GB759000A - Improvements in colour photography - Google Patents
Improvements in colour photographyInfo
- Publication number
- GB759000A GB759000A GB29997/54A GB2999754A GB759000A GB 759000 A GB759000 A GB 759000A GB 29997/54 A GB29997/54 A GB 29997/54A GB 2999754 A GB2999754 A GB 2999754A GB 759000 A GB759000 A GB 759000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ascorbyl
- palmitate
- specifications
- colour photography
- prepared
- 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
- G03C7/392—Additives
- G03C7/39208—Organic compounds
- G03C7/3924—Heterocyclic
- G03C7/39268—Heterocyclic the nucleus containing only oxygen as hetero atoms
-
- 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
- G03C7/407—Development processes or agents therefor
- G03C7/413—Developers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
The 5-o-sulphobenzoate, 5-b -sulphopropionate and 5-b -sulphostearate of ascorbyl-6-palmitate are prepared by reacting ascorbyl-6-palmitate with the appropriate acid anhydride. The 5-o-carboxybenzoate and 5-b -carboxypropionate of ascorbyl-6-palmitate are similarly prepared, the acylation being carried out in the presence of a trace of zinc chloride. Specifications 524,154, 524,554, 524,555, 541,589, 557,750, 557,802, 560,371, [all in Group XX], and U.S.A. Specifications 2,375,250 and 2,454,747 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US386672A US2728661A (en) | 1953-10-16 | 1953-10-16 | Ascorbic acid ester antistain agents |
Publications (1)
Publication Number | Publication Date |
---|---|
GB759000A true GB759000A (en) | 1956-10-10 |
Family
ID=23526566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29997/54A Expired GB759000A (en) | 1953-10-16 | 1954-10-18 | Improvements in colour photography |
Country Status (4)
Country | Link |
---|---|
US (1) | US2728661A (en) |
BE (1) | BE532579A (en) |
FR (1) | FR1112594A (en) |
GB (1) | GB759000A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0109118A1 (en) * | 1982-11-12 | 1984-05-23 | Agfa-Gevaert N.V. | Photographic colour material incorporating developing agents for colour development |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE584331A (en) * | 1959-11-05 | |||
US3459548A (en) * | 1967-07-24 | 1969-08-05 | Polaroid Corp | Scavengers for oxidized developing agent |
JPS5310856B2 (en) * | 1971-10-15 | 1978-04-17 | ||
US4144071A (en) * | 1974-04-08 | 1979-03-13 | Fuji Photo Film Co., Ltd. | Photographic light-sensitive material |
US4822898A (en) * | 1985-09-20 | 1989-04-18 | Sumitomo Chemical Company, Limited | Ascorbic acid or erythorbic acid derivatives |
DE19634702A1 (en) * | 1996-08-28 | 1998-03-05 | Agfa Gevaert Ag | Colour photographic material with scavenger in light-insensitive layer to stabilise magenta dye |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2360290A (en) * | 1941-07-31 | 1944-10-10 | Eastman Kodak Co | Preventing formation of color fog in emulsions |
US2356486A (en) * | 1943-04-15 | 1944-08-22 | Eastman Kodak Co | Stain prevention in color photography |
US2384658A (en) * | 1943-07-10 | 1945-09-11 | Eastman Kodak Co | Color photography |
-
0
- BE BE532579D patent/BE532579A/xx unknown
-
1953
- 1953-10-16 US US386672A patent/US2728661A/en not_active Expired - Lifetime
-
1954
- 1954-10-15 FR FR1112594D patent/FR1112594A/en not_active Expired
- 1954-10-18 GB GB29997/54A patent/GB759000A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0109118A1 (en) * | 1982-11-12 | 1984-05-23 | Agfa-Gevaert N.V. | Photographic colour material incorporating developing agents for colour development |
Also Published As
Publication number | Publication date |
---|---|
FR1112594A (en) | 1956-03-15 |
US2728661A (en) | 1955-12-27 |
BE532579A (en) |
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