Blocked polyisocyanates with improved storage stability

摘要

The present invention is directed to a process for improving the storage stability of a composition which contains (a) a blocked polyisocyanate prepared by blocking the isocyanate groups of an organic polyisocyanate with a blocking agent comprising a di-C1-C12-alkyl and/or -alkoxyalkyl malonate and (b) is free from compounds containing at least two isocyanate-reactive hydrogens, which comprises incorporating a stabilizing amount of a compound having monofunctional reactivity towards isocyanates into the composition. The present invention is also directed to the storage stable composition produced in accordance with the above process.