Process for the preparation of highly concentrated...

C - Chemistry – Metallurgy – 07 – C

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C07C 233/47 (2006.01) C07C 227/08 (2006.01) C07C 231/02 (2006.01)

Patent

CA 2129937

The invention relates to process for the preparation of highly concentrated free-flowing aqueous solutions of betaines, which is characterized in that at least one compound of the general formula (I) (see formula I) wherein R, R1, and R2 are each C1-C10 alkyl, optionally substituted with hydroxyl, and n is 1-3, is added to the reaction mixture before or during the quaternization reaction.

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