Blocked polyisocyanates with improved storage stability

Details Blocked polyisocyanates with improved storage stability Blocked polyisocyanates with improved storage stability

C - Chemistry, Metallurgy

08

G

260/453.2

C08G 18/80 (2006.01) C08G 18/10 (2006.01) C08G 18/28 (2006.01)

Patent

CA 1217498

BLOCKED POLYISOCYANATES WITH IMPROVED STORAGE STABILITY ABSTRACT OF THE DISCLOSURE 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.

461153

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