Patents by Inventor William A. Dupont

William A. Dupont 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).

  • Polymeric flow modifiers
    Patent number: 5621059
    Abstract: Polymeric flow modifiers having a weight average molecular weight of between 4,000 to 450,000 consisting essentially of polymerized monomers on a weight basis as follows: 40 to 96% C.sub.1 or C.sub.2 alkyl acrylate or mixtures thereof; 4 to 12% acrylic acid; and 0 to 48% copolymerized acrylic acid ester monomer.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: April 15, 1997
    Assignee: Monsanto Company
    Inventors: William A. Dupont, Marilyn A. Grolitzer, Meshach Ojunga-Andrew, Linda A. Paradis
  • Ethylenically unsaturated carbamates and coating compositions
    Patent number: 5102949
    Abstract: Ethylenically unsaturated carbamates are prepared by reaction of unsaturated isocyanates with the hydroxy groups of polyvinyl acetals. The ethylenically unsaturated carbamates either alone or formulated with unsaturated co-reactants such as (meth)-acryloyl monomers and oligomers, maleates and fumarates provide radiation curable coating compositions.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: April 7, 1992
    Assignee: Monsanto Company
    Inventors: William A. Dupont, George E. Sheldrick
  • Coating compositions containing ethylenically unsaturated carbamates
    Patent number: 5075384
    Abstract: Ethylenically unsaturated carbamates prepared by addition of unsaturated isocyanates to the hydroxy groups of styrene allyl alcohol copolymers are formulated with allylic monomers and unsaturated co-reactants selected from (meth)-acryloyl monomers and oligomers, maleates and fumarates to provide air-dry-and heat-curable coating compositions.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: December 24, 1991
    Assignee: Monsanto
    Inventors: William A. DuPont, Jerome W. Knapczyk
  • Ethylenically unsaturated carbamates and coating compositions
    Patent number: 5055518
    Abstract: Ethylenically unsaturated carbamates are prepared by reaction of unsaturated isocyanates with the hydroxy groups of polyvinyl acetals. The ethylenically unsaturated carbamates either alone or formulated with unsaturated co-reactants such as (meth)-acryloyl monomers and oligomers, maleates and fumarates provide radiation curable coating compositions.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: October 8, 1991
    Assignee: Monsanto Company
    Inventors: William A. Dupont, George E. Sheldrick
  • Ethylenically unsaturated carbamates and coating compositions
    Patent number: 5049623
    Abstract: Ethylenically unsaturated carbamates are prepared by reaction of unsaturated isocyanates with the hydroxy groups of styrene allyl alcohol copolymers. The ethylenically unsaturated carbamates either alone or formulated with unsaturated co-reactants such as (meth)-acryloyl monomers and oligomers, maleates and fumarates provide radiation curable coating compositions.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: September 17, 1991
    Assignee: Monsanto Company
    Inventor: William A. Dupont
  • Coating compositions containing ethylenically unsaturated carbamates
    Patent number: 5030696
    Abstract: Ethylenically unsaturated carbamates prepared by addition of unsaturated isocyanates to the hydroxy groups of styrene allyl alcohol copolymers are formulated with allylic monomers and unsaturated co-reactants selected from (meth)-acryloyl monomers and oligomers, maleates and fumarates to provide air-dry-and heat-curable coating compositions.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: July 9, 1991
    Assignee: Monsanto Company
    Inventors: William A. DuPont, Jerome W. Knapczyk
  • Coating compositions containing ethylenically unsaturated carbamates
    Patent number: 5026771
    Abstract: Ethylenically unsaturated carbamates prepared by addition of unsaturated isocyanates to the hydroxy groups of polyvinyl acetals are formulated with allylic monomers and optionally unsaturated co-reactants selected from (meth)-acryloyl monomers and oligomers, maleates and fumarates to provide air-dry- and heat-curable coating compositions.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: June 25, 1991
    Assignee: Monsanto Company
    Inventors: William A. Dupont, Jerome W. Knapczyk