Photographic bleach compositions containing bleach-accelerating compounds

US4201585A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Robert J. Pollet · Vremde, BE
• Camille Angelina Vandeputte · Mortsel, BE
• Francis J. Sels · Kontich, BE
• George F. Van Veelen · Mortsel, BE

Key dates

• Filing date: Oct 17, 1978
• Grant date: May 6, 1980
• Expiry date: Oct 17, 1998

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C5/44
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The processing of exposed photographic silver halide color materials is described while using a bleach or bleach-fixing bath containing better bleach-accelerating compounds. The bleach-accelerating compounds are polyoxyethylene compounds comprising at least 20 mol % of recurring oxyethylene units, which carry a thioether group in a sidechain.