Patent ID: 8580887

Claim:
A high-functionality polyisocyanate comprising urethane groups and obtainable by reacting at least one tertiary di- or trialkanolamine (A), with at least one polyisocyanate (B), having a functionality of more than 2, under reaction conditions under which urethane groups are formed between (A) and (B), with the proviso that the molar ratio of NCO groups to OH groups between (B) and (A) is at least 4:1 and said high-functionality polyisocyanate has an NCO content of at least 11.8 by weight and wherein the polyisocyanate (B) comprises polyisocyanates which comprise isocyanurate groups, are based on 1,6-hexamethylene diisocyanate, and have a viscosity of 600-3000 mPa*s.