Medium density chlorinated polyvinyl chloride foam and process for preparing
AssigneeThe B. F. Goodrich Company
InventorRobert Edwin Detterman
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Abstract
The present invention relates to a medium density chlorinated polyvinyl chloride foam and the method of preparing such a foam using a blend of chemical blowing agents. The foam having a specific gravity in the range of about 0.3 to about 1.5 comprises chlorinated polyvinyl chloride, a blend of decomposition type blowing agents, a tin stabilizer, a optional impact modifier and a optional high molecular weight process aid.
Claims11
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.
Dependencies are inferred from the claim text.