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Gelatin-containing dispersants for silver halide surfactants

Assignee: Wolfen Filmfab Veb
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Filing: 1988-12-09
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Granted: —
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Expires: 2008-12-09
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Abstract

Abstract Translated from German Die Erfindung bezieht sich auf gelatinehaltige Dispergate fuer fotografische Silberhalogenidmaterialien. Erfindungsgemaess enthalten gelatinehaltige Dispergate einen wasserunloeslichen p-Hydroxybenzoesaeurealkylester in Kombination mit einem Alkyl- bzw. Arylsulfonat der allgemeinen FormelASO3Z, in derA Alkyl mit mindestens 8 C-Atomen, Phenyl, Naphthyl, ZNa, K bedeuten. Die Bestaendigkeit gegen Pilzwachstum und bakterielle Zersetzung waehrend der Lagerung wird erhoeht. Farbkupplerdispergate zeichnen sich durch hohe Umsetzungsgrade aus. The invention relates to gelatin-containing dispersates for photographic silver halide materials. According to the invention, gelatin-containing dispersants comprise a water-insoluble p-hydroxybenzoic acid alkyl ester in combination with an alkyl or arylsulfonate of the general formula AASO3Z in which A denotes alkyl having at least 8 C atoms, phenyl, naphthyl, ZNa, K. The resistance to fungal growth and bacterial decomposition during storage is increased. Color coupler dispersants are characterized by high degrees of conversion.

Inventors

  • 👤 Ulrich Meisel
  • 👤 Axel Kramer
  • 👤 Wolf-Dieter Juelich
  • 👤 Christoph Roth
  • 👤 Gerhard Woitschig
  • 👤 Wolfgang Weuffen
  • 👤 Dieter Schulze

Bibliographic Details

Application Number —
Jurisdiction DD
Data Source google_patents
Last Synchronized 2026-11-08 17:06
CPC Classifications
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