FIELD: polymer production. SUBSTANCE: black petroleum polymer resins suitable as softener in tyre production process and also useful in regenerative rubber industry and for preparing binders for plastic concretes, etc. are prepared under mild conditions from heavy oil pyrolysis tar with boiling range 190-360 C. For that, raw material is blown with air (15-30 h-1) at 130-160 C in presence of diethylaluminum chloride, triethylaluminum, or triisobutylaluminum. EFFECT: increased yield of resins. 2 tbl
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Authors
Dates
2000-10-27—Published
1999-12-07—Filed