Process for the manufacture of water-absorbing cellulose ethers

Details Process for the manufacture of water-absorbing cellulose ethers Process for the manufacture of water-absorbing cellulose ethers

1976-05-03

1978-01-10

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

260 17A, 536 87, 536 89, 536 98, C08B 1100, C08B 1120, C08B 1510

Patent

active

040680681

ABSTRACT:
This invention relates to an improvement in the process for the manufacture of water-adsorbing but at least partially water-insoluble cellulose ethers in which cellulose is alkalized in a liquid reaction medium and reacted with an etherification agent in a manner such that an at least preponderantly water-soluble cellulose ether would be obtained in the case of a mere etherification process and in which, prior to, simultaneously with, or after the etherification process, a reaction is effected with a crosslinking agent which is polyfunctional towards cellulose in an alkaline reaction medium,
The improvement comprising employing bis(acrylamido)-acetic acid as the crosslinking agent.

REFERENCES:
patent: 3077468 (1963-02-01), Geurden
patent: 3272640 (1966-09-01), Geurden
patent: 3589364 (1971-06-01), Dean et al.
patent: 3723413 (1973-03-01), Chatterjee et al.
patent: 3936441 (1976-02-01), Holst et al.

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