发明名称 |
Process for forming shaped cellulosic product |
摘要 |
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.
|
申请公布号 |
US4352770(A) |
申请公布日期 |
1982.10.05 |
申请号 |
US19810259670 |
申请日期 |
1981.05.01 |
申请人 |
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION |
发明人 |
TURBAK, ALBIN F.;EL-KAFRAWY, ADEL;SNYDER, JR., FRED W.;AUERBACH, ANDREW B. |
分类号 |
C08B1/00;D01F2/02;(IPC1-7):D01F2/00 |
主分类号 |
C08B1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|