| 摘要 |
<p>1,2-Polybutadiene having a 1,2-addition unit content of 70 wt% or above based on all its units and a melting point ranging from 50 to 140 ºC and exhibiting viscosities ? of 400 to 1200 P, 300 to 1000 P and 200 to 800 P at 120 ºC, 150 ºC and 180 ºC respectively as determined by using a slit die rheometer at a shear rate of 5113 sec?-1¿ and a total halogen content of 30 ppm or below; and a thermoplastic elastomer composition comprising the above 1,2-polybutadiene and other thermoplastic elastomer.</p> |
