Water-soluble cellulose mixed ethers which contain a phosphonome

Details Water-soluble cellulose mixed ethers which contain a phosphonome Water-soluble cellulose mixed ethers which contain a phosphonome

1981-10-20

1982-11-09

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536 91, C08B 11193

Patent

active

043585876

ABSTRACT:
Disclosed are water-soluble cellulose mixed ethers which contain (a) at least one substituent from the group comprising alkyl, hydroxyalkyl, carboxyalkyl, sulfoalkyl and dialkylaminoalkyl and (b) a phosphonomethyl substituent and which has a DS of the first substituent(s) other than hydroxyalkyl from about 0.05 to 2.95 and/or an MS.sub.HAlk from about 0.5 to 6 and a DS.sub.PM from about 0.005 to 0.8. Also disclosed is a process for preparing such cellulose mixed ethers in which, per mole of the cellulose, from about 0.1 to 25 moles of the etherifying agent(s) for producing the substituent(s) under (a), from about 0.05 to 2 moles of halogenomethane phosphonate ions as the etherifying agent for producing the substituent under (b) and from about 0.8 to 12 moles of hydroxide ions are caused to react in a reaction mixture comprising up to about 30 parts by weight, per part by weight of the cellulose, of a mixture which is composed of an inert, preferably water-miscible organic solvent and H.sub.2 O and in which the proportion of water ranges from about 3 to 40 percent by weight.

REFERENCES:
patent: 2979374 (1961-04-01), Drake et al.
patent: 3388118 (1968-06-01), Tesoro
patent: 3553194 (1971-01-01), Verbanac et al.
patent: 3634394 (1972-01-01), Andreassen
patent: 3652540 (1972-03-01), Determann et al.
patent: 4020271 (1977-04-01), Chatterjee
patent: 4310663 (1982-01-01), Hilbig et al.
"Phosphonomethylation of Cotton", by G. L. Drake, W. A. Reeves, J. D. Guthrie, published in Textile Research Journal, Mar. 1959, pp. 270-275.

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