GB664836A - Improvements in photographic imbibition dye printing processes - Google Patents
Improvements in photographic imbibition dye printing processesInfo
- Publication number
- GB664836A GB664836A GB25826/48A GB2582648A GB664836A GB 664836 A GB664836 A GB 664836A GB 25826/48 A GB25826/48 A GB 25826/48A GB 2582648 A GB2582648 A GB 2582648A GB 664836 A GB664836 A GB 664836A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbethoxy
- methyl
- photographic
- prepared
- printing processes
- 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
- G03C7/22—Subtractive cinematographic processes; Materials therefor; Preparing or processing such materials
- G03C7/25—Dye-imbibition processes; Materials therefor; Preparing or processing such materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Abstract
1 - Carbethoxy - 3 - methyl - 6 - bromoanthrapyridone is prepared by heating together 1-methylamino-4-bromoanthraquinone, acid-free ethyl malonate, and sodium acetate.ALSO:1 - Carbethoxy - 3 - methyl - 6 - (41 - chloranilino)-anthrapyridone is prepared by heating together 1 - carbethoxy - 3 - methyl - 4 - bromo-anthrapyridine, p-chloroaniline, sodium acetate, and copper acetate. 1 - Carbethoxy - 3 - methyl - 6 - (41 - chloro - 21 - sulphoanilino)-anthrapyridine (ammonium salt) is prepared by treating 1-carbethoxy-3-methyl-6 - (41 - chloranilino) - anthrapyridone with sulphuric acid and oleum, allowing to stand, pouring into cold water, and neutralizing with ammonium hydroxide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US777494A US2537924A (en) | 1947-10-02 | 1947-10-02 | Photographic-imbibition dye printing process |
Publications (1)
Publication Number | Publication Date |
---|---|
GB664836A true GB664836A (en) | 1952-01-16 |
Family
ID=25110413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25826/48A Expired GB664836A (en) | 1947-10-02 | 1948-10-04 | Improvements in photographic imbibition dye printing processes |
Country Status (2)
Country | Link |
---|---|
US (1) | US2537924A (en) |
GB (1) | GB664836A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2841078A (en) * | 1953-03-02 | 1958-07-01 | Comstock & Wescott | Photographic color correction in imbibition printing |
US3835781A (en) * | 1972-03-13 | 1974-09-17 | J Erdell | Method for obtaining photographic reproductions in color |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1517200A (en) * | 1920-08-18 | 1924-11-25 | Dye Impression Photos Ltd | Process of dye transfer printing from photographic negatives |
US1484346A (en) * | 1921-04-14 | 1924-02-19 | Karl Werth | Process for producing negatives from nontransparent originals for use in preparing printing plates |
US1926556A (en) * | 1930-01-25 | 1933-09-12 | Ig Farbenindustrie Ag | Dyeing wool |
BE412588A (en) * | 1934-12-08 |
-
1947
- 1947-10-02 US US777494A patent/US2537924A/en not_active Expired - Lifetime
-
1948
- 1948-10-04 GB GB25826/48A patent/GB664836A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2537924A (en) | 1951-01-09 |
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