| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermoplastic elastomer composition which excels in oil retainability regardless of super-low hardness, in which tackiness nature and compression set are small, and which is further excellent in solvent resistance; and to provide a molding of the same. <P>SOLUTION: The thermoplastic elastomer composition includes (D) 170-270 parts by mass of a non-aromatic rubber softener consisting of: (i) 30-80 mass% of a non-aromatic rubber softener in which the kinetic viscosity at 40°C is at most 90 mm<SP POS="POST">2</SP>/sec and whose molecular weight distribution (Mw/Mn) measured by a gel permeation chromatography method is at most 1.3; and (ii) 70-20 mass% of a non-aromatic rubber softener in which the kinetic viscosity at 40°C is 350-400 mm<SP POS="POST">2</SP>/sec and whose molecular weight distribution (Mw/Mn) measured by a gel permeation chromatography method is at most 1.3, based on 100 parts by mass of a resin component which includes (A) 100 parts by mass of a hydrogenated block copolymer which is a hydrogenated block copolymer obtained by carrying out hydrogenation to a block copolymer consisting of at least one of the polymer blocks which use a vinyl aromatic compound as a main component and at least one of the polymer blocks which use a conjugated diene compound as a main component, and whose weight-average molecular weight is 300,000-700,000; (B) 3-15 parts by mass of polypropylene; and (C) 10-200 parts by mass of a polyphenylene ether resin. <P>COPYRIGHT: (C)2012,JPO&INPIT |
