Unilever Home and Personal Care Usa, Division of Conopco, Inc.

Minze Theunis Rispens

Ronald Hage

Jean Hypolites Koek

Bernard Lucas Feringa

Roelant Mathijs Hermant

Michel Gilbert Delroisse

Stephen William Russell

Ronaldus Theodorus Vliet

Christiaan Lamers

Robertus Everardus Kalmeijer

Jane Whittaker

A detergent bleaching composition is provided comprising a compound inclug a specified pentadentate nitrogen-containing ligand. The compound can activate hydrogen peroxide or peroxyacids and provides favourable stain removal properties, particularly in the presence or iron, manganese or copper ions. In addition, an improved stability in alkaline aqueous environment has been obtained, in particular at the peroxy compound concentrations generally present in the fabric washing liquor.

Detergent bleaching composition comprising pentadentate ligand

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.

Bleach and oxidation catalyst

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Groningen, Netherlands

Minze Theunis Rispens