Patents Examined by Arthur H. Koeckert
  • Ultraviolet-curable coatings for optical glass fibers having improved adhesion
    Patent number: 4849462
    Abstract: Optical glass fiber having its glass surface adherently coated with an ultraviolet-cured coating of a liquid ultraviolet-curable coating composition is disclosed in which the composition comprises an ultraviolet-curable polymeric polyacrylate, a photoinitiator to render the composition curable with ultraviolet light, and from about 0.5% to about 5% of the coating composition of a polyalkoxy silane containing an organic substituent carrying a single mercaptyl hydrogen atom capable of reacting with acrylate unsaturation by Michael adduction. These compositions provide improved adhesion to the glass surface of the optical fiber which is well retained after exposure to high humidity atmospheres.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: July 18, 1989
    Assignee: DeSoto, Inc.
    Inventor: Timothy E. Bishop
  • Light curing compositions for dental restoration
    Patent number: 4843110
    Abstract: A light curing composition for dental restoration comprises (a) a polymerizable compound containing at least one ethylenically unsaturated double-bond, (b) at least one photo-polymerization initiator selected from ketal base compounds defined hereinafter, (c) at least one photopolymerization initiator selected from thioxanthone base compounds defined hereinafter, (d) a reducing agent and (e) a filler.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: June 27, 1989
    Assignee: G-C Dental Industrial Corporation
    Inventors: Takao Kubota, Tetsuro Sakuma, Ryoji Nakazato
  • Radiation process for preparation of electrophoresis gel material
    Patent number: 4840756
    Abstract: Describes a process for controlling the polymerization and cross-linked density of electrophoretic gel products useful for separation of bioorganic molecules, which process does not use initiators common to processes of the art. Electron beam polymerized gels afford the desired advantages of being ultra thin and having a high electrophoretic resolution with programmable porosity profiles.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: June 20, 1989
    Assignee: E. I. Du Pont Nemours and Company
    Inventors: Richard C. Ebersole, Robert P. Foss
  • Blends, of cyclic vinyl ether containing compounds and epoxides
    Patent number: 4840978
    Abstract: Described herein are compositions suitable for photocopolymerization comprising a cyclic vinyl ether containing compound and an epoxide. These compositions can be cured to give coatings with improved flexibility and impact resistant properties.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: June 20, 1989
    Assignee: Union Carbide Corporation
    Inventors: Joseph V. Koleske, George T. Kwiatkowski
  • Light curable dental pit and fissure sealant
    Patent number: 4839401
    Abstract: A light curable pit and fissure sealant composition comprises 2,2-propane-bis [3-(4-phenoxy)-1,2-dihydroxy-propane-1- methacrylate] and triethylene glycol dimethacrylate in a 55:45 weight ratio, a polymerization initiator, titanium dioxide as an opaquing agent, and DEA-EMA of at least 95 percent purity as the polymerization accelerator. Optionally, up to 50% filler can be used.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: June 13, 1989
    Assignee: Jeneric/Pentron, Inc.
    Inventor: Samuel Waknine
  • Curable resin composition with a thiuram and a copper compound as storage stabilizer
    Patent number: 4837280
    Abstract: A thermosetting resin composition of highly satisfactory storage stability comprises 100 parts by weight of a thermosetting resin composition, 0.0001 to 2.0 parts by weight of a thiuram compound possessing at least one atomic group represented by the following formula: ##STR1## wherein p stands for an integer in the range of 1 to 8, and 0.00001 to 0.1 part by weight (as copper metal) of a copper-containing compound.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: June 6, 1989
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Toshio Awaji, Kenichi Ueda, Daisuke Atobe
  • Photopolymerizable epoxy resin composition
    Patent number: 4835193
    Abstract: A photopolymerizable epoxy resin composition comprising (a) an epoxy resin and (b) a heteropoly-acid aromatic sulfonium salt or a heteropoly-acid aromatic iodonium salt as a photocuring catalyst exhibits rapid photopolymerization, with the cured product being great in hardness, the corrosive action being weak, and the electrical properties being excellent. The industrial utility of the composition is therefore substantial.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: May 30, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shuzi Hayase, Yasunobu Onishi, Shuichi Suzuki, Moriyasu Wada
  • Acid-curable composition containing a masked curing catalyst, and a process for its preparation
    Patent number: 4831177
    Abstract: Compounds of formula X ##STR1## in which R.sub.6 is aryl, R.sub.7 is hydrogen, --OH or alkyl, R.sub.8 is alkyl, R.sub.9 is hydrogen, alkyl, alkenyl, aryl, furyl or --CCl.sub.3, when n is 1, R.sub.10 is alkyl, aryl, camphoryl, --CF.sub.3 or fluoro, or when n is 2, R.sub.10 is alkylene or arylene are latent curing catalysts for acid-curable stoving varnishes. On irradiation, the active curing catalysts which lead to acid-catalysed curing of the resins are formed from the compounds of the formula x.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: May 16, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Rudolf Kirchmayr, Werner Rutsch
  • Photocurable composition
    Patent number: 4831063
    Abstract: A photocurable composition comprising (1) an epoxy compound having at least one epoxy group and at least one unsaturated double bond in the same molecule; (2) a metal compound present in an amount ranging from 0.001 to 10 wt. %, based on the epoxy compound; and (3) a silicon compound which is capable of forming a silanol group when irradiated with light and which is present in an amount ranging from 0.1 to 20 wt. %, based on the epoxy compound, is characterized by a particularly rapid curing rate.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: May 16, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shuichi Suzuki, Moriyasu Wada, Shuzi Hayase
  • Radiation curable copolymers of p-acetoxystyrene with allyl esters of ethylenically unsaturated acids or alkadienes
    Patent number: 4826891
    Abstract: Radiation curable compositions useful as coatings for wood, metal, glass, fabric paper, fiber and plastics are made from copolymers of p-acetoxystyrene and another monomer which is an alkadiene or an allyl ester of a polymerizable ethylenically unsaturated acid blended with ethylenically unsaturated compounds.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: May 2, 1989
    Assignee: Hoechst Celanese Corporation
    Inventor: Balaram Gupta
  • Photopolymerizable composition
    Patent number: 4826888
    Abstract: A photopolymerizable composition comprising a vinyl monomer, a mercaptocarboxylic acid/.alpha.-diketone photopolymerization initiator and a storage stabilizer. The composition may admit of a filler, and exhibits excellent mechanical strength, storage stability, color and resistance to coloring, and availability.
    Type: Grant
    Filed: April 2, 1986
    Date of Patent: May 2, 1989
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Isao Sasaki, Nobuhiro Mukai, Hitoshi Ige
  • Radiation curable copolymers of p-acetoxystyrene and dialkyl muconates
    Patent number: 4826890
    Abstract: Radiation curable compositions useful as coatings for wood, metal, glass, fabric, paper, fiber and plastics are made from copolymers of dialkyl muconates and p-acetoxystyrene blended with ethylenically unsaturated compounds.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: May 2, 1989
    Assignee: Hoechst Celanese Corporation
    Inventor: Balaram Gupta
  • Dimensionally stable oxygen permeable hard contact lens material and method of manufacture
    Patent number: 4826889
    Abstract: Improved contact lens materials are obtained from copolymers containing a siloxanyl alkyl ester vinyl monomer by exposing the materials to high energy radiation thereby reducing the amount of unreacted monomer and residual contaminants.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: May 2, 1989
    Assignee: Polymer Technology, Corp.
    Inventors: Edward J. Ellis, Louis Mager
  • Radiation-curable macromers based on (meth)acrylate-functional polyesters, and their use
    Patent number: 4822829
    Abstract: Radiation-setting (meth)acrylate-functional polyesters prepared from base polyesters which are fluid at room temperature and have molecular weights of 1,000 or more as well as aliphatic side chains bound to the main chain by ester bridges and, in some cases, ether bridges, and in which a maximum of 90% of the original hydroxyl groups of the base polyester are functionalized, are usable for coatings and especially as adhesives free of solvents.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: April 18, 1989
    Assignee: Huels Troisdorf Aktiengesellschaft
    Inventors: Hartmut Muller, Hans Huber
  • Pressure-sensitive adhesives based on radiation-curable polyesters containing (meth)acrylic groups
    Patent number: 4820745
    Abstract: Pressure-sensitive adhesives composed of radiation-cured (meth)acrylic-functional polyesters are prepared from base polyesters, fluid at room temperature, which have molecular weights of 1,000 to 10,000 and branched main chain, and/or from new polyesters having aliphatic side chains bound by ester bridges or, in some cases, ether bridges to the main chain, followed by functionalization of a maximum of 90% of the original hydroxyl groups of the base polyesters by reaction with (meth)acrylate compounds, and crosslinked by electron beam or ultraviolet radiation in a thin coating on a support. The new pressure-sensitive adhesives have the property and the advantage of being cross-linkable by radiation without the use of solvents or diluents.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: April 11, 1989
    Assignee: Huels Troisdorf Aktiengesellschaft
    Inventors: Hartmut Muller, Hans Huber
  • Photocopolymerizable compositions based on epoxy and hydroxyl-containing organic materials having primary hydroxyl content
    Patent number: 4818776
    Abstract: This invention is directed to photocopolymerizable compositions comprising an epoxide containing two or more epoxy groups, a poly (active hydrogen) organic compound having at least some primary hydroxyl content and a photoinitiator. The cured coating compositions exhibit fast cure rates, good water resistance and can have utility as automotive finishes, can finishes, appliance finishes, general metal finishes, printing inks, adhesives and the like.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: April 4, 1989
    Assignee: Union Carbide Corporation
    Inventor: Joseph V. Koleske
  • Photocurable composition
    Patent number: 4816496
    Abstract: Disclosed are photocurable compositions which comprise(A) a compound having at least one epoxy group and at least one photocurable unsaturated ethylenic double bond within the same molecule;(B) an organometallic compound and(C) a silicon compound capable of generating silanol group by irradiation of light, or comprise(A) a compound having at least one epoxy group and at least one photocurable unsaturated ethylenic double bond within the same molecule;(E) an epoxy compound;(F) an organic phosphorus compound; and(G) a photosensitizer.The compositions of the present invention have excellent film characteristics such as good adhesion property, light resistance, heat resistance and weathering resistance.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: March 28, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Moriyasu Wada, Shuichi Suzuki, Yuusuke Wada, Shuzi Hayase, Yukihiro Mikogami
  • Method of treating living pulp tissue
    Patent number: 4813876
    Abstract: Biocompatible, shelf-stable, polymerizable compositions which are especially useful for applications requiring direct contact with living pulpal tissue, bone or dentin, and methods for using the compositions are disclosed. The compositions are non-toxic, both before and after in situ polymerization, and include at least one polymerizable monomer or prepolymer which polymerized by a mechanism other than chelation or saponification. In one aspect, the compositions comprise at least one non-toxic polymerizable ethylenically unsaturated monomer or prepolymer and a catalytically effective amount of a free radical initiator system, and preferably, from about 5 to about 70% by weight of calcium hydroxide or calcium oxide.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: March 21, 1989
    Assignee: Dentsply Research & Development Corp.
    Inventor: Wu-Lan Wang
  • Blends of epoxides and monoepoxides
    Patent number: 4814361
    Abstract: Described herein are compositions suitable for photocopolymerization comprising (a) an epoxide containing two or more epoxy groups, and (b) a hydroxyl substituted cycloaliphatic monoepoxide. The composition may additionally contain a poly (active hydrogen) organic compound and/or a photoinitiator. A coating produced from such a composition has a good combination of properties.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: March 21, 1989
    Assignee: Union Carbide Corporation
    Inventors: Joseph V. Koleske, Neil J. McCarthy, Jr.
  • Photocopolymerizable compositions based on hydroxyl-containing organic materials and substituted cycloaliphatic monoepoxide reactive diluents
    Patent number: 4812488
    Abstract: This invention is directed to photocopolymerizable compositions comprising a poly (active hydrogen) organic compound, a photoinitiator and, as a reactive diluent, a substituted cycloaliphatic monoepoxide. The photocopolymerizable compositions have low viscosity and can be applied to suitable substrates by conventional methods and, after curing, provide excellent pressure sensitive and heat-activated adhesive coatings.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: March 14, 1989
    Assignee: Union Carbide Corporation
    Inventors: Joseph V. Koleske, George T. Kwiatkowski