Hydroxyl-containing organotin catalysts for making...

Details Hydroxyl-containing organotin catalysts for making... Hydroxyl-containing organotin catalysts for making...

C - Chemistry, Metallurgy

08

G

C08G 18/24 (2006.01) C08J 9/00 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2057342

PATENT 122PUS04431 ABSTRACT Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxyl-containing compound are hydroxyl- containing organotins such as, for example, compounds of formulas I-III Image I Image II Image III where R is a C1-C8 alkyl or an aryl group; R1 is a C2-C22 divalent hydrocarbyl group which may contain a hydroxyl substituent; X is a linking group which may be -O- -S- or -O2C-; Y is a hydroxyl-containing C3-C5 alkylene group; Y' is a C1-C9 divalent hydrocarbyl group; Z is divalent organic linking group; and n is 0 or 1. Suitable hydroxyl-containing organotin compounds would also include polymeric organotin compounds prepared by the reaction of a diorganotin oxide or diorganotin dichloride with HSCH2CH(OH)CH2XH, preferably in a 1:0.5-1 molar ratio, where X is -S- or -O-.

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