Patents by Inventor Thomas W. Del Pesco

Thomas W. Del Pesco 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).

  • Solvent-based fabric protector
    Patent number: 4810411
    Abstract: Textile treatment compositions are disclosed, comprising polymers of perfluoroalkyl (meth)acrylate and other monomers such as 2-chlorohydroxypropyl methacrylate or other alkyl (meth)acrylates; propylene glycol monomethyl ether; and trichlorotrifluoroethane.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: March 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Thomas W. Del Pesco, Gerald C. Culling
  • Oxyanion-catalyzed polymerization
    Patent number: 4588795
    Abstract: This invention resides in a polymerization process which is catalyzed by an oxyanion which can form a conjugate acid having a pKa (DMSO) of about 5 to about 24.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: May 13, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ira B. Dicker, William B. Farnham, Walter R. Hertler, Evan D. Laganis, Dotsevi Y. Sogah, Thomas W. Del Pesco, Patrick H. Fitzgerald
  • Process for refining tetrahydrofuran
    Patent number: 4461676
    Abstract: The level of aldehyde and ketone impurities in tetrahydrofuran can be significantly reduced by bringing the tetrahydrofuran into contact with sodium borohydride and then separating the modified impurities and the tetrahydrofuran.
    Type: Grant
    Filed: July 1, 1982
    Date of Patent: July 24, 1984
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Thomas W. Del Pesco, Richard H. Goldbaum
  • Process for preparing a tetrahydrofuran-alkylene oxide copolymer with treated bentonite catalyst
    Patent number: 4329445
    Abstract: A modified montmorillonite clay is prepared by heating it, impregnating it with an organic liquid, acid-activating it with a strong acid, and then washing it with water until it is substantially free of acid anions. The modified clay is useful as a catalyst, particularly for the preparation of tetrahydrofuran/alkylene oxide copolymers.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: May 11, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas W. Del Pesco
  • Modified montmorillonite clay catalyst
    Patent number: 4235751
    Abstract: A modified montmorillonite clay is prepared by heating it, impregnating it with an organic liquid, acid-activating it with a strong acid, and then washing it with water until it is substantially free of acid anions. The modified clay is useful as a catalyst, particularly for the preparation of tetrahydrofuran/alkylene oxide copolymers.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: November 25, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas W. Del Pesco
  • Method of catalytically preparing tetrahydrofuran/alkylene oxide polymerizates using a montmorillonite clay as the catalyst
    Patent number: 4228272
    Abstract: A polymerizate of THF and an alkylene oxide is prepared by catalytic polymerization, using as a catalyst an acid-activated montmorillonite clay having a pore volume of 0.4-0.8 cubic centimeter per gram, a surface area of 220-260 square meters per gram and an average pore diameter of 0.1-0.3 micron.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: October 14, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas W. Del Pesco
  • Synthesis of aromatic amines by reaction of aromatic compounds with ammonia
    Patent number: 4001260
    Abstract: An improved process is provided for producing an aromatic amine from ammonia and an aromatic compound which comprises reacting the aromatic compound with ammonia at a temperature of from about 150.degree. C. to about 500.degree. C. and at a pressure of from about 10 to about 1000 atmospheres in the presence of a conditioned nickel/nickel oxide/zirconium oxide cataloreactant which has been treated with ammonia prior to introduction of the cataloreactant to the amination reactants.
    Type: Grant
    Filed: December 19, 1973
    Date of Patent: January 4, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas W. Del Pesco