| US 7,358,209 B2 | ||
| Polymerisation catalysts | ||
| Vernon Charles Gibson, London (United Kingdom); Grant Berent Jacobsen, Tervuren (Belgium); David John Jones, London (United Kingdom); and Richard James Long, Leeds (United Kingdom) | ||
| Assigned to Ineos Europe Limited, Hampshire (United Kingdom) | ||
| Filed on Aug. 31, 2006, as Appl. No. 11/513,205. | ||
| Application 11/513205 is a division of application No. 10/548275, granted, now 7,144,839, previously published as PCT/GB2004/000141, filed on Mar. 18, 2004. | ||
| Claims priority of application No. 0306308.8 (GB), filed on Mar. 19, 2003. | ||
| Prior Publication US 2006/0293473 A1, Dec. 28, 2006 | ||
| Int. Cl. C08F 4/68 (2006.01); C08F 4/622 (2006.01); C08F 4/623 (2006.01); C08F 210/00 (2006.01) | ||
| U.S. Cl. 502—209 [502/103; 502/162; 502/171; 526/161; 526/172; 526/169; 556/21; 556/42] | 20 Claims |
1. A transition metal complex having the following Formula A:
 wherein the monovalent groups R1 and R2 are independently selected from —Ra, —ORb, —NRcRd, and —NHRe;
the monovalent groups Ra, Rb, Rc, Rd, and Re, and the divalent group R3 are independently selected from (i) aliphatic hydrocarbon, (ii) alicyclic hydrocarbon, (iii) aromatic hydrocarbon, (iv) alkyl
substituted aromatic hydrocarbon (v) heterocyclic groups and (vi) heterosubstituted derivatives of said groups (i) to (v);
M is vanadium; E is phosphorus or arsenic; X is an anionic group, L is a neutral donor group; n is 1 or 2, y and z are independently
zero or integers such that the number of X and L groups satisfy the valency and oxidation state of the metal M.
|