Patent ID: 8871855

Claim:
A terminally unsaturated polyolefin, which is selected from the group consisting of: a propylene homopolymer; a propylene-based copolymer consisting of propylene, ethylene and one or more α-olefins each having 4 to 10 carbon atoms, such that the propylene-based copolymer comprises 10 mol % or less of said ethylene and the one or more α-olefins each having 4 to 10 carbon atoms; a butene-1 homopolymer; and a butene-1-based copolymer consisting of butene-1, ethylene, propylene and one or more α-olefins each having 5 to 10 carbon atoms, such that the butene-1-based copolymer comprises 10 mol % or less of said ethylene, said propylene and the α-olefins each having 5 to 10 carbon atoms wherein the terminally unsaturated polyolefin satisfies the following (1) to (4): (1) a mesopentad fraction [mmmm] of propylene chain unit or butene-1 chain unit is 20 to 80 mol %; (2) a number of terminal vinylidene groups per molecule is 1.3 to 2.5; (3) a weight-average molecular weight Mw is 500 to 100,000; and (4) a molecular weight distribution Mw/Mn is 1.1 to 2.6.