Patents by Inventor Alan C. G. Aldred

Alan C. G. Aldred 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).

  • Thermoplastic elastomer composition
    Patent number: 4591615
    Abstract: A process for producing a thermoplastic elastomer comprising curing a blend of nitrile rubber and a thermoplastic under dynamic curing conditions. The thermoplastic comprises a copolymer of ethylene and an acrylic or methacrylic ester, e.g. ethylene-ethyl acrylate, and the curing agent is a peroxy curing agent. The compositions are cured by mixing at a temperature above the activation temperature of the curing agent and above the melting point of the thermoplastic copolymer.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: May 27, 1986
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Alan C. G. Aldred, Sidney G. Fogg
  • Blends of hardened extract with copolymers of olefin/alkyl acrylate
    Patent number: 4511689
    Abstract: This invention relates to a blend of an olefin/alkyl acrylate copolymer and hardened extract which has a saturated hydrocarbon content of not more than 10% by weight and articles made therefrom, e.g. linings for reservoirs and for water proofing roofs. The new products are easier to manufacture since they resist gelation, do not suffer from problems of shrinkage and are appreciably cheaper.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: April 16, 1985
    Assignee: The British Petroleum Company p.l.c.
    Inventor: Alan C. G. Aldred
  • Polymer/bituminous material blends, process for making articles from such blends and articles made by the process
    Patent number: 4340517
    Abstract: Blends of chlorosulphonated polyethylene and defined bituminous material are modified by the addition of not more than 15% by weight, based on total weight of chlorine-containing synthetic elastomer, of a thermoplastic olefin polymer having a softening point in the range 110.degree.-160.degree. C. The incorporation of this polymer reduces shrinkage when sheets formed from the blend are exposed to heat while in use.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: July 20, 1982
    Assignee: The British Petroleum Company Limited
    Inventors: Alan C. G. Aldred, Brian Weeks