Patents by Inventor Rodney F. Lloyd

Rodney F. Lloyd 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).

  • Reaction injection molded elastomers made using a polyurethane organometallic catalyst amine terminated polyethers amine terminated chain extender and aromatic polyisocyanate
    Patent number: 4444910
    Abstract: The invention relates to reaction injection molded elastomers containing a major amount of polyurea linkages derived from high molecular weight amine terminated polyethers, an aromatic diamine chain extender and a polyisocyanate. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: April 24, 1984
    Assignee: Texaco Inc.
    Inventors: Doris M. Rice, Richard J. G. Dominguez, Rodney F. Lloyd
  • Reaction injection molded elastomer containing an internal mold release made by a two-stream system
    Patent number: 4396729
    Abstract: The invention is a method of making a molded reaction injection molded elastomer which will release from its mold without the presence of externally applied mold release agents. The reaction injection molded (RIM) elastomer is made by injecting exactly two streams via a RIM machine into a mold cavity of the desired configuration, a formulation comprising in the first stream amine terminated polyethers of greater than 1,500 molecular weight, an amine terminated chain extender and an internal mold release agent, and in the second stream an aromatic polyisocyanate. The resulting RIM elastomer may be removed from the mold easily. RIM elastomers are useful, for example, for automobile body parts.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: August 2, 1983
    Assignee: Texaco Inc.
    Inventors: Richard J. G. Dominquez, Doris M. Rice, Rodney F. Lloyd