Process for the production of polyurethanes and a storable...

Details Process for the production of polyurethanes and a storable... Process for the production of polyurethanes and a storable...

C - Chemistry, Metallurgy

08

G

400/101, 402/163

C08G 18/24 (2006.01) C08G 18/14 (1980.01)

Patent

CA 1190694

ABSTRACT OF THE DISCLOSURE Optionally-foamed polyurethanes are produced by reacting polyisocyanates with organic compounds containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight in the range from 400 to 10,000, in the presence of activators corresponding to the general formula Image wherein R1, R2, R3, and R4 may be the same or different and represent C1-C20-alkyl, C5-C7-cycloalkyl, C6-C14-aryl or C7-C30-alkaryl, X and X2 may be the same or different and represent halogen or a radical of the formula -OR5, -SR6 or Image with the proviso that X1 and X2 cannot both represent a halogen atom, R5, R6, and R7 may be the same or different and represent a C1-C20-alkyl, C5-C7-cycloalkyl, C6-C14-aryl or C7-C30-alkaryl and 1?x?4, and, optionally, in the presence of co-catalysts, blowing agents, chain-extending agents having a molecular weight of from 32 to 400 and other known auxiliaries and additives.

413595

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