METHOD FOR PRODUCING ACYLUREA-MODIFIED POLYISOCYANATE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain an acylurea-modified polyisocyanate hardly causing discoloration, and having properties nearly equal to an allophanate-modified polyisocyanate having a low viscosity. SOLUTION: The method for producing the acylurea-modified polyisocyanate composition includes using a carboxy group-containing compound (A) comprising a monocarboxylic acid, an organic polyisocyanate (B) comprising an aliphatic or alicyclic diisocyanate, and a catalyst poison (D) for stopping the reaction for forming acylurea using a specific metal salt catalyst as a catalyst for acylurea-formation. COPYRIGHT: (C)2011,JPO&INPIT