Catalyst combination, isotactic polymers and also a method for producing linear isotactic polymers and the use thereof

• US 7,381,679 B2
• Filed: 01/27/2004
• Issued: 06/03/2008
• Est. Priority Date: 01/28/2003
• Status: Expired due to Fees

• Current Assignee: Sud-Chemie AG (Clariant AG)
• Original Assignee: Sud-Chemie AG (Clariant AG)
• Inventors: Rieger, Bernhard, Deisenhofer, Sandra
• Primary Examiner(s): Lu; Caixia
• Application Number:
  US10/543,703
• Publication Number:
  US 20070015657A1
• Time in Patent Office: 1,589 Days
• Field of Search: 526/160, 526/165, 526/161, 526/943, 502/103, 502/152, 502/155
• US Class Current: 502/152
• CPC Class Codes: C08F 10/06 Propene
• CPC Class Codes: C08F 110/06 Propene
• CPC Class Codes: C08F 2500/01 High molecular weight, e.g. >800,000 Da.
• CPC Class Codes: C08F 2500/03 Narrow molecular weight distribution, i.e. Mw/Mn < 3
• CPC Class Codes: C08F 2500/15 Isotactic
• CPC Class Codes: C08F 4/65908 in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
• CPC Class Codes: C08F 4/65912 in combination with an organoaluminium compound
• CPC Class Codes: C08F 4/65927 two cyclopentadienyl rings being mutually bridged
• CPC Class Codes: Y10S 526/943 Polymerization with metallocene catalysts

Abstract

The present invention relates to a catalyst combination for producing linear isotactic polymers containing an asymmetrical metal complex and also an activator.

Claims

1. Catalyst combination for producing linear isotactic polymers containing (i) an asymmetrical metal complex of the general formula I,

2. Catalyst combination according to claim 1, wherein the metal complex according to the general formula I is a compound of the general formula II,

3. Catalyst combination according to claim 1 wherein the metal complex according to the general formula I is a compound of the formula III,

4. Catalyst combination according to claim 1, wherein the metal complex according to the general formula I is a compound of the general formula IV,

5. Catalyst combination according to claim 1, wherein the metal complex according to the general formula I is a compound of the formula V,

6. Catalyst combination according to claim 1, wherein the activator is an open-chain or cyclic alumoxane compound of the general formula VI or VII,

7. Catalyst combination according to claim 1, wherein the quantity ratio between metal complex and activator is chosen such that the atomic ratio between aluminium from the alumoxane and/or boronlaluminium from the cationic activator and the transition metal from the metal complex is present in the range of 1:

1 to 10⁶;

1.