Method of preparing carbonaceous pitch
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United States of America Patent
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May 27, 1986
Grant Date -
N/A
app pub date -
May 17, 1984
filing date -
Feb 13, 1984
priority date (Note) -
Expired
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Abstract
A method of preparing an carbonaceous pitch, including the steps of: subjecting a raw material oil to thermal cracking conditions while removing cracked, light hydrocarbon components to obtain a pitch product containing at least 5 weight % of mesophase and not more than 10 weight % of light hydrocarbon components with a boiling point at 60 mmHg of 300.degree. C. or less and having a softening point of between 160.degree. and 220.degree. C., the raw material oil being composed mainly of a residual oil which has a boiling point of 350.degree. C. or more and which is derived from a naphthene base petroleum crude; and removing the mesophase from the pitch product to obtain a substantially mesophase-free carbonaceous pitch.
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