Blowing agent composition

Details Blowing agent composition Blowing agent composition

1986-12-10

1987-09-08

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 93, 521 94, 521145, 521146, 521143, 521144, 521180, 521909, C08J 910

Patent

active

046924752

ABSTRACT:
A blowing agent composition, comprising: (i) azodicarbonamide; (ii) zinc oxide and/or zinc carbonate; and (iii) at least one member selected from the group consisting of zinc salts of C.sub.1 -C.sub.6 organic acids, and C.sub.1 -C.sub.6 organic carboxamides characterized by a high gas evolution rate. The blowing agent composition may be used in effective amounts in formulations containing a foamable polymer to yield an efficiently gas expanded polymeric composition upon exposure to heat. Suitable C.sub.1 -C.sub.6 organic acids for said zinc salts include straight-chain carboxylic acids, and useful organic carboxamides include formamide.

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Dollimore et al. J. of Inorganic Nuclear Chemistry 29, 621-627 (1967).
Djega-Mariabassou et al. Bull. Soc. Chim. France, 9, 3166-3173 (1971).

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