Patent ID: 11920033
Assignee: 62911255
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A thermoset non-isocyanate polyurethane (NIPU) foam composition comprising:
a reaction product of:
(a) a polycyclic carbonate, having a plurality of cyclic carbonate functional groups, ranging from 5 to 90% of the NIPU foam composition by weight;
(b) a polyamine, having a plurality of amine functional groups, ranging from 5% to 90% of the NIPU foam composition by weight; and
(c) a foaming ingredient configured to produce the NIPU foam composition, the foaming ingredient ranging from 0.5 to 20% of the NIPU foam composition by weight, wherein the foaming ingredient comprises a carbonate-based chemical blowing agent,
wherein the carbonate-based chemical blowing agent decomposes, and the decomposition is accelerated in the presence of acids and water,
wherein the NIPU foam composition has a Shore A hardness from 1 to 80,
wherein the polycyclic carbonate and the polyamine form a urethane bond; and
wherein characteristics of the NIPU foam composition are tunable by changing cure temperature and acid composition.