Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1983-11-25
1985-05-21
Brown, J. Travis
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430216, 430372, 430505, 430523, 430961, G03C 726
Patent
active
045186880
ABSTRACT:
Compounds of the formula I ##STR1## in which X is a group ##STR2## and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are monovalent organic radicals, at least one of which contains a sterically hindered phenol group and at least one of which contains a polyalkylpiperidine group, are outstanding light stabilizers for color-photographic recording materials. They also have a stabilizing action on the photo dyes and their precursors when stored in the dark.
REFERENCES:
patent: 4185007 (1980-01-01), Rasberger et al.
patent: 4268593 (1981-05-01), Leppard et al.
patent: 4452884 (1984-06-01), Leppard
Leppard David G.
Rody Jean
Brown J. Travis
Ciba-Geigy AG
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