Patents Examined by Jeffrey T. Smith
  • Patent number: 6011114
    Abstract: An aqueous emulsion which crosslinks by a Michael addition reaction, yielding a crosslinked silicon modified organic composition upon removal of water has been prepared. The aqueous emulsion comprises the product formed by mixing a polymer containing at least two Michael acceptor groups per polymer molecule, water, a surfactant and an effective amount of a crosslinker containing sufficient reactive hydrogens of a Michael donor per crosslinker molecule or a precursor thereto. In order to obtain a crosslinked silicon modified organic composition upon the removal of water, the polymer or the crosslinker must contain at least one silicon atom. The invention also describes a method for making these emulsions.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: January 4, 2000
    Assignee: Dow Corning Corporation
    Inventors: Donald Taylor Liles, David Logan Murray
  • Patent number: 5998556
    Abstract: N-Cyclohexylmaleimide having a cyclohexylaminosuccinic anhydride content of 0.001 to 1 wt. % is used as the main raw material for the production of heat-resistant resins. The resins are produced by a process of copolymerizing the above material with at least one monomer copolymerizable therewith which is characterized by the use of a monomer having a low yellowness, the addition of a compound which can inhibit the evaporation of the non-radical compounds contained in the monomer through reactions, the addition of an antioxidant, the use of a solvent containing alcohol, or the presence of a non-radical-polymerizable acid anhydride or carboxylic acid. The heat-resistant resins produced by the use of the above raw material or the above process are excellent in transparency, i.e., less discolorable, even when an increased amount of N-cyclohexylmaleimide is used for the purpose of imparting more excellent heat resistance.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: December 7, 1999
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Teruyuki Kanto, Kenichi Ueda, Kazumi Fujioka, Kazuo Kishino
  • Patent number: 5988455
    Abstract: The present invention relates to water-based, latex aerosol paint compositions.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: November 23, 1999
    Assignee: The Sherwin-Williams Company
    Inventors: Paul D. Pearson, Patricia L. Redding
  • Patent number: 5986029
    Abstract: The invention relates to a new catalyst composition which is suitable for the polymerization of an olefin and which comprises a reduced transition metal complex and a co-catalyst. The invention is characterized in that the transition metal complex consists of a reduced transition metal, chosen from groups 4-6 of the Periodic Table of the Elements, with a multidentate monoanionic ligand and with two monoanionic ligands. In particular the reduced transition metal is titanium (Ti).
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: November 16, 1999
    Assignee: DSM N.V.
    Inventors: Johannes A. M. van Beek, Gerardus H. J. van Doremaele, Gerardus J. M. Gruter, Henricus J. Arts, Guillaume H. M. R. Eggels
  • Patent number: 5981669
    Abstract: Low water silicone-containing elastomers are based on a hydroxy- or amino-terminated prepolymer derived from an ethylenically unsaturated silicon-containing monomer, and at least one monomer reactive with hydroxyl- or amino-functional radicals of the prepolymer. The elastomers are especially useful as contact lens materials.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: November 9, 1999
    Assignee: Bausch & Lomb Incorporated
    Inventors: Paul L. Valint, Jr., Yu-Chin Lai, Edmond T. Quinn, Daniel M. Ammon, Jr.
  • Patent number: 5973094
    Abstract: To provide a polymer comprising as a structural unit a monomer unit containing a hydroxy group or other hydrophilic radical and other functional group in the molecule which is useful in medical, cosmetic and electric industries.A polymer comprising as a structural unit a monomer unit shown by the general formfula [1] ##STR1## (wherein R.sup.1 and R.sup.2 are, independently, a hydrogen atom or a halogen atom, R.sup.3 is a hydrophilic radical and R.sup.4 is a cyano group or a carboxyl group which may he esterified).
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: October 26, 1999
    Assignee: Wako Pure Chemical Industries, Ltd.
    Inventors: Fumiyoshi Urano, Motoshige Sumino, Tsuneaki Maesawa
  • Patent number: 5965676
    Abstract: The present invention provides a polymerizable monomer composition particle and a resin particle, both of which display a narrow particle diameter distribution. A process for producing a resin particle comprises the steps of: passing two liquids through a static type in-line mixer having a liquid-dividing mechanism standing in a static state, wherein the two liquids are formable into two phases including one of the two liquids as a dispersing phase component and the other as a continuous phase component; then passing the two liquids through a high speed shearing type dispersing machine having a liquid-shearing mechanism which revolves at a high speed, thus dispersing a fine liquid drop of the dispersing phase component into the continuous phase component; and forming a resin particle from the resultant liquid drop.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: October 12, 1999
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kazuhiro Anan, Ritsuo Kitada, Mitsuo Kushino
  • Patent number: 5959057
    Abstract: There is disclosed a polyorganosiloxane and a method for the preparation thereof, said polyorganosiloxane having the formula ##STR1## in which R is independently selected from substituted or unsubstituted monovalent hydrocarbon groups, m is an integer having a value of 0 to 500, n is an integer having a value of 0 to 500 and X is selected from a substituted or an unsubstituted monovalent hydrocarbon group or a hindered phenol group which is linked through either a carboxylate ester or an amide moiety, with the proviso that at least one of the X groups is said hindered phenol group.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: September 28, 1999
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Haruhiko Furukawa, Koji Nakanishi
  • Patent number: 5929182
    Abstract: Novel sulfur, oxygen and nitrogen-containing heterocyclic monomers are provided which may be used to produce conductive graft copolymers.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: July 27, 1999
    Assignee: Adhesives Research, Inc.
    Inventor: Michael J. Zajaczkowski
  • Patent number: 5925714
    Abstract: Improved water soluble vinyl addition polymers for use as thickening and flocculating agents in water purification treatment, paper manufacture and waste water treatment are prepared using alkoxylated castor oil as an activation release agent. The release agent is biodegradable thereby making the overall product process more environmentally friendly.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: July 20, 1999
    Assignee: SNF S.A.
    Inventors: Eric H. Larson, Manilal Dahanayake, William R. Busler
  • Patent number: 5910552
    Abstract: A novel fluorine-containing copolymer elastomer having bromine groups as cross-linkable groups, which comprises about 45 to about 80% by mole of tetrafluoroethylene, about 50 to about 20% by mole of a perfluoro(vinylether) represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2).sub.2 (OCF.sub.2)nOCF.sub.3where n is an integer of 1 to 5, and about 0.2 to about 5% by mole of a bromine-containing unsaturated monomer compound, sum total being 100% by mole, gives vulcanization products having distinguished resistances to chemicals, low temperature and heat.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: June 8, 1999
    Assignee: Nippon Mektron, Limited
    Inventors: Satoru Saito, Haruyoshi Tatsu
  • Patent number: 5908906
    Abstract: Monomeric units useful in reducing the modulus of hydrogels are disclosed. Silicone hydrogels including the subject monomeric units are especially useful in the formation of biomedical articles such as silicone hydrogel contact lenses. ##STR1## wherein: A is an activated unsaturated group;R and D independently are alkyl, alkylene or haloalkyl groups having 1 to 10 carbon atoms wherein said carbon atoms may include ether linkages therebetween;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from: alkyl or haloalkyl groups wherein ether linkages may be included between carbon atoms; siloxane groups, and carbocyclic ring groups having from 6 to 18 carbon atoms;m is an integer from 1 to 500; n is an integer from 1 to 20; x and y are 0 or 1;z is 1 or 2; and x+y+z=3;so long as at least one of R.sub.1 or R.sub.2 is an alkyl group having from 1 to 10 carbon atoms.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: June 1, 1999
    Assignee: Bausch & Lomb Incorporated
    Inventors: Jay F. Kunzler, Richard M. Ozark
  • Patent number: 5900517
    Abstract: Cyclopentadienyl derivatives are described having general formula (I) ##STR1## where R, R.sub.1, R.sub.2, R.sub.4, equivalent to or different from one another, are selected from: --H, alkyl radicals having a number of carbon atoms from 1 to 5, cycloalkyl radicals having a number of carbon atoms from 5 to 8, aryl and alkylaryl radicals having a number of carbon atoms from 6 to 8, aralkyl radicals having a number of carbon atoms from 7 to 9; n is an integer from 2 to 18; with the proviso that the number of R different from H does not exceed 2; with the exclusion of the compound having n=3, R.dbd.R.sub.1 .dbd.R.sub.2 .dbd.R.sub.4 .dbd.H. The invention a-so describes the process for the preparation of the above-mentioned cyclopentadienyl derivatives.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: May 4, 1999
    Assignee: Enichem S.p.A.
    Inventors: Paolo Biagini, Roberto Santi, Giampiero Borsotti, Gabriele Lugli, Viviano Banzi
  • Patent number: 5891971
    Abstract: A process for the preparation of a resin comprising:heating a mixture of at least one free radical polymerizable monomer, a free radical initiator compound, a stable free radical compound, and a reducing agent.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: April 6, 1999
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Marion H. Quinlan, Michael K. Georges, H. Bruce Goodbrand
  • Patent number: 5874495
    Abstract: Novel aqueous thickener or thixotropic polymers are prepared by the copolymerization of (A) about 15-60 weight percent of a C.sub.3 -C.sub.8 alpha, beta-ethylenically unsaturated carboxylic acid monomer, preferably acrylic or methacrylic acid or a mixture thereof with itaconic or fumaric acid, (B) about 15-80 weight percent of a nonionic copolymerizable C.sub.2 -C.sub.12 alpha, beta-ethylenically unsaturated monomer, preferably a monovinyl ester such as ethyl acrylate or a mixture thereof with styrene, acrylonitrile, vinyl chloride or vinyl acetate, and (C) about 1-30 weight percent of a new and novel nonionic ethylenically unsaturated nonionic biphillic monomer such as tristyrylpoly(ethyleneoxy).sub.x methyl acrylate, to provide a stable aqueous colloidal dispersion at an acid pH lower than about 5.0 but becoming an effective thickener for aqueous systems upon adjustment to a pH of about 5.5-10.5 or higher. These polymers adjusted to a pH of about 5.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 23, 1999
    Assignee: Rhodia Inc.
    Inventor: Fred Robinson
  • Patent number: 5874510
    Abstract: A process for making crosslinked polymers of maleic anhydride and methyl vinyl ether is described. The process is characterized by precharging methyl vinyl ether, partially or totally, in isopropyl acetate, and a crosslinker, and then continuously feeding molten maleic anhydride and methyl vinyl ether into the thus-precharged reactor. The monomer mixture then is polymerized at a temperature of about C. The reaction product is a pumpable, homogeneous suspension of the crosslinked copolymer at a solids level of about 30-50%, which is recoverable in high yield upon removal of the solvent and filtering the suspension.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: February 23, 1999
    Assignee: ISP Investments Inc.
    Inventors: Yoon Tae Kwak, Stephen L. Kopolow
  • Patent number: 5872297
    Abstract: A novel ethylenically-unsaturated 1,3-diketoamide functional compound, polymers comprised thereof, and latex formulations containing polymeric ingredients having 1,3-diketoamide functional pendant moieties are disclosed. The 1,3-diketoamide functional pendant moieties have excellent hydrolytic stability.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: February 16, 1999
    Assignee: S. C. Johnson Commercial Markets, Inc.
    Inventor: David L. Trumbo
  • Patent number: 5872197
    Abstract: Systems for initiating the polymerization of acrylic monomers comprising (1) organoborane amine complexes and (2) bireactive decomplexers preferably comprising at least one free-radically polymerizable group and at least one amine-reactive group in the same molecule. The decomplexer is capable of forming a covalent bond with both the acrylic monomers and amine complex, resulting in a reduced level of mobile constituents. Furthermore, when the organoborane amine complex of the initiator system comprises a polyamine compound, polymerized acrylic compositions having improved solvent resistance are advantageously provided.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: February 16, 1999
    Assignee: Minnesota Mining & Manufacturing Company
    Inventor: E. John Deviny
  • Patent number: 5869564
    Abstract: The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier; a pigment; and a copolymer comprising a hydrophilic segment having an acidic function group, and a hydrophobic segment having a hydrolytically stable siloxyl substituent.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: February 9, 1999
    Assignee: International Business Machines Corporation
    Inventors: Bradley Leonard Beach, Arthur Fred Diaz, Seong-Jin Kim, Dennis Richard McKean, Anna Marie Pearson, Jing Xiao Sun, Ajay Kanubhai Suthar, Richard Barber Watkins
  • Patent number: 5866711
    Abstract: Fluorinated vinyl ethers having cyanate or carbamate groups are useful as monomers in making fluoropolymers having functional sites.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: February 2, 1999
    Assignee: E. I. du pont de Nemours and Company
    Inventors: Ming-Hong Hung, Paul Douglas Brothers, Dewey Lynn Kerbow