Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With oxygen or halogen containing chemical bleach or oxidant...
Reexamination Certificate
2006-05-23
2006-05-23
Gupta, Yogendra N. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With oxygen or halogen containing chemical bleach or oxidant...
C510S302000, C510S438000
Reexamination Certificate
active
07049278
ABSTRACT:
The invention relates to catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen and a peroxyl species. A method of bleaching a substrate is provided that comprises applying to the substrate, in an aqueous medium, a specified organic substance which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by atmospheric oxygen and a peroxyl species. Also provided is a bleaching composition comprising, in an aqueous medium, atmospheric oxygen and an organic substance which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by the atmospheric oxygen, wherein the aqueous medium is provided with a peroxygen bleach or a peroxy-based or peroxy-generating bleach system.
REFERENCES:
patent: 4087369 (1978-05-01), Wevers
patent: 4126573 (1978-11-01), Johnston
patent: 4391723 (1983-07-01), Bacon et al.
patent: 4399049 (1983-08-01), Gray et al.
patent: 4486327 (1984-12-01), Murphy et al.
patent: 4626373 (1986-12-01), Finch et al.
patent: 4681695 (1987-07-01), Divo
patent: 4728455 (1988-03-01), Rerek
patent: 4756798 (1988-07-01), Lachenal et al.
patent: 4786431 (1988-11-01), Broze et al.
patent: 5747438 (1998-05-01), MacBeath
patent: 5747441 (1998-05-01), Domburg et al.
patent: 5755992 (1998-05-01), Jeffrey et al.
patent: 5965505 (1999-10-01), Baillely et al.
patent: 6022490 (2000-02-01), Hermant et al.
patent: 197 21 886 (1998-12-01), None
patent: 199 09 546 (2000-06-01), None
patent: 0 436 062 (1991-07-01), None
patent: 95/28464 (1995-10-01), None
patent: 95/34628 (1995-12-01), None
patent: 97/38074 (1997-10-01), None
patent: 97/48787 (1997-12-01), None
patent: 00/12667 (2000-03-01), None
patent: 00/12808 (2000-03-01), None
patent: 00/47812 (2000-08-01), None
patent: 00/60044 (2000-10-01), None
patent: 01/16270 (2001-03-01), None
Hage Ronald
Swarthoff Ton
Tetard David
Thornthwaite David William
Gupta Yogendra N.
Mitelman Rimma
Petruncio John M
Unilever Home and Personal Care USA Division of Conopco, Inc.
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