Process for producing a pitch having a low softening point
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United States of America Patent
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Dec 27, 1988
Grant Date -
N/A
app pub date -
Jun 2, 1987
filing date -
Jun 2, 1986
priority date (Note) -
Expired
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Abstract
A process for producing an optically anisotropic pitch for use in the production of high performance carbon fibers, wherein a compound represented by the formula (1) as a raw starting material is mixed with one of heavy oils and subjected to thermal modification: ##STR1## wherein m is an integer of 2 or more; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each represents a hydrogen atom, a methyl group or an ethyl group; and R.sub.5 represents a hydrogen atom or a methyl group. The pitch has a softening point which can be set at discretion and excellent molecular orientation.
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