Process for producing polystyrene resin foam

Details Process for producing polystyrene resin foam Process for producing polystyrene resin foam

C - Chemistry, Metallurgy

08

J

C08J 9/12 (2006.01) B29C 47/00 (2006.01) C08J 3/22 (2006.01) C08J 9/00 (2006.01) C08K 5/101 (2006.01) C08L 25/04 (2006.01)

Patent

CA 2058501

A process for producing a polystyrene resin foam is disclosed, whcih comprises supplying an extruding machine with a polystyrene resin, a fine inorganic powder and a highly volatile foaming agent, heating them to melt, and extruding the melt from the nozzle into a zone of the lower pressure, wherein 0.01 to 2 parts by weight of an alcoholic ester of a higher fatty acid is added to 100 parts by weight of the polystyrene resin. The process insures that foams having a skin of good aesthetic appeal that are free from staining and malodor can be produced consistently for a prolonged time without any fire hazard.

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