Process and apparatus for continuous hydrosilylation

Details Process and apparatus for continuous hydrosilylation Process and apparatus for continuous hydrosilylation

C - Chemistry, Metallurgy

07

F

C07F 7/18 (2006.01) C08G 77/38 (2006.01) C08G 77/395 (2006.01) C08G 77/46 (2006.01)

Patent

CA 2292923

The invention relates to a continuous process for preparing organomodified polysiloxanes by the transition metal-catalyzed addition of polysiloxanes containing SiH groups onto substances containing C-C multiple bonds, in particular a process for the continuous hydrosilylation of substances containing C-C multiple bonds, which comprises introducing the reactants, in the presence or absence of a homogeneous or heterogeneous catalyst, into a loop-like, heatable and coolable reaction circuit which has a static mixing element and/or a dynamic mixing element to mix starting materials and product formed, leaving the reaction mixture in the reaction circuit until a predetermined degree of conversion has been reached and subsequently transferring the reaction mixture still containing starting materials to a tube reactor to complete the reaction and taking it off via a receiver. In addition, a suitable industrial apparatus for carrying out the process of the invention is described.

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