| US 7,501,389 B2 | ||
| Bispidon-derivated ligands and complexes thereof for catalytically bleaching a substrate | ||
| Ronald Hage, Vlaardingen (Netherlands); Joachim Lienke, Vlaardingen (Netherlands); and Patricia Veerman-Petersen, Vlaardingen (Netherlands) | ||
| Assigned to Conopco Inc., Englewood Cliffs, N.J. (US) | ||
| Appl. No. 10/576,647 PCT Filed Oct. 18, 2004, PCT No. PCT/EP2004/011835 § 371(c)(1), (2), (4) Date May 25, 2007, PCT Pub. No. WO2005/042532, PCT Pub. Date May 12, 2005. |
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| Claims priority of application No. 0325432.3 (GB), filed on Oct. 31, 2003. | ||
| Prior Publication US 2008/0035885 A1, Feb. 14, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. C11D 7/32 (2006.01); C11D 7/38 (2006.01); C11D 7/54 (2006.01) | ||
| U.S. Cl. 510—376 [510/312; 510/372; 510/500; 252/186.39; 502/200; 502/324; 502/325] | 23 Claims |
| 1. A bleaching composition comprising:
a) a monomer ligand, L, or transition metal catalyst thereof of a ligand having the formula (I):
 wherein R1 and R2 are be selected from the group consisting of:
a group containing a heteroatom capable of coordinating to a transition metal;
a —C1-C22-optionally substituted-alkyl;
a —C6-C10-aryl;
a —C1-C4-alkyl-C6-C10-aryl; and,
wherein at least one of R1 and R2 is a non-aromatic hydrocarbon group, the non-aromatic hydrocarbon group being a C8-C22-alkyl
chain;
R3 and R4 are independently selected from: hydrogen, C1-C4-alkyl, phenyl, electron withdrawing groups and reduced products
and derivatives thereof;
X is selected from: C═O, a ketal derivative of C═O, a thioketal of derivative of C═O, and —[C(R6)2]y— wherein y takes a value 0 or 1; each R6 is independently selected from hydrogen, hydroxyl, O—C1-C24-alkyl, O-benzyl, O—(C═O)—C1-C24-alkyl,
and C1-C24-alkyl;
z groups are same monocyclic or dicyclic heteroaromatic N-donor groups of the form:
 b) the balance carriers and adjunct ingredients.
|