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

Claim 15:
16. A thermoset non-isocyanate polyurethane (NIPU) foam composition comprising a reaction product of:
(a) a reaction product of a bio-derived polycyclic carbonate having a plurality of cyclic carbonate functional groups, a bio-derived polyamine having a plurality of amine functional groups, and a foaming ingredient configured to produce the NIPU foam composition, wherein the reaction product includes the presence of acids and water and is cured at a temperature and wherein the foaming ingredient comprises a carbonate-based chemical foaming blowing agent that decomposes in the presence of the acids and water and the decomposition is accelerated in the presence of the acids and water, and wherein the polycyclic carbonate and the polyamine form a urethane bond and characteristics of the reaction product are tunable by changing cure temperature and acid composition;
(b) a catalyst reacted with the polycyclic carbonate and the polyamine prior to combining with the foaming ingredient;
(c) an accelerant and a surfactant provided as additional foaming ingredients configured to generate the NIPU foam having desired properties;
wherein the plurality of cyclic carbonate functional group and the plurality of amine functional group are provided in a ratio in a range from 4:1 to 1:4, and
wherein the desired properties of the NIPU foam include a density of the NIPU foam from 1 to 400 kg/m3 and a Shore A hardness from 1 to 80.