Claims
- 1. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye which has the following formula: ##EQU1## wherein: a. k represents 0 or 1;
- b. m represents 0 or 1;
- c. each L represents a methine group;
- d. A represents oxygen, sulfur or N--R.sub.1 ;
- e. R.sub.1 represents an alkyl group, an alkenyl group or an aryl group;
- f. Z.sub.1 represents the nonmetallic atoms completing a 5- or 6-membered heterocyclic ring whose skeletal atoms consist of the oxygen, sulfur or nitrogen atom of A, carbon atoms and one other atom chosen from the group consisting of carbon, oxygen, nitrogen, selenium and sulfur atoms, and
- g. Y represents the atoms necessary to complete a nitro-substituted phenyl or naphthyl group.
- 2. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye according to claim 1 in which said dye is present in an amount sufficient to impart an optical density to said support of 0.20.
- 3. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye according to claim 2 in which said dye is present in an amount sufficient to impart an optical density to said support of 0.50.
- 4. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye according to claim 1 in which said film support is a solvent cast photographic film support.
- 5. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye according to claim 1 in which said film support is a melt formed polymeric photographic film support.
- 6. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye according to claim 1 in which said film support is comprised of a polyalkylene or a terephthalic acid polyester.
- 7. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye according to claim 6 in which said film support is comprised of polyethylene or poly(ethylene tetephthalate).
- 8. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye according to claim 1 wherein Z.sub.1 represents the nonmetallic atoms completing a thiazole nucleus, an oxazole nucleus, a selenazole nucleus, a thiazoline nucleus, a pyridine nucleus, an imidazole nucleus, a quinoline nucleus, an indolenine nucleus, an imidazo[4,5-b]quinoxaline nucleus, a 3H-pyrrolo[2,3-b]pyridine nucleus, a thiazolo[4,5-b]quinoline nucleus, a 2H-pyran nucleus, a 4H-pyran nucleus or a dithiolane nucleus.
- 9. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye according to claim 1 wherein Y represents the atoms necessary to complete a nitro-substituted phenyl group having a 6-ring position electron-withdrawing group, a nitro-substituted phenyl or 1-naphthyl group having a 4-ring position electron-withdrawing group, a nitro-substituted phenyl group having 4- and 6-ring position electron-withdrawing groups.
- 10. An otherwise transparent polymeric photographic film support having incorporated therein a photobleachable dye having the following formula: ##STR12## wherein: a. k represents 0 or 1;
- b. m represents 0 or 1;
- c. each L represents a methine group;
- d. A represents oxygen, sulfur or N--R.sub.1 ;
- e. Z.sub.1 represents the nonmetallic atoms completing a 5- or 6-membered heterocyclic ring selected from the group consisting of an oxazole nucleus, a thiazole nucleus, a selenazole nucleus, a 3,3-dialkylindolenine nucleus, an imidazo[4,5-b]quinoxaline nucleus, a thiazoline nucleus, a pyridine nucleus, an imidazole nucleus, a quinoline nucleus, a 3H-pyrrolo[2,3-b]pyridine nucleus and a thizolo[4,5-b]quinoline nucleus, a 2H-pyran nucleus, a 4H-pyran nucleus and a dithiolane nucleus; and
- f. Y represents the atoms necessary to complete a nitro-substituted phenyl or 1-naphthyl group having a 4-ring position electron-withdrawing group, a nitro-substituted phenyl group having a 6-position electron-withdrawing group or a nitro-substituted phenyl group having 4- and 6-ring position electron-withdrawing groups.
- 11. An otherwise transparent polymeric photographic film support consisting essentially of polyethylene or poly(ethylene terephthalate) having incorporated therein a photobleachable dye, wherein said dye is 6-chloro-2-(2,4-dinitrobenzylidene)-1,3-diethyl-2,3-dihydro-1H-imidazo[4,5-b]quinoxaline.
- 12. An otherwise transparent polymeric photographic film support consisting essentially of polyethylene or poly(ethylene terephthalate) having incorporated therein a photobleachable dye, wherein said dye is selected from:
- a. 2(2,4-dinitrobenzylidene)-1,3-diethyl-2,3-dihydro-1H-imidazo[4,5-b]quinoxaline;
- b. 2-(2,4-dinitrobenzylidene)-3-ethyl-2,3-dihydrothiazolo[4,5-b]quinoline;
- c. 2-(2,4-dinitrobenzylidene)-3-ethyl-6-nitrobenzothiazoline;
- d. 2-(2,4-dinitrobenzylidene)-1,3,3-trimethylindolenine;
- e. 4-(2,4-dinitrobenzylidene)-1-ethylquinoline; and
- f. 4-(2,4-dinitrobenzylidene)-2,6-diphenyl-4H-pyran.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a division of Ser. No. 443,654, filed Feb. 19, 1974, (now abandoned) which is a continuation-in-part of application Ser. No. 260,618, filed June 7, 1972 (now abandoned), which is a continuation-in-part of application Ser. No. 176,681, filed Aug. 25, 1971 (now abandoned).
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
1880573 |
Wendt et al. |
Oct 1932 |
|
3104973 |
Sprague et al. |
Sep 1963 |
|
3647433 |
Contois |
Mar 1972 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
443654 |
Feb 1974 |
|
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
260618 |
Jun 1972 |
|
Parent |
176681 |
Aug 1971 |
|