BEAD COMPONENT OF OLEFIN POLYMERIZATION CATALYST, PROCESS FOR PREPARATION THEREOF, OLEFIN POLYMERIZATION CATALYST, AND PROCESS FOR POLYMERIZATION OF OLEFINS Russian patent published in 1999 - IPC

FIELD: chemical industry. SUBSTANCE: bead solid catalyst components for polymerization of olefins comprising titanium compound applied onto magnesium halide containing more than one Ti-halide, and optionally containing groups other than halide in amount of less than 0.5 mole per mole of Ti. Bead solid compounds have specific surface area of less than 70 sq.m/g as determined by BET method; pore volume is higher than 0.5 cubic cm/g, as determined by mercury method and at least 50% pores have radii of greater than 800 . The present invention describes olefin polymerization catalyst based on bead component and aluminium alkyl. The claimed process comprises reacting (a) MgCl₂•mROH wherein 0 ≤ m ≤ 0,5 and R is alkyl, cycloalkyl or aryl containing 1-12 carbon atoms and (b) titanium compound of formula: Ti(OR)_nX_y-n wherein n is 0-0.5, Y is valency of titanium, X is halide, R is alkyl containing 2-8 carbon atoms or COR. IN this case compound (a) is prepared by chemically by removing alcohol from adduct of formula: MgCl₂•pROH wherein 0,1 ≤ p ≤ 2. Process for polymerizing olefins CH₂= CHP wherein R is hydrogen or C_1-12-hydrocarbon in the presence of catalyst. The claimed catalysts are advantageous in that they are useful for preparing polymers in the form of spherical particles having good morphological characteristics such as high volumetric density. EFFECT: more efficient olefin polymerization process and improved properties of the bead solid catalyst component. 33 cl, 4 ex