CATALYST COMPOSITION, CONTAINING SHUTTLE AGENT, FOR FORMATION OF MULTI-BLOCK-COPOLYMER OF HIGHER OLEFIN Russian patent published in 2009 - IPC C08F297/08 C08F4/646 C08F2/38 

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for polymerisation of propylene, 4-methyl-1-pentene, styrene or some other C_4-8 α-olefin and one or more copolymers. The invention relates to a multi-block-copolymer, formed through polymerisation of propylene, 4-methyl-1-pentene, styrene or some other C_4-20 α-olefin and a copolymerised comonomer in the presence of a composition, which contains a mixture or a reaction product obtained from combining: (A) first catalyst for polymerisation of olefins, (B) second catalyst for polymerisation of olefins, which enables production of polymers, distinguished by chemical or physical properties from the polymer obtained with catalyst (A) in equivalent polymerisation conditions, and (C) a chain shuttle agent, where (A) or has formula: where: T³ is a divalent bridge group of 2 to 20 atoms, excluding hydrogen, and Ar², independently in each case, is arylene or alkyl- or aryl-substituted arylene group from 6 to 20 atoms, excluding hydrogen, M³ is a group IV metal, G, independently in each case, is an anion, neutral or dianion ligand-group, g is an integer from 1 to 5, which indicates the number of such G groups, and electron-donor reactions are shown by arrows, or has formula: , where M³ is Hf or Zr; Ar₄ is C_6-20 aryl or its inert substituted derivatives, especially 3,5-di(isopropyl)phenyl, 3,5-di(isobutyl)phenyl, dibenzo-1H-pyrrol-1-yl or anthracen-5-yl and T⁴, independently in each case, contains C_3-6 alkylene group, C_3-6 cycloalkylene group or their inert substituted derivatives; R²¹, independently in each case, is hydrogen, halogen, hydrocarbyl, trihydrocarbylsilyl or trihydrocarbylsilylhydrocarbyl from up to 50 atoms, excluding hydrogen; and G, independently in each case, is halogen or hydrocarbyl or trihydrocarbylsilyl group from up to 20 atoms, excluding hydrogen, or 2 G groups together represent a divalent derivative of the said hydrocarbyl or trihydrocarbylsily groups. The invention also relates to a method of producing the said multi-block-copolymer, to its functionalised or cross linked derivatives and polymer mixture containing it.

EFFECT: invention allows for obtaining a copolymer product with unique physical properties.

31 cl, 5 ex, 6 dwg