Patent ID: 6894082

Claim:
A latent foamable composition, comprising: (a) a matrix component; and (b) a latent foaming agent, wherein upon exposure to conditions sufficient to cause the latent foaming agent to foam, at a concentration of 2 phr the composition is capable of increasing in size in at least one direction by 8%, wherein R 1 is H, C 1-4 alkyl, with or without interruption or substitution by oxygen, sulfur, and nitrogen, R 2 is C 1-24 alkyl, with or without interruption or substitution by oxygen, sulfur, nitrogen, aralkyl or C 2-24 alkenyl, X is carbon or sulfur, Z is a single bond or double bond, a is 0 or 1, m is 0-4, and n is 1-4.