Process for the manufacture of swellable cellulose ethers

Details Process for the manufacture of swellable cellulose ethers Process for the manufacture of swellable cellulose ethers

1976-09-23

1978-02-21

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

128290R, 128296, 536 57, 536 87, C08B 1100, C08B 1510

Patent

active

040752798

ABSTRACT:
This invention relates to an improvement in the process for the manufacture of water-absorbing, but largely water-insoluble cellulose ethers, wherein cellulose is etherified with a halogen fatty acid in an alkaline medium to which organic solvents may be added, to such an extent that without a further reaction a water-soluble cellulose ether would be produced, and wherein, prior to, during, or after etherification, a further reaction is carried out with a cross-linking agent which is polyfunctional towards cellulose in an alkaline reaction medium, the improvement comprising that chips of regenerated cellulose film are used as cellulose.

REFERENCES:
patent: 2026865 (1936-01-01), Campbell et al.
patent: 2150205 (1939-03-01), Cochran et al.
patent: 3589364 (1971-06-01), Dean et al.
patent: 3732867 (1973-05-01), Money
patent: 3758457 (1973-09-01), Broeck et al.
patent: 3884907 (1975-05-01), Laurance et al.
patent: 3936441 (1976-02-01), Holst et al.
patent: 3939836 (1976-02-01), Tunc
patent: 3976074 (1976-08-01), Fitzgerald et al.

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