Foaming of unsaturated polyester resins at elevated...

Details Foaming of unsaturated polyester resins at elevated... Foaming of unsaturated polyester resins at elevated...

C - Chemistry, Metallurgy

08

J

403/57

C08J 9/10 (2006.01) C08L 67/06 (2006.01)

Patent

CA 1265897

Abstract of the Disclosure Low density foams are prepared from an admixture which comprises an unsaturated polyester resin, a free radical initiator which initiator is activated at temperatures from about 100° to about 400°F, and a compound selected from a t-alkylhydrazinium salt or a carbonylhydrazine. The low density foams have uniform cell structure without cracks or voids and the process is efficient.

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