Process for reducing the viscosity of cellulose ethers by means

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

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536 85, C08B 1120

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043169821

ABSTRACT:
This invention relates to a process for reducing the viscosity of cellulose ethers by reacting a water-soluble cellulose ether with ozone in the presence of water, wherein said cellulose ether which is moist with water and has a dry content of from 20 to 95% by weight is reacted with an ozone/oxygen mixture or with an ozone/air mixture at a temperature of about 0.degree. to 60.degree. C.

REFERENCES:
patent: 2238912 (1941-04-01), McHard et al.
patent: 2422572 (1947-06-01), Lilienfeld
patent: 2512338 (1950-06-01), Klug et al.
patent: 2572559 (1951-10-01), Chittum
patent: 2895891 (1959-07-01), Miller
patent: 2912431 (1959-11-01), Leonard et al.
patent: 3138564 (1964-06-01), Borunsky
patent: 3296248 (1967-01-01), Mitchell
patent: 4034764 (1977-07-01), Rainer et al.
patent: 4061859 (1977-12-01), Cheng
Simonescu et al., "Study of the Grafting of Carboxymethy Cellulose with Acrylonitrile" published in Faserforschung und Textiltechnik 13, 1962, No. 2, pp. 70-79.
Journal of Polymer Science, vol. 4, 1966, pp. 2683-2703.
"Ullmann's Encyklopadie der technischen Chemie", Verlag Urban and Schwarzenberg, Munich/Berlin, 3rd Edition, 1964, vol. 15, pp. 98-103.
Journal of Polymer Science, Part A-1, vol. 4, 1966, pp. 2683 to 2703, A. A. Katai et al.
Abstracts Bulletin of the Institute of Paper Chemistry, vol. 34, 1964, No. 4403, J. Alfoldi et al.

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