Patent ID: 7544758

Claim:
A propylene homopolymer satisfying the following requirements (1) to (5): (1) the amount of the components which are dissolved out into hexane at 25° C. (H25) ranges from 0 to 80% by weight; (2) the melting temperature Tm and the heat of fusion ΔH(J/g) satisfy a relationship represented by the following formula: ΔH≧3×( Tm -120); (3) the meso-pentad fraction (mmmm (in percentage terms by mole)) ranges from 20 to 60% by mole; (4) the racemi-pentad fraction (rrrr) and (1-mmmm) satisfy a relationship represented by the following formula: [ rrrr /(1- mmmm )]≦0.1; wherein the racemi-pentad fraction (rrrr) and the meso-pentad fraction (mmmm) are expressed as a decimal; and, (5) the amount of the components which are dissolved out at 25° C. or lower (W25) in temperature-raising chromatography ranges from 20 to 100% by weight.