THERMOPLASTIC ELASTOMER COMPOSITION FOR POWDER MOLDING, POWDER THEREOF, AND METHOD OF MOLDING WITH THE POWDER

摘要

A thermoplastic elastomer composition for powder molding which comprises 100 parts by weight of the following ingredient (a), 5 to 300 parts by weight of the following ingredient (b), and 1 to 200 parts by weight of the following ingredient (c) and has a complex dynamic viscosity at 250 DEG C, eta * (1), of 1.5x10<5> P or lower and a Newtonian viscosity index, n, of 0.67 or lower: (a) a polyolefin resin, (b) at least one member selected from the group consisting of (b-1) hydrogenated aromatic vinyl compound/conjugated diene compound copolymers and (b-2) ethylene- alpha -olefin copolymer rubbers, and (c) at least one member selected from the group consisting of petroleum resins, waxes, and terpene resins. The composition can be molded at a lower temperature and give a molding with excellent flexibility. The composition is used to obtain a thermoplastic elastomer composition powder.