Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2007-07-24
2007-07-24
Green, Anthony J. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S117000, C502S152000, C556S011000, C556S012000, C556S015000, C556S016000, C556S022000, C556S052000, C556S053000
Reexamination Certificate
active
11289623
ABSTRACT:
A metallocene compound represented by the following Chemical Formula 1:wherein M is a transition metal of Group 4;Cp denotes a cyclopentadienyl ring unsubstituted or substituted by hydrogen, alkyl, cycloalkyl, aryl, alkenyl, alkylaryl, arylalkyl or arylalkenyl radicals;Qs, which are the same or different, are halogen radicals, alkyl, alkenyl, aryl, alkylaryl, or arylakyl radicals having 1 to 20 carbon atoms, or alkylidene radicals having 1 to 20 carbon atoms;A′ is methoxymethyl, t-butoxymethyl, tetrahydropyranyl, tetrahydrofuranyl, 1-ethoxyethyl, 1-methyl-1-methoxyethyl, or t-butyl; anda is an integer of 4 to 8.The metallocene compounds in this invention can be strongly supported on the inorganic support, and the supported catalyst of this invention allows for an olefin polymerization process without any fouling in the reactor, and produces a polymer with better morphology and bulk density.
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Lee Bun-Yeoul
Lee Do-Hoon
Lee Joo-Eun
Oh Jae-Seung
Green Anthony J.
LG Chem Ltd.
McKenna Long & Aldridge LLP
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