摘要
综述了近年来丙烯聚合用催化剂专利技术进展。通过改进内给电子体或将乙烯基化合物预聚到催化剂上可得到高刚性聚丙烯(PP),通过双核金属间协同效应和催化剂空间位阻及电子效应,或通过改变内给电子体可以得到无规PP,通过改变外给电子体可以获得低等规PP,通过改变内给电子体可以得到高等规PP,通过改变聚合工艺或采用特殊内给电子体可以得到宽相对分子质量分布PP,使用茂金属催化剂在丙烯聚合中表现出高的活性,并且通过将长链分支引入PP分子中可以获得具有高熔体张力的PP。
Patents in polypropylene(PP)catalyst technologies are reviewed.High-stiffness PP is successfully prepared by modifying the internal electron donor or pre-polymerizing vinyl compounds onto the catalyst.Efficient synthesis of atactic PP has been achieved through synergistic effects between binuclear metals,spatial steric hindrance and electronic effects in the catalyst,or by altering the internal electron donor.Low isotactic PP is prepared by modifying the external electron donor,and high isotactic PP is by modifying internal donor.PP with a broad molecular mass distribution has been successfully synthesized with specialized internal electron donors or by adjusting polymerization processes.Metallocene catalysts exhibit high activity in propylene polymerization,which can be used to prepare PP with high melt surface tension by introducing long-chain branching into PP molecular chains.
作者
尹喆
YIN Zhe(SINOPEC Catalyst(Beijing)Co.,Ltd.,Beijing 102400,China)
出处
《合成树脂及塑料》
北大核心
2025年第3期57-62,共6页
China Synthetic Resin and Plastics
关键词
聚丙烯
茂金属催化剂
等规指数
专利
polypropylene
metallocene catalyst
isotactic index
patent
作者简介
尹喆,男,1981年生,硕士,高级工程师,2014年毕业于北京化工大学化学工程与工艺专业,现主要从事催化剂制备技术研究工作。E-mail:yinz.chji@sinopec.com。
