The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 1986
Filed:
Jan. 02, 1985
Frank V Lovecchio, Rochester, NY (US);
James A Reczek, Rochester, NY (US);
Robert C Stewart, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A process for obtaining highly stable color photographic images utilizes a silver halide photographic element comprising an essentially colorless, immobile compound which is capable of complexing with ferrous ions to form a dye. The complexing compound contains a complexing moiety which is represented by the formula: ##STR1## wherein m is zero or a positive integer 1 to 3, n and p are independently 0 or 1 and represents a single or double bond. Z is R.sup.1 --N.dbd., O.dbd., S.dbd., R.sup.1 --P.dbd., (R.sup.1).sub.2 P-- or (R.sup.1).sub.3 P.dbd., and when Z is (R.sup.1).sub.2 P--, n is 1, otherwise n is 0. R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently hydrogen, amino, hydroxy, mercapto, alkoxy, alkyl, aryl or a heterocyclic moiety. When R.sup.6 is so defined, p is 1 and is a single bond. If m is 0, R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, and R.sup.3 and R.sup.4 taken together can independently represent the carbon and heteroatoms necessary to complete a substituted or unsubstituted carbocyclic or heterocyclic nucleus, or if m is 1 to 3, R.sup.1 and R.sup.2, R.sup.5 and R.sup.6, and R.sup.3 and R.sup.4 can independently represent the carbon and heteroatoms necessary to complete a substituted or unsubstituted heterocyclic nucleus. When R.sup.5 and R.sup.6 are so defined, p is 0 when is a double bond, and p is 1 when is a single bond.