Low hardness poly- ether ester block copolymer 10 below cover null shore hardness 45 D for on vehicle air back device which is produced from

摘要

Disclosed is a polyetherester thermoplastic elastomer resin composition with excellent Hex-elasticity and durability, which comprises 10 to 70% by weight of low hardness polyetherester block copolymer having shore-hardness not more than 40D, 55 to 15% by weight of high hardness polyetherester block copolymer having shore-hardness not less than 50D and 35 to 15% by weight of polybutylene terephthalate, and having flex-elasticity in the range of 2,500 to 4,600 kgf/cm2. The polyetherester thermoplastic elastomer resin composition of the present invention has excellent durability, processing workability, formability and scratch-resistance, as well as satisfactory flexibility and mechanical properties, especially, flex-elasticity. Additionally, the polyetherester thermoplastic elastomer resin composition of the present invention has advantages such as excellent deploying property and horn workability when it is employed in production of covers for air bags of automobiles.