Blowing agent mixture

Details Blowing agent mixture Blowing agent mixture

C - Chemistry, Metallurgy

09

K

48/47, 403/82

C09K 3/00 (2006.01) C08J 9/08 (2006.01)

Patent

CA 1055200

ABSTRACT OF THE DISCLOSURE The invention refers to a blowing agent composition comprising 85-60%, by weight, of 1,4-butanediol-bis-(carbonic acid ester-benzoic acid anyhdride) and 15-40%, by weight, of silicon dioxide. Silicon dioxide reduces the decomposition temperature of the anhydride while at the same time increasing the yield of gas substantially.

232921

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