Foams of high thermal stability

摘要

The invention relates to foams of high thermal stability, to the production thereof from organic polyisocyanates and polyepoxides, and to the use of the foams.

主权项

1. A high temperature resistant foam obtained by reaction of
a) at least one organic polyisocyanate with b) at least one organic compound having at least two epoxide groups, in such an amount as corresponds to an equivalent ratio of 1.2:1 to 500:1 for isocyanate groups to epoxide groups, e) optionally in the presence of auxiliary and additive agents, wherein the reaction is carried out in the presence of formic acid as a blowing agent and optionally further chemical and/or physical blowing agents T) and an isocyanate/epoxide reaction catalyst f).