Monocyclopentadienyl complexes of chromium, molybdenum or...

Details Monocyclopentadienyl complexes of chromium, molybdenum or... Monocyclopentadienyl complexes of chromium, molybdenum or...

2005-07-19

2005-07-19

Nazario-Gonzalez, Porfirio (Department: 1621)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C502S120000, C502S159000, C526S160000, C526S352000, C526S943000, C546S010000, C556S011000, C556S012000, C556S021000, C556S060000

Reexamination Certificate

active

06919412

ABSTRACT:
Substituted monocyclopentadienyl, monoindenyl, monofluorenyl or heterocyclopentadienyl complexes of chromium, molybdenum or tungsten, wherein at least one of the substituents of the cyclopentadienyl ring carries a rigid donor function which is not exclusively bonded through sp3-hybridized carbon or silicon atoms, and a process for polymerizing olefins.

REFERENCES:
patent: 6437161 (2002-08-01), Mihan et al.
patent: 6699948 (2004-03-01), Mihan et al.
Araki et al., Chemical Abstracts, vol. 119, No. 15, p. 957, abstract No. 160483p (1993).

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