Medium density chlorinated polyvinyl chloride foam and process for preparing

  • US 5,789,453 A
  • Filed: 04/10/1997
  • Issued: 08/04/1998
  • Est. Priority Date: 04/10/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A medium density foam having a specific gravity in the range of 0.3 to 1.5 having been foamed from a composition comprising chlorinated polyvinyl chloride, decomposition type blowing agent(s) or blends thereof, a tin stabilizer, and an impact modifier, wherein said decomposition blowing agent comprises a blend of bicarbonate and azodicarbonamide blowing agent.

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