Inventors:
James Ahnemiller - Middlebury CT
Assignee:
Uniroyal, Inc. - New York NY
International Classification:
C08J 910
Abstract:
A foamable and simultaneously curable polyester composition is provided. The composition consists essentially of the following (all being in parts by weight): (a) 100 parts liquid unsaturated polyester resin, (b) 0. 5 to 10 parts monosubstituted sulfonyl hydrazide having the formula RSO. sub. 2 NHNH. sub. 2, wherein R is C. sub. 1 -C. sub. 12 alkyl, C. sub. 5 -C. sub. 6 cycloalkyl, C. sub. 7 -C. sub. 10 aralkyl, phenyl, naphthyl, or phenyl substituted with halogen, C. sub. 1 -C. sub. 12 alkyl or C. sub. 1 -C. sub. 12 alkoxy, (c) 0. 1 to 5. 0 parts of a promoter, said promoter consisting essentially of a mixture of organic heavy metal salt and organic alkali metal salt, wherein the heavy metal/alkali metal molar ratio is from 10/1 to 1/10. (d) 0 to 2 parts surfactant, (e) 0 to 250 parts of filler, and (f) 0. 3 to 5 parts of a cross-linking initiating compound selected from organic peroxides and organic hydroperoxide.