Inhibiting dye transfer in washing or bleaching

US4077768A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• James Pyott Johnston · Overijse, BE
• John R. Tate · Garden Grove, US
• by Sidney Alfred Tate, administrator

Key dates

• Filing date: Jun 17, 1976
• Grant date: Mar 7, 1978
• Expiry date: Jun 17, 1996

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06L4/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for washing or bleaching textiles in which "dye transfer" is inhibited by the use of an oxidizing bleaching agent together with a catalytic compound, such as iron phorphins, haemin chloride or iron phthalocyanines. Compositions for use in this washing or bleaching process are also taught.