Process for forming shaped cellulosic product
AssigneeInternational Telephone and Telegraph Corporation
InventorsAlbin F. Turbak, Adel El-Kafrawy, Fred W. Snyder, Jr., Andrew B. Auerbach
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Abstract
Cellulose is activated by penetration of the cellulose with a polar medium and mixed at a temperature at which no significant degradation occurs with an amide selected from the group consisting of dimethylacetamide, 1-methyl-2-pyrrolidinone and mixtures thereof and from 3 to 15% by weight of lithium chloride. The cellulose is then dissolved in the amide and lithium chloride in the substantial absence of any polar medium other than the amide. Shaped cellulosic products may be formed by reconstituting the cellulose in fiber, sheet or other form.
Claims7
A process of forming a shaped cellulosic product comprising
- dissolving activated cellulose without significant depolymerization thereof in an amide selected from the group consisting of dimethylacetamide, 1-methyl-2-pyrrolidinone and mixtures thereof and from 3 to 15% by weight of the solution of lithium chloride, and
- reconstituting the cellulose to form a shaped cellulosic product therefrom.
Dependencies are inferred from the claim text.