ETHYLENE (CO)POLYMERIZATION CATALYST AND PROCESS

摘要

FIELD: petrochemical processes and catalysts. SUBSTANCE: new catalyst for (co)polymerization of ethylene and its mixtures with C3-C14-alpha-olefins consists of reaction product of (i) solid catalytic component consisting of magnesium halide in active form and titanium compound containing at least one Ti-halide bond; (ii) alkylaluminum compound; and (ii) electronodonor compound. Catalyst is distinguished by that electronodonor compound is selected from 1,3-diethers of formula 1 (in description) wherein R and R' are straight-chain or ramified C1-C8-alkyls or phenyl radical; R"-R hydrogen atoms; R and R are C1-C8-alkyls, compound (iii) being under normal conditions reactive to MgCl2 and not to AlEt3. EFFECT: narrowed distribution of molecular weight in (co)polymers. 12 cl, 2 tbl, 8 ex