FIELD: chemistry.
SUBSTANCE: invention relates to a catalyst component for polymerisation of propene, a method for production thereof, a catalyst for polymerisation of propene, a catalyst for prepolymerisation and a method of polymerising propene. Catalyst component contains titanium, magnesium, halogen and inner electron donor A, where said internal electron donor A is selected from compounds of formula I,
formula I,
where in IR formula is selected from hydrogen, hydroxy group and substituted or unsubstituted C1-C30-hydrocarbyl, preferably from hydrogen, hydroxy group and substituted or unsubstituted C1-C20-alkyl, C6-C30-aryl, C6-C30-heteroaryl, C7-C30-alkylaryl and C7-C30-arylkyl; R1 and R2 can be identical or different from each other and selected from hydrogen and substituted or unsubstituted C1-C30-hydrocarbyl, preferably from hydrogen and substituted or unsubstituted C1-C20-alkyl, C6-C30-aryl, C7-C30-alkylaryl and C7-C30-arylkyl, where substituted C1-C30-hydrocarbyl means C1-C30-hydrocarbyl, substituted with a substituent selected from the group consisting of halogen, nitrogen atom, oxygen atom, hydroxy group, alkyl and alkoxy group. Catalyst component further comprises an internal electron donor B, which is at least one compound selected from a group comprising esters, compound ethers, ketones and amines, preferably from esters of polybasic carboxylic acids, esters of diols and diester. In the context of the present invention, a catalyst in which a compound of formula I is used, as an internal electron donor, when used for polymerisation propylene is characterized by high catalytic activity and slow reduction of activity.
EFFECT: obtained polymer has high melt index, wide molecular weight distribution (MWD) and high isotacticity.
17 cl, 6 tbl, 13 ex
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