TREA

Photographic speed increasing and latent image stabilizing compounds

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Information

  • Patent Grant
  • T104903
  • Patent Number
    T104,903
  • Date Filed
    Tuesday, February 7, 1984
    40 years ago
  • Date Issued
    Tuesday, December 4, 1984
    39 years ago
Information
Abstract
Photographic silver halide emulsions show increased speed and reduced latent image fading when a compound of the following structure is incorporated: ##STR1## wherein: X is ##STR2## Y.sup.1 and Y.sup.2 individually represent hydrogen or an aromatic nucleus or together represent the atoms completing a fused aromatic nucleus;Z is ##STR3## R is hydrogen or lower alkyl of from 1 to 5 carbon atoms; and R.sup.1 is hydrogen or methyl.
Description
Divisions (1)
Number Date Country
Parent 466244 Feb 1983
Continuation in Parts (1)
Number Date Country
Parent 320794 Nov 1981