Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2003-09-24
2010-02-23
Wu, David (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S113000, C526S114000, C526S117000, C526S160000, C526S170000, C526S161000, C526S172000, C526S130000, C526S169100, C526S941000, C526S943000, C502S129000, C502S113000, C502S103000, C502S117000
Reexamination Certificate
active
07666959
ABSTRACT:
The present invention discloses a metallocene catalyst system for producing polyolefins comprising: A. a hafnocene-based catalyst component suitable for producing the high molecular weight fraction of the polyolefin; B. one or more metallocene or post-metallocene components different from the component A and suitable for producing the low molecular weight fraction of the polyolefin; C. an activating agent having a low or no coordinating capability.
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Kilpatrick-Lee Diane L.
Lee Rip A.
Total Petrochemicals Research Feluy
Wu David
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