GB560082A - Improvements in sensitive photographic emulsions - Google Patents
Improvements in sensitive photographic emulsionsInfo
- Publication number
- GB560082A GB560082A GB5716/42A GB571642A GB560082A GB 560082 A GB560082 A GB 560082A GB 5716/42 A GB5716/42 A GB 5716/42A GB 571642 A GB571642 A GB 571642A GB 560082 A GB560082 A GB 560082A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bromide
- nitrogen atom
- ethyl
- perchlorate
- phenylethyl
- 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
Links
- 239000000839 emulsion Substances 0.000 title abstract 8
- 125000004433 nitrogen atom Chemical group N* 0.000 abstract 16
- 229910052757 nitrogen Inorganic materials 0.000 abstract 14
- 150000003839 salts Chemical group 0.000 abstract 11
- 239000000975 dye Substances 0.000 abstract 7
- 230000001235 sensitizing effect Effects 0.000 abstract 7
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 5
- -1 bromiodide Chemical compound 0.000 abstract 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 abstract 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 abstract 4
- SMUQFGGVLNAIOZ-UHFFFAOYSA-N quinaldine Chemical compound C1=CC=CC2=NC(C)=CC=C21 SMUQFGGVLNAIOZ-UHFFFAOYSA-N 0.000 abstract 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 3
- 125000004122 cyclic group Chemical group 0.000 abstract 3
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 abstract 3
- 229910052709 silver Inorganic materials 0.000 abstract 3
- 239000004332 silver Substances 0.000 abstract 3
- 125000001424 substituent group Chemical group 0.000 abstract 3
- ZTQNUTNKGQGWCM-UHFFFAOYSA-N 2-methoxyquinoline Chemical compound C1=CC=CC2=NC(OC)=CC=C21 ZTQNUTNKGQGWCM-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 abstract 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 abstract 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 125000001931 aliphatic group Chemical group 0.000 abstract 2
- WZJYKHNJTSNBHV-UHFFFAOYSA-N benzo[h]quinoline Chemical compound C1=CN=C2C3=CC=CC=C3C=CC2=C1 WZJYKHNJTSNBHV-UHFFFAOYSA-N 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 125000000623 heterocyclic group Chemical group 0.000 abstract 2
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 abstract 2
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 abstract 2
- 150000003222 pyridines Chemical class 0.000 abstract 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 abstract 1
- FXTNISMLTZKFMS-UHFFFAOYSA-M 1,4-diethylpyridin-1-ium;bromide Chemical compound [Br-].CCC1=CC=[N+](CC)C=C1 FXTNISMLTZKFMS-UHFFFAOYSA-M 0.000 abstract 1
- PEIKATQMWHFDAU-UHFFFAOYSA-M 1-(3-phenylprop-2-enyl)pyridin-1-ium;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.C=1C=CC=C[N+]=1CC=CC1=CC=CC=C1 PEIKATQMWHFDAU-UHFFFAOYSA-M 0.000 abstract 1
- UAPACKGUWRYQOD-UHFFFAOYSA-M 1-[(2-chlorophenyl)methyl]pyridin-1-ium;bromide Chemical compound [Br-].ClC1=CC=CC=C1C[N+]1=CC=CC=C1 UAPACKGUWRYQOD-UHFFFAOYSA-M 0.000 abstract 1
- VCLNWJQLAGPHET-UHFFFAOYSA-M 1-[(4-chlorophenyl)methyl]pyridin-1-ium perchlorate Chemical compound Cl(=O)(=O)(=O)[O-].ClC1=CC=C(C[N+]2=CC=CC=C2)C=C1 VCLNWJQLAGPHET-UHFFFAOYSA-M 0.000 abstract 1
- ZBEBFUGIJGAPFR-UHFFFAOYSA-M 1-benzyl-2-methylquinolin-1-ium perchlorate Chemical compound Cl(=O)(=O)(=O)[O-].C(C1=CC=CC=C1)[N+]1=C(C)C=CC2=CC=CC=C12 ZBEBFUGIJGAPFR-UHFFFAOYSA-M 0.000 abstract 1
- QURBLZNPSAWMIE-UHFFFAOYSA-M 1-benzyl-2-methylquinolin-1-ium;bromide Chemical compound [Br-].CC1=CC=C2C=CC=CC2=[N+]1CC1=CC=CC=C1 QURBLZNPSAWMIE-UHFFFAOYSA-M 0.000 abstract 1
- GLWHCXRACKOPRO-UHFFFAOYSA-M 1-benzylpyridin-1-ium;bromide Chemical compound [Br-].C=1C=CC=C[N+]=1CC1=CC=CC=C1 GLWHCXRACKOPRO-UHFFFAOYSA-M 0.000 abstract 1
- WOMOKTIBZHLCLG-UHFFFAOYSA-M 1-ethyl-2-methylquinolin-1-ium bromide Chemical compound [Br-].C(C)[N+]1=C(C)C=CC2=CC=CC=C12 WOMOKTIBZHLCLG-UHFFFAOYSA-M 0.000 abstract 1
- KDAYPDWBPIWATK-UHFFFAOYSA-M 1-ethyl-4-phenylsulfanylpyridin-1-ium;iodide Chemical compound [I-].C1=C[N+](CC)=CC=C1SC1=CC=CC=C1 KDAYPDWBPIWATK-UHFFFAOYSA-M 0.000 abstract 1
- ZYFDATPOWYVUDO-UHFFFAOYSA-M 1-ethyl-6-methoxyquinolin-1-ium bromide Chemical compound [Br-].C(C)[N+]1=CC=CC2=CC(=CC=C12)OC ZYFDATPOWYVUDO-UHFFFAOYSA-M 0.000 abstract 1
- CEJHILYOMHWERU-UHFFFAOYSA-M 1-ethyl-6-methylquinolin-1-ium;iodide Chemical compound [I-].CC1=CC=C2[N+](CC)=CC=CC2=C1 CEJHILYOMHWERU-UHFFFAOYSA-M 0.000 abstract 1
- LPLLMVNPCWFGRW-UHFFFAOYSA-M 1-phenylpyridin-1-ium;bromide Chemical compound [Br-].C1=CC=CC=C1[N+]1=CC=CC=C1 LPLLMVNPCWFGRW-UHFFFAOYSA-M 0.000 abstract 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 abstract 1
- YBGFLWPMOWAKBI-UHFFFAOYSA-M 2-(4-methylquinolin-1-ium-1-yl)-1-phenylethanone;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.C12=CC=CC=C2C(C)=CC=[N+]1CC(=O)C1=CC=CC=C1 YBGFLWPMOWAKBI-UHFFFAOYSA-M 0.000 abstract 1
- WMPPDTMATNBGJN-UHFFFAOYSA-N 2-phenylethylbromide Chemical compound BrCCC1=CC=CC=C1 WMPPDTMATNBGJN-UHFFFAOYSA-N 0.000 abstract 1
- ALIYCJCFQPBSIR-UHFFFAOYSA-M 4-methylbenzenesulfonate 4-methylsulfanyl-1-phenylpyridin-1-ium Chemical compound C1(=CC=C(C=C1)S(=O)(=O)[O-])C.CSC1=CC=[N+](C=C1)C1=CC=CC=C1 ALIYCJCFQPBSIR-UHFFFAOYSA-M 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 abstract 1
- OTBGYEMEWAHAFW-UHFFFAOYSA-N Cl[Br]I Chemical compound Cl[Br]I OTBGYEMEWAHAFW-UHFFFAOYSA-N 0.000 abstract 1
- 239000001828 Gelatine Substances 0.000 abstract 1
- 239000000020 Nitrocellulose Substances 0.000 abstract 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 abstract 1
- QMMASHVKLQHKKH-UHFFFAOYSA-M [Br-].ClC1=CC=C(C=C1)[N+]1=CC=CC=C1 Chemical compound [Br-].ClC1=CC=C(C=C1)[N+]1=CC=CC=C1 QMMASHVKLQHKKH-UHFFFAOYSA-M 0.000 abstract 1
- RYKRFIYPDLGHQX-UHFFFAOYSA-M [I-].C(C)[N+]1=C(C=CC2=CC=CC=C12)C1NCCCC1 Chemical compound [I-].C(C)[N+]1=C(C=CC2=CC=CC=C12)C1NCCCC1 RYKRFIYPDLGHQX-UHFFFAOYSA-M 0.000 abstract 1
- 239000011354 acetal resin Substances 0.000 abstract 1
- 125000003545 alkoxy group Chemical group 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000003710 aryl alkyl group Chemical group 0.000 abstract 1
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- CODNYICXDISAEA-UHFFFAOYSA-N bromine monochloride Chemical compound BrCl CODNYICXDISAEA-UHFFFAOYSA-N 0.000 abstract 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
- 125000004181 carboxyalkyl group Chemical group 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 229920002301 cellulose acetate Polymers 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 235000019441 ethanol Nutrition 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052736 halogen Inorganic materials 0.000 abstract 1
- 150000002367 halogens Chemical class 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 1
- 125000003453 indazolyl group Chemical class N1N=C(C2=C1C=CC=C2)* 0.000 abstract 1
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical compound [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 229920001220 nitrocellulos Polymers 0.000 abstract 1
- IQZPDFORWZTSKT-UHFFFAOYSA-N nitrosulphonic acid Chemical compound OS(=O)(=O)[N+]([O-])=O IQZPDFORWZTSKT-UHFFFAOYSA-N 0.000 abstract 1
- 239000000123 paper Substances 0.000 abstract 1
- 229920006324 polyoxymethylene Polymers 0.000 abstract 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 abstract 1
- 125000004001 thioalkyl group Chemical group 0.000 abstract 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-M toluene-4-sulfonate Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-M 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/08—Sensitivity-increasing substances
- G03C1/10—Organic substances
-
- 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/08—Sensitivity-increasing substances
- G03C1/10—Organic substances
- G03C1/12—Methine and polymethine dyes
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US429282A US2334864A (en) | 1942-02-02 | 1942-02-02 | Photographic emulsion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB560082A true GB560082A (en) | 1944-03-20 |
Family
ID=9801290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5716/42A Expired GB560082A (en) | 1942-02-02 | 1942-04-28 | Improvements in sensitive photographic emulsions |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2334864A (enrdf_load_stackoverflow) |
| BE (1) | BE467068A (enrdf_load_stackoverflow) |
| DE (1) | DE857308C (enrdf_load_stackoverflow) |
| FR (1) | FR942831A (enrdf_load_stackoverflow) |
| GB (1) | GB560082A (enrdf_load_stackoverflow) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB615880A (en) * | 1946-08-20 | 1949-01-12 | John David Kendall | Improvements in or relating to silver halide photographic emulsions |
| BE486662A (enrdf_load_stackoverflow) * | 1948-01-13 | |||
| US2784090A (en) * | 1952-11-08 | 1957-03-05 | Eastman Kodak Co | Stabilization of emulsions sensitized with onium compounds |
| US3260597A (en) * | 1960-12-02 | 1966-07-12 | Eastman Kodak Co | Photographic multicolor diffusion transfer process using dye developers and development arrestors |
| US3146102A (en) * | 1960-08-22 | 1964-08-25 | Eastman Kodak Co | Photographic multicolor diffusion transfer process using dye developers |
| CA685877A (en) * | 1961-03-27 | 1964-05-05 | Canadian Kodak Co. Limited | Photographic multicolor diffusion transfer process using dye developers |
| DE1240399B (de) * | 1963-12-17 | 1967-05-11 | Agfa Ag | Nicht spektral sensibilisierte Silberhalogenidemulsion mit nichtsensibilisierenden quaternaeren Cycloammoniumsalzen |
| JPS51120223A (en) * | 1975-04-14 | 1976-10-21 | Konishiroku Photo Ind Co Ltd | Halogenized silver color photosensitive materials |
| JPS59191032A (ja) * | 1983-04-13 | 1984-10-30 | Fuji Photo Film Co Ltd | ハロゲン化銀写真感光材料 |
-
0
- BE BE467068D patent/BE467068A/xx unknown
-
1942
- 1942-02-02 US US429282A patent/US2334864A/en not_active Expired - Lifetime
- 1942-04-28 GB GB5716/42A patent/GB560082A/en not_active Expired
-
1946
- 1946-06-14 FR FR942831D patent/FR942831A/fr not_active Expired
-
1950
- 1950-10-02 DE DEE2753A patent/DE857308C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2334864A (en) | 1943-11-23 |
| FR942831A (fr) | 1949-02-18 |
| BE467068A (enrdf_load_stackoverflow) | |
| DE857308C (de) | 1952-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2166736A (en) | Photographic emulsion | |
| US2393743A (en) | Organic cyanine base | |
| GB557178A (en) | Improvements in and relating to photographic sensitive emulsions | |
| US3137578A (en) | Photographic emulsions containing 2-heterocyclic benzimidazole antifoggants | |
| GB560082A (en) | Improvements in sensitive photographic emulsions | |
| US3706566A (en) | Photographic emulsion containing optically dye-sensitized silver halide grains of less than 0.2 micron | |
| US3482981A (en) | Method of spectrally sensitizing photographic silver halide | |
| US3623882A (en) | Benzimidazole derivatives and their use in photography | |
| GB495197A (en) | Improvements in and relating to the use and production of photographic desensitising compounds | |
| GB625446A (en) | Improvements in photographic emulsions | |
| US3288610A (en) | Optically sensitized photographic silver halide emulsions | |
| US2313922A (en) | Photographic emulsion | |
| GB632808A (en) | Cyanine dyes derived from 1, 3, 4-triazaindolizines and photographic silver halide emulsions sensitized therewith | |
| GB764626A (en) | Improvements in sensitized photographic emulsions | |
| GB551718A (en) | Improvements in or relating to the production and use of dyestuffs | |
| GB698576A (en) | Improvements in or relating to direct positive photographic emulsions | |
| US3832184A (en) | Fogged direct positive silver halide emulsion containing a cyanine dye having a 2-aliphatic,chlorine,or hydrogen-substituted indole nucleus | |
| US3765900A (en) | Spectrally sensitized silver halide emulsions | |
| US3898216A (en) | Styryl and cyanine desensitizing dyes containing a substituted imidazo {8 4,5-b{9 -pyrido{8 2,3-b{9 pyrazine nucleus | |
| US3702767A (en) | Spectrally sensitized light sensitive material | |
| US3764338A (en) | Spectral sensitization of direct positive silver halide emulsions | |
| GB519062A (en) | Improvements in sensitized photographic emulsions | |
| US3615643A (en) | Direct positive silver halide emulsion containing a dye with at least one naptho (2 3 ) oxazole nucleus | |
| US2104855A (en) | Polymethine dyes | |
| GB1000790A (en) | Improvements in or relating to cyanine dyes and to photographic silver halide emulsions containing cyanine dyes |