors: Evelyne Prat, Laurent Frouin
  • Patent number: 6399697
    Abstract: Process oil which satisfies requirements that a content of a polycyclic aromatic compound is less than 3% by weight, a content of an aromatic hydrocarbon is 18% by weight or more, a content of a polar compound is between 11 and 25% by weight, a kinematic viscosity at 100° C. is between 10 and 70 mm2/s, and a flash point is 210° C. or more.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: June 4, 2002
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masami Takasaki, Meishi Tanaka, Hisao Anzai, Masashi Nakamura, Chisato Endo
  • Patent number: 6391952
    Abstract: A water-redispersible powder composition comprising: at least a water-soluble film forming polymer, the polymer being prepared from at least an ethylenically unsaturated monomer; and at least a naphthalenesulphonate.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: May 21, 2002
    Assignee: Rhodia Chimie
    Inventors: William Bett, Jean-Francois Colombet
  • Patent number: 6387997
    Abstract: An aqueous dispersion including polymeric microparticles which are prepared in a medium substantially free of organic solvent from a mixture of one or more reaction products of polymerizable, ethylenically unsaturated monomers, and one or more reactive organopolysiloxanes is provided. Pigmented film-forming compositions, curable compositions and topcoats of multi-component composite coating composition containing the above-described dispersions also are provided. The substantially solvent-free film-forming compositions of the invention are storage stable at room temperature and provide coatings with excellent application properties such as sag resistance and tack-free overspray, and excellent performance properties such as hardness and scratch resistance. The film-forming compositions are suitable for wet-on-wet application over a base coat with little or no mudcracking.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: May 14, 2002
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Mary E. Grolemund, Masayuki Nakajima, Thomas R. Hockswender, Kurt G. Olson
  • Patent number: 6380298
    Abstract: A coating composition for forming a water-resistant coating on fiber-reinforced articles such as rods or cables. The composition comprises an aqueous solution of a superabsorbent water-soluble polymer, a viscosity modifying agent, and optionally a lubricant. the coating formed by applying the composition effectively prevents the treated surface from water-permeation damage by absorbing water that contacts the layer containing the superabsorbent component.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: April 30, 2002
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Martin Charles Flautt, James Robert Priest, David V. Stotler, Thomas P. Hager
  • Patent number: 6376575
    Abstract: An aqueous coating composition comprising a mixture of 90 to 99 wt. % of a filmforming binder composition comprising an alkali non-swellable core-shell addition polymer dispersion (I), and 1-10 wt. % of a rheology modifying addition polymer dispersion (II). It is required that the total amount of (meth)acrylic acid in 100 parts of the total addition polymer (I) is less than 1.75 wt. %. The aqueous coating composition of the present invention can be advantageously used as a base coat in a base coat/clear coat system. This use shows a decrease in strike-in effect compared to previous known base coat/clear coat systems.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 23, 2002
    Assignee: Akzo Nobel N.V.
    Inventors: Roelof Buter, Andreas Henricus J. Roelofs
  • Patent number: 6372828
    Abstract: Flame retardant compositions useful as insulation for 150° C.-rated wire and cable applications are provided. The compositions of the invention utilize an ethylene-alkyl acrylate copolymer base resin with a two-component stabilizer package consisting of a zinc salt of a mercaptobenzimidazole and an aromatic secondary amine compound. Also, included to achieve the requisite flame retardance, crosslinkability and physical properties are a brominated flame retardant, antimony trioxide, a hydrated inorganic filler and a chemical crosslinking agent.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: April 16, 2002
    Assignee: Equistar Chemicals, LP
    Inventor: Lester Y. Lee