| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin composition which exhibits, when made into a film, rigidity and impact resistance in a well-balanced manner and has an excellent appearance. <P>SOLUTION: The polypropylene resin composition for film contains: a propylene-based copolymer (component (C)) composed of a propylene polymer component (component (A)) of 60-90 wt.%, and a copolymer component (component (B)) of 10-40 wt.% having a content of an ethylene-derived structural unit of 20-48 wt.%, in which the ratio of ultimate viscosity ([η]B) of the component to ultimate viscosity ([η]A) of the component B is 0.8≤B[η]B/[η]A≤2.0; and, based on 100 pts.wt. of the component (C), 0.001-0.25 pts.wt. of a nucleating agent represented by general formula, and the resin composition has a melt flow rate of 3-25 g/10 min. (In the formula, M<SP POS="POST">1</SP>and M<SP POS="POST">2</SP>, which are the same or different, each may be one cation, which is at least one selected from the group consisting of sodium, hydrogen, calcium, strontium and lithium; R<SP POS="POST">2</SP>, R<SP POS="POST">3</SP>, R<SP POS="POST">4</SP>, R<SP POS="POST">5</SP>, R<SP POS="POST">6</SP>, R<SP POS="POST">7</SP>, R<SP POS="POST">8</SP>, R<SP POS="POST">9</SP>, R<SP POS="POST">10</SP>and R<SP POS="POST">11</SP>, which are the same or different, each represent hydrogen atom, 1-9C alkyl, hydroxyl, 1-9C alkoxy, 1-9C alkyleneoxy, amino group or the like, optional two alkyls of the groups of R<SP POS="POST">2</SP>-R<SP POS="POST">11</SP>may be mutually bonded to form 3-6C carbon cycle, and R<SP POS="POST">2</SP>and R<SP POS="POST">3</SP>are mutually trans-positioned or cis-positioned). <P>COPYRIGHT: (C)2013,JPO&INPIT |
