Patents Examined by Lewis T. Jacobs
  • Patent number: 4988757
    Abstract: A family of novel and unique synthetic alkali metal alumino-silicates (SAMS) are produced by the hydrothermal reaction between kaolin and alkali metal silicates. The integrated composition of the SAMS products is a unique entity having an overall composition ofxM.sub.2 O:Al.sub.2 O.sub.3 :ySiO.sub.2 :zH.sub.2 Owhere x is the number of moles of alkali metal oxide and is an integer from 0.01 to 2.0, M is the alkali metal, y is the number of moles of SiO.sub.2 in the unique SAMS compositions and is an integer greater than 2.0, and z is the number of moles of bound water and is an integer ranging from 1.0 to 5.0. The unique SAMS compositions are structured materials in which the structure can be controlled, and are therefore useful as functional fillers, as TiO.sub.2 extenders, as silica extenders or as reinforcing agents for paper, paint, rubber, plastics and specialty products.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: January 29, 1991
    Assignee: J. M. Huber Corporation
    Inventor: Satish K. Wason
  • Patent number: 4988758
    Abstract: The fluorine-substituted organopolysiloxane as the principal ingredient of the inventive silicone rubber composition has vinyl groups to serve as the cross-linking points at the molecular chain terminals while at least the penultimate siloxane unit or the silicon atom adjacent to the terminal silicon atom has no fluorine-substituted hydrocarbon group bonded to the silicon atom. Being freed from the steric hindrance due to the bulky fluorine-substituted hydrocarbon group bonded to the adjacent silicon atom, the vinyl group bonded to the terminal silicon atom can pertain to the cross-linking reaction much easier than otherwise so that the silicone rubber composition of the invention containing an organic peroxide or a combination of an organohydrogenpolysiloxane and a platinum catalyst as a curing agent can be rapidly cured to give a cured silicone rubber article having excellent resistance against oils and organic solvents as well as mechanical properties.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: January 29, 1991
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Takeshi Fukuda, Motoo Fukushima, Kunio Itoh, Hironao Fujiki
  • Patent number: 4988745
    Abstract: A hardener composition for alkaline phenolic resole resin binders which comprises a solution of a benzylic ether resole resin in an ester. Binder compositons comprising this hardener with alkaline phenolic resole resins are further provided as are foundry molding compositions and methods for making foundry cores and molds using the molding compositions.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: January 29, 1991
    Assignee: Acme Resin Corporation
    Inventors: S. Raja Iyer, Sudhir K. Trikha
  • Patent number: 4988746
    Abstract: A flame resistant staple fiber blend, useful for flame-resistant clothing, comprising 80 to 97 weight parts of m-aramide polymer staple fibers (A) with a small thermal shrinkage stress of 130 mg/d or less at 350.degree. C., 3 to 20 weight parts of p-aramide copolymer staple fibers (B) with a higher flame resistance than that of the m-aramide fiber (A), and optionally, 240 weight parts or less of non-fusible staple fibers (C) with a lower thermal shrinkage stress than that of the staple fiber (A).
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: January 29, 1991
    Assignee: Teijin Limited
    Inventors: Makoto Tanaka, Mutsuo Katsu, Tadashi Seki
  • Patent number: 4987175
    Abstract: Compositions in accordance with the invention comprise a polymer and flake reinforcing material distributed throughout the polymer in an effective amount to structurally reinforce the polymer. Individual flakes of the flake material (a) are less than or equal to 1,000 Angstroms in thickness, (b) have an aspect ratio greater than or equal to 100, and (c) are preferably significantly randomly oriented throughout the polymer. A novel apparatus for shear grinding a platy solid material into such individual flakes comprises a cylindrical shearing drum and a shear grinder received therein. The shearing drum has a longitudinal axis and an internal surface formed about a first predetermined radius of curvature. The cylindrical drum is supported for rotation about its longitudinal axis. The shear grinder has an external surface formed about a second predetermined radius of curvature. The second radius of curvature is slightly less than the first radius of curvature.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: January 22, 1991
    Assignee: Battelle Memorial Institute
    Inventor: Lee R. Bunnell, Sr.
  • Patent number: 4987173
    Abstract: A polyolefin resin composition comprising from 30% to 96% by weight of a polyolefin, from 3% to 50% by weight of a fibrous inorganic filler selected from the group consisting of a magnesium hydroxide fiber, a magnesium oxide fiber, and a gypsum fiber having a mean fiber diameter of from 0.1 to 2 .mu.m and an aspect ratio of from 20 to 100 or a mixture of two or more of said inorganic fillers, and from 1% to 60% by weight of a thermoplastic elastomer.The said composition provides a molded material which has a good external appearance and is excellent in the impact strength, rigidity, and heat stability.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: January 22, 1991
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Manabu Nomura, Ryuzo Tomomatsu, Kazuaki Kihara
  • Patent number: 4987168
    Abstract: Molding compositions of thermoplastic plasticizer-containing polyamides exhibit greatly reduced migration of plasticizer or no migration at all due to having 0.1 to 20% by weight of sterically hindered carbodiimides of the formulaR.sub.1 --N.dbd.C.dbd.N--[R.sub.2 --N.dbd.C.dbd.N].sub.2 --R.sub.3wherein n is 0 to 100; R.sub.1 and R.sub.3 are individually a monovalent radical taken from the class consisting of aliphatic having 1 to 20 carbon atoms, cycloaliphatics having 6 to 20 carbon atoms, and aromatics having 8 to 20 carbon atoms and also having substituents; and R.sub.2 is a divalent radical taken from the class consisting of aliphatics having 1 to 20 carbon atoms, cycloaliphatic having 6 to 20 carbon atoms, and aromatics having 8 to 20 carbon atoms and also having substituents.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: January 22, 1991
    Assignee: EMS-Inventa AG
    Inventor: Franz Kerschbaumer
  • Patent number: 4987174
    Abstract: A polyacetal resin composition for use in producing molded articles of low gloss comprises the polyacetal and an aluminosilicate fiber.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: January 22, 1991
    Assignee: Hoechst Celanese Corporation
    Inventors: Edwina Ying, Conrad G. Hayes
  • Patent number: 4987162
    Abstract: A family of novel and unique synthetic alkali metal alumino-silicates (SAMS) are produced by the hydrothermal reaction between kaolin and alkali metal silicates. The integrated composition of the SAMS products is a unique entity having an overall composition ofxM.sub.2 O:Al.sub.2 O.sub.3 :ySiO.sub.2 :zH.sub.2 Owhere x is the number of moles of alkali metal oxide and is an integer from 0.01 to 2.0, M is the alkali metal, y is the number of moles of SiO.sub.2 in the unique SAMS corporations and is an integer greater than 2.0, and z is the number of moles of bound water and is an integer ranging from 1.0 to 5.0. The unique SAMS compositions are structured materials in which the structure can be controlled, and are therefore useful as functional fillers, as TiO.sub.2 extenders, as silica extenders or as reinforcing agents for paper, paint, rubber, plastics and specialty products.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: January 22, 1991
    Assignee: J. M. Huber Corporation
    Inventor: Satish K. Wason
  • Patent number: 4985486
    Abstract: The invention relates to thermoplastic molding compounds of reinforced (for example with glass fibers) and/or filled (for example with kaolin) polyamides, interpolymers having a certain chemical composition (of polyamides and thermoplastic copolymers) and, optionally, a rubber modifier which increases the toughness of the molding compounds, and to a process for their production.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: January 15, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Uwe Westeppe, Christian Lindner, Karl-Erwin Piejko, Hans-Joachim Laue
  • Patent number: 4985478
    Abstract: Disclosed is a thermosetting resin composition comprising (a) a preliminary reaction product between a polyamino compound and an unsaturated bismaleimide compound, (b) an epoxy group-containing vinyl compound, (b') a vinyl group-free aliphatic or aromatic halogenated epoxy compound, (c) an epoxy curing agent and (d) a radical polymerization initiator as indispensable components. This composition is characterized in that the vinyl group-free aliphatic or aromatic halogenated epoxy compound as the component (b') is incorporated. This unsaturated bismaleimide type thermosetting resin composition is excellent in not only heat resistance and strength but also flame retardancy and light weight characteristic.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: January 15, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Masao Kameyama, Shigeyuki Kumagawa
  • Patent number: 4983679
    Abstract: Silylketene acetals, including "living" GTP polymers, are acylated or sulfonylated in the presence of GTP-effective catalysts with acyl or sulfonyl compounds to produce .beta.-ketoesters or .beta.-sulfonylesters; polymeric products, including capped, coupled and chain-extended polymers and block copolymers can be prepared.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: January 8, 1991
    Assignee: E. I. DuPont de Nemours and Company
    Inventors: Gordon M. Cohen, Hans J. Reich
  • Patent number: 4983682
    Abstract: A process for the production of aromatic petroleum resins by the cationic copolymerization of a C.sub.6 -C.sub.12 aromatic cut and the product obtained by the thermal polymerization of a dicyclopentadiene cut, products produced by the process, and the application in the manufacture of printing inks, varnishes and paints.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: January 8, 1991
    Assignee: Norsolor S.A.
    Inventors: Paul Badie, Jean-Marie Siebert
  • Patent number: 4983660
    Abstract: A highly crystalline polyethylene terephthalate resin composition comprising (A) 100 parts by weight of a polyethylene terephthalate copolymer comprising ethylene terephthalate units as the main recurring units, which is formed by copolymerizing a glycol component containing 1 to 20% by weight of a polyalkylene glycol having an average molecular weight of 500 to 20,000 and 1.2 to 15% by weight of diethylene glycol with a carboxylic acid component composed mainly of terephthalic acid, (B) 5 to 200 parts by weight of a fibrous reinforcer, (C) 0.5 to 130 parts by weight of a nucleating agent, and (D) 0.1 to 60 parts by weight of a crystallization-promoting agent. The resin composition optionally contains 2 to 100 parts by weight of an inorganic compound, 2 to 100 parts by weight of an impact strength improver, 2 to 40 parts by weight of a flame retardant, or 1 to 20 parts by weight of a flame retardant assistant.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: January 8, 1991
    Assignee: Mitsubishi Rayon Company Ltd.
    Inventors: Tomohiko Yoshida, Ryoji Handa, Noriyuki Tajiri, Hitochi Iwasaki, Mituto Yoshihiro
  • Patent number: 4983702
    Abstract: A contact lens is described which is synthesized by reaction in a mold of a isocyanate capped poly(dialkylsiloxane) prepolymer with a poly(dialkylsiloxane) di- or polyalkanol. The clear polyurethane rubber contact lens is readily made completely wettable by a transfer-grafting process or post-treatment and has a high oxygen permeability.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: January 8, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Karl F. Mueller, Paul Harisiades
  • Patent number: 4983720
    Abstract: A process for preparing polyarylene thioethers wherein thiophenols of formula ##STR1## are electrolytically polymerized in the presence of a Lewis acid and/or a proton acid.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: January 8, 1991
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Eishun Tsuchida, Hiroyuki Nishide, Kimihisa Yamamoto, Shu Yoshida
  • Patent number: 4981925
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotin compositions obtained by reacting a diorganotin oxide of the formula R.sub.2 SnO or a diorganotin dichloride of the formula R.sub.2 SnCl.sub.2 with a compound of the formula HS--CH.sub.2 CH(OH)CH.sub.2 XH where R is a C.sub.1 -C.sub.8 alkyl or an aryl group and X is --O-- or --S--.Also disclosed are cationic electrodepositable (CED) compositions containing such catalysts.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: January 1, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Patent number: 4981888
    Abstract: A pigmented thermoplastic resin composition comprising:(A) a thermoplastic resin;(B) a metal phthalocyanine pigment; and(C) 0.5 to 30% by weight, based on the weight of the pigment (B), as agent imparting heat stability to component (B), of a sulphonated imidomethyl phthalocyanine having the formula I: ##STR1## wherein Pc is a phthalocyanine residue optionally substituted by up to 4 chlorine or bromine atoms;M is hydrogen or a metal capable of forming a metal phthalocyanine;m is a vlaue within the range of from 0.05 to 1.0;n is a value within the range of from 0.1 to 4.0; andX is a residue such that, in combination with the group ##STR2## it form a 5-, 6- or 7-membered cyclic imide.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: January 1, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Robert Langley, Colin D. Campbell
  • Patent number: 4981898
    Abstract: A composition comprising a blend of a polyester resin and a polycarbonate resin are provided with a transesterification reaction hindering amount of a metaphosphate fiber.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: January 1, 1991
    Assignee: General Electric Company
    Inventor: Walt H. Bassett
  • Patent number: 4981907
    Abstract: A process is described for the preparation of a polymer which contains, besides polymerized units of vinyl chloride, 30 to 60% by weight, relative to the polymer, of polymerized units of an acrylate, if appropriate together with copolymerizable monomers. The acrylate is firstly polymerized in aqueous emulsion with addition of a monomer containing at least 2 ethylenically unsaturated, non-conjugated double bonds in the presence of a fatty acid salt and in the presence of an alkane- or alkylarylsulfonate. Polymerization in aqueous suspension is then carried out in which vinyl chloride, customary polymerization auxiliaries, a precipitant for the emulsifiers used in the emulsion polymerization, and water are initially introduced, and the acrylate dispersion produced by emulsion polymerization is subsequently added. Polymers of high bulk density and good free-flowing properties which can easily be demonomerized are thus obtained.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: January 1, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinz Klippert, Manfred Engelmann