MAGNESIUM DICHLORIDE-ALCOHOL ADDUCTS, METHOD OF PREPARATION THEREOF, CATALYST COMPONENTS AND CATALYST PREPARED THEREFROM, AND OLEFIN POLYMERIZATION PROCESS Russian patent published in 2003 - IPC

FIELD: polymerization catalysts. SUBSTANCE: invention provides adducts of general formula MgCl₂•mROH•nH₂O, wherein R represents C1-C10-alkyl, 2≤m≤4,2, and 0≤n≤0,7, characterized by X-ray diffraction spectrum, in which three principal diffraction lines within the range of diffraction angles 2θ between 5 deg and 15 deg are available, in particular at 2θ = 8.8 +/- 0.2, 9.4 +/- 0.2, and 9,8 +/- 0.2 deg, of which line 8,8 +/- 0.2 deg is most intensive and intensity of the two other diffraction lines is at least 0,2 the first line intensity. Thus obtained adducts are further used for preparing polymerization catalysts. EFFECT: improved activity and stereoselectivity of polymerization catalysts. 38 cl, 1 tbl, 8 ex