Ansa-metallocene compound, process of preparing the same,...

Details Ansa-metallocene compound, process of preparing the same,... Ansa-metallocene compound, process of preparing the same,...

2005-09-23

2009-12-08

Wu, David (Department: 1796)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C556S052000, C556S051000, C526S943000, C526S941000, C526S160000, C526S170000

Reexamination Certificate

active

07629481

ABSTRACT:
Provided are a bridged metallocene compound particularly suitable for copolymerization of ethylene and alpha-olefin or cyclic olefin, a process of preparing the metallocene compound, and a process of preparing polyolefin using the metallocene compound. The bridged metallocene compound has low steric hindrance and good (co)polymerization activity, and thus, exhibits good activity in copolymerization of ethylene and alpha-olefin such as 1-hexene or 1-octene. Furthermore, the process of preparing the bridged metallocene compound is simplified, and thus, suitable for mass production.

REFERENCES:
patent: 5384298 (1995-01-01), Inahara et al.
patent: 5597935 (1997-01-01), Jordan et al.
patent: 5631202 (1997-05-01), Ewen
patent: 5650471 (1997-07-01), Abe et al.
patent: 5892081 (1999-04-01), Suling et al.
patent: 6162935 (2000-12-01), Chen et al.
patent: P1998-025280 (1998-07-01), None
patent: 100398740 (2003-09-01), None
patent: 218884 (1992-02-01), None
patent: 309523 (1997-07-01), None
patent: 523524 (2003-03-01), None
patent: 200401784 (2004-02-01), None
patent: 200413423 (2004-08-01), None
patent: 9613532 (1996-05-01), None
patent: 0009524 (2000-02-01), None
patent: WO 2004/020481 (2004-03-01), None
patent: 2004037839 (2004-05-01), None
Cho et al. Organometallics 2004, 23, 4693-4699; electronic version available Aug. 14, 2004.
P1998-025280 (abstract in English).
Won et al. Synthesis 2004, 7, 1052-1056; electronic version available Feb. 4, 2004.
“Syntheses of 2,5- Dimethylcyclopentadienyl ansa-Zirconocene Complexes and Their Reactivity for Ethylene/ Norbornene Copolymerization”; Authors: Eun Sook Cho, et al.; Organometallics, 23 (20), pp. 4693-4699 (2004).
Korean Intellectual Property Office Notice to Submit Response; Dated Feb. 1, 2006.
Preliminary Notice of the First Office Action with Search Report dated Apr. 25, 2008.
Cho, Eun Sook, et al., Synthesis of 2, 5-Dimethylcyclopentadienyl ansa-Zirconocene Complexes and Their Reactivity for Ethylene/Norbornene Copolymerization, Organometallics, 2004, 23, pp. 4693-4699.

Affiliated with

Also associated with

Rating

Ansa-metallocene compound, process of preparing the same,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ansa-metallocene compound, process of preparing the same,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ansa-metallocene compound, process of preparing the same,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4121240