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

Richard George Smith

David Andrew Jones

Michel Gilbert Delroisse

John Francis Wells

Ronald Hage

David William Thornthwaite

Daniel Convents

Steven Howell

Neil James Parry

Cornelis Paul Van Der Logt

Joachim Lienke

Philippus Cornelis Van Der Hoeven

Sandra Hemmington

Julie Little

Monique Doornink

Rene Appel

Oxidation process and composition

A method of delivering a benefit agent to a selected area of a fabric for exerting a predetermined activity, wherein the area is pre-treated with a multi-specific binding molecule which has a high binding affinity to said area through one specificity and is capable of binding to said benefit agent through another specificity, followed by contacting said pre-treated area with said benefit agent, to enhance said pre-determined activity to said area. Preferably, the binding molecule is an antibody or fragment thereof, or a fusion protein comprising a cellulose binding domain and a domain having a high binding affinity to another ligand which is directed to said benefit agent. The method is useful for stain removal, perfume delivery, and treating collars and cuffs for wear.

Method of treating fabrics and apparatus used therein

The invention relates to catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen or air in the presence of an air bleaching facilitator.

Enhancement of air bleaching catalysts

A method for bleaching stained fabrics is provided by pretreating the stained fabric, before washing, with a pretreatment composition that comprises a ligand that forms a transition metal complex as bleach catalyst, the complex catalysing bleaching of stains by atmospheric oxygen. The pretreatment composition preferably comprises an iron complex comprising the ligand N,N-bis(pyridin-2-yl-methyl)-1,1-bis(pyridin-2-yl)-1-aminoethane. One or both of the pretreatment composition and the wash liquor are substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system. The pretreatment provides improved or broader stain profile bleaching.

Method of pretreating and bleaching stained fabrics

A method for bleaching stained fabrics is provided by washing a stained fabric in an aqueous wash liquor in the presence of a wash additive that comprises a ligand that forms a transition metal complex as bleach catalyst, the complex catalysing bleaching of stains by atmospheric oxygen. The wash additive preferably comprises an iron complex comprising the ligand N,N-bis(pyridin-2-yl-methyl)-1,1-bis(pyridin-2-yl)-1-aminoethane. One or both of the wash additive and the wash liquor are substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system. The wash additive provides improved or broader stain profile bleaching.

Method of bleaching stained fabrics

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Bebington Wirral, United Kingdom

Richard George Smith