GB447748A - Improvements relating to sensitive photographic elements - Google Patents

Improvements relating to sensitive photographic elements

Info

Publication number
GB447748A
GB447748A GB2741834A GB2741834A GB447748A GB 447748 A GB447748 A GB 447748A GB 2741834 A GB2741834 A GB 2741834A GB 2741834 A GB2741834 A GB 2741834A GB 447748 A GB447748 A GB 447748A
Authority
GB
United Kingdom
Prior art keywords
salicylaldehyde
coupling
benzaldehyde
benzene
dyes
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
GB2741834A
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.)
Kodak Ltd
Original Assignee
Kodak 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
Priority to NL44573D priority Critical patent/NL44573C/xx
Priority to BE411395D priority patent/BE411395A/xx
Application filed by Kodak Ltd filed Critical Kodak Ltd
Priority to GB2741834A priority patent/GB447748A/en
Priority to FR795180D priority patent/FR795180A/en
Publication of GB447748A publication Critical patent/GB447748A/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
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/83—Organic dyestuffs therefor
    • G03C1/831—Azo dyes
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/83—Organic dyestuffs therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Luminescent Compositions (AREA)

Abstract

Screening-layers for photographic sensitive material consist of a carrier and a dye containing an aldehyde group as substituent. Suitable dyes are the aldehyde substituted benzene- and naphthalene-azo-phenols and aldehyde substituted fluorescein dyes. Aldehyde substituted benzene-azo-resorcinol, benzene-azo-cresol, and Diamond Yellow G are suitable. Examples are given of the preparation of: (1) 2-hydroxy-5-phenylazo-benzaldehyde by coupling benzene diazonium chloride with salicylaldehyde in caustic soda solution; (2) 2 : 4-dihydroxy-5-phenylazo-benzaldehyde by coupling benzene diazonium chloride with resorcylaldehyde and precipitating with sodium acetate; (3) 3-resorcylazo-benzaldehyde by coupling diazotized m - nitrobenzaldehyde with resorcinol; (4) 2-hydroxy-5-a -naphthylazo-benzaldehyde by coupling diazotized a - naphthylamine with salicylaldehyde; (5) p:p<1> - diphenyl - disazophenol-salicylaldehyde by coupling diazotized benzidine with phenol and salicylaldehyde; (6) the disalicylaldehyde corresponding to (5); (7) the disulphonic acid derivative of (6) starting from benzidine disulphonic acid; and (8) 4 : 4<1>-diphenyl-disazo-salicylaldehyde-salicylic acid by coupling diazotized benzidine with salicylaldehyde and salicylic acid. The dyes formed by coupling nitroso-dialkylanilines with hydroxy benzaldehydes may also be used. The dyes are decoloured by an acid permanganate or quinone bromide bleach bath. Specifications 440,032, 444,198, and 447,092, [all in Group XX], are referred to.
GB2741834A 1934-09-24 1934-09-24 Improvements relating to sensitive photographic elements Expired GB447748A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL44573D NL44573C (en) 1934-09-24
BE411395D BE411395A (en) 1934-09-24
GB2741834A GB447748A (en) 1934-09-24 1934-09-24 Improvements relating to sensitive photographic elements
FR795180D FR795180A (en) 1934-09-24 1935-09-23 Sensitive photographic products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2741834A GB447748A (en) 1934-09-24 1934-09-24 Improvements relating to sensitive photographic elements

Publications (1)

Publication Number Publication Date
GB447748A true GB447748A (en) 1936-05-25

Family

ID=10259248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2741834A Expired GB447748A (en) 1934-09-24 1934-09-24 Improvements relating to sensitive photographic elements

Country Status (4)

Country Link
BE (1) BE411395A (en)
FR (1) FR795180A (en)
GB (1) GB447748A (en)
NL (1) NL44573C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744264C (en) * 1938-07-14 1944-01-13 Ig Farbenindustrie Ag Process for the production of color photographic images with the aid of non-diffusible dye formers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744264C (en) * 1938-07-14 1944-01-13 Ig Farbenindustrie Ag Process for the production of color photographic images with the aid of non-diffusible dye formers

Also Published As

Publication number Publication date
FR795180A (en) 1936-03-07
BE411395A (en)
NL44573C (en)

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