| 发明名称 |
SULFITE SOFTWOOD BASED CELLULOSE TRIACETATE FOR LCD FILMS |
| 摘要 |
The invention provides a way of using cellulose triacetate (CTA) made from softwood pulp to make films suitable for use in liquid crystal displays (LCDs). It has been surprisingly found that a combination of certain additives in the film casting dope and of metal and sulfur content of the CTA allow a softwood CTA to exhibit peeling characteristics from the casting substrate that are similar to those of lint-based CTA of similar sulfur content. The additives include a combination of acid scavengers and chelating agents. |
| 申请公布号 |
US2014150691(A1) |
申请公布日期 |
2014.06.05 |
| 申请号 |
US201414182606 |
申请日期 |
2014.02.18 |
| 申请人 |
Eastman Chemical Company |
发明人 |
Godfrey Darryl Aubrey;Reitfort Laurel Leigh |
| 分类号 |
C08L1/12;C08J5/18 |
主分类号 |
C08L1/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A dope for making a solvent-cast film comprising:
(a) cellulose triacetate made from sulfite-process softwood pulp and having less than 35 ppm of sulfur and less than 2 weight percent of xylose, both based on the weight of the cellulose triacetate, and a molar ratio of metals to sulfate of at least 3:1; (b) an acid scavenger; (c) a chelating agent; and (d) a solvent.
|
| 地址 |
Kingsport TN US |
