Patents by Inventor Thomas Robert Darling

Thomas Robert 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).

  • Patent number: 7740699
    Abstract: Disclosed herein are coating compositions comprising a blocked polyol having a first hydroxyl group at position 1 carbon atom and a second hydroxyl group at position 2 or 3 carbon atom, wherein both the first and the second hydroxyl groups are blocked by a single hydrolyzable orthoformate group; and a polyisocyanate compound. Methods of producing and using said coating compositions are also disclosed.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: June 22, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Alexei A. Gridnev, Thomas Robert Darling
  • Patent number: 7507786
    Abstract: Methods of producing decolorized homo- and co-polymers through polymerization of monomers in presence of cobalt-complexed tetraphenyl porphyrin derivatives and decolorization of the produced polymer by exposing the polymer to a sorbent and, optionally, a solvent are disclosed herein.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: March 24, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Bradford B. Wayland, Zhi Lu, Alexei A. Gridnev, Thomas Robert Darling
  • Publication number: 20090011133
    Abstract: Disclosed herein are coating compositions comprising a blocked polyol having a first hydroxyl group at position 1 carbon atom and a second hydroxyl group at position 2 or 3 carbon atom, wherein both the first and the second hydroxyl groups are blocked by a single hydrolyzable orthoformate group; and a polyisocyanate compound. Methods of producing and using said coating compositions are also disclosed.
    Type: Application
    Filed: October 4, 2007
    Publication date: January 8, 2009
    Inventors: Alexei A. Gridnev, Thomas Robert Darling
  • Patent number: 7071264
    Abstract: This invention relates to rapid curing coating compositions that are particularly useful for automotive OEM and refinish applications. The coating composition includes a crosslinkable component that contains a novel highly branched acrylic polymer, and a crosslinking component that contains conventional crosslinking agents, such as polyisocyanate and melamine. This invention is also directed to a process for producing coatings from the rapid curing coating compositions. These compositions are especially useful in providing hard highly crosslinked coatings.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: July 4, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Thomas Robert Darling, Robert John Barsotti, Alexei A. Gridnev, Patricia Mary Ellen Sormani
  • Patent number: 6476100
    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-ftmctional copolymer as a matrix resin crosslinked with a straight or branched chain aliphatic carboxylic acid or anhydride of such acid.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: November 5, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Beibei Diao, Thomas Robert Darling
  • Patent number: 6291620
    Abstract: Process for the synthesis of block polymers, homopolymers and copolymers of narrow polydispersity having formula (1) by contacting selected vinyl monomer(s), vinyl-terminated compound(s) and free radicals in which effective control of production of polymer is achieved by controlling the mole ratio of vinyl monomer(s), vinyl-terminated compound(s) and free radicals relative to one another; and polymers produced thereby
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: September 18, 2001
    Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific Industrial Research Organization
    Inventors: Graeme Moad, Catherine Louise Moad, Julia Krstina, Ezio Rizzardo, Thomas Robert Darling, Charles Thomas Berge
  • Patent number: 4097439
    Abstract: Coating composition containing at least one free radical polymerizable ethylenically unsaturated monomer, and a chain extended polyurethane polymer having terminally ethylenically unsaturated groups and preferably polymeric urea linkages, said polymer having a molecular weight of between about 2,000 and 20,000. The polymerizable monomer is at least a partial solvent for the polymer. The coating compositions may be cured by free radical reactions to yield tough, mar-resistant coatings.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: June 27, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas Robert Darling