摘要
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。实验结果表明,使用二异丁基-二甲氧基硅烷作为外给电子体时,N催化剂具有较高的活性和氢调敏感性;使用二环戊基-二甲氧基硅烷作为外给电子体时,N催化剂具有较高的活性和定向能力;使用二苯基-二甲氧基硅烷作为外给电子体时,N催化剂具有较高的氢调敏感性;使用二异丙基-二甲氧基硅烷作为外给电子体时,可使聚合物具有较高的等规度。
<abstract>fect of four different alkoxysilanes used as external donor on activity, stereospecificity, and
hydrogen response of N-catalyst in propylene polymerization were studied. N-catalyst with the highest activity, stereospecificity and hydrogen response could be obtained when diisobutyldimethoxysilane, dicyclopentyldimethoxysilane, and diphenyldimethoxysilane was used as external donor. When diisopropyldimethoxysilane was used,the polymer showed the highest isotacticity.
出处
《石油化工》
CAS
CSCD
北大核心
2004年第7期615-618,共4页
Petrochemical Technology
关键词
丙烯聚合
N催化剂
氢调敏感性
外给电子体
<keyword>opylene polymerization
N-catalyst
hydrogen response
external donor
