Catalyst composition comprising shuttling agent for higher olefin multi-block copolymer formation

A copolymer formed by polymerizing propylene, 4-methyl-1-pentene, styrene, or another C4-20 α-olefin, and a copolymerizable comonomer in the presence of a composition comprising the admixture or reaction product resulting from combining:

• (A) a first olefin polymerization catalyst comprising a complex corresponding to the formula
• R20 is an aromatic or inertly substituted aromatic group containing from 5 to 20 atoms not counting hydrogen, or a polyvalent derivative thereof;
• T3 is a hydrocarbylene or silane group having from 1 to 20 atoms not counting hydrogen, or an inertly substituted derivative thereof;
• M3 is a Group 4 metal;
• G is an anionic, neutral or dianionic ligand group;
• g is a number from 1 to 5 indicating the number of G groups;
• and
• bonds and electron donative interactions are represented by lines and arrows respectively;
• (B) a second olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions;
• and
• (C) a chain shuttling agent.