PROCESS FOR PRODUCING PITCH FOR CARBON MATERIALS

摘要

Disclosed herein is a process for producing a substantially quinoline-soluble and optically anisotropic pitch for carbon materials, which process comprises the steps of (1) polymerizing naphthalene by heating at a temperature of not higher than 330.degree.C for 0.5 to 100 hours in the presence of a Lewis acid catalyst, (2) after removing said catalyst from the reaction mixture, subjecting said reaction mixture to thermal treatment at a temperature of 390 to 450.degree.C for 1 to 5 hours in a closed system under a pressure of not higher than 5 kg f/cm2G, thereby carrying out aromatization of the polymerizate of naphthalene, and (3) heating the thus treated material at a temperature of 350 to 380.degree.C for 3 to 10 hours under a reduced pressure while flowing an inert gas, thereby removing the volatile components from said material, and the pitch produced by the process.