Process for hardening photographic layers with carbodiimide compounds containing sulphobetaine groups

US4043818A · kind A · utility

Assignee

• AGFA-Gervaert AG · DE

Inventors

• Wolfgang Himmelmann · Leverkusen, DE
• Erwin Ranz · Leverkusen, DE
• Edy Roche

Key dates

• Filing date: Aug 12, 1975
• Grant date: Aug 23, 1977
• Expiry date: Aug 12, 1995

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C1/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

As quick-acting hardeners for protein-containing photographic layers, which do not adversely affect the sensitizers and color couplers in the photographic materials, carbodiimide compounds containing sulphobetaine groups are used.