Process for the production of zwitterionic polyamines

Details Process for the production of zwitterionic polyamines Process for the production of zwitterionic polyamines

C - Chemistry, Metallurgy

08

G

C08G 65/26 (2006.01) B01J 10/02 (2006.01) C08G 65/334 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2384138

A process for the production of zwitterionic polyamines by sulfation of alkoxylated and quaternized amines and subsequent neutralization which comprises continuously sulfating an alkoxylated and quaternized polyamine having at least two tertiary or quaternary amino nitrogen atoms in the molecule and containing at least one quaternized nitrogen atom, in the form of a film having a thickness of from 100 µm to 4 mm in the absence of a solvent with a sulfur trioxide-containing inert gas at a temperature of up to 90 ~C.

L'invention concerne un procédé de production de polyamines zwittérioniques par sulfatation d'amines alcoxylées et quaternarisées, puis par neutralisation. Ce procédé consiste à sulfater, de manière continue, à l'aide d'un gaz inerte contenant du trioxyde de soufre à une température supérieure à 90 ·C, une polyamine alcoxylée et quaternarisée qui possède au moins deux atomes d'amino azote tertiaires et quaternaires dans la molécule, et qui contient au moins un atome d'azote quaternarisé, sous forme de couche mince présentant une épaisseur de 100 µm à 4 mm en l'absence de solvant.

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