Fabric care method

US6562775B2 · kind B2 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Frank Bachmann · Glückstadt, DE
• Josef Dannacher · Basel, CH
• Martin Studer · Basel, CH
• Beat Freiermuth · Buschwiller, FR
• Cornelia Makowka · Laufenbürg, DE
• Peter Weingartner · Dölsach, AT
• Grit Richter · Neuenbürg, DE
• Gunther Schlingloff · Östringen, DE

Key dates

• Filing date: Feb 4, 2002
• Grant date: May 13, 2003
• Expiry date: Feb 4, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3932
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention provides a process for inhibiting the re-absorption of migrating dyes in the wash liquor, comprising introducing into a wash liquor containing a peroxide-containing detergent, from 0.5 to 150 mg per liter of wash liquor, of one or more manganese containing compounds.