| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an air-bag cover with excellent cold shock strength, a process for producing a thermoplastic elastomer composition suitable for manufacturing the air-bag cover. <P>SOLUTION: The process for producing the thermoplastic elastomer composition comprising the step of crosslinking dynamically at least the following components (A), (B) and (C) in the presence of a crosslinking agent: (A) 10 to 50% by weight of an oil-extended ethylene-α-olefin-non-conjugated diene copolymer rubber having a density of 850 to 900 kg/m<SP>3</SP>and Mooney viscosity (ML<SB>1+4</SB>100°C) of 30 to 150, (B) 20 to 60% by weight of an ethylene-α-olefin copolymer having a density of 850 to 910 kg/m<SP>3</SP>and a melt flow rate of 0.1 to 80 g/10 minutes measured at 230°C under a load of 21.18 N, and (C) 20 to 60% by weight of a polypropylene resin (the total amount of the components (A), (B) and (C) being 100% by weight). <P>COPYRIGHT: (C)2007,JPO&INPIT |
