Patent US2495094A successfully refreshed from Google Patents.
Patent EP0320762A2 successfully refreshed from Google Patents.
← Back to Patent Explorer
EP0320762A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for the preparation of a chiral, stereorigid metallocen compound

Assignee: Hoechst AG
•
Filing: 1988-12-07
•
Granted: —
•
Expires: 2008-12-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from German Durch Umsetzung einer Silylindenylverbindung der Formel II [R¹R²Si(indenyl)2]Me ? (II) (Me¹ = Alkalimetall) mit einem Titan- Zirkon- oder Hafniumtetrahalogenid erhält man eine chirale, stereorigide Metallocenverbindung der Formel I [R¹R²Si(indenyl)2]Me²X2 (I) (Me² = Ti, Zr, Hf), welche als fast reines Racemat anfällt und als Katalysatorkomponente für die Polymerisation von 1-Olefinen dienen kann. By reacting a silylindenyl compound of the formula II [R¹R²Si (indenyl) 2] Me? (II) (Me¹ = alkali metal) with a titanium, zirconium or hafnium tetrahalide gives a chiral, stereorigid metallocene compound of the formula I [R¹R²Si (indenyl) 2] Me²X2 (I) (Me² = Ti, Zr, Hf), which as almost pure racemate is obtained and can serve as a catalyst component for the polymerization of 1-olefins.

Inventors

  • 👤 Jürgen Dr. Rohrmann
  • 👤 Wolfgang Anton Prof. Dr. Hermann

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 20:47
CPC Classifications
C; C07; C07F; C07F17/00; Y; Y10; Y10S; Y10S526/00; Y10S526/943

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag