| 发明名称 |
Catalytic method for making pitch |
| 摘要 |
A method for making pitch from petroleum bottoms fractions by air blowing in the presence of about 1 percent by weight of metallic sodium. The method reduces processing time by about one-third and the product is of the desired high density of about 1.25 g/ml. to above 1.30 g/ml. at 25 DEG C.
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| 申请公布号 |
US4202755(A) |
申请公布日期 |
1980.05.13 |
| 申请号 |
US19780957762 |
申请日期 |
1978.11.03 |
| 申请人 |
WITCO CHEMICAL CORP |
发明人 |
NICKLES, HARRY B;SOLOMON, JACK M;SPIEGELMAN, GERALD H |
| 分类号 |
C10C3/04;(IPC1-7):C10C3/04 |
主分类号 |
C10C3/04 |
| 代理机构 |
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代理人 |
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| 地址 |
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