| 主权项 |
1. A propylene resin composition comprising:
100 parts by weight of (A) a propylene resin, and 0.05 to 0.5 part by weight of (B) a nucleating agent containing an organophosphoric ester compound represented by the formula (B1) and at least one kind selected from aliphatic carboxylic acids and derivatives thereof and containing an alkali metal element as an essential component, wherein: (1) the melt flow rate (MFR) of the composition, as measured at a measurement temperature of 230° C. under a load of 2.16 kg in accordance with ASTM D-1238, is 11 to 100 g/10 min, (2) the crystalline melting point of the resin in the composition, as measured by a differential scanning calorimeter (DSC) in accordance with JIS-K7121, is 140 to 155° C., (3) when a main elution peak temperature in an elution curve of the composition determined by a temperature rising elution fractionation chromatograph (TREF) is represented by Tp, the elution quantity Wp1 (% by weight) in a temperature range higher than Tp, based on the total elution quantity in a temperature range of 0 to 135° C., is not less than 26.5% by weight, and (4) in an elution curve of the composition determined by a temperature rising elution fractionation chromatograph (TREF), the elution quantity Wp2 (% by weight) in a temperature range not higher than 10° C., based on the total elution quantity in a temperature range of 0 to 135° C., is not more than 4.0% by weight, wherein R1 is a divalent hydrocarbon group of 1 to 10 carbon atoms, R2 and R3 are each independently hydrogen or a hydrocarbon group of 1 to 10 carbon atoms, R2 and R3 may be the same as or different from each other, M is an n-valent metal atom, and n is an integer of 1 to 3. |
