GB596581A - Improvements relating to photographic emulsions - Google Patents
Improvements relating to photographic emulsionsInfo
- Publication number
- GB596581A GB596581A GB2089044A GB2089044A GB596581A GB 596581 A GB596581 A GB 596581A GB 2089044 A GB2089044 A GB 2089044A GB 2089044 A GB2089044 A GB 2089044A GB 596581 A GB596581 A GB 596581A
- Authority
- GB
- United Kingdom
- Prior art keywords
- group
- alkyl
- heating
- type
- improvements relating
- 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 2
- 125000000217 alkyl group Chemical group 0.000 abstract 3
- 239000000975 dye Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- -1 heterocyclic organic compound Chemical class 0.000 abstract 2
- ZMANZCXQSJIPKH-UHFFFAOYSA-N triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 abstract 2
- ICSNLGPSRYBMBD-UHFFFAOYSA-N 2-Aminopyridine Chemical compound NC1=CC=CC=N1 ICSNLGPSRYBMBD-UHFFFAOYSA-N 0.000 abstract 1
- IOJUPLGTWVMSFF-UHFFFAOYSA-N Benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 abstract 1
- BCMCBBGGLRIHSE-UHFFFAOYSA-N Benzoxazole Chemical compound C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 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
- 210000004940 Nucleus Anatomy 0.000 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 125000004429 atoms Chemical group 0.000 abstract 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 150000003839 salts Chemical group 0.000 abstract 1
- 230000001235 sensitizing Effects 0.000 abstract 1
- 231100000202 sensitizing Toxicity 0.000 abstract 1
- 239000011780 sodium chloride Substances 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
- G03C1/28—Sensitivity-increasing substances together with supersensitising 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
- G03C1/22—Methine and polymethine dyes with an even number of CH groups
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)
- Plural Heterocyclic Compounds (AREA)
Abstract
Merocyanine dyes of the general formula <FORM:0596581/IV/1> are made by quaternarising merocyanines of the type <FORM:0596581/IV/2> by heating the dye with an alkyl salt and then condensing with the quaternary salt so formed, a heterocyclic organic compound containing a keto-methylene group of the type <FORM:0596581/IV/3> in the presence of pyridine or triethylamine with heating, under reflux, if necessary. L is a methine group, R an alkyl and R1, R11 aryl or alkyl groups, Z a non-metallic atom, e.g. a benzthiazole, benzoxazole or b -naphthathiazole nucleus. They are used for sensitizing emulsions (see Group XX). Specifications 450,958, 466,097; 498,290, 498,291 and 515,372, [all in Group XX], are referred to.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE470280D BE470280A (en) | 1944-10-26 | ||
| US460788A US2373659A (en) | 1944-10-26 | 1942-10-05 | Sensitized photographic emulsion |
| FR944283D FR944283A (en) | 1944-10-26 | 1946-09-20 | sensitized photographic emulsion |
| DEE2748A DE873040C (en) | 1944-10-26 | 1950-10-02 | Sensitized silver halide photographic emulsion and method for making the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB596581A true GB596581A (en) | 1948-01-07 |
Family
ID=1735786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2089044A Expired GB596581A (en) | 1944-10-26 | 1944-10-26 | Improvements relating to photographic emulsions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB596581A (en) |
-
1944
- 1944-10-26 GB GB2089044A patent/GB596581A/en not_active Expired
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