METHOD FOR PRODUCING POLYISOCYANATE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a polyisocyanate having improved compatibility with various polyols for a coating material and giving an excellent coating film. SOLUTION: The method for producing the polyisocyanate comprises reacting (A) a TDI, (B) a PPG polyol having an Mn=200-2,000, and (C) a 6-20C monool to obtain an isocyanate group-containing urethane prepolymer and subjecting the isocyanate group-containing urethane prepolymer to an isocyanurating reaction. COPYRIGHT: (C)2003,JPO