The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2000
Filed:
Nov. 03, 1999
Michel Gilbert Delroisse, Wirral, GB;
Bernard Lucas Feringa, Groningen, NL;
Ronald Hage, Vlaardingen, NL;
Roelant Mathijs Hermant, Vlaardingen, NL;
Robertus Everardus Kalmeijer, Vlaardingen, NL;
Jean Hypolites Koek, Vlaardingen, NL;
Christiaan Lamers, Vlaardingen, NL;
Minze Theunis Rispens, Groningen, NL;
Stephen William Russell, Vlaardingen, NL;
Ronaldus Theodorus Vliet, Vlaardingen, NL;
Jane Whittaker, Wirral, GB;
Unilever Home & Personal Care USA, division of Conopco, Inc., Greenwich, CT (US);
Abstract
A bleach and oxidation catalyst is provided comprising a catalytically ace iron, manganese or copper complex including a specified pentadentate nitrogen-containing ligand. The metal complex can activate hydrogen peroxide or peroxyacids and provides favourable stain removal properties. In addition, a considerably improved stability of these metal complex compounds in alkaline aqueous environment has been obtained, in particular at the peroxy compound concentrations generally present in the fabric washing liquor.