Method of making amide modified carboxyl-containing...

Details Method of making amide modified carboxyl-containing... Method of making amide modified carboxyl-containing...

C - Chemistry, Metallurgy

08

B

C08B 11/15 (2006.01) B01F 17/00 (2006.01) C08B 11/14 (2006.01) C08B 11/20 (2006.01) C08B 31/12 (2006.01) C08B 37/00 (2006.01) C08L 1/08 (2006.01) C08L 3/04 (2006.01) C08L 5/00 (2006.01)

Patent

CA 2160542

The invention pertains to a process for the amidation of a material having at least one carboxyl-containing polysaccharide. The provided process involves a first step in which the carboxyl groups are reacted with an ammonium donor of the general formula >NH to form the corresponding polysaccharide carboxyl ammonium salt, and a second step in which the polysaccharide carboxyl ammonium salt is heated so as to convert the ammonium groups into the corresponding amimo groups. The invention also pertains to fatty amide modified carboxyl-containing polysaccharides, and particularly to fatty amide modified carboxymethyl cellulose. The products in accordance with the invention can be widely employed, e.g. in the field of biodegradable platics, as anti-redeposition agents for synthetic fibres, as polymeric emulsifiers, as pigment dispersing agents, in cosmetic applications, as thickeners, as oil drilling fluids, as superabsorbers, and in mineral processing.

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