Process for producing a pitch having a low softening point

Details Process for producing a pitch having a low softening point Process for producing a pitch having a low softening point

1987-06-02

1988-12-27

Sneed, H. M. S.

Mineral oils: processes and products

Asphalts, tars, pitches and resins; making, treating and...

Chemical modification of asphalt, tar, pitch or resin

208 22, 208 39, 208 40, 208 23, 106284, 1062731, 585 11, 528247, 4234471, 4234474, C10C 306, D01F 920

Patent

active

047939125

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.

REFERENCES:
patent: 3649517 (1972-03-01), Kouach et al.
patent: 3723609 (1973-03-01), Mansmann et al.
patent: 3784679 (1974-01-01), Chiche
patent: 3927186 (1975-12-01), Vinton et al.
patent: 3928516 (1975-12-01), Sliva et al.
patent: 4146576 (1979-03-01), Wyss
patent: 4457828 (1984-07-01), Lewis
patent: 4670129 (1984-06-01), Tate et al.

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