Medium density chlorinated polyvinyl chloride foam and process for preparing
AssigneePMD Holdings Corp.
InventorPaul M. Adriani
Life of this patent
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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. The foam having a specific gravity in the range of about 0.3 to about 1.5 comprises chlorinated polyvinyl chloride, a nitrogen containing decomposition type blowing agent, a tin stabilizer, a costabilizer and a high molecular weight process aid.
Claims14
A medium density chlorinated polyvinyl chloride foam having a specific gravity in the range of about 0.3 to 1.5 comprising chlorinated polyvinyl chloride having a chlorine content of at least sixty percent (60%), a nitrogen containing decomposition type blowing agent, a tin stabilizer, a costabilizer selected from a member of the group consisting of disodium hydrogen phosphate, hydrotalcite, alkali citrates, aluminum magnesium hydroxy carbonate hydrate, magnesium aluminum silicate, and alkali alumino silicates, and a high molecular weight process aid and, optionally lubricant(s) and/or metal release agent(s).
Dependencies are inferred from the claim text.