BLOCKED POLYISOCYANATES

摘要

Blocked polyisocyanates, their preparation and use in one-component coati ng materials. In organic polyisocyanates having at least two isocyanate groups, the isocyanate groups are blocked with OH- acidic cyclic ketones of the general formula (I). The blocked polyisocyanate system of the invention reacts witho ut elimination of the blocking agent and possesses low crosslinking temperature s.