Shifted photographic dyes and compositions, elements and processes employing them
Shifted photographic dyes which have good storage stability, yet rapidly unblock under processing conditions contain a blocked hydroxy group and a neighboring group that anchimerically assists the hydrolytic cleavage of the blocking group under processing conditions.
Description
Patent History
Patent number: T999003
Type: Grant
Filed: Apr 25, 1980
Date of Patent: Oct 7, 1980
Inventors: John A. Ford (Rochester, NY), Gregory J. Lestina (Rochester, NY)
Application Number: 6/143,659
Type: Grant
Filed: Apr 25, 1980
Date of Patent: Oct 7, 1980
Inventors: John A. Ford (Rochester, NY), Gregory J. Lestina (Rochester, NY)
Application Number: 6/143,659
Classifications
Current U.S. Class:
Redox Cleavable Dye Or Dye Precursor Releaser (430/223);
260/152;
260/192;
260/196;
260/206;
260/156;
260/157;
260/159;
260/165
International Classification: G03C 554; C07C10704;
International Classification: G03C 554; C07C10704;
