STORAGE-STABLE, LIQUID CARBODIIMIDE MODIFIED POLYISOCYANATES AND PROCESS FOR THEIR MANUFACTURE

摘要

STORAGE-STABLE, LIQUID CARBODIIMIDE MODIFIED POLYISOCYANATES AND PROCESS FOR THEIR MANUFACTURE of the Invention Storage-stable, liquid carbodiimide-modified polyisocyanates are prepared by condensation of polyisocyanates in the presence of catalytic amounts of phospholine, phospholidine, phospholine oxides and/or phospholidine oxides, said condensation terminated and the products stabilized by means of perchloric acid or trifluoromethanesulfonic acid.