Patent ID: 8507617

Claim:
A composition comprising: a polyformal-isocyanate prepolymer comprising the reaction products of reactants comprising a polyformal polyol and a first diisocyanate; and a curing agent comprising an amine; wherein the polyformal polyol comprises a polyformal polyol selected from a polyformal polyol of Formula (4), a polyformal polyol of Formula (5), and a combination thereof: wherein: w is an integer from 2 to 40; z is an integer from 3 to 6; each R 3 is independently selected from C 2-6 alkanediyl; each R 4 is independently selected from hydrogen, C 1-6 alkyl, C 7-12 phenylalkyl, substituted C 7-12 phenylalkyl, C 6-12 cycloalkylalkyl, substituted C 6-12 cycloalkylalkyl, C 3-12 cycloalkyl, substituted C 3-12 cycloalkyl, C 6-12 aryl, and substituted C 6-12 aryl; and E represents the core of an m-valent parent polyol E(OH) z .