Harzzusamensetzung und Dichtungsmaterial

摘要

There are disclosed a resin composition (I ) which comprises 100 parts by weight of (a1) a styrenic thermoplastic elastomer composed of a block copolymer (styrene-ethylene/butylene-styrene block copolymer, styrene-ethylene/propylene-styrene block copolymer) , 3 to 50 parts by weight of (b1) an ethylene/(meth)acrylic acid copolymer or an ethylene/(meth)acrylic ester copolymer each having 5 to 45% by weight of (meth)acrylic acid content, and 50 to 170 parts by weight of (c1) a paraffin base oil; a resin composition (II ) which comprises 100 parts by weight of (a2) a styrenic thermoplastic elastomer composed of a block copolymer, 1 to 15 parts by weight of (b2) a maleic anhydride-grafted polyolefin, and 30 to 170 parts by weight of (c2) a paraffin base oil; a gasket material (I ) composed of the components (a1) , (b1) and (c1) ; a gasket material (II ) composed of the components (a2), (b2) and (c2) ; and a gasketed cover in which a gasket made of the gasket material (I ) or (II ) is integrally fitted to a cover body made of a metal by injection molding.