Preparation of raw material pitch for carbon fiber
专利汇可以提供Preparation of raw material pitch for carbon fiber专利检索，专利查询，专利分析的服务。并且PURPOSE: To stably obtain raw material pitch with high modulus of elasticity for preparing carbon fiber, by extractiong a deasphalted oil obtd. by the vacuum distillation and solvent deasphalting of a heavy petroleum residue, or extracting a vacuum distillate of the heavy residue, with a solvent and thermally treating the extract.
CONSTITUTION: A heavy petroleum residue such as an atmospheric distillation residue or hydrocracked residue of crude oil is subjected to vacuum distillation and a vacuum residue of b.p. ≥500°C under normal press is subjected to deasphalting with a solvent such as propane, to remove asphaltene contg. V, Ni, etc. in a large amt. The obtd. solvent-deasphalted oil or a fraction of b.p. 300W 500°C under normal press. obtd. by the vacuum distillation of the heavy oil without deasphalting, is extracted at about 45W145°C by using furfural as a solvent. Then the purpase pitch is obtd. by thermally treating a furfural-extract at about 390W460°C for about 1W30hr.
COPYRIGHT: (C)1983,JPO&Japio，下面是Preparation of raw material pitch for carbon fiber专利的具体信息内容。
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