Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1994-06-08
1996-08-06
Wright, Lee C.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430551, 430554, 430555, 430558, 430638, G03C 7392, G03C 134
Patent
active
055432760
ABSTRACT:
Thermal and photochemical yellowing of a color photographic element, such as a color print, is inhibited by incorporating into the photographic element an ionizable epoxy compound having the formula: ##STR1## wherein: R is H, alkyl, substituted alkyl, aryl, or substituted aryl;
L.sub.1 is alkyl, substituted alkyl, aryl, or substituted aryl;
L.sub.2 is O, CO, S, SO.sub.2, PO.sub.2, C(O)O, NHCO or NHSO.sub.2 ;
L.sub.3 is alkyl or substituted alkyl;
m is 0 or 1;
p is 0 or 1;
X is selected from the group consisting of ##STR2## wherein: R' is H, alkyl, substituted alkyl, aryl or substituted aryl,
or, if L.sub.2 comprises an ionizable group, X is alkyl, substituted alkyl, aryl or substituted aryl.
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Chari Krishnan
Krishnamurthy Sundaram
Smith, Jr. Wendell F.
Spara Paul P.
Anderson Andrew J.
Eastman Kodak Company
Wright Lee C.
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