Color photographic materials comprising phenolic thiane derivatives as light and thermal oxidation stabilizers
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United States of America Patent
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Dec 3, 1991
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app pub date -
Feb 6, 1991
filing date -
Sep 30, 1987
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Abstract
Phenolic thiane derivatives of the formula I or II ##STR1## in which n is 0, 1 or 2 and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, T and Z are as defined in claim 1, are effective stabilizers for color photography recording materials, in particular for the yellow layer. They act not only as light stabilizers but also as stabilizers against thermal oxidation.
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