Method for dissolving cellulose in organic solvents and resultin

Details Method for dissolving cellulose in organic solvents and resultin Method for dissolving cellulose in organic solvents and resultin

1984-12-26

1986-07-01

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

C08L 100

Patent

active

045977984

ABSTRACT:
Method for preparing a cellulose solution wherein cellulose is dissolved in a mixed solvent which is consisted essentially of an aliphatic quaternary ammonium halide, containing a lower alkyl group and a halogen, and an organic solvent capable of dissolving the halide. The dissolving process must be carried out within a heating temperature range, between 50.degree. C. and 100.degree. C., particularly preferable between 70.degree. C. and 95.degree. C., so as to keep the degree of polymerization of the cellulose at a high level.

REFERENCES:
patent: 1771462 (1930-07-01), Lilienfeld
patent: 1943176 (1934-01-01), Graenacher
patent: 2070999 (1937-02-01), Powers
patent: 4416698 (1983-11-01), McCorsley

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