| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heat shrinkable film excellent in transparency, heat shrinkability, natural contractility, low temperature elongation and solvent resistance, having preferable balance of physical properties, and recyclability. <P>SOLUTION: This resin composition comprises a hydrogenated block copolymer (I) satisfying the following (1) to (6) and a polypropylene-based resin (II), in the weight ratio (I)/(II) of 75/25 to 60/40, and has specific gravity of 0.97 or less; (1) the content of a vinyl aromatic hydrocarbon is 60-80 mass%, the content of a conjugated diene is 40-20 mass%; (2) a block copolymer (A) mainly comprising the conjugated diene is contained; (3) the vinyl-bonding amount before hydrogenation is 75 mass% or more; (4) a random copolymer block (B) of the vinyl aromatic hydrocarbon and the conjugated diene is contained; (5) the content of the vinyl aromatic hydrocarbon in the random copolymer block (B) is 85-98 mass%; and (6) the rate of hydrogenation of the hydrogenated block copolymer (I) is 60% or more. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
