Method for preparing tin complex curing catalyst

Details Method for preparing tin complex curing catalyst Method for preparing tin complex curing catalyst

C - Chemistry, Metallurgy

07

F

260/436.2

C07F 7/22 (2006.01) B01J 31/12 (2006.01) B01J 31/22 (2006.01)

Patent

CA 1293736

METHOD FOR PREPARING TIN COMPLEX CURING CATALYST Abstract Catalysts containing tin complexes such as di- butyltin bis(acetylacetonate), useful as curing catalysts for room temperature vulcanizable compositions, are prepared by the reaction of a dialkyltin oxide with a dione and a polyalkoxysilane at a temperature in the range of about 20-80°C. At least 2 moles of dione and preferably at least 2 moles of polyalkoxysilane are employed per gram-atom of tin. The polyalkoxysilane removes water of reaction, driving the reaction to completion.

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