Patents by Inventor Thomas R. Darling

Thomas R. Darling 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).

  • Solid surface materials prepared from extrudable acrylic composites
    Publication number: 20020137829
    Abstract: Solid surface material is prepared from an extrudable composite material comprising a matrix of at least one acrylic resin and a filler dispersed in the matrix, said acrylic resin comprising an acrylic epoxy-functional copolymer as a matrix resin crosslinked with a straight or branched chain aliphatic carboxylic acid or anhydride of such acid.
    Type: Application
    Filed: February 2, 2001
    Publication date: September 26, 2002
    Inventors: Beibei Diao, Thomas R. Darling
  • Perfluorodiglycidyl ethers and precursors therefor
    Patent number: 4377705
    Abstract: Perfluoroglycidyl ethers of the formula ##STR1## are prepared by epoxidation of a perfluorodiallyl ether of the formulaCF.sub.2 =CFCF.sub.2 OR.sub.F.The glycidyl ethers are useful as monomers for preparing polymers which provide crosslinking or cure sites and are stable elastomeric materials useful as sealants, caulks, and fabricated objects.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: March 22, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Carl G. Krespan, Thomas R. Darling
  • Perfluorodiglycidyl ethers
    Patent number: 4363898
    Abstract: Perfluoroglycidyl ethers of the formula ##STR1## are prepared by epoxidation of a perfluorodiallyl ether of the formula:CF.sub.2 .dbd.CFCF.sub.2 OR.sub.F.The glycidyl ethers are useful as monomers for preparing polymers which provide crosslinking or cure sites and are stable elastomeric materials useful as sealants, caulks, and fabricated objects.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: December 14, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Carl G. Krespan, Thomas R. Darling
  • Purification and polymerization of hexafluoropropylene oxide
    Patent number: 4356291
    Abstract: Purified hexafluoropropylene oxide is produced by scrubbing to remove impurities that inhibit polymerization of hexafluoropropylene oxide, thus permitting the preparation of polymers having a degree of polymerization of more than 200, including end-capped and chain-extended derivatives thereof.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: October 26, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas R. Darling