Polyhydantoin prepolymers and aspartate-functional use in coating compositions.

摘要

The present invention CONCERNS hydantoin prepolymers aspartate FUNCTIONAL prepared by reacting a polyisocyanate having an functionality of at least 1.8 WITH A polyaspartate corresponding to the formula wherein X represents an organic group which has a VALENCIA NY ES INERT isocyanate groups at a temperature of 100 CO MINOR YR YR} {Sub.1 SUB {2} may be the same or different and represent optionally substituted hydrocarbon radicals, R SUB {3} {SUB YR, 4} MAY be the same or different and represent hydrogen or SOR iNERT ORGANIC isocyanate groups at a temperature of 100 LESS CO n has a value of 2 to 6, preferably 2 to 4 and more preferably 2. The present invention is also directed to compositions suitable for the production of coatings, adhesives, elastomers, potting compounds or composite matrices containing these polyhydantoin prepolymers in combination with POLIISOCIANAT OS OPTIONALLY BLOCKED.