Germanium bridged metallocenes producing polymers with increased

Details Germanium bridged metallocenes producing polymers with increased Germanium bridged metallocenes producing polymers with increased

1998-12-30

2000-03-07

Nazario-Gonzalez, Porfirio

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526352, 526943, 502103, 502117, 502152, 556 28, 556 53, 556 43, 556 46, 556 58, 556136, 556138, 987 2, C08F 4642, C07F 1700

Patent

active

060341920

ABSTRACT:
This invention relates to a process for polymerizing ethylene comprising contacting ethylene and optional comonomers with a catalyst system comprising an activator and a transition metal compound represented by the formula: ##STR1## Wherein R.sub.1 and R2 are independently hydrogen or a group having up to 100 carbon atoms, Cp.sub.1 is a bulky ligand; Cp.sub.2 is a bulky ligand or a heteroatom optionally bound to a C.sub.1 to C.sub.50 hydrocarbyl group, n is the valence state of the transition metal, Tm is a Group 3 to 10 metal, and each X is independently an anionic leaving group.

REFERENCES:
patent: 5081322 (1992-01-01), Winter et al.
patent: 5350817 (1994-09-01), Winter et al.
patent: 5532396 (1996-07-01), Winter et al.
patent: 5631335 (1997-05-01), Alt et al.
patent: 5696045 (1997-12-01), Winter et al.
J. Organometallic Chem., W.A. Herrmann et al., 509, pp. 115-117 (1996).
J. Orgnometallic Chem., K. Patsidis et al., 509, pp. 63-71 (1996).
New J. Chem., vol. 14, No. 6/7, W. Spaleck et al., pp. 499-503, (1990).
Riken Review, No. 15, Y. Yamaguchi et al., pp. 17-18, (Aug., 1997).

Affiliated with

Also associated with

Rating

Germanium bridged metallocenes producing polymers with increased does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Germanium bridged metallocenes producing polymers with increased, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Germanium bridged metallocenes producing polymers with increased will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-364152