fect of four different alkoxysilanes used as external donor on activity, stereospecificity, andhydrogen response of N-catalyst in propylene polymerization were studied.

• 研究了分别采用4种不同外给电子体进行丙烯聚合时,N催化剂的活性、氢调敏感性及聚合物等规度的变化情况。