Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2006-03-28
2006-03-28
Wu, David W. (Department: 1713)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S052000, C556S051000, C556S011000, C526S161000, C526S172000, C526S943000
Reexamination Certificate
active
07019157
ABSTRACT:
The present invention provides metallocene compounds which exhibit high polymerization activity for production of highly stereoregular polymers, as well as a production process for olefin polymers which employs olefin polymerization catalysts containing the compounds, and olefin polymers obtained by the production process. A metallocene compound of the present invention is represented by the following general formula (1):in-line-formulae description="In-line Formulae" end="lead"?YKLMX2 (1)in-line-formulae description="In-line Formulae" end="tail"?wherein M represents a titanium atom, zirconium atom or hafnium atom; K and L are fused rings coordinated to M and each independently represents a fused ring of a cyclopentadienyl ring and a 5-membered ring, a fused ring of a cyclopentadienyl ring and a 6-membered ring or a fused ring of a cyclopentadienyl ring and a 7-membered ring; Y is a bridge group crosslinking K and L; and each X is bonded to M; and K and L have a 2-furyl group, substituted 2-furyl group, 2-thienyl group, substituted 2-thienyl group, 2-furfuryl group or substituted 2-furfuryl group on at least one position among each of the 2-positions, 4-positions and 5-positions.
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Kimura Masami
Nakano Masato
Ushioda Tsutomu
Uwai Toshihiro
Yahata Tsuyoshi
Chisso Corporation
Chisso Petrochemical Corporation
Lee Rip A
McDermott Will & Emery LLP
Wu David W.
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