FIELD: polymerization catalysts. SUBSTANCE: preparation of catalyst by interaction of tetraneophilezirconium in hydrocarbon with IIa, IIIa, IVa, and IVb group metal oxides with partly hydroxylated surface, or mixture of oxides, is distinguished by that tetraneophilezirconium preliminarily recrystallized from liquid hydrocarbon is used, catalyst is hydrogenated, if necessary, and then partially or completely separated from by-products, basically from tert-butylbenzene, involving washing with liquid inert hydrocarbon, or by any mechanical means, or by evaporation (preferably, in vacuum), or by combination of all these ways to give catalyst containing 1.66-1.72 wt % zirconium. EFFECT: increased catalytic activity. 8 cl, 2 tbl, 25 ex
Authors
Dates
1999-09-27—Published
1994-05-20—Filed