GB481275A - Improvements relating to photographic developers - Google Patents

Improvements relating to photographic developers

Info

Publication number
GB481275A
GB481275A GB15966/36A GB1596636A GB481275A GB 481275 A GB481275 A GB 481275A GB 15966/36 A GB15966/36 A GB 15966/36A GB 1596636 A GB1596636 A GB 1596636A GB 481275 A GB481275 A GB 481275A
Authority
GB
United Kingdom
Prior art keywords
mol
mols
ethylene oxide
condensation product
diazotized
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
GB15966/36A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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
Priority to DEI55101D priority Critical patent/DE767652C/en
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB15966/36A priority patent/GB481275A/en
Priority to US143724A priority patent/US2163166A/en
Priority to FR822269D priority patent/FR822269A/en
Publication of GB481275A publication Critical patent/GB481275A/en
Expired legal-status Critical Current

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
    • G03C7/407—Development processes or agents therefor
    • G03C7/413—Developers
    • G03C7/4136—Developers p-Phenylenediamine or derivatives thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

Colour developers comprise derivatives of p-phenylenediamine having attached to one of the nitrogen atoms a positive radical containing a group which increases the solubility in water. The compounds may be of one of the following general formul <FORM:0481275/IV/1> where R1 is alkylene, arylene or aralkylene, Y is -COOH or -SO3H, R is -H, alkyl, aryl, oxyalkyl &c., X is -(CH2.CH2.O)n-CH2CH2 OH, and n is a whole number. The compounds are obtained by reducing with tin and hydrochloric acid, the dye obtained by coupling diazotized substances with, e.g. p-sulphobenzylaniline or the condensation product of 1 mol. mono-ethylaniline and 3 mols. ethylene oxide. In the examples, the developers are obtained by the reduction of the dye products of the following reactions: (1) 1 mol. N-methyl-N-phenyl-benzylamine-2-propionic acid with 1 mol. of diazotized sulphanilic acid; (2) 1 mol. p-sulphobenzylaniline with 1 mol. diazotized sulphanilic acid; (3) 1 mol di-(p-sulphobenzyl)-aniline with 1 mol. diazotized sulphanilic acid; (4) 1 mol. of a condensation product from 1 mol. monoethylaniline and 3 mols. ethylene oxide, which is coupled with diazotized p-nitraniline; (5) 1 mol. of a condensation product from 1 mol. nitromethyl-m-toluidine and 2 mols. ethylene oxide; (6) 1 mol. of a condensation product from 1 mol. ethylaniline and 2 mols. of ethylene oxide which is coupled as in (1); (7) 1 mol. of a condensation product from 1 mol. monoethyl-m-toluidine and 2 mols. of ethylene oxide also coupled as in (1). Specifications 2562/13, [Class 98 (ii)], and 460,580 are referred to.
GB15966/36A 1936-05-27 1936-06-08 Improvements relating to photographic developers Expired GB481275A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEI55101D DE767652C (en) 1936-05-27 1936-05-27 Process for the color development of halogen silver emulsions
GB15966/36A GB481275A (en) 1936-05-27 1936-06-08 Improvements relating to photographic developers
US143724A US2163166A (en) 1936-05-27 1937-05-20 Photographic developer
FR822269D FR822269A (en) 1936-05-27 1937-05-26 Process for color development of silver halide emulsions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEI55101D DE767652C (en) 1936-05-27 1936-05-27 Process for the color development of halogen silver emulsions
GB15966/36A GB481275A (en) 1936-05-27 1936-06-08 Improvements relating to photographic developers

Publications (1)

Publication Number Publication Date
GB481275A true GB481275A (en) 1938-03-08

Family

ID=25981935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15966/36A Expired GB481275A (en) 1936-05-27 1936-06-08 Improvements relating to photographic developers

Country Status (4)

Country Link
US (1) US2163166A (en)
DE (1) DE767652C (en)
FR (1) FR822269A (en)
GB (1) GB481275A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611785A (en) * 1952-09-23 N-substituted x
US2486440A (en) * 1946-01-10 1949-11-01 Gen Aniline & Film Corp Production of phenazonium dyestuff images
US2449919A (en) * 1947-07-05 1948-09-21 Eastman Kodak Co 3-methylsulfonamido-4-amino dimethyl aniline photographic developer
US2604399A (en) * 1949-07-07 1952-07-22 Eastman Kodak Co Photographic developers comprising bis-(di-hydroxyalkyl aminomethyl)-hydroquinones
US2575027A (en) * 1949-10-29 1951-11-13 Gen Aniline & Film Corp N-substituted 4, 6-diamino metanilic acids
US2603659A (en) * 1950-06-16 1952-07-15 Du Pont Photographic developers
BE508676A (en) * 1951-01-26
US2603656A (en) * 1951-02-27 1952-07-15 Du Pont Photographic developing agents
US2716132A (en) * 1952-10-22 1955-08-23 Du Pont N-substituted amino anilines
US3113124A (en) * 1959-11-27 1963-12-03 Pennsalt Chemicals Corp Novel antiozonants for elastomers
US3181942A (en) * 1961-11-15 1965-05-04 Pennsalt Chemicals Corp Method of controlling plant growth
US3661587A (en) * 1968-04-01 1972-05-09 Itek Corp Photographic media
US3656950A (en) * 1970-12-03 1972-04-18 Eastman Kodak Co Color photographic processes
US3658525A (en) * 1970-12-03 1972-04-25 Eastman Kodak Co Reversal color photographic processes
US4066457A (en) * 1974-12-10 1978-01-03 Gaf Corporation Color developer for diffusion transfer
US4066456A (en) * 1974-12-10 1978-01-03 Gaf Corporation Incorporated carboxy substituted p-phenylenediamine color developer
US4113491A (en) * 1975-02-10 1978-09-12 Konishiroku Photo Industry Co., Ltd. Color photographic developing composition

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102755C (en) *
DE253335C (en) * 1912-02-06

Also Published As

Publication number Publication date
DE767652C (en) 1953-03-02
US2163166A (en) 1939-06-20
FR822269A (en) 1937-12-24

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