| 摘要 |
A novel process for preparing spherical carbon microballoons is disclosed. In this process, a pitch is admixed with a low-boiling organic solvent to form a pitch-solvent mixture; the pitch-solvent mixture is pulverized and flash heated at a temperature higher than the boiling point of the low-boiling organic solvent to form hollow, spherical carbon microballoons; and the carbon microballoons are rendered infusible and then sintered. The formation of hollow, spherical carbon microballoons at high yield is enabled by using a particular pitch containing 40 to 65% by weight of benzene insoluble components and up to 0.1% by weight of quinoline insoluble components, and having a softening point in the range of 60 DEG to 320 DEG C.
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