Cellulose acetate solution and process for the preparation of th

Details Cellulose acetate solution and process for the preparation of th Cellulose acetate solution and process for the preparation of th

1996-01-19

1997-09-02

Nutter, Nathan M.

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

Organic compounds

Carbohydrates or derivatives

536 76, C08B 306, C08B 322

Patent

active

056633106

ABSTRACT:
A cellulose acetate solution has cellulose acetate in a solvent. The cellulose acetate has an average acetic acid content in the range of 58.0 to 62.5%. In the first embodiment of the invention, the solvent is a mixture of acetone and another organic solvent. The organic solvent is an ether having 3 to 12 carbon atoms, a ketone having 4 to 12 carbon atom, an ester having 3 to 12 carbon atoms, or an alcohol having 1 to 6 carbon atoms. In the second embodiment, the solvent is the ether, the ketone or the ester. Processes for the preparation of the solution and a cellulose acetate film are also disclosed.

REFERENCES:
J.M.G. Cowie et al., Report in Makromol., Chem., The Dissolution and Stability . . . vol. 143, pp. 105-114, 1971.
K. Kamide et al., Textile Machinery Society, Dry Spinning of Cellulose . . . vol. 34, pp. 57-61, 1981.

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