| abstract |
PURPOSE:To provide a block copolymer compsn. having improved molding processability at a high temp., by blending a specified stabilizer with a mixture of a filler, a thermoplastic resin and a block copolymer composed of a conjugated diene and an arom. vinyl hydrocarbon. CONSTITUTION:0.001-30pts.wt. (per 100pts.wt. block copolymer) stabilizer having nitrogen and sulfur atoms in the molecule or component composed of said stabilizer and a radical polymn. inhibitor is blended with a block copolymer having an arom. vinyl hydrocarbon content of 5-70wt% composed of a conjugated diene and an arom. vinyl hydrocarbon. When the stabilizer and the radical polymn. inhibitor are used in combination, high-temperature heat treatment performance is synergistically improved so that a compsn. having more excellent characteristics can be obtd. Both components are used in a weight ratio of 99/ 1-10/90. Examples of the stabilizers are phenothiazine and its derivatives. |