Cellulose thiocyanate and process for preparing the same

Details Cellulose thiocyanate and process for preparing the same Cellulose thiocyanate and process for preparing the same

1975-02-12

1978-02-28

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

260DIG24, C08B 300

Patent

active

040769186

ABSTRACT:
A process is provided for preparing cellulose thiocyanate by direct reaction of cellulose with thiocyanic acid in the presence of dimethyl formamide, or dimethyl sulfoxide, at elevated temperatures, the thiocyanic acid being formed in situ from a thiocyanate salt and sulfuric acid. The product, cellulose thiocyanate, has a carbon content of from 38% to 44.4%, a nitrogen content of from 0.1% to 6.3%, a sulfur content of 0.23% to 14.5%, and is noninflammable and self-extinguishing.

REFERENCES:
patent: 2086419 (1937-07-01), Hunt et al.
patent: 3527810 (1970-09-01), Pettitt
patent: 3544555 (1970-12-01), Biritz
Klein et al., Industrial and Engineering Chemistry, vol. 50, pp. 80-82 (Jan. 1958).
Carson et al., Journal American Chemical Society, vol. 70, No. 6, June 1948, pp. 2220-2223.
Chemical Abstracts, vol. 16, No. 2, 1/20/22, pp. 340-341.
Chemical Abstracts, vol. 7, No. 12, 6/20/1913, pp. 2112-2113.
Chemical Abstracts, vol. 65, No. 12, 12/5/1966, p. 18823a.

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