Preparation of water-insoluble carboxymethyl cellulose absorbent

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

1982-04-19

1983-07-26

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536 88, C08B 1120

Patent

active

RE0313238

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.

REFERENCES:
patent: 1904406 (1933-04-01), Callahan
patent: 2639239 (1953-05-01), Elliott
patent: 2766137 (1956-10-01), Ashton et al.
patent: 2772999 (1956-12-01), Masci et al.
patent: 3379720 (1968-04-01), Reid
patent: 3379721 (1968-04-01), Reid
patent: 3391135 (1968-07-01), Ouno et al.
patent: 3731686 (1973-05-01), Chatterjee
patent: 4044766 (1977-08-01), Kaczmarzyk et al.
patent: 4061859 (1977-12-01), Cheng
patent: 4107426 (1978-08-01), Gordon

Affiliated with

Also associated with

Rating

Preparation of water-insoluble carboxymethyl cellulose absorbent does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of water-insoluble carboxymethyl cellulose absorbent, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of water-insoluble carboxymethyl cellulose absorbent will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2217291