| 摘要 |
PROBLEM TO BE SOLVED: To provide a propylene polymer having good heat resistance and containing a hydroxyl group that is a polar group. SOLUTION: The propylene polymer comprises a propylene and an olefin containing a hydroxyl group, wherein (i) the amount of the hydroxyl-group-containing olefin in the polymer is 10 mol% or less, (ii) a weight average molecular weight (Mw) of the polymer as measured by gel permeation chromatography (GPC) is 5,000 or more, (iii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to a number average molecular weight (Mn) ranges from 1.0 to 3.5, (iv) when a melting point ([Tm];°C) of the polymer as measured by DSC and the amount of the hydroxyl-group-containing olefin ([-OH]; mol%) of the polymer as measured by nuclear magnetic resonance (NMR) are represented by 0<[-OH]≤3, relational formula (Eq-1):[Tm]≥150-9.986×[-OH] is satisfied and when the same are represented by 3<[-OH]≤10, relational formula (Eq-2):[Tm]≥144.042-8×[-OH] is satisfied. COPYRIGHT: (C)2006,JPO&NCIPI
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