G - Physics – 03 – C
Patent
G - Physics
03
C
96/100
G03C 1/40 (2006.01) C07C 43/178 (2006.01) C07D 307/12 (2006.01) C07D 307/42 (2006.01) C07D 309/12 (2006.01) C07F 9/40 (2006.01) G03C 7/392 (2006.01)
Patent
CA 1178838
Abstract of the disclosure DEC 4 1984 Colour photographic silver halide material which contains in at least one coupler containing silver halide emulsion layer or in a layer adjacent thereto (a) a hydroquinone of the formula Image wherein p is 1 or 2 and q is 0 or 1, provided that p + q is 1 or 2, R is a radical of the formula Image wherein Q is selected from the residues (1) -COZR4, wherein Z is 0 or NR5, and R4 is hydrogen, alkyl optionally interrupted by oxygen, cycloalkyl, alkenyl, aryl, aralkyl or a heterocyclic ring, and R5 is hydrogen or alkyl or together with R4 and the nitrogen atom to which they are bonded form a heterocyclic ring. (2) -OX, wherein X is R5 or -COR7, wherein R7 is hydrogen, alkyl cycloalkyl, alkenyl, aryl or aralkyl, (3) -NR8R9, wherein R8 is hydrogen or alkyl, and R9 is hydrogen, alkyl or -COR7, or R8 and R9 together with the nitrogen atom to which they are bonded form a ring, (4) -P(O)(OR10)([O]xR11), wherein x is 0 or 1, and if x is 1, R10 and R11 are hydrogen or alkyl or form together an alkylene chain, and if x is 0 R10 is alkyl, (5) -SO2NR5R6, wherein R5 and R6 are hydrogen or alkyl, or (6) cyano, n is 1 to 20, k is 1 or 2, R2 and R3 are alkyl and if Q is CO2R4, either R2 or R3 is optionally substituted by -CO2R4, or R2 and R3 form together an alkylene chain, and R1 is alkyl or a group of the formula Image or (b) a salt thereof, has an improved stability to light.
404780
Ciba Specialty Chemicals Holding Inc.
Gowling Lafleur Henderson Llp
LandOfFree
Photographic material including a colour coupler- containing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photographic material including a colour coupler- containing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic material including a colour coupler- containing... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1211427