Sulfur Containing Patents (Class 568/18)
  • Patent number: 4492652
    Abstract: The pyrolysis of aromatic compounds with fused rings in the aromatic system which form free radicals on the peri position, for example, by eliminating a stable inorganic gas produces desirable products. These products include electrically conductive inert films. Further, with the addition of suitable inorganic compounds to the reactant, superconducting materials are obtainable. The addition of sulfur to the pyrolysis reactant also is possible and allows production of compounds useful as donors for the production of organic electrically conducting compositions.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: January 8, 1985
    Assignee: AT&T Laboratories
    Inventor: Martin L. Kaplan
  • Patent number: 4451409
    Abstract: Monomeric and polymeric triarylsulfonium complex salts which may be prepared by contacting diarylsulfoxides or polymeric arylsulfoxides with aromatic compounds in the presence of an organosulfonic acid are described. An example is tris-(4-phenoxyphenyl)sulfonium methane sulfonate prepared by reaction of bis-(4-phenoxyphenyl)sulfoxide, diphenyl ether and methane sulfonic acid. The compounds demonstrate useful corrosion inhibiting properties.
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: May 29, 1984
    Assignee: The Dow Chemical Company
    Inventors: Gary R. Buske, Richard G. Pews
  • Patent number: 4337359
    Abstract: A process for the preparation of a dimethyl polysulphide of the formulaCH.sub.3 --S.sub.x --CH.sub.3in whichx is at least 1, comprising reacting a polysulphide of the formulaM.sub.y S.sub.xin whichM represents an alkali metal atom or alkaline earth metal atom, andy is 1 or 2, with O,O,O-trimethyl thiophosphate of the formula(CH.sub.3 O).sub.3 P.dbd.S.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: June 29, 1982
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hermann Arold, Siegbert Humburger, Hans-Joachim Diehr, Helmut Porkert
  • Patent number: 4251521
    Abstract: Alkyl diaryl sulfonium salts, e.g., cyclopropyl diphenylsulfonium tetrafluoroborate, are useful as hypoglycemic agents.
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: February 17, 1981
    Assignee: Sandoz, Inc.
    Inventor: Faizulla G. Kathawala
  • Patent number: 4246259
    Abstract: Higher alkyl diaryl sulfonium salts, e.g., octadecyldiphenylsulfonium tetrafluoroborate, are useful as anti-obesity agents.
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: January 20, 1981
    Assignee: Sandoz, Inc.
    Inventor: Faizulla G. Kathawala
  • Patent number: 4233292
    Abstract: Cyclopropyl alkyl arylsulfonium salts, e.g., cyclopropyl n-propyl phenylsulfonium tetrafluoroborate, are useful as pharmaceutical agents.
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: November 11, 1980
    Assignee: Sandoz, Inc.
    Inventor: Faizulla G. Kathawala
  • Patent number: 4233421
    Abstract: A thermally stable, curable fluoroelastomer composition containing sulfonium curing agent is described. The composition is curable in reactive admixture with an inorganic acid acceptor and includes:(a) a fluoroelastomer comprising vinylidene fluoride;(b) at least one triorgano sulfonium compound; and(c) at least one aromatic polyhydroxy compound.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: November 11, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Allan T. Worm
  • Patent number: 4225488
    Abstract: In preparing organic sulfides by reacting olefins (e.g., butylenes) with a sulfur halide to form a sulfohalogenated intermediate which is subsequently sulfurized and dehalogenated by reaction with an aqueous solution of an alkali metal sulfide compound to form a noncorrosive organic sulfide product of high sulfur content, the copper strip corrosion activity is improved by resulfurizing the sulfurized olefin by contacting it with additional aqueous metal sulfide in the presence of a lower molecular weight alcohol, such as isopropanol.
    Type: Grant
    Filed: July 25, 1978
    Date of Patent: September 30, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Andrew G. Horodysky, Phillip S. Landis