Detergent compositions inhibiting dye transfer in washing

US5445651A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Christiaan Arthur Jacques Kamiel Thoen · Haasdonk, BE
• Adbennaceur Fredj · Vilvoorde, BE
• James Pyott Johnston · Overijse, BE

Key dates

• Filing date: Jul 18, 1994
• Grant date: Aug 29, 1995
• Expiry date: Jul 18, 2014

Classification

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

Abstract

Dye transfer inhibiting compositions are disclosed, comprising: (A) a metallo catalyst selected from (a) metallo porphin and water-soluble or water-dispersible derivatives thereof; (b) metallo porphyrin and water-soluble or water-dispersible derviatives thereof; (c) metallo phthalocyanine and water-soluble or water-dispersible derivatives thereof; (B) an enzyme oxidation scavenger, (C) an enzymatic system capable of generating hydrogen peroxide, and (D) an enzyme, preferably selected from protease, lipase, amylase, and cellulase. The enzyme oxidation scavenger (B) operates to stabilize and protect the enzymes (D) from loss of activity in the wash.