Preparation of water-insoluble carboxymethyl cellulose...

Details Preparation of water-insoluble carboxymethyl cellulose... Preparation of water-insoluble carboxymethyl cellulose...

C - Chemistry, Metallurgy

08

B

252/23

C08B 11/20 (2006.01) A61L 15/28 (2006.01) C08B 15/00 (2006.01)

Patent

CA 1123415

PREPARATION OF WATER-INSOLUBLE CARBOXYMETHYL CELLULOSE ABSORBENTS ABSTRACT OF THE DISCLOSURE A process for the preparation of a substantially water-insoluble, particulate sodium salt of carboxymethyl cellulose, suitable for use as an absorbent in tampons and other catamenial devices or the like. The process involves heating solid, water-soluble sodium carboxymethyl cellulose, having a degree of substitution of at least 0.4, with carbon dioxide gas to substantially insolubilize the carboxymethyl cellulose and convert it to a form suitable for absorbent applications.

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