Method for preparation of amphoteric guar gum derivatives

Details Method for preparation of amphoteric guar gum derivatives Method for preparation of amphoteric guar gum derivatives

C - Chemistry, Metallurgy

08

B

C08B 37/00 (2006.01) C08L 5/14 (2006.01)

Patent

CA 2266171

A method for the preparation of high DS amphoteric guar gum derivatives comprising reacting guar gum in an alcohol medium with alkaline base and a cationic reagent and then in the same alcohol medium with an excess of alkaline base and an anionic reagent, the cationic reagent containing an amino, ammonium, imino, sulfonium or phosphonium group and the anionic reagent containing a carboxyl, sulfonate, sulfate, phosphate or phosphonate group. Each of the cationic and anionic groups having a DS of from about 0.05 to 1 and preferably 0.1 to 1.

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