Patent ID: 6838540

Claim:
An olefin polymer having the ratio of number average molecular weight and weight average molecular weight (Mw/Mn) of not more than 1.5, selected from the group consisting of: polypropylene having number average molecular weight of not less than 500, melting point of not lower than 70° C. and a racemic diad (R), as measured by 13 C-NMR, of not less than 0.85, polybutene having number average molecular weight of not less than 500, melting point of not lower than 70° C. and a racemic diad (R), as measured by 13 C-NMR, of not less than 0.85, a copolymer of propylene, and at least one olefin selected from the group consisting of olefins of 4 to 20 carbon atoms, dienes and cycloolefins having number average molecular weight of not less than 500.