Patent ID: 8338557
Filing Date: 2012-12-25
Classification: C08F,C08L

Abstract:
1. An olefin polymer having Mw/Mn (Mw: weight-average molecular weight, Mn: number-average molecular weight) of less than 1.30, which is a diblock copolymer comprising: (i) a polymer block selected from the group consisting of polyethylene, high-density polyethylene, and linear low-density polyethylene, and (ii) a polymer block selected from the group consisting of polyethylene, high-density polyethylene, linear low-density polyethylene, an ethylene/butene copolymer, an ethylene/hexene copolymer, an ethylene/octene polymer, and syndiotactic polypropylene, wherein said polymer block (i) is produced prior to the production of said polymer block (ii), adjacent polymer blocks are different from one another, and said polyethylene is an ethylene polymer having a co-monomer content of less than 0.01% by mol, said high-density polyethylene is an ethylene copolymer containing as a co-monomer component an olefin of 3 to 8 carbon atoms in an amount of not less than 0.01% by mole and less than 3% by mol, and said linear low-density polyethylene is an ethylene copolymer containing as a co-monomer component an olefin of 3 to 8 carbon atoms in an amount of not less than 3% by mole and less than 10% by mol.