Process for the preparation of highly concentrated...

Details Process for the preparation of highly concentrated... Process for the preparation of highly concentrated...

C - Chemistry, Metallurgy

07

C

C07C 233/49 (2006.01) C07C 227/08 (2006.01) C07C 231/12 (2006.01) C07C 231/22 (2006.01) C07C 233/36 (2006.01)

Patent

CA 2174683

The invention relates to a process for the preparation of highly concentrated free-flowing and pumpable aqueous solutions of betaines by quaternization of compounds which contain tertiary amine nitrogen with .omega.-halo carboxylic acids by known processes, characterized in that 0.5 - 5 % by weight, based on final product, of a viscosity-reducing compound from the group of the citric acid salts is added to the reaction mixture before or during the quaternization reaction.

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