Continuous prodn. of hydrocarbon-phenol!-formaldehyde! resin - using an anthracene fraction from coal tar

摘要

A hydrocarbon-phenol-formaldehyde resin is produced by continuous polycondensation of an anthracene fraction of coal tar of b. pt. 270-350 degrees C, with phenol and formaldehyde at a wt. ratio of 1:3-1-2.2 respectively, 0.5-1.2 wt. % of acid catalyst is used, pref. HCl. The three condensants are fed to the reaction zone pref. at a rate of 500-550 g/hr. The resins have high heat resistance and are produced in high yield. Use of an anthracene fractions as the hydrocarbon source makes the process simple inexpensive and more efficient.