US3003876A - Photographic process - Google Patents
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- US3003876A US3003876A US680620A US68062057A US3003876A US 3003876 A US3003876 A US 3003876A US 680620 A US680620 A US 680620A US 68062057 A US68062057 A US 68062057A US 3003876 A US3003876 A US 3003876A
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- 238000000034 method Methods 0.000 title claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 18
- -1 SILVER HALIDE Chemical class 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 5
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 150000002576 ketones Chemical class 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 150000002923 oximes Chemical class 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 125000000468 ketone group Chemical group 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- AFUKNJHPZAVHGQ-UHFFFAOYSA-N 2,5-dimethoxy-Benzaldehyde Chemical compound COC1=CC=C(OC)C(C=O)=C1 AFUKNJHPZAVHGQ-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 239000007868 Raney catalyst Substances 0.000 description 2
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 2
- 229910000564 Raney nickel Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- WJUFSDZVCOTFON-UHFFFAOYSA-N veratraldehyde Chemical compound COC1=CC=C(C=O)C=C1OC WJUFSDZVCOTFON-UHFFFAOYSA-N 0.000 description 2
- NHOWREQLQRFDRW-UHFFFAOYSA-N (methoxyamino)oxymethane Chemical compound CONOC NHOWREQLQRFDRW-UHFFFAOYSA-N 0.000 description 1
- SXCNUJCWUYAUNK-UHFFFAOYSA-N 1,5-bis(2,5-dimethoxyphenyl)penta-1,4-dien-3-one Chemical compound COC1=CC=C(OC)C(C=CC(=O)C=CC=2C(=CC=C(OC)C=2)OC)=C1 SXCNUJCWUYAUNK-UHFFFAOYSA-N 0.000 description 1
- SWYNRRDLPMVWSK-UHFFFAOYSA-N 1,5-bis(2,5-dimethoxyphenyl)pentan-3-one Chemical compound COC1=CC=C(OC)C(CCC(=O)CCC=2C(=CC=C(OC)C=2)OC)=C1 SWYNRRDLPMVWSK-UHFFFAOYSA-N 0.000 description 1
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910052736 halogen Chemical group 0.000 description 1
- 150000002367 halogens Chemical group 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229940032007 methylethyl ketone Drugs 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- QCCDLTOVEPVEJK-UHFFFAOYSA-N phenylacetone Chemical compound CC(=O)CC1=CC=CC=C1 QCCDLTOVEPVEJK-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
- C10L1/223—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond having at least one amino group bound to an aromatic carbon atom
- C10L1/2235—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond having at least one amino group bound to an aromatic carbon atom hydroxy containing
-
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
- G03C5/3021—Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring
-
- 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
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/02—Photosensitive materials characterised by the image-forming section
- G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
- G03C8/06—Silver salt diffusion transfer
Definitions
- This invention relates to chemistry and more particularly to novel chemical compounds and novel photographic processes utilizing said compounds as developing agents.
- One object of this invention is to provide novel chemical compounds and suitable syntheses for their prepara tion.
- Another object of this invention is to provide novel chemical compounds useful as photographic developing agents and intermediates, and methods of developing exposed photosensitive elements using said compounds.
- the invention accordingly comprises the several steps andlthe relation and order of one or more of such steps with respect to each of the others, and the product possessing the features, properties and the relation of elements which are exemplified in the following detailed disclosure, and the scope of the application of which will be indicated in the claims.
- novel compounds of this invention may be represented by the formula:
- each R when taken alone may be hydrogen, an alkyl and preferably a lower alkyl containing no more than 5 carbon atoms or an aryl group; the R s when taken together may be an ethylene or propylene group and as such complete a 5 or 6 carbon cycloaliphatic ring; and each Y is an unsubstituted, alkyl-substituted, or halogen-substituted, ortho or para dihydroxyphenyl group; and the acid addition salts thereof.
- suitable acid addition salts mention may be made of the hydrohalides, e.g., hydrochloride or hydrobromide, and of organic acid salts, such as the oxalates.
- Y is a p-dihydroxyphenyl radical and such compounds may be represented by the formula:
- the preferred compound of this invention is 1,5-bis-(2', -dihydroxyphenyl) -3-pentylamine of the structure:
- novel compounds of this invention may be prepared by condensing a suitable dialkoxybenzaldehydewith a ketone of the structure R1CH2CCH2-R1 I; wherein R has thesame meaning as above, hydrogenating the resulting unsaturated product, condensing the ketone with hydroxylamine to produce the oxime, converting the oxime to an amine by hydrogenation, and removing the alkoxy groups by hydrolysis.
- the ketone condensation product may be converted directly to the amine by reductively aminating the keto group with ammonia and hydrogen.
- ketones used in preparing the novel compounds of' this invention should contain methyl or methylene radicals on both sides of the keto group and adjacent to the keto group, in order that the aldehyde condensation may proceed.
- ketones useful in preparing the novel compounds of this invention mention may be made of acetone, methyl-ethyl ketone, diethyl ketone, phenyl acetone, cyclopentanone and cyclohexanone.
- dialkoxybenzaldehydes examples include 2,5-dimethoxybenzaldehyde and 3,4- dimethoxybenzaldehyde and their alkyl and halogen substituted derivatives.
- Example 1 Acetone (6.8 g.) and 2,5-dimethoxybenzaldehyde (39 g.) are added to a vigorously stirred solution of sodium hydroxide (23.5 g.) in a mixture of water (235 cc.) and ethanol (190 cc.). The mixture is stirred at room temperature for about an hour after which a yellow solidified oil'is filtered oif. Extraction with ether yields 1,5-bis- (2,5-dimethoxyphenyl)-penta-1,4-dien-3-one as yellow needles melting at 108 to 108.5 C.
- This product dis-- solved in ethyl acetate, is hydrogenated over Raney nickel, at room temperature and a pressure of 30 p.s.i., to give 1,5-bis-(2',5'-dimethoxyphenyl)-3-pentanone as a white crystalline solid melting at C.
- the oxime of the above ketone is prepared by refluxing the ketone with hydroxylamine in a 50:50 mixture, by volume, of pyridine and ethanol. After refluxing this mixture for two hours, it is evaporated to an oil, which is thoroughly washed with water. The product which crystallizes from this oil is recrystallized from ether to give a White crystalline product melting at to 87 C. Analysis of the oxime gives a nitrogen value of 3.7% as compared with the calculated 3.75%.
- the 1,5-bis-(2',5'-dimethoxyphenyl)-pentanone-3-oxime (40 g.) is hydrogenated in ethanol over Raney nickel at 120 C. and a hydrogen pressure of 1200-1300 psi. for one to one-and-one-half hours.
- the hydrogenation product is filtered, the ethanol evaporated off and the residue taken up in ether.
- Precipitation with hydrochloric acid gives a 90% yield of the 1,5-bis-(2,5'-dimethoxyphenol)- 3-pentylamine hydrochloride as a white solid melting at 101 to 103 C.
- composition it will be understood that it is within the scope of this invention to vary the above composition to suit particular needs.
- the percentage of materials may be varied and additional materials useful in photographic processes may be added. If the composition is to be spread on a silver halide emulsion, a film-forming thickening agent such, for example, as sodium carboxymethyl cellulose, may be added.
- novel compounds of this invention are useful as developing agents in difiusion transfer processes, both dye and silver transfer, and are especially useful in such photographic processes wherein it is desired to eliminate or minimize the need for washing or stabilizing operations in liquid baths subsequent to the formation of the silver print. Examples of such processes are disclosed in US. Patent No. 2,647,056 to Edwin H. Land.
- the utility of the developers of this invention is by no means limited. to difiusion transfer reversal processes for they may be satisfactorily employed in conventional multistage multibath photographic processes in black-and-white or color photography.
- the novel developer composition may have incorporated therein as a further ingredient a silver halide solvent such as sodium thiosulfate.
- a silver halide solvent such as sodium thiosulfate.
- novel compounds of this invention are again useful as intermediates.
- novel compounds of thisinvention are further useful as antioxidants in petroleum products, etc.
- a process for developing a photosensitive silver halide emulsion which comprises treating an exposedsilver halide emulsion with an aqueous alkaline solution of acompound represented by the formula:
Description
United States Patent 3,003,876 PHOTOGRAPHIC PROCESS Elkan R. Blout, Belmont, Saul G. Cohen, Lexington, and
Myron S. Simon, Newton Centre, Mass., assignors to Polaroid Corporation, Cambridge, Mass., a corporation of Delaware No Drawing. Filed Aug. 27, 1957, Ser. No. 680,620
4 Claims. (Cl. 96-66) p This invention relates to chemistry and more particularly to novel chemical compounds and novel photographic processes utilizing said compounds as developing agents.
One object of this invention is to provide novel chemical compounds and suitable syntheses for their prepara tion.
Another object of this invention is to provide novel chemical compounds useful as photographic developing agents and intermediates, and methods of developing exposed photosensitive elements using said compounds.
Other objects of the invention will in part be obvious and will in part appear hereinafter.
The invention accordingly comprises the several steps andlthe relation and order of one or more of such steps with respect to each of the others, and the product possessing the features, properties and the relation of elements which are exemplified in the following detailed disclosure, and the scope of the application of which will be indicated in the claims.
For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description. I
The novel compounds of this invention may be represented by the formula:
wherein each R when taken alone may be hydrogen, an alkyl and preferably a lower alkyl containing no more than 5 carbon atoms or an aryl group; the R s when taken together may be an ethylene or propylene group and as such complete a 5 or 6 carbon cycloaliphatic ring; and each Y is an unsubstituted, alkyl-substituted, or halogen-substituted, ortho or para dihydroxyphenyl group; and the acid addition salts thereof. As examples of suitable acid addition salts, mention may be made of the hydrohalides, e.g., hydrochloride or hydrobromide, and of organic acid salts, such as the oxalates.
In a preferred embodiment, Y is a p-dihydroxyphenyl radical and such compounds may be represented by the formula:
wherein R is the same as above.
The preferred compound of this invention is 1,5-bis-(2', -dihydroxyphenyl) -3-pentylamine of the structure:
The novel compounds of this invention may be prepared by condensing a suitable dialkoxybenzaldehydewith a ketone of the structure R1CH2CCH2-R1 I; wherein R has thesame meaning as above, hydrogenating the resulting unsaturated product, condensing the ketone with hydroxylamine to produce the oxime, converting the oxime to an amine by hydrogenation, and removing the alkoxy groups by hydrolysis. In an alternate method, the ketone condensation product may be converted directly to the amine by reductively aminating the keto group with ammonia and hydrogen.
The ketones used in preparing the novel compounds of' this invention should contain methyl or methylene radicals on both sides of the keto group and adjacent to the keto group, in order that the aldehyde condensation may proceed. As examples of ketones useful in preparing the novel compounds of this invention, mention may be made of acetone, methyl-ethyl ketone, diethyl ketone, phenyl acetone, cyclopentanone and cyclohexanone.
As examples of suitable dialkoxybenzaldehydes, mention may be made of 2,5-dimethoxybenzaldehyde and 3,4- dimethoxybenzaldehyde and their alkyl and halogen substituted derivatives.
The following example illustrates the preparation of l,S-bis-(2',5-dihydroxyphenyl)-3-pentylamine and is given for purposes of illustration only.
Example 1 Acetone (6.8 g.) and 2,5-dimethoxybenzaldehyde (39 g.) are added to a vigorously stirred solution of sodium hydroxide (23.5 g.) in a mixture of water (235 cc.) and ethanol (190 cc.). The mixture is stirred at room temperature for about an hour after which a yellow solidified oil'is filtered oif. Extraction with ether yields 1,5-bis- (2,5-dimethoxyphenyl)-penta-1,4-dien-3-one as yellow needles melting at 108 to 108.5 C. This product, dis-- solved in ethyl acetate, is hydrogenated over Raney nickel, at room temperature and a pressure of 30 p.s.i., to give 1,5-bis-(2',5'-dimethoxyphenyl)-3-pentanone as a white crystalline solid melting at C.
The oxime of the above ketone is prepared by refluxing the ketone with hydroxylamine in a 50:50 mixture, by volume, of pyridine and ethanol. After refluxing this mixture for two hours, it is evaporated to an oil, which is thoroughly washed with water. The product which crystallizes from this oil is recrystallized from ether to give a White crystalline product melting at to 87 C. Analysis of the oxime gives a nitrogen value of 3.7% as compared with the calculated 3.75%.
The 1,5-bis-(2',5'-dimethoxyphenyl)-pentanone-3-oxime (40 g.) is hydrogenated in ethanol over Raney nickel at 120 C. and a hydrogen pressure of 1200-1300 psi. for one to one-and-one-half hours. The hydrogenation product is filtered, the ethanol evaporated off and the residue taken up in ether. Precipitation with hydrochloric acid gives a 90% yield of the 1,5-bis-(2,5'-dimethoxyphenol)- 3-pentylamine hydrochloride as a white solid melting at 101 to 103 C.
The dimethoxy amine hydrochloride is refluxed under nitrogen for five hours in concentrated hydrobromic acid, after which the reflux mixture is evaporated to dryness at C. in vacuo. This product is washed several Patented Oct. 10, 1961 invention are useful as photographic developing agents. As an example of a suitable developing compositionutilizing one of the novel compounds of this invention, mention may be made of the following composition:
Water cc 100 Potassium bromide gram 0.2 Sodium hydroxide grams 3.0 1,S-bis-(2,5'-dihydroxyphenyl)-3-pentylamine gram 1.0
It will be understood that it is within the scope of this invention to vary the above composition to suit particular needs. The percentage of materials may be varied and additional materials useful in photographic processes may be added. If the composition is to be spread on a silver halide emulsion, a film-forming thickening agent such, for example, as sodium carboxymethyl cellulose, may be added.
The novel compounds of this invention are useful as developing agents in difiusion transfer processes, both dye and silver transfer, and are especially useful in such photographic processes wherein it is desired to eliminate or minimize the need for washing or stabilizing operations in liquid baths subsequent to the formation of the silver print. Examples of such processes are disclosed in US. Patent No. 2,647,056 to Edwin H. Land. The utility of the developers of this invention is by no means limited. to difiusion transfer reversal processes for they may be satisfactorily employed in conventional multistage multibath photographic processes in black-and-white or color photography. Where the herein disclosed compounds are employed in diffusion transfer processes of the type disclosed in the aforementioned patent, the novel developer composition may have incorporated therein as a further ingredient a silver halide solvent such as sodium thiosulfate. Thus, by adding sodium thiosulfate to the composition illustrated above and using an image-receiving element in conjunction with the photosensitive element, a silver transfer image may be obtained.
The novel compounds of this invention are again useful as intermediates. As an example of such use, mention may be made of the preparation of the dye developers claimed and disclosed in the copending application of Elkan R. Blout and Myron S. Simon, Serial No. 680,619,,
filed concurrently herewith, wherein the compounds of this invention are used in the syntheses of said dye developers.
The novel compounds of thisinvention are further useful as antioxidants in petroleum products, etc.
Since certain changes may be made in the above product and process without departing from the scope of the invention herein involved, it is intended that, all matter contained in the above description shall be, interpreted as illustrative and not in a limiting sense.
What is claimed is:
1. A process for developing a photosensitive silver halide emulsion which comprises treating an exposedsilver halide emulsion with an aqueous alkaline solution of acompound represented by the formula:
References Cited in the file of this patent UNITED STATES PATENTS 2,301,381 Dickey et a1. Nov. 10, 1942 2,541,889 Runyan Feb. 13, 1951 2,681,934 Hodge June 22, 1954 2,688,625 Bell et a1. Sept. 7, 1954 2,704,713 Bent et a1. Mar. 22, 1955 2,705,245 Norton Mar. 29, 1955 2,757,091 Oretzky July 31, 1956
Claims (1)
1. A PROCESS FOR DEVELOPING A PHOTOSENSITIVE SILVER HALIDE EMULSION WHICH COMPRISES TREATING AN EXPOSED SILVER HALIDE EMULSION WITH AN AQUEOUS ALKALINE SOLUTION OF A COMPOUND REPRESENTED BY THE FORMULA:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US680620A US3003876A (en) | 1957-08-27 | 1957-08-27 | Photographic process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US680620A US3003876A (en) | 1957-08-27 | 1957-08-27 | Photographic process |
Publications (1)
Publication Number | Publication Date |
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US3003876A true US3003876A (en) | 1961-10-10 |
Family
ID=24731821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US680620A Expired - Lifetime US3003876A (en) | 1957-08-27 | 1957-08-27 | Photographic process |
Country Status (1)
Country | Link |
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US (1) | US3003876A (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US2301381A (en) * | 1939-11-25 | 1942-11-10 | Eastman Kodak Co | Amino derivatives |
US2541889A (en) * | 1949-11-16 | 1951-02-13 | Gen Aniline & Film Corp | Alkyl ethers of polyhydroxyaralkylamines as accelerators |
US2681934A (en) * | 1950-01-06 | 1954-06-22 | Commercial Solvents Corp | Substituted diphenylalkylamines |
US2688625A (en) * | 1953-04-29 | 1954-09-07 | Eastman Kodak Co | 2, 2'-alkylidenebis (4-alkoxy-6-vinylphenols), derivatives thereof, and compositionsstabilized therewith |
US2704713A (en) * | 1953-07-27 | 1955-03-22 | Eastman Kodak Co | Nu-alkylhomogentisamide antistain agents for photographic materials |
US2705245A (en) * | 1953-09-09 | 1955-03-29 | Dow Chemical Co | Trialkylamines and their salts |
US2757091A (en) * | 1954-07-22 | 1956-07-31 | Oretzky Isaac | Photographic developer |
-
1957
- 1957-08-27 US US680620A patent/US3003876A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2301381A (en) * | 1939-11-25 | 1942-11-10 | Eastman Kodak Co | Amino derivatives |
US2541889A (en) * | 1949-11-16 | 1951-02-13 | Gen Aniline & Film Corp | Alkyl ethers of polyhydroxyaralkylamines as accelerators |
US2681934A (en) * | 1950-01-06 | 1954-06-22 | Commercial Solvents Corp | Substituted diphenylalkylamines |
US2688625A (en) * | 1953-04-29 | 1954-09-07 | Eastman Kodak Co | 2, 2'-alkylidenebis (4-alkoxy-6-vinylphenols), derivatives thereof, and compositionsstabilized therewith |
US2704713A (en) * | 1953-07-27 | 1955-03-22 | Eastman Kodak Co | Nu-alkylhomogentisamide antistain agents for photographic materials |
US2705245A (en) * | 1953-09-09 | 1955-03-29 | Dow Chemical Co | Trialkylamines and their salts |
US2757091A (en) * | 1954-07-22 | 1956-07-31 | Oretzky Isaac | Photographic developer |
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