Method of producing alkali-soluble cellulose derivative

Details Method of producing alkali-soluble cellulose derivative Method of producing alkali-soluble cellulose derivative

1982-01-20

1983-09-13

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

C08B 1506

Patent

active

044043694

ABSTRACT:
An alkali-soluble cellulose derivative is produced by treating cellulose with liquid ammonia having urea dissolved therein, removing the ammonia, resulting in cellulose having urea distributed therethrough, and heating the thus obtained cellulose-urea to cause reaction between the urea and cellulose and form alkali-soluble cellulose carbamate. This cellulose carbamate can be precipitated from alkaline solution in the form of cellulose carbamate film or fiber.

REFERENCES:
patent: 1173336 (1916-02-01), Bonner
patent: 1771461 (1930-07-01), Lilienfeld
patent: 2007950 (1935-07-01), Dreyfus
patent: 2073052 (1937-03-01), Dreyfus
patent: 2129708 (1938-09-01), Schreiber
patent: 2134825 (1938-11-01), Hill et al.
patent: 2145273 (1939-01-01), Peterson et al.
patent: 2294925 (1942-09-01), Miller et al.
patent: 4124758 (1978-11-01), Watts et al.

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