发明名称 |
Method of preparing electrode pitches |
摘要 |
A method for the preparation of electrode pitch which includes mixing a highly aromatic residual fraction from petroleum raw materials with a coal tar pitch in a weight ratio of from 1:9 to 9:1 and heating the mixture at a temperature of above 350 DEG C. until a pitch is produced with a softening point above 60 DEG C., an insolubility in anthracene oil and toluene is over 30 percent and a coking value of at least 50 corresponding to binder pitch for the production of carbon, graphite electrodes and refractory material.
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申请公布号 |
US3970542(A) |
申请公布日期 |
1976.07.20 |
申请号 |
US19740524147 |
申请日期 |
1974.11.15 |
申请人 |
CINDU N.V. |
发明人 |
BONGERTMAN, PIETER JAN WILLEM |
分类号 |
C04B35/532;C10C3/00;(IPC1-7):C10C3/00 |
主分类号 |
C04B35/532 |
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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