Process for preparing aminopropylalkoxysilanes in the...

C - Chemistry – Metallurgy – 07 – F

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C07F 7/10 (2006.01) C07F 7/18 (2006.01)

Patent

CA 2159695

The invention relates to a process for preparing amino- propylalkoxysilanes of the general formula R2R3NCH2CHR4CH2Si(OR)3-n(R1)n (I) by reaction of hydrogensilanes of the general formula HSi(OR)3-n(R1)n (II) with an amine of the general formula R2R3NCH2CR4=CH2 (III), where R and R1 are alkyl radicals having from 1 to 8 carbon atoms and n is equal to 0 or 1 or 2 and R2 and R3 are hydrogen, alkyl radicals having from 1 to 8 carbon atoms and/or .omega.-alkenyl radicals having from 3 to 8 carbon atoms and R4 is hydrogen or an alkyl radical having from 1 to 8 carbon atoms, in the presence of a rhodium complex catalyst containing organophosphorus ligands. The reaction is here carried out in the presence of a shaped polymeric rhodium complex catalyst containing organosiloxanemonophenylphosphine ligands. In addition, the invention relates to the use of shaped polymeric rhodium complex catalysts for the preparation of aminopropylalkoxysilanes.

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