Patent ID: 9000062
Filing Date: 2015-04-07
Classification: B32B,C08G,Y10T

Abstract:
1. A polyurethane foam having a density of 90 to 180 kg/m 3 and a compressive strength of from 20 to 95 kPa comprising the reaction product of a) at least one organic polyisocyanate and/or modified organic polyisocyanate, wherein the least one organic polyisocyanate and/or modified organic polyisocyanate is based on diphenylmethane diisocyanate and/or polyphenyl polymethylene polyisocyanate, and b) an isocyanate-reactive component comprising: formed in the presence of c) a catalyst, d) from 1 to 5 weight %, based on total weight of b) to e), of water, and e) optionally, auxiliaries and/or addition agents, at an NCO group to isocyanate-reactive group ratio of from 0.9:1 to 1:0.9 in which the ratio of the number of urea groups formed to the number of urethane groups formed is from 1:1 to 2.5:1.