GB858432A - Substituted para-aminophenols and their use as photographic developers - Google Patents

Substituted para-aminophenols and their use as photographic developers

Info

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
Application number
GB703958A
Inventor
Karl Otto Ganguin
Ivor Humphreys
David William Crichton Ramsay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB703958A priority Critical patent/GB858432A/en
Publication of GB858432A publication Critical patent/GB858432A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29Development processes or agents therefor
    • G03C5/30Developers
    • G03C5/3021Developers 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.
GB703958A 1958-03-05 1958-03-05 Substituted para-aminophenols and their use as photographic developers Expired GB858432A (en)

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)

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