METHOD FOR PRODUCING BLOCKED POLYISOCYANATES AND THE USE THEREOF IN POLYURETHANE LACQUER SYSTEMS

摘要

The prodn. of totally or partly blocked polyisocyanates (I) based on a blocking agent (II) and a polyisocyanate with at least 2 free NCO gps. (III), opt. in the presence of a chain extender, is carried out as a continuous process in the absence of solvent.