Metallocenes and their use for olefin polymerization

US5521265A · kind A · utility

Assignee

• PCD Polymere Gesellschaft m.b.H. · AT

Inventors

• Herwig Schottenberger · Patsch, AT
• Michael R. Buchmeiser · Rollhof, DE
• Olaf Elsner · Gütersloh, DE
• Eberhard Ernst · Linz, AT
• Jens Reussner · Linz, AT
• Wolfgang Neissl · Lichtenberg, AT
• Herbert Angleitner · Matrei in Osttirol, AT

Key dates

• Filing date: Mar 22, 1995
• Grant date: May 28, 1996
• Expiry date: Mar 22, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/61922
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Metallocenes of the formula ##STR1## where M is a metal selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta or an element selected from the group of the lanthanides, X.sub.1 and X.sub.2 are each an alkyl, alkoxy, aryl, aryloxy, alkenyl, arylalkyl, alkylaryl or arylalkenyl group, hydrogen or halogen and L.sub.1 and L.sub.2 are each a hydrocarbon which can form a sandwich structure with M, where at least L.sub.1 or L.sub.2 is substituted by or condensed with a ferrocene or ruthenocene radical. R.sub.1 is C, Si, Ge or Sn or the whole bridge A(R.sub.1).sub.n B is a biphenylene radical which is unsubstituted or substituted by A and/or B, A and B have the meanings of X.sub.1 and X.sub.2, n is an integer from 0 to 4.