The use of n-(aminoalkyl) pyrrolidines as catalysts for the...

Details The use of n-(aminoalkyl) pyrrolidines as catalysts for the... The use of n-(aminoalkyl) pyrrolidines as catalysts for the...

C - Chemistry, Metallurgy

08

G

C08G 18/20 (2006.01) C08J 9/00 (2006.01)

Patent

CA 2059044

The present invention relates to a process for preparing polyisocyanate polyaddition products by reacting (a) polyisocyanates with (b) relatively high molecular weight compounds containing at least two isocyanate-reactive hydrogen atoms and (c) chain-extending agents, in the presence of (d) N-(aminoalkyl)pyrrolidine catalysts corresponding to formula (I) (see Formula I) in which R is a C2-12 alkylene group (optionally containing 0 or N atoms but not isocyanate-reactive groups) and R' is hydrogen or a C1-4 alkyl group, (e) optionally, other known catalysts, and (f) other known additives.

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