发明名称 |
Method of purifying the starting material for use in the production of carbon products. |
摘要 |
<p>The unwanted components from coal tars should be removed at a certain stage of the process for producing homogeneous spinning pitches which are suitable for use in the production of high-performance carbon fibers from coal tars. The unwanted components can be eliminated from coal tars in a very efficient manner by the following procedures: subjecting the coal tars to distillation or flash distillation so as to separate a heavy component having a boiling point higher than a predetermined temperature, dissolving the heavy component in a monocyclic aromatic hydrocarbon solvent, and subjecting the solution to'filtration or centrifugation.</p> |
申请公布号 |
EP0198471(A2) |
申请公布日期 |
1986.10.22 |
申请号 |
EP19860105174 |
申请日期 |
1986.04.15 |
申请人 |
MARUZEN PETROCHEMICAL CO., LTD. |
发明人 |
TSUCHITANI, MASATOSHI;NAITO, SAKAE |
分类号 |
D01F9/15;C10C1/08;C10C1/16;C10C1/18;C10C3/08;D01F9/155;(IPC1-7):C10C1/18 |
主分类号 |
D01F9/15 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|