Olefin polymerization catalysts

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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Details

C526S161000, C526S127000, C526S943000, C526S172000, C502S103000, C502S117000, C502S152000, C502S155000, C556S052000

Reexamination Certificate

active

07676690

ABSTRACT:
The invention is a catalyst system including a Group IV B transition metal component and an alumoxane component which may be employed to polymerize olefins to produce a high molecular weight polymer.

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patent: A-87 03887 (1987-02-01), None
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Orcanometallics, vol. 9, Sep. 1990, pp. 869-871, American Chemical Society, Washington, DC, US; PJ. Shapiro et al.: [(N5-C5Me4)Me2Sl(n1-NCMe3)(PMe3)(ScHl2: A Unique Example of a Single-Component Alpha-Olefin Polymerization Catalyst Whole Document.
M. Reetz,Organotitanium Reagents in Organic Synthesis, pp. 117 and 121 (Springer-Verlay 1986.
Kukenhohner, “Untersuchungen zur Darstellung Chiraler Organotitan (IV)—Verbindungen fur Enantioselektire Synthesen” (1983) (unpublished Diplomarbeit, University of Marburg, Germany).
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