Patents Assigned to Thor Radiation Research, Inc.
  • Patent number: 5401541
    Abstract: This invention relates to a coating system which forms a highly abrasion resistant, chemical resistant, impact resistant protective finish for a substrate. The coating system is based upon using two coatings of different characteristics but having excellent adhesion to one another. The outermost or surface coating layer is a highly crosslinked hard polymer, which is adhered to an underlying base coating layer of a compatible softer polymer. The outer hard polymer preferably comprises a highly crosslinked acrylic copolymer derived from at least 40 percent by weight of a multifunctional aliphatic acrylate monomer of three or more functional groups, while the underlying softer polymer preferably comprises a crosslinked aliphatic urethane acrylate copolymer and the multifunctional aliphatic acrylate monomer of three or more functional groups.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: March 28, 1995
    Assignee: Thor Radiation Research, Inc.
    Inventor: William P. Hodnett, III
  • Patent number: 5254395
    Abstract: This invention relates to a coating system which forms a highly abrasion resistant, chemical resistant, impact resistant protective finish for a substrate. The coating system is based upon using two coatings of different characteristics but having excellent adhesion to one another. The outermost or surface coating layer is a highly crosslinked hard polymer, which is adhered to an underlying base coating layer of a compatible softer polymer. The outer hard polymer preferably comprises a highly crosslinked acrylic copolymer derived from at least 40 percent by weight of a multifunctional aliphatic acrylate monomer of three or more functional groups, while the underlying softer polymer preferably comprises a crosslinked aliphatic urethane acrylate copolymer and the multifunctional aliphatic acrylate monomer of three or more functional groups.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: October 19, 1993
    Assignee: Thor Radiation Research, Inc.
    Inventor: William P. Hodnett, III
  • Patent number: 5114783
    Abstract: This invention relates to a coating system which forms a highly abrasion resistant, chemical resistant, impact resistant protective finish for a substrate. The coating system is based upon using two coatings of different characteristics but having excellent adhesion to one another. The outermost or surface coating layer is a highly crosslinked hard polymer, which is adhered to an underlying base coating layer of a campatible softer polymer. The outer hard polymer preferably comprises a highly crosslinked acrylic polymer, while the underlying softer polymer preferably comprises a crosslinked urethane polymer.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: May 19, 1992
    Assignee: Thor Radiation Research, Inc.
    Inventor: William P. Hodnett, III
  • Patent number: 5085917
    Abstract: This invention relates to a fabric having a radiation cured crosslinked coating composition applied to the selvages of the fabric to provide ravel resistance thereto. The coating composition is a copolymer of an elastomeric-forming low viscosity monofunctional acrylate monomer and a reactive polyfunctional acrylate monomer. A method of forming a ravel resistant selvage in a fabric is also provided.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: February 4, 1992
    Assignee: Thor Radiation Research, Inc.
    Inventor: William P. Hodnett, III