Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-07-10
2007-07-10
Wu, David W. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S160000, C526S170000, C526S126000, C526S943000, C502S103000, C556S053000, C556S011000, C556S012000
Reexamination Certificate
active
10541644
ABSTRACT:
The present invention discloses a metallocene catalyst component of formula (Flu-R″-Cp)M(η3-C3R′5)(ether)n(I) wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a fluorenyl, substituted or unsubstitutted, R″ is a structural bridge between Cp and Flu imparting stereorigidity to the component, M is a metal Group III of the Periodic Table, each R′ is the same or different and is hydrogen or a hydrocarbyl having from 1 to 20 carbon atoms and n is 0, 1 or 2. It further discloses a process for preparing said catalyst component and its used in the controlled polymerisation of polar or non polar monomers.
REFERENCES:
patent: WO 00/56778 (2000-09-01), None
Qian et al. Organometallics, 2000, 19, 4134-4140.
Lee et al. Organometallics, 1999, 18, 5124-5129.
JP 7-258319 (abstract and translation in English).
Carpentier Jean-François
Kirillov Evgueni
Razavi Abbas
Jackson William D.
Krueger Tenley R.
Lee Rip A.
Total Petrochemicals Research Feluy
Wu David W.
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