Continuous manufacture of silicone copolymers via static...

Details Continuous manufacture of silicone copolymers via static... Continuous manufacture of silicone copolymers via static...

C - Chemistry, Metallurgy

08

G

C08G 77/38 (2006.01) B01J 19/18 (2006.01) C08F 8/00 (2006.01) C08G 77/04 (2006.01) C08G 77/12 (2006.01) C08G 77/46 (2006.01)

Patent

CA 2429601

A continuous process for the manufacture of silicone copolymer utilizing at least one static mixing plug flow reactor, and optionally two static mixing plug flow reactors in a series or parallel. Silicone copolymers produced in accordance thereof are substantially free of unreacted hydrogen siloxane starting material and may be used without further purification. The static mixing plug flow reactor contains static mixing elements capable of creating eddies and vortices of sufficient intensity that a biphasic liquid mixture such as a hydrogen siloxane fluid and an polyether olefinic reactant, undergoes shearing of the droplets of each material so that one phase disperses into another to provide intimate contact between the two phases to allow the reaction to proceed.

L'invention porte sur un procédé de production en continu de copolymères de silicone utilisant un réacteur mélangeur statique à écoulement piston, ou facultativement deux, montés en série ou en parallèle. Les polymères ainsi produits sont sensiblement exempts du matériau de départ, le siloxane d'hydrogène, et peuvent être utilisés sans autre purification. Le réacteur mélangeur statique à écoulement piston comporte des éléments mélangeurs statiques créant des turbulences et des tourbillons suffisament intenses pour qu'un mélange à deux phases tel que du siloxane d'hydrogène et un réactif oléofinique de polyéther subisse le cisaillement des gouttelettes de chacun des matériaux si bien que les phases se dispersent l'une dans l'autre et sont en contact intime entre elles, ce qui permet la réaction.

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