Blowing agent composition

Details Blowing agent composition Blowing agent composition

1986-03-25

1987-04-07

Foelak, Morton

Compositions

Preservative agents

Anti-corrosion

521 92, 521 93, 521 94, 521 95, 521909, C08J 910, C09K 300

Patent

active

046559620

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.

REFERENCES:
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patent: 3846350 (1974-11-01), Schentzer
patent: 4312776 (1982-01-01), Puri et al.
patent: 4369126 (1983-01-01), Bathgate
patent: 4425442 (1984-01-01), Sato et al.
patent: 4438223 (1984-03-01), Hunter
patent: 4444679 (1984-04-01), Rowland et al.
patent: 4554294 (1985-11-01), Hunter et al.
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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