MANUFACTURE OF RIGID POLYVINYL CHLORIDE RESIN FOAM

Title:

MANUFACTURE OF RIGID POLYVINYL CHLORIDE RESIN FOAM

Document Type and Number:

Japanese Patent JPS6049041

Kind Code:

A

Abstract:

PURPOSE: To obtain titled foam of improved rigidity, preventable from heat discoloration caused by heat deterioration, by carrying out a mechanical expansion, using inert gas in the presence of foam stabilizer, of a polyvinyl chloride dispersion containing a specific reactive monomer and polymerization initiator.

CONSTITUTION: The objective foam can be obtained by carrying out a mechanical expansion, using an inert gas (pref. nitrogen, helium or freon gas) in the presence of foam stabilizer, of a polyvinyl chloride dispersion containing (A) a reactive monomer highly compatible with the plasticizers for polyvinyl chloride, also crosslinkable by polymerization on heating and gelling and (B) a polymerization initiator (pref. organic peroxide). The component (A) is e.g., a trimethylolpropane trimethacrylate of formula (A is residue of compound having at least two terminal OH groups or of compound having at least one ester and ether bond; X is H, halogen, methyl, or ethyl; n and m are each 1W3.

Inventors:

NAKAMURA MASARU
SAKAI KENJI
AOISHI EIJI

Application Number:

JP15685083A

Publication Date:

March 18, 1985

Filing Date:

August 26, 1983

Export Citation:

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