GB858432A - Substituted para-aminophenols and their use as photographic developers - Google Patents
Substituted para-aminophenols and their use as photographic developersInfo
- Publication number
- GB858432A GB858432A GB703958A GB703958A GB858432A GB 858432 A GB858432 A GB 858432A GB 703958 A GB703958 A GB 703958A GB 703958 A GB703958 A GB 703958A GB 858432 A GB858432 A GB 858432A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydroxytoluene
- ethyl
- describes
- preparation
- hydroxy
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
- G03C5/3021—Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention comprises N-substituted p-aminophenols of the general formula : <FORM:0858432/IV(b)/1> wherein R1 represents a hydrogen atom or an alkyl or hydroxyalkyl group containing 1 to 6 carbon atoms, R2 represents a hydroxyalkyl, carboxyalkyl, sulphoalkyl or sulphatoalkyl group containing 1 to 6 carbon atoms in the alkyl chain, and X represents a hydrogen atom or an alkyl or alkoxy group, and the salts of said compounds. The compounds have use as photographic developers(see Group XX). Example 1 describes the preparation of 5-(N-ethyl-N-d -hydroxybutylamino)-2-hydroxytoluene by reacting 5-ethylamino-2-hydroxytoluene with d -bromobutyl acetate, hydrolysing off the acetyl group from the product, and isolating the desired compound in the form of its salt with naphthalene-1, 5-disulphonic acid. In Example 8, the same salt is obtained by the action of p-nitrosophenol on 4-amino-3-methyl p N-ethyl-N-d -hydroxybutylaniline naphthalene-1, 5-disulphonate. Example 2 describes the preparation of 5-(N-ethyl - N - o - sulphobutylamino) - 2 - hydroxy-toluene by reacting 5-ethylamino-2-hydroxy-toluene with the sultone of 4-hydroxy-1-butane sulphonic acid. Example 3 describes the preparation of 5-(N-ethyl-N-d -sulphatobutyl-amino)-2-hydroxytoluene by treating the hydroxy compound of example 1 with chlorosulphonic acid. Example 4 describes the preparation of 5-(N, N- di-epsilonhydroxypentylamino)-2-hydroxyanisole by the action of nitrous acid on 4-amino-3-methoxy-N, N- di-(epsilonhydroxypentyl)-aniline. Example 7 describes the preparation of 5 (N-ethyl-N-o -carboxyhexylamino)-2-hydroxytoluene by reacting 5-ethylamino-2-hydroxytoluene with 7-bromoheptanoic acid. Specification 807,899 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB703958A GB858432A (en) | 1958-03-05 | 1958-03-05 | Substituted para-aminophenols and their use as photographic developers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB703958A GB858432A (en) | 1958-03-05 | 1958-03-05 | Substituted para-aminophenols and their use as photographic developers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB858432A true GB858432A (en) | 1961-01-11 |
Family
ID=9825463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB703958A Expired GB858432A (en) | 1958-03-05 | 1958-03-05 | Substituted para-aminophenols and their use as photographic developers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB858432A (en) |
-
1958
- 1958-03-05 GB GB703958A patent/GB858432A/en not_active Expired
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