Preparation of water-insoluble carboxymethyl cellulose absorbent

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

1978-05-17

1980-04-29

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 88, 536 98, C08B 1120

Patent

active

042007372

ABSTRACT:
A process for the preparation of substantially water-insoluble, particulate sodium carboxymethyl cellulose, suitable for use as an absorbent in tampons and other catamenial devices, or the like. The process involves treating solid, water-soluble sodium carboxymethyl cellulose having a degree of substitution of at least 0.4 with hydrogen chloride gas and heating the carboxymethyl cellulose, either after the hydrogen chloride treatment or concurrently therewith, to produce a cross-linked, insoluble, partially acid form carboxymethyl cellulose suitable for absorbent applications.

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