FIELD: chemical industry. SUBSTANCE: mixture of average temperature coal-tar pitch with absorbing or authracene fractions of coal-tar resin at pitch to fraction ratio from (9.9:0.1) to 9.1:0.9) at 280-350 C is treated with air. Technology of preparing pitch makes it possible to decrease α1 fraction formation rate, reduce pitch softening temperature and shorten process duration. EFFECT: more efficient preparation method. 2 cl, 1 dwg, 7 ex, 3 tbl
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Authors
Dates
1998-09-27—Published
1996-03-04—Filed