Patent ID: 8604091

Claim:
A foamable composition for forming a non-isocyanate foam comprising: a first component including at least one amide-based oligomer containing pendant carboxylic acid groups and no isocyanate groups, wherein said at least one amide-based oligomer has the following formula: wherein R 1 is selected from alkyl, cycloalkyl and aromatic, wherein R 2 is selected from a polyether, a polyester, a polyether-polyester blend, a caprolactone, alkyl, cycloalkyl, and aromatic, wherein R 3 is selected from glycerin, oligomers of glycerin, alkyl, aromatic, and cycloaliphatic, wherein each “COOH” represents a potential location of pendant —COOH groups, provided that at least one of R 1 , R 2 and R 3 comprise at least one —COOH, wherein X and Z are independently selected from NH or O, and wherein n is an integer from about 1 to about 50; and a second component including a polyfunctional aziridine cross linking agent that crosslinks with carboxylic acids groups rapidly at or about room temperature, wherein at least one of said first component and said second component contains a blowing agent, and wherein the first and second components are isolated from one another until a foaming reaction is desired.