METHOD OF MAKING CATALYST COMPONENT AND COMPONENTS MADE THEREFROM Russian patent published in 2010 - IPC C08F10/00 C08F4/02 C08F4/654 C08F4/659 

FIELD: chemistry.

SUBSTANCE: there is described method for making a catalyst component for copolymerisation of olefins CH₂=CHR in which R is hydrogen or a hydrocarbon radical containing 2-12 carbon atoms, on a MgCl₂ carrier, involving use of a Mg compound selected from a Lewis adduct from adducts with formula MgX₂(R"OH)_m, in which R" represents C₁-C₂₀ hydrocarbon groups, X is chlorine, and m ranges from 0.1 to 6, Ti compound and electron-donor compound (ED), selected from alcohol, alkyl ester C₁-C₂₀ of aliphatic carboxylic acids, ketones, amines, amides, nitriles, alkoxysilanes and aliphatic ethers as basic compounds. The said method includes two or more reaction steps involving use of at least one of the said basic compounds themselves as a fresh reagent or in a mixture in which they are the main component. The method is distinguished by that, at the last two or more reaction steps, the basic compound which is used as the fresh reagent is an ED compound. Also described is a solid catalyst component for copolymerisation of olefins CH₂=CHR, in which R is hydrogen or a hydrocarbon radical containing 2-12 carbon atoms, including a Ti compound and an electron donor (ED), selected from alcohol, alkyl ester C₁-C₂₀ of aliphatic carboxylic acids, ketones, amines, amides, nitriles, alkoxysilanes, aliphatic ethers and esters of aliphatic carboxylic acids on a magnesium chloride carrier, in which molar ratio ED/Ti varies from 1.5 to 3.5, and molar ratio Mg/Ti exceeds 5.5. A catalyst is described for copolymerisation of olefins, for polymerisation of olefins CH₂=CHR in which R is hydrogen or a hydrocarbon radical containing 2-12 carbon atoms, including a product obtained after contacting: (a) a solid catalyst component described above; (b) one or more compounds of alkyl aluminium and, optionally, (c) copolymerisation of olefins CH₂=CHR in which R is hydrogen or a hydrocarbon radical containing 2-12 carbon atoms, carried out in the presence of the said catalyst.

EFFECT: increased stereospecificity of the catalyst.

22 cl, 4 tbl, 30 ex