Patents by Inventor Jim J. Straw

Jim J. Straw has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Synthesis of bis(haloarylsulfonyl) aromatics
    Patent number: 5276196
    Abstract: This invention relates to the synthesis of bis(haloarylsulfonyl) aromatic compounds and more specifically, bis(chlorophenylsulfonyl) aromatic compounds. Bis(chlorophenylsulfonyl) aromatic compounds and particularly 4,4'-bis(4-chlorophenylsulfonyl)biphenyl are frequently used as monomers and comonomers in making high temperature polymers which possess glass transition temperatures greater than 260.degree. C. A process has been developed wherein product of high purity and minimal iron contamination is produced by reacting haloarylsulfonyl halide with an aromatic compound in the presence of an appropriate catalyst with and without solvent.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: January 4, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Albert G. Holba, Jim J. Straw, Mel D. Herd
  • Poly(arylene sulfide sulfone) polymer containing ether groups
    Patent number: 4808694
    Abstract: A two-step process to make a poly(arylene sulfide sulfone) polymer exhibiting improved high temperature properties is described. In the first step a prepolymer characterized as dihalo-terminated polyethersulfone oligomers is prepared by reacting an aromatic diphenol with an excess of a dihalo aromatic sulfone. In the second step the excess dihalo aromatic sulfone and the oligomers are copolymerized in the presence of a sulfur source to form a poly(arylene sulfide sulfone) polymer. An alkali metal carboxylate is present in the second step. The polymers exhibit improved softening temperature and glass transition temperature and are useful in high temperature applications.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: February 28, 1989
    Assignee: Phillips Petroleum Company
    Inventors: James T. Edmonds, Jr., Jon Geibel, Rex L. Bobsein, Jim J. Straw
  • Recovery and rejuvenation of Wacker-type catalysts
    Patent number: 4419525
    Abstract: Wacker-type oxidation catalysts can be recovered and rejuvenated for further use by separating catalyst solids from the reaction mixture and, optionally, adjusting pH.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: December 6, 1983
    Assignee: Phillips Petroleum Company
    Inventors: Tod K. Shioyama, Jim J. Straw
  • Poly(arylene sulfide sulfone)polymer containing ether groups
    Patent number: RE34464
    Abstract: A two-step process to make a poly(arylene sulfide sulfone) polymer exhibiting improved high temperature properties is described. In the first step a prepolymer characterized as dihalo-terminated polyethersulfone oligomers is prepared by reacting an aromatic diphenol with an excess of a dihalo aromatic sulfone. In the second step the excess dihalo aromatic sulfone and the oligomers are copolymerized in the presence of a sulfur source to form a poly(arylene sulfide sulfone)polymer. An alkali metal carboxylate is present in the second step. The polymers exhibit improved softening temperature and glass transition temperature and are useful in high temperature applications.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: November 30, 1993
    Assignee: Phillips Petroleum Company
    Inventors: James T. Edmonds, Jr., Jon Geibel, Rex L. Bobsein, Jim J. Straw