Patents Assigned to Cray Valley
  • Polymeric foaming agents and their application to the preparatiion of synthetic foams
    Patent number: 5539005
    Abstract: Foamable composition comprising a mixture based on polymer resin and a effective quantity, in relation to the said resin, of blowing agent. The blowing agent comprises at least one .alpha.,.beta.-hydroxolated hydrocarbon azide.Application to the production of articles made of synthetic foam.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: July 23, 1996
    Assignee: Cray Valley
    Inventors: Didier Bedel, Chantal Crozat