Pitch type carbon fibers and process for their production

摘要

A pitch-type carbon fiber made from a pitch having +E,crc 1+EE a glass transition temperature width of at most 40 DEG C. as measured by a differential scanning calorimeter, +E,crc 2+EE a proportion of the optically anisotropic phase of at least 10% by volume, and +E,crc 3+EE a quinoline-insoluble content of at most 5% by weight, as a spinning raw material pitch.