GB688038A - Improvements in photographic light filter layers and in oxonol dyes therefor - Google Patents

Improvements in photographic light filter layers and in oxonol dyes therefor

Info

Publication number
GB688038A
GB688038A GB330350A GB330350A GB688038A GB 688038 A GB688038 A GB 688038A GB 330350 A GB330350 A GB 330350A GB 330350 A GB330350 A GB 330350A GB 688038 A GB688038 A GB 688038A
Authority
GB
United Kingdom
Prior art keywords
acid
photographic light
light filter
filter layers
prepared
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
GB330350A
Inventor
John William Janus
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
Application filed by Kodak Ltd filed Critical Kodak Ltd
Priority to GB330350A priority Critical patent/GB688038A/en
Publication of GB688038A publication Critical patent/GB688038A/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
    • G03C1/832—Methine or polymethine dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Dicyclohexylurea is prepared by heating together cyclohexylamine and guaiacol carbonate, and removing the guaiacol by grinding with caustic soda. Dicyclohexylbarbituric acid is prepared by heating together dicyclohexylurea and malonic acid in a mixture of acetic acid and acetic anhydride.ALSO:Bis - (1 : 3 - dicyclohexylbarbituric acid) - 5 - pentamethine oxonol is prepared by boiling together dicyclohexylbarbituric acid, glutaconic aldehyde dianilide hydrochloride, absolute alcohol, and triethylamine.
GB330350A 1950-02-08 1950-02-08 Improvements in photographic light filter layers and in oxonol dyes therefor Expired GB688038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB330350A GB688038A (en) 1950-02-08 1950-02-08 Improvements in photographic light filter layers and in oxonol dyes therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB330350A GB688038A (en) 1950-02-08 1950-02-08 Improvements in photographic light filter layers and in oxonol dyes therefor

Publications (1)

Publication Number Publication Date
GB688038A true GB688038A (en) 1953-02-25

Family

ID=9755762

Family Applications (1)

Application Number Title Priority Date Filing Date
GB330350A Expired GB688038A (en) 1950-02-08 1950-02-08 Improvements in photographic light filter layers and in oxonol dyes therefor

Country Status (1)

Country Link
GB (1) GB688038A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252550A1 (en) * 1986-07-08 1988-01-13 Agfa-Gevaert N.V. Colour photographic motion picture projection film element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252550A1 (en) * 1986-07-08 1988-01-13 Agfa-Gevaert N.V. Colour photographic motion picture projection film element

Similar Documents

Publication Publication Date Title
CH209348A (en) Process for the preparation of a mixture of phthalocyanine sulfonic acids.
GB688038A (en) Improvements in photographic light filter layers and in oxonol dyes therefor
CH259341A (en) Process for the preparation of a disazo dye.
GB459665A (en) Improvements in photographic developers
CH286767A (en) Process for the preparation of a green phthalocyanine series dye.
GB636996A (en) Colour formers for photographic colour developments
GB439241A (en) Improvements relating to the production of photographic-sensitive sheet materials
GB497698A (en) Improvements in or relating to colour-formers for use in colour photography
GB237575A (en) Method of manufacturing acetic anhydride
GB478665A (en) New anthraquinone derivatives
NL85384C (en)
GB488048A (en) Process for the production of photographic and kinematographic pictures in colour
GB458268A (en) Process for the manufacture of hydroxycarbazole monosulphonic acids
CH253398A (en) Process for the preparation of a sulfonic acid group-free monoazo dye of the pyrazolone series.
CH253404A (en) Process for the preparation of a sulfonic acid group-free monoazo dye of the pyrazolone series.
CH253402A (en) Process for the preparation of a sulfonic acid group-free monoazo dye of the pyrazolone series.
CH253401A (en) Process for the preparation of a sulfonic acid group-free monoazo dye of the pyrazolone series.
CH253400A (en) Process for the preparation of a sulfonic acid group-free monoazo dye of the pyrazolone series.
CH253406A (en) Process for the preparation of a sulfonic acid group-free monoazo dye of the pyrazolone series.
CH253405A (en) Process for the preparation of a sulfonic acid group-free monoazo dye of the pyrazolone series.
CH253399A (en) Process for the preparation of a sulfonic acid group-free monoazo dye of the pyrazolone series.
CH267049A (en) Process for the preparation of a metal-containing azo dye.
GB437357A (en) Improvements in and relating to fur-hide and a process for dressing the same
GB499742A (en) Manufacture of a 1-amino-2-hydroxynaphthalenesulphonic-3-carboxylic acid, or of a corresponding 2-hydroxynaphthalenesulphonic-3-carboxylic acid
GB675797A (en) Improvements in or relating to colour photographic processes and materials therefor