Process for preparing highly concentrated, free-flowing...

Details Process for preparing highly concentrated, free-flowing... Process for preparing highly concentrated, free-flowing...

C - Chemistry, Metallurgy

07

C

C07C 233/46 (2006.01) C07C 231/12 (2006.01) C07C 233/36 (2006.01) C07C 235/28 (2006.01) C11D 1/90 (2006.01)

Patent

CA 2130400

The invention relates to a process for preparing highly concentrated, free-flowing and pumpable, aqueous solutions of betaines by quaternization of compounds containing tertiary amine nitrogen with .omega.-halocarboxylic acids by known processes, which is characterized in that a) 30 - 100 equivalent-%, based on .omega.-halocarboxylic acid used, of Mg(OH)2 and/or Ca(OH)2 and b) 0 - 70 equivalent-%, based on .omega.-halocarboxylic acid used, of NaOH, KOH, NH4OH are added to the reaction mixture before or during the quaternization reaction.

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