发明名称 |
PROCESS FOR MODIFYING COAL TAR MATERIALS |
摘要 |
The present invention relates to a process for decreasing and modifying the quinoline-insoluble content (Q.I.) of coal-tar materials; and comprises extracting the coal-tar material with a solvent, where the solvent contains at least one of n-methyl-2-pyrrolidone and the wash oil fraction of coal-tar distillate. Pitches with a diminished Q.I. content, lower viscosity and lower average Q.I. particle size, may be prepared from coal-tar materials which have been so treated. |
申请公布号 |
DE3275737(D1) |
申请公布日期 |
1987.04.23 |
申请号 |
DE19823275737 |
申请日期 |
1982.06.29 |
申请人 |
DOMTAR INC. |
发明人 |
CUKIER, SAMUEL;KREMER, HENRY A.F.L. |
分类号 |
C10C1/18;(IPC1-7):C10C1/18 |
主分类号 |
C10C1/18 |
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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