Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1974-07-12
1976-08-10
Griffin, Ronald W.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 85, C08B 11193, C08B 1120
Patent
active
039741397
ABSTRACT:
The invention relates to diethylaminohydroxypropyl derivatives of cellulose I or II having maximum weight percentage of nitrogen of 1.6 and 6.3 respectively, and having the power to sorb 7.5 - 14 and 11.5 - 36 per cent of water, respectively, at a temperature of 20.degree.C and a relative humidity of 63 per cent. The invention relates also to the method for preparing these cellulose derivatives which consists in treating diethylaminohydroxypropyl derivatives of cellulose I or II having maximum weight percentage of nitrogen of 1.6 and 6.3 respectively and having the power to sorb a maximum of 7.3 or 11 per cent of water respectively, at a temperature of 20.degree.C and relative humidity of 63 percent, with acetic acid or with its aqueous solutions, taking not less than 0.1 mole of acetic acid per mole of diethylaminohydroxypropyl groups. The proposed derivatives of cellulose have highly accessible structure, increased reactivity and lowered chromacity. They can be used in various branches of science and technology in the capacity of ion-exchange materials, for example, in separation and purification of biochemical objects, in the capacity of complexing agents, for example, in purification and concentration of metals, in the capacity of catalysts, etc..
REFERENCES:
patent: 1834040 (1931-12-01), Ascherl et al.
patent: 2118664 (1938-05-01), Bradshaw
Chemical Abstracts, vol. 75, No. 12, Sept. 20, 1971, p. 78304v.
Bikales et al., Cellulose and Cellulose Derivatives, Part V, Wiley-Interscience, N.Y., N.Y., 1971 p. 748.
Chemical Abstracts, vol. 51, No. 10, May 25, 1957, pg. 7613h.
Chemical Abstracts, vol. 71, No. 2, July 14, 1969, pg. 4395w.
Chemical Abstracts, vol. 74, No. 24, June 14, 1971, pg. 127,289.
Chemical Abstracts, vol. 74, No. 24, June 14, 1971, p. 127,829k.
Lesene Iolanta Vladimiro
Musnitskas Juozas-Romanas Juozo
Noreika Rimas-Kazimeras Mechislovo
Zdanavichjus Ionas Iona
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