Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1982-02-22
1983-11-29
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430223, 430226, G03C 700, G03C 140, G03C 110
Patent
active
044181434
ABSTRACT:
Azo dyes of formula II are released on development from dye releasers which are associated with a light-sensitive silver halide emulsion layer. The azo dyes are chelatable and form with metal ions blue or cyan dye-metal-complex image dyes. ##STR1## In the formula A.sup.1 and A.sup.2 represent electronegative substituents whose meta-sigma values .sigma..sub.m (according to D. H. McDaniel and H. C. Brown in J. Org. Chem. 23, 420 et seq (1958) conform to at least one of the following three relationships:
REFERENCES:
patent: 4142891 (1979-03-01), Baigrie et al.
patent: 4183754 (1980-01-01), Chapman et al.
patent: 4195994 (1980-04-01), Chapman
patent: 4287292 (1981-09-01), Chapman et al.
Bergthaller Peter
Heidenreich Holger
Runzheimer Hans-Volker
Schenk Gunther
Wolfrum Gerhard
Agfa-Gevaert Aktiengesellschaft
Schilling Richard L.
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