发明名称 |
Production of ultra high melt flow polypropylene resins |
摘要 |
A method of preparing ultra high melt flow polypropylene having reduced xylene solubles is provided. The method utilizes a diether internal donor-containing Ziegler-Natta catalyst system to polymerize propylene. The polypropylene produced is characterized by having a melt flow of at least about 300 g/10 min and a xylene solubles of not more than about 3.5% and no peroxide residue. The catalyst system may also include an internal phthalate donor. The method of the invention allows the amount of external donors to be reduced, or even eliminated, without significant increases in xylene solubles.
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申请公布号 |
US2002161139(A1) |
申请公布日期 |
2002.10.31 |
申请号 |
US20020044886 |
申请日期 |
2002.01.11 |
申请人 |
BLACKMON KENNETH PAUL;BARTHEL-ROSA LUIS PAULO;MALBARI SHABBIR AHMEDBHAI;RAUSCHER DAVID J.;DAUMERIE MICHEL M. |
发明人 |
BLACKMON KENNETH PAUL;BARTHEL-ROSA LUIS PAULO;MALBARI SHABBIR AHMEDBHAI;RAUSCHER DAVID J.;DAUMERIE MICHEL M. |
分类号 |
C08F4/649;C08F4/651;C08F10/00;C08F10/06;C08F110/06;(IPC1-7):C08F4/06 |
主分类号 |
C08F4/649 |
代理机构 |
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地址 |
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