US2265138A - Desensitizing of light sensitive silver halide emulsions - Google Patents
Desensitizing of light sensitive silver halide emulsions Download PDFInfo
- Publication number
- US2265138A US2265138A US308825A US30882539A US2265138A US 2265138 A US2265138 A US 2265138A US 308825 A US308825 A US 308825A US 30882539 A US30882539 A US 30882539A US 2265138 A US2265138 A US 2265138A
- Authority
- US
- United States
- Prior art keywords
- anthraquinone
- silver halide
- halide emulsions
- desensitizing
- light sensitive
- 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
- 239000000839 emulsion Substances 0.000 title description 20
- -1 silver halide Chemical class 0.000 title description 18
- 229910052709 silver Inorganic materials 0.000 title description 17
- 239000004332 silver Substances 0.000 title description 17
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 25
- 150000004056 anthraquinones Chemical class 0.000 description 20
- 150000003852 triazoles Chemical class 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 11
- 230000005494 condensation Effects 0.000 description 11
- 238000009833 condensation Methods 0.000 description 11
- 125000002837 carbocyclic group Chemical group 0.000 description 10
- YCANAXVBJKNANM-UHFFFAOYSA-N 1-nitroanthracene-9,10-dione Chemical class O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2[N+](=O)[O-] YCANAXVBJKNANM-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- POPBYCBXVLHSKO-UHFFFAOYSA-N 9,10-dioxoanthracene-1-carboxylic acid Chemical class O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2C(=O)O POPBYCBXVLHSKO-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 229940090898 Desensitizer Drugs 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000000586 desensitisation Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- AZQWKYJCGOJGHM-UHFFFAOYSA-N para-benzoquinone Natural products O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
- C09B5/2409—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position not provided for in one of the sub groups C09B5/26 - C09B5/62
- C09B5/2436—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position not provided for in one of the sub groups C09B5/26 - C09B5/62 only nitrogen-containing hetero rings
-
- 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
- G03C5/32—Latensification; Densensitisation
Definitions
- This invention relates to the desensitization of silver halide emulsions. It is a known fact to use anthraquinone derivatives for the desensitizing of photographic emulsions. Especially effective are taurides of the anthraquinonesulfo or carboxylic acids, especially anthraquinone acid amides, at least one hydrogen atom of the amide group being substituted by a radical, containing sulfo or carboxyl groups.
- especlally ethers and thioethers of anthraquinone with aliphatic or aromatic radicals show excellent desensitizing qualities.
- anthraquinones obtained by carbocyclic condensation with a triazole, as for instance anthraquinonetriazole, an- ,thraquinonetriazolesulto acid, anthraquinonetriazolecarboxylic acid, nitroanthraquinonetriazole etc., the two carbon atoms of the triazole nucleus condensed onto the anthraquinone nu- In Germany December 12,
- a process for desensitizing light sensitive silver halide emulsions which comprises treating vsaid silver halide emulsions with a compound cleus being formed by two carbon atoms of one a of the benzene rings of the anthraquinone nucleus.
- the sulfo acids of these new compounds of the typical formula be added to in preliminary the developer or may be used
- Example 1 0.5 g; of 1,2-triazoleanthraquinone-3-sulfo acid 0.3 g. of 2,3-triazoleanthraquinone are dissolved in one liter developer.
- a process for desensitizing light sensitive silver halide emulsions which comprises immersing said silver halide emulsions before development in an aqueous preliminary bath containing a compound formed by condensation of a triazole nucleus onto a carbocyclic ring of an anthraquinone nucleus.
- a process for desensitizing light sensitive silver halide emulsions which comprises immersing said silver halide emulsions before development in an aqueous preliminary bath containing a compound formed by condensation of a triazole nucleus onto a carbocyclic ring 0! an anthraquinone nucleus selected from the group consisting of anthraquinone, anthraquinone sulfo acids, anthraquinone carboxylic acids and nitroanthraquinones.
- a process for desensitizing light sensitive silver halide emulsions which comprises developing said silver halide emulsions in an aqueous solution of a developing agent and a compound formed by condensation of a triazole nucleus onto a carbocyclic ring of an anthraquinone nucleus.
- a process for desensitizing light sensitive silver halide emulsions which comprises developing said silver halide emulsions in an aqueous solution of a developing agent and a compound formed by condensation of a triazole nucleus onto a carbocyclic ring of an anthraquinone nucleus selected fromv the group consisting of anthraquinone, anthraquinone sulfo acids, anthraquinone carboxylic acids and nitroanthraquinones.
- a desensitizer for light sensitive silver halide emulsion a compound formed by condensation of a triazole nucleus onto acarbocylic ring of an anthraquinone nucleus.
- a bath for desensitizing lightsensitive silver quinone carboxylic acids, and nitroanthraquinones 9.
- a developer for developing light sensitive silver halide emulsion layers comprising an aqueous solution of a developing agent and a compound formed by .conden'sati'onof a triazole nucleus onto 'a carbocyclic ring of an anthraquinone nucleus.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0063146 | 1938-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2265138A true US2265138A (en) | 1941-12-09 |
Family
ID=7195844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US308825A Expired - Lifetime US2265138A (en) | 1938-12-12 | 1939-12-12 | Desensitizing of light sensitive silver halide emulsions |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2265138A (enrdf_load_stackoverflow) |
| BE (1) | BE437187A (enrdf_load_stackoverflow) |
| CH (1) | CH217786A (enrdf_load_stackoverflow) |
| FR (1) | FR877991A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6077653A (en) * | 1998-07-29 | 2000-06-20 | Eastman Kodak Company | Photographic developing compositions and methods of using 1,4-cyclohexanediones as antioxidants |
-
0
- BE BE437187D patent/BE437187A/xx unknown
-
1939
- 1939-11-22 CH CH217786D patent/CH217786A/de unknown
- 1939-12-12 US US308825A patent/US2265138A/en not_active Expired - Lifetime
-
1941
- 1941-12-23 FR FR877991D patent/FR877991A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6077653A (en) * | 1998-07-29 | 2000-06-20 | Eastman Kodak Company | Photographic developing compositions and methods of using 1,4-cyclohexanediones as antioxidants |
Also Published As
| Publication number | Publication date |
|---|---|
| FR877991A (fr) | 1943-01-07 |
| BE437187A (enrdf_load_stackoverflow) | |
| CH217786A (de) | 1941-11-15 |
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