C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/39 (2006.01) C07D 213/38 (2006.01) C07D 213/55 (2006.01) C07D 401/14 (2006.01) C11D 3/28 (2006.01) D06L 3/02 (2006.01)
Patent
CA 2383596
The invention relates to a liquid bleaching composition for catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen or air. A liquid bleaching composition is provided comprising an organic substance which forms a complex with a transition metal, the complex catalysing bleaching of a substrate by atmospheric oxygen, and a liquid carrier or solvent, wherein the composition is substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system. Also provided is a method of bleaching a substrate comprising applying the liquid bleaching composition to the substrate. Also provided is a method of treating a textile by contacting the textile with the liquid bleaching composition, whereby the complex catalyses bleaching of the textile by atmospheric oxygen after the treatment.
L'invention concerne une composition blanchissante liquide permettant de blanchir des substrats par catalyse, notamment des tissus de buanderie, à l'aide d'oxygène de l'atmosphère ou d'air. Ladite composition de l'invention renferme, d'une part, une substance organique qui forme un complexe avec un métal de transition, le complexe catalysant le blanchiment d'un substrat au moyen de l'oxygène de l'air, et, d'autre part, un solvant ou porteur liquide. Cette composition est pratiquement exempte d'agent de blanchiment au peroxygène ou d'un système de blanchiment à base de péroxy ou générant ce dernier. Ladite invention a également trait à un procédé de blanchiment d'un substrat consistant à appliquer la composition de blanchiment liquide au substrat, ainsi qu'à un procédé de traitement d'un textile par mise en contact dudit textile avec ladite composition, le complexe catalysant le blanchiment du textile au moyen de l'oxygène de l'air après traitement.
Hage Ronald
Veerman Simon Marinus
Gowling Lafleur Henderson Llp
Plc Unilever
The Sun Products Corporation
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