Coated photographic base material

US4663236A · kind A · utility

Assignee

• Felix Schoeller GmbH & Co. KG · DE

Inventors

• Reiner Anthonsen · Bramsche, DE
• Ferencz Kertesz · Bissendorf, DE
• Heinz Trentmann · Osnabrück, DE
• Wieland Sack · Bissendorf, DE

Key dates

• Filing date: Apr 11, 1985
• Grant date: May 5, 1987
• Expiry date: Apr 11, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31935
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Photographic base materials are described which contain on at least one side thereof a coating whose binder component is produced predominantly from unsaturated compounds and which has been hardened by means of energy supplying radiation. Discoloration in connection with wet developing is avoided by including within the coating material, before hardening thereof, at least one unsaturated monomeric, oligomeric or polymeric hydroxyfunctional substance and by maintaining the molal concentration of the hydroxyl groups at a value of at least 2. The coating material as defined in the invention is suited for use as a base for photographic layers which are developed wet, as well as for those which are developed dry.