US2364374A - Color photographic materials - Google Patents
Color photographic materials Download PDFInfo
- Publication number
- US2364374A US2364374A US400925A US40092541A US2364374A US 2364374 A US2364374 A US 2364374A US 400925 A US400925 A US 400925A US 40092541 A US40092541 A US 40092541A US 2364374 A US2364374 A US 2364374A
- Authority
- US
- United States
- Prior art keywords
- color
- salt
- water
- resins
- salts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title description 2
- 150000003839 salts Chemical class 0.000 description 20
- 239000000839 emulsion Substances 0.000 description 19
- 239000011347 resin Substances 0.000 description 19
- 229920005989 resin Polymers 0.000 description 19
- 230000008878 coupling Effects 0.000 description 17
- 238000010168 coupling process Methods 0.000 description 17
- 238000005859 coupling reaction Methods 0.000 description 17
- 229910052709 silver Inorganic materials 0.000 description 9
- 239000004332 silver Substances 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 108010010803 Gelatin Proteins 0.000 description 6
- 229920000159 gelatin Polymers 0.000 description 6
- 239000008273 gelatin Substances 0.000 description 6
- 235000019322 gelatine Nutrition 0.000 description 6
- 235000011852 gelatine desserts Nutrition 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 159000000000 sodium salts Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- LOUPRKONTZGTKE-WZBLMQSHSA-N Quinine Chemical compound C([C@H]([C@H](C1)C=C)C2)C[N@@]1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-WZBLMQSHSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- LOUPRKONTZGTKE-UHFFFAOYSA-N cinchonine Natural products C1C(C(C2)C=C)CCN2C1C(O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000007530 organic bases Chemical class 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- QLEITUFVKZSFRB-UHFFFAOYSA-N 2-benzofuran-1,3-dione;propane-1,2,3-triol Chemical compound OCC(O)CO.C1=CC=C2C(=O)OC(=O)C2=C1 QLEITUFVKZSFRB-UHFFFAOYSA-N 0.000 description 1
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 240000000972 Agathis dammara Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 235000001258 Cinchona calisaya Nutrition 0.000 description 1
- 229920002871 Dammar gum Polymers 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- 241000548599 Omma Species 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- XIEPJMXMMWZAAV-UHFFFAOYSA-N cadmium nitrate Inorganic materials [Cd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XIEPJMXMMWZAAV-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- KMPWYEUPVWOPIM-UHFFFAOYSA-N cinchonidine Natural products C1=CC=C2C(C(C3N4CCC(C(C4)C=C)C3)O)=CC=NC2=C1 KMPWYEUPVWOPIM-UHFFFAOYSA-N 0.000 description 1
- KMPWYEUPVWOPIM-LSOMNZGLSA-N cinchonine Chemical compound C1=CC=C2C([C@@H]([C@H]3N4CC[C@H]([C@H](C4)C=C)C3)O)=CC=NC2=C1 KMPWYEUPVWOPIM-LSOMNZGLSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- QELUYTUMUWHWMC-UHFFFAOYSA-N edaravone Chemical compound O=C1CC(C)=NN1C1=CC=CC=C1 QELUYTUMUWHWMC-UHFFFAOYSA-N 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000013521 mastic Substances 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NMHMNPHRMNGLLB-UHFFFAOYSA-N phloretic acid Chemical compound OC(=O)CCC1=CC=C(O)C=C1 NMHMNPHRMNGLLB-UHFFFAOYSA-N 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 150000007519 polyprotic acids Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229960000948 quinine Drugs 0.000 description 1
- -1 silver halide Chemical class 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/388—Processes for the incorporation in the emulsion of substances liberating photographically active agents or colour-coupling substances; Solvents therefor
Definitions
- This invention relates to improvements in color photography and more particularly to the manufacture of photographic elements containing color formers, also referred to as coupling components. 7
- the dye which is thus formed by coupling is deposited in the gelatin or other silver halide carrier adjacent to the metallic silver grain. It is desirable that the dyes formed should not readily wander from the place of formation and it is accordingly desirable that they should be insoluble in water. They are probably .not physically attached to the silver grain. At all; events the silver may be subsequently bleached out of the carrier layer leaving a pure dye image.
- color couplers can with advantage be incorporated in photographic silver salt emulsions by precipitation in the presence of salts or salt-rormmg water-insoluble binders such as natural or artificial gums or resins.
- water-soluble salts such as those of alkali metals, ammomum, etnanolamine, or of other strong organic bases or water-insoluble salts of alkaline earth metals or of other metals whose presence ihphotographic emulsions is not deleterious, or or organic bases of com-, plex structure or high molecular weight such as quinine or cinchonine.
- a photographic silver salt emulsion containing a salt of a saltforming water-insoluble binder such asa natural or artificial gum or resin, and a color coupler.
- a solution of such insoluble salt containing color coupler inan organic solvent for both.
- the emulsion may, however, contain the cation of the insoluble salt in which case the solution of coupler in organic solvent may contain the gum .or resin itself or preferably a watersoluble salt thereof.
- Suitable organic solvents are methanol, ethanol or acetone.
- omma components is or advantage in that their to; j
- the present invention ma be used in making the elements described in Martinez U. 5.
- Patent No. 2,269,158, granted January 6, 1942, and the methods described or claimed therein may be employed with salts of salt-forming water-soluble or water-insoluble binders such as gums or resins.
- Metals which may be used to form salts for the present invention are magnesium, calcium, strontium, barium, aluminum, cadmium, manganese, zinc, cerium, nickel, cobalt and thorium. This list is illustrative only.
- Resins which will form water-soluble or water-insoluble saltssuitable for use in the present invention are whole lac, hard lac, soft lac, hydrolysed lac (see for example Ayres, Batley and Knott U. S. Patent 2,199,978, granted May 7, 1940), colophony, dammar, mastic, sandarach and glycerol phthalic anhydride.
- cellulose esters of polybasic acids having free carboxylic groups e. g. cellulose phthalate or cellulose acetate-phthaiate (see for example Malm U. S. Patent 1,884,035,
- Patent 2,161,788, granted June 13, 1939 The following examples illustrate the manufacture of silver salt emulsions according to the invention.
- water-soluble salts of resins are used.
- water-insoluble salts of the resins are precipitated in the emulsion.
- Example 1 but using the sodium salt of soft lac instead of the sodium salt of colophony.
- Example 3 To 250 cc. of emulsion containing the equivalent of 15 grams silver nitrate is added 5 cc. of a per cent aqueous solution of cadmium nitrate. After thorough mixing 30 cc. .of an alcoholic solution containing 1 per cent 1-phenyl-3-methyl-5- pyrazolone and 10 per cent sodium salt of colophony are slowly added with agitation.
- Example 4 As Example 3 but using instead of the cadmium filtrate 5 cc. of a 10 per cent nickel chloride soluon. x s
- Some metallic salts of resins employed in the present invention can be dissolved in organic solvents such as alcohol, for example the cadmium and magnesium salts of colophony and soft lac.
- This invention is particularly useful with color couplers of limited solubility as defined in Vittum and Weissberger U. S. application Serial No. 314,679, filed January 19, 1940.
- Iclaim 1. The method of preventing the diffusion in photographic gelatino-silver halide layers, of color couplers which couple with the oxidation product of primary aromatic amino color developers, which comprises mixing the color coupler with the gelatin and an appreciable amount of a waterinsoluble salt of a resin.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Description
Patented Dec. 5, 1944 COLOR PHOTOGRAPH) MATERIALS Edward B. Knott, Wealdstone, Harrow, England,
assignor to Eastman Kodak Company, Rochester, N. ll., a corporation of New Jersey No Drawing. Application July .3, 1941, Serial No. 400,925. In Great Britain July 23, 1940 5 Claims. (01. 95-7) This invention relates to improvements in color photography and more particularly to the manufacture of photographic elements containing color formers, also referred to as coupling components. 7
It is well known to produce images by developing a silver salt image in presence of a coupling component, by which I mean a compound which,
during the production of'the silver image by the photographic development, couples with the oxidation products of the developing agent where they are formed. If such coupling components are added to the developer solution, or incorporated in the emulsion layer, the dye which is thus formed by coupling is deposited in the gelatin or other silver halide carrier adjacent to the metallic silver grain. It is desirable that the dyes formed should not readily wander from the place of formation and it is accordingly desirable that they should be insoluble in water. They are probably .not physically attached to the silver grain. At all; events the silver may be subsequently bleached out of the carrier layer leaving a pure dye image. v
' duce coupling components which will not wander 3 When the coupling components are incorporated in th emulsion it is important that they should not wander or diffuse to any substantial extent during processing. If an emulsion containing a coupling component is adjacent to or near to another emulsion not containing a coupling component 'or containing a diflereht couinsoluble water-permeable binder .(such as a pling component it is equally important that diffusion or wandering of the coupling component or any of them should not take place at any time prior to the processing, e. 3. during coating.
' Numerous proposals have been made to proor difiuse from the emulsions in which they are incorporated. In some of these proposals attempts were made so .to alter the coupling components that they would have an aflinity for gelatin. In others, groups of high molecularweight were introduced into the coupling components. Although it has been proposed to cause coupling components to be absorbed on to thesilver halide grains with the object of avoiding diffusion, most of the methods proposed have involved chemical synthesis of a more complex coupling component from a simplercoupling component. When this is done there is usually an undesirable tendency for the absorption range to v become wider and the absorption curve to become 2,306,410, that it is not necessary for the coupling component to be soluble. It is possible for conponentisihsoluble therein, and accordingly. it can be insoluble in water. The use of insoluble 'pling development to take placewith alkaline ,e llllin development even it "the coupling comshow little or no tendency to wander from the emulsion layer or the emulsion grain in which they are incorporated but their insolubility in water frequently makes it diflicult for them to be dispersed in adequate amounts and to an adequately fine degree in th emulsion. If they are not adequately dispersed then the dye which is formed tends to be produced in localized spots resulting in a granular appearance which impairs the photographic reproduction. X
When coupling components are incorporated in photographic s1lver salt emulsions it is necessary that; they should be present in fine dispersion but adequate concentration in order that satlsiactory color density and good brilliance of color be produced on coupling deveiopme t. In Martinez U. S. Patent 2,269,158, there is described a color photographic element having a plurahty of differentlally color-sensitive photographic emulsions on a support, at least one of'which 6911111810115 con's'lsts o1 silver-halide emulsified in a watersoluble binder such a gelatin having distributed through it fine, discrete particles of a waterresm) containing color coupler.
I'have now round, and l-tms forms the subject of the present invention, that color couplers can with advantage be incorporated in photographic silver salt emulsions by precipitation in the presence of salts or salt-rormmg water-insoluble binders such as natural or artificial gums or resins. I may use water-soluble salts such as those of alkali metals, ammomum, etnanolamine, or of other strong organic bases or water-insoluble salts of alkaline earth metals or of other metals whose presence ihphotographic emulsions is not deleterious, or or organic bases of com-, plex structure or high molecular weight such as quinine or cinchonine.
According to one feature-of the present invention, therefore, there is provided a photographic silver salt emulsion containing a salt of a saltforming water-insoluble binder such asa natural or artificial gum or resin, and a color coupler.
According to a further featureof the invention from a solution of such insoluble salt containing color coupler inan organic solvent for both. The emulsionmay, however, contain the cation of the insoluble salt in which case the solution of coupler in organic solvent may contain the gum .or resin itself or preferably a watersoluble salt thereof. Suitable organic solvents are methanol, ethanol or acetone.
omma components is or advantage in that their to; j The present invention ma be used in making the elements described in Martinez U. 5. Patent No. 2,269,158, granted January 6, 1942, and the methods described or claimed therein may be employed with salts of salt-forming water-soluble or water-insoluble binders such as gums or resins.
Many natural or artificial gums or resins contain acid radicals or salt-forming hydroxyl groups. Metals which may be used to form salts for the present invention, are magnesium, calcium, strontium, barium, aluminum, cadmium, manganese, zinc, cerium, nickel, cobalt and thorium. This list is illustrative only. Resins which will form water-soluble or water-insoluble saltssuitable for use in the present invention are whole lac, hard lac, soft lac, hydrolysed lac (see for example Ayres, Batley and Knott U. S. Patent 2,199,978, granted May 7, 1940), colophony, dammar, mastic, sandarach and glycerol phthalic anhydride. This list is also illustrative only. Instead of resins we may use, as the salt-forming watereinsoluble binder, cellulose esters of polybasic acids having free carboxylic groups e. g. cellulose phthalate or cellulose acetate-phthaiate (see for example Malm U. S. Patent 1,884,035,
granted October 25, 1932). Artificial resins which form salts are well known (see for example U. S.
Patent 2,161,788, granted June 13, 1939) The following examples illustrate the manufacture of silver salt emulsions according to the invention. In Examples 1 and 2 water-soluble salts of resins are used. In Examples 3 and 4 water-insoluble salts of the resins are precipitated in the emulsion.
Example 1 Example 2,
As Example 1 but using the sodium salt of soft lac instead of the sodium salt of colophony.
Example 3 To 250 cc. of emulsion containing the equivalent of 15 grams silver nitrate is added 5 cc. of a per cent aqueous solution of cadmium nitrate. After thorough mixing 30 cc. .of an alcoholic solution containing 1 per cent 1-phenyl-3-methyl-5- pyrazolone and 10 per cent sodium salt of colophony are slowly added with agitation.
Example 4 As Example 3 but using instead of the cadmium filtrate 5 cc. of a 10 per cent nickel chloride soluon. x s
In the case that water-insoluble salts of the resins are used, as in Examples 3.and 4, treatment of the film with ammonia after color development will render the resin soluble, so that it may be removed.
The employment of salts of gums or resins according to the invention possesses many advantages:
,(a) If the refractive index of a resin and of the water-soluble water-permeable binder into which such resin is to be incorporated are materially different. a bloom or matte surface may be produced. This can often be remedied by employing a metallic salt, according to the present invention, which has a refractive index closer to that of the binder. I
(b) The employment of salts of gums or resins is particularly useful in cases where the color more emulsions are present on the same side of a single support and have to be differentially processed to color.
Some metallic salts of resins employed in the present invention can be dissolved in organic solvents such as alcohol, for example the cadmium and magnesium salts of colophony and soft lac.
This enables them to be added in such solution to the emulsions using the same procedure as for resins themselves.
This invention is particularly useful with color couplers of limited solubility as defined in Vittum and Weissberger U. S. application Serial No. 314,679, filed January 19, 1940.
Numerous variations may be made in my invention within the scope of the appended claims.
Iclaim: 1. The method of preventing the diffusion in photographic gelatino-silver halide layers, of color couplers which couple with the oxidation product of primary aromatic amino color developers, which comprises mixing the color coupler with the gelatin and an appreciable amount of a waterinsoluble salt of a resin.
2. The method of preventing the diffusion in photographic gelatino-silver halide layers, of color couplers which couple with the oxidation product of primary aromatic amino color developers, which comprises mixing the color coupler with the gelatin and an appreciable amount of a waterinsoluble salt-of a natural resin.
3. The method of preventing the diflusion in photographic gelatino-silver halide layers, of color couplers which couple with the oxidation product of primary aromatic amino color developers, which comprises mixing the color coupler with the gelatin and an appreciable amount of awaterinsoluble salt of a synthetic resin. i
4. The method of preventing the diffusion in photographic gelatino-silver halide emulsion layers, of color couplers which couple with the oxidation product of primary aromatic amino color developers, which comprises mixing the color
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12064/40A GB544135A (en) | 1940-07-23 | 1940-07-23 | Improvements in colour photographic materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2364374A true US2364374A (en) | 1944-12-05 |
Family
ID=9997764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US400925A Expired - Lifetime US2364374A (en) | 1940-07-23 | 1941-07-03 | Color photographic materials |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2364374A (en) |
| FR (1) | FR950275A (en) |
| GB (1) | GB544135A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2704710A (en) * | 1950-04-18 | 1955-03-22 | Gen Aniline & Film Corp | Precipitation of azo dyes in silver halide emulsions by means of guanidine and biguanide compounds containing long alkyl chains |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2565418A (en) * | 1947-08-13 | 1951-08-21 | Eastman Kodak Co | Method of preparing photographic silver halide emulsions |
-
1940
- 1940-07-23 GB GB12064/40A patent/GB544135A/en not_active Expired
-
1941
- 1941-07-03 US US400925A patent/US2364374A/en not_active Expired - Lifetime
-
1946
- 1946-08-28 FR FR950275D patent/FR950275A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2704710A (en) * | 1950-04-18 | 1955-03-22 | Gen Aniline & Film Corp | Precipitation of azo dyes in silver halide emulsions by means of guanidine and biguanide compounds containing long alkyl chains |
Also Published As
| Publication number | Publication date |
|---|---|
| GB544135A (en) | 1942-03-30 |
| FR950275A (en) | 1949-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2279406A (en) | Color process using cellulose ester emulsions | |
| US2397452A (en) | Photographic element | |
| US2353754A (en) | Color photography using metallic salt coupler compounds | |
| US2284877A (en) | Light sensitive color element | |
| US4950586A (en) | Solid particle dispersions of filter dyes for photographic elements | |
| US2527583A (en) | Merocyanine filter and backing dyes | |
| DE2409689A1 (en) | PHOTOGRAPHIC SENSITIVE MATERIALS | |
| GB503814A (en) | Improvements in three-colour photographic materials | |
| JPS59140444A (en) | Silver halide photographic emulsion | |
| GB524154A (en) | Improvements in colour photographic materials | |
| US2304953A (en) | Photographic developer | |
| US2364374A (en) | Color photographic materials | |
| US2397864A (en) | Color yielding photographic elements | |
| US2478400A (en) | Silver halide photographic emulsion with developer and color coupler dispersed therein | |
| DE3408329A1 (en) | PHOTOGRAPHIC LIGHT-SENSITIVE SILVER HALOGENIDE MATERIAL | |
| JPS61189530A (en) | Photographic recording material with stabilized photosensitivity | |
| US3837863A (en) | Process for preparing light-sensitive silver halide photographic materials | |
| JPH0820707B2 (en) | Silver halide color photographic light-sensitive material | |
| US2538257A (en) | M-(3-methylsalicylamido)-benzaldehyde polyvinyl acetals as photographic color couplers | |
| US2369469A (en) | Photographic materials | |
| US2418624A (en) | Azo dyes for color photography | |
| US2295009A (en) | Photographic color forming compound | |
| US2289803A (en) | Photographic element and method of producing the same | |
| US3756830A (en) | Fluorinated alcohols as solvents for spectral sensitizing dyes | |
| US2292306A (en) | Method of color-forming development |