PROPYLENE-BASED POLYMER, PRODUCT AND METHOD OF OBTAINING THEREOF Russian patent published in 2014 - IPC C08F10/06 C08F110/06 C08F210/06 C08F2/00 C08L23/10 

FIELD: chemistry.

SUBSTANCE: invention relates to composition of propylene-based polymers and method of their obtaining. Method of polymerisation includes bringing propylene and optionally at least one other olefin under conditions of carrying out polymerisation in contact with catalyst composition, containing substituted phenylene-aromatic diester. Obtaining propylene-based polymer, characterised by flexural modulus higher than 260 klb/in² (1793 MPa), according to determination in accordance with document ASTM D 790. Polymer composition for obtaining moulded articles contains propylene homopolymer, characterised by flexural modulus higher than 260 klb/in² (1793 MPa), according to determination in accordance with document ASTM D 790, and substituted phenylene-aromatic diester, selected from the group, consisting of substituted 1,2-phenylenedibenzoate, 3-methyl-5-tert-butyl-1,2-phenylenedibenzoate and 3,5-diisopropyl-1,2-phenylenedibenzoate.

EFFECT: application of improved catalyst composition with obtaining propylene-based polymer, characterised by improved rigidity.

8 cl, 4 tbl, 5 ex