Patents by Inventor Thomas E. Wolff

Thomas E. Wolff 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).

  • Process for producing sulfonylbis (phthalic anhydride)
    Patent number: 5342968
    Abstract: A process for making relatively high purity eulfonylbis(phthalic anhydride) is provided. 3,3',4,4'-tetramethyl diphenyl sulfone is catalytically oxidized in a solvent under liquid phase elevated temperature and pressure conditions. The catalyst is constituted by cobalt, manganese, zirconium, and bromine. Sulfonylbis(phthalic) acid is recovered by crystallization and is then heated to produce the anhydride. Preferably, the acid is purified prior to dehydration.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: August 30, 1994
    Assignee: Amoco Corporation
    Inventors: Stephen P. Brugge, Juergen K. Holzhauer, Thomas E. Wolff
  • Ester-modified olefin polymerization catalyst
    Patent number: 4657883
    Abstract: An olefin polymerization catalyst component comprises an organoaluminum-reduced titanium trihalide on which a pretreatment amount of olefin polymer has been placed complexed with an alkyl aliphatic carboxylic acid ester containing 7 to 22 carbon atoms having a structure:R--CO.sub.2 R'wherein R' is an alkyl group containing 3 to about 8 carbon atoms and R is an alkyl group containing 3 to 17 carbon atoms, and treated with a Lewis acid, a chlorocarbon or an haloalkylchlorosilane.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: April 14, 1987
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Sam S. Lee, Thomas E. Wolff, Linda Ornellas