Production of raw material pitch for carbon fiber |
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| 申请号 | JP23708786 | 申请日 | 1986-10-07 | 公开(公告)号 | JPS62174294A | 公开(公告)日 | 1987-07-31 |
| 申请人 | Seibu Sekiyu Kk; Ube Ind Ltd; | 发明人 | ISHIKAWA SEIJI; HIRANO SHUICHI; MATSUMOTO YUKIO; KAIHARA TSUTOMU; MORISHIGE TAKUO; SUGIYAMA KENJI; | ||||
| 摘要 | PURPOSE: To obtain the title pitch capable of providing a carbon fiber which is excellent in mechanical properties such as strength and modulus of elasticity, by heat- treating a particular raw material such as a high-boiling oil derived from petroleum, removing insoluble matter therefrom, heating the treated material to remove low- boiling fractions and further heat-treating the material at a high temp. CONSTITUTION: Cracked petroleum is obtd. by fluidized catalystic cracking of petroleum at 480W560°C in the presence of a silica-alumina or zeolite cracking catalyst. At least one raw material selected from among a high-boiling oil contg. entrained catalyst powder obtd. from the cracked petroleum, a distillate or distillation residue of the cracked petroleum or pitch obtd. by heat treatment thereof is heat-treated in a hydrogen atmosphere at 350W550°C for 10min W3hr. Insoluble matter is separated and removed from the reaction mixture to obtain a first treatment mixture. The first treatment mixture is heated at 250W400°C in an inert gas atmosphere under a reduced pressure to remove a low-boiling fraction which distilled at the same temp., thereby obtaining a second treatment mixture. The second treatment mixture is treated in an inert gas atmosphere under a reduced pressure at 430W550°C for 10W60min to obtain the title pitch having a softening point of 260W340°C, a toluene insoluble content of 50W90% and a quinoline insoluble content of 10W40%. COPYRIGHT: (C)1987,JPO&Japio |
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