发明名称 |
Polymerization catalyst system using n-butylmethyldimethoxysilane for preparation of polypropylene film grade resins |
摘要 |
It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G') v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.
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申请公布号 |
US6657024(B1) |
申请公布日期 |
2003.12.02 |
申请号 |
US20020233637 |
申请日期 |
2002.09.03 |
申请人 |
FINA TECHNOLOGY, INC. |
发明人 |
BLACKMON KENNETH PAUL;RAUSCHER DAVID J.;WALLACE MICHAEL RAY |
分类号 |
B01J31/02;C08F4/42;C08F4/646;C08F110/06;(IPC1-7):C08F4/42 |
主分类号 |
B01J31/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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