GB540636A - Improvements relating to coupling components for use in colour photography - Google Patents
Improvements relating to coupling components for use in colour photographyInfo
- Publication number
- GB540636A GB540636A GB12509/41D GB1250941D GB540636A GB 540636 A GB540636 A GB 540636A GB 12509/41 D GB12509/41 D GB 12509/41D GB 1250941 D GB1250941 D GB 1250941D GB 540636 A GB540636 A GB 540636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthol
- acetyl
- group
- compounds
- oxime
- 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
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
- G03C7/32—Colour coupling substances
- G03C7/34—Couplers containing phenols
- G03C7/344—Naphtholic couplers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Indole Compounds (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
540,636. Naphthol derivatives. KODAK, Ltd. (Eastman Kodak Co.). March 12, 1940, No. 12509/41. Divided out of 540,727, [Group XX]. [Class 2 (iii)] [Also in Group XX] A colour coupler for colour development, which may be incorporated in a silver salt emulsion or in the developer, has the general formula where R, is hydrogen or a substituted or unsubstituted alkyl or aryl group, and Z is an oxime, semi-carbazone, or thiosemicarbazone group, or which is the sodium or other salt of one of these compounds. Examples given are 2-acetyl-1-naphthol oxime and 2-acetyl-1-naphthol semicarbazone. The colour coupler may also have the general formula where R 1 is hydrogen or a substituted or unsubstituted alkyl or aryl group or which is the sodium or other salt of one of these compounds, such compounds being obtained by reduction of the first class of compounds. An example given is 2-x-aminoethyl-1-naphthol. The amino compounds may be converted into other colour couplers (a) by treatment with aldehydes to give Schiff bases which can in turn be reduced to secondary amines, or (b) by conversion into amides by carboxylic or sulphonic acids. The naphthalene nucleus may be further substituted. Specifications 440,032, 447,092, 458,664, 458,665, [all in Group XX], 474,353, 478,985, 478,986, 478,989, 478,990, 478,991, 493,952, 496,195, 496,196, 496,245, 502,960, 503,752, 507,841, 509,707, [all in Group XX], 539,070, 539,395, and 539,937 are referred to. 2- Acetyl-1-naphthol oxime is prepared by reacting 2-acetyl-l-naphthol with hydroxylamine. 2- Acetyl-1-naphthol semicarbazone is prepared by reacting 2-acetyl-naphthol with semicarbazide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB465340A GB540727A (en) | 1940-03-12 | 1940-03-12 | Improvements relating to coupling components for use in colour photography |
Publications (1)
Publication Number | Publication Date |
---|---|
GB540636A true GB540636A (en) | 1941-10-23 |
Family
ID=9781256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12509/41D Expired GB540636A (en) | 1940-03-12 | 1940-03-12 | Improvements relating to coupling components for use in colour photography |
Country Status (3)
Country | Link |
---|---|
US (1) | US2295008A (en) |
FR (1) | FR932479A (en) |
GB (1) | GB540636A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2453661A (en) * | 1944-05-03 | 1948-11-09 | Eastman Kodak Co | Colored couplers |
BE476360A (en) * | 1944-05-03 | |||
US2418747A (en) * | 1944-05-20 | 1947-04-08 | Gen Aniline & Film Corp | Nondiffusing phenolic color couplers |
US2448939A (en) * | 1944-06-10 | 1948-09-07 | Eastman Kodak Co | Thioglycolic amide couplers |
DE1069470B (en) * | 1958-04-03 | 1959-11-19 | General Aniline &. Film Corporation, New York, N. Y. (V.St.A.) | Photographic silver halide emulsion or developer with a color former which, after color development with a developer of the p-phenylenediamine rub, gives a yellow azine color image |
GB1118654A (en) * | 1966-03-15 | 1968-07-03 | Agfa Gevaert Nv | Improved light-sensitive silver halide emulsions |
-
1940
- 1940-03-12 GB GB12509/41D patent/GB540636A/en not_active Expired
-
1941
- 1941-03-11 US US382746A patent/US2295008A/en not_active Expired - Lifetime
-
1946
- 1946-08-20 FR FR932479D patent/FR932479A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2295008A (en) | 1942-09-08 |
FR932479A (en) | 1948-03-23 |
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