RIGID FOAMS BASED ON PROCYANIDIN- AND/OR PRODELPHINIDIN-TYPE TANNINS AND PREPARATION METHOD THEREOF

摘要

The invention relates to the use of at least one procyanidin- and/or prodelphinidin-type tannin that is free from prorobinetidin- and/or profisetinidin-type tannin and mixed with furfuryl alcohol in order to produce a polymerisation reaction for the preparation of rigid foams, said procyanidin- and/or prodelphinidin-type tannin being, in particular, pine bark tannin.