| 发明名称 |
FORMATION OF OPTICALLY ANISOTROPIC PITCHES |
| 摘要 |
<p>An improved process for preparing liquid crystal containing pitches includes extracting carbonaceous isotropic pitches with an organic solvent system which comprises at least one member of the group consisting of dioxane, dimethylacetamide, and tetramethylurea.</p> |
| 申请公布号 |
CA1194445(A) |
申请公布日期 |
1985.10.01 |
| 申请号 |
CA19830429111 |
申请日期 |
1983.05.27 |
| 申请人 |
DU PONT (E.I.) DE NEMOURS AND COMPANY |
发明人 |
DIEFENDORF, RUSSELL J.;VENNER, JOE G. |
| 分类号 |
D01F9/155;C10C3/02;C10C3/08;D01F9/145;(IPC1-7):C10C1/20;C10C1/18 |
主分类号 |
D01F9/155 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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