Rigid foams of tannins type procyanidin or prodelphinidin and their method of preparation

摘要

Use of at least one type of tannin procyanidin and / or prodelphinidin, devoid of tannin type prorobinetidine and / or profisetinidine, in a mixture with of furfuryl alcohol for the implementation of a polymerization reaction for the preparation of the rigid foams, said tannin type procyanidin and / or prodelphinidin being in particular the tannin of pine bark.