Metallocenes containing aryl-substituted indenyl derivatives as

Details Metallocenes containing aryl-substituted indenyl derivatives as Metallocenes containing aryl-substituted indenyl derivatives as

1997-12-31

2000-04-18

Wu, David W.

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

Organic compounds

Heavy metal containing

556 12, 556 20, 556 21, 556 22, 556 23, 556 43, 556 53, 556 58, 556 87, 556 88, 502103, 502117, 526351, 526160, 526943, C08F 724

Patent

active

060517271

ABSTRACT:
A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I ##STR1## in which, in the preferred form, M.sup.1 in Zr or Hf, R.sup.1 and R.sup.2 are halogen or alkyl, R.sup.3 is alkyl, R.sup.4 to R.sup.12 are alkyl or hydrogen and R.sup.13 is a (substituted) alkylene or heteroatom bridge. The metallocenes, in particular the zirconocenes, produce polymers of very high molecular weight, in the case of prochiral monomers polymers of very high molecular weight, very high stereotacticity and very high melting point, at high catalyst activities in the industrially particularly interesting temperature range between 50 and 80.degree. C. In addition, reactor deposits are avoided by means of supported catalyst systems.

REFERENCES:
patent: 4769510 (1988-09-01), Kaminsky et al.
patent: 5017714 (1991-05-01), Welborn et al.
patent: 5145819 (1992-09-01), Winter et al.
patent: 5278264 (1994-01-01), Spaleck et al.
patent: 5304614 (1994-04-01), Winter et al.
patent: 5328969 (1994-07-01), Winter et al.
patent: 5329033 (1994-07-01), Spaleck et al.
patent: 5374752 (1994-12-01), Winter et al.
patent: 5561093 (1996-10-01), Fujita et al.
patent: 5616663 (1997-04-01), Imuta et al.
patent: 5629254 (1997-05-01), Fukuoka et al.
patent: 5658997 (1997-08-01), Fukuoka et al.
patent: 5693836 (1997-12-01), Winter et al.
patent: 5770753 (1998-06-01), Kuber et al.
patent: 5840948 (1998-11-01), Rohrmann et al.
patent: 5847176 (1998-12-01), Sullivan
Ewen et al., "Crystal Structures and Stereospecific Propylene Polymerization with Chiral Hafnium Metallocene Catalysts," J. Am. Chem. Soc. (1987) vol. 109, pp. 6544-6545.
Hans H. Brintzinger, et al., "Stereospecific Olefin Polymerization with Chiral Metallocene Catalysts", Angew Chem., Int. Ed. Engl. pp. 1143-1170, 1995.
A.D. Horton, "Metallocene Catalysis: Polymers by Design?", Trends in Polymer Science, p. 6184, 1994.
HansJorg Sinn, "Scope of Ziegler Catalysis", Advances in Organometallic Chemistry, vol. 18, pp. 123-149, 1980.

Affiliated with

Also associated with

Rating

Metallocenes containing aryl-substituted indenyl derivatives as does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metallocenes containing aryl-substituted indenyl derivatives as , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallocenes containing aryl-substituted indenyl derivatives as will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2337257