GB837674A - Improvements in or relating to the sensitization of photographic emulsions - Google Patents

Improvements in or relating to the sensitization of photographic emulsions

Info

Publication number
GB837674A
GB837674A GB27867/56A GB2786756A GB837674A GB 837674 A GB837674 A GB 837674A GB 27867/56 A GB27867/56 A GB 27867/56A GB 2786756 A GB2786756 A GB 2786756A GB 837674 A GB837674 A GB 837674A
Authority
GB
United Kingdom
Prior art keywords
alkyl
aralkyl
group
thio
ethyl
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
GB27867/56A
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Publication of GB837674A publication Critical patent/GB837674A/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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances
    • G03C1/12—Methine and polymethine dyes
    • G03C1/26—Polymethine chain forming part of a heterocyclic ring
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/0008—Methine or polymethine dyes, e.g. cyanine dyes substituted on the polymethine chain
    • C09B23/0025—Methine or polymethine dyes, e.g. cyanine dyes substituted on the polymethine chain the substituent being bound through an oxygen atom
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/0075—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain being part of an heterocyclic ring
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/0075—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain being part of an heterocyclic ring
    • C09B23/0083—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain being part of an heterocyclic ring the heteroring being rhodanine in the chain

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Thiazole And Isothizaole Compounds (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

Rhodacyanine dyes are described having the general formula <FORM:0837674/IV(c)/1> wherein D and D1 complete heterocyclic nuclei, R and R1 are alkyl, aralkyl, aryl or carboxybenzyl groups, R11 is a substituted hydroxyl group, Z and Y or Y and Z respectively are sulphur, and an N-alkyl, N-aryl, N-aralkyl or N-allyl group, m, n and n1 are 0 or 1, A is an alkyl or aralkyl group and X is an anion. The dyes may be prepared by alkylating a merocarbocyanine dye containing a 2-thio-thiazolidone nucleus, and condensing the resulting alkylmercapto derivative with a heterocyclic quaternary salt containing in the 2-position a methyl or a b -methyl-b -alkoxy (or aralkoxy) vinyl group. The merocarbocyanines may be prepared by reacting a heterocyclic quaternary salt containing a 2-b -alkylmercapto-b -alkyl- (or aralkyl) vinyl group with a 2-thio-thiazolidone derivative, or by reacting a 4- or 5- (or alkyl (or aralkyl) ethylidene)-2-thio-thiazolidone with a heterocylic quaternary salt containing a 2-alkyl mercapto group. Examples are given of the preparation of merocarbocyanines from quaternary salts of benzthiazoles, thiazolines or naphthathiazoles and wherein the methine chain carries a methyl, ethyl, benzyl or b -phenylethyl substituent (A), and of the conversion of these into rhodacyanines of the above formula wherein D1 completes a benzthiazole, benzoxazole, benzselenazole, 4 : 5-diphenyl-thiazoline or naphthathiazole nucleus, R1 is ethyl or p-carboxybenzyl, R11 is methoxy or benzyloxy and m is 0 or 1. Y or Z (whichever is not sulphur) may be N-ethyl, N-n-heptyl or N-allyl. Specification 685,390 also is referred to.
GB27867/56A 1955-09-13 1956-09-12 Improvements in or relating to the sensitization of photographic emulsions Expired GB837674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE837674X 1955-09-13

Publications (1)

Publication Number Publication Date
GB837674A true GB837674A (en) 1960-06-15

Family

ID=3881885

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11832/47A Expired GB646137A (en) 1955-09-13 1947-05-02 Improvements in and relating to the sensitising of photographic emulsions and to thepreparation of dyestuffs therefor
GB27867/56A Expired GB837674A (en) 1955-09-13 1956-09-12 Improvements in or relating to the sensitization of photographic emulsions

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB11832/47A Expired GB646137A (en) 1955-09-13 1947-05-02 Improvements in and relating to the sensitising of photographic emulsions and to thepreparation of dyestuffs therefor

Country Status (4)

Country Link
BE (1) BE541245A (en)
DE (1) DE1024800B (en)
FR (1) FR1156729A (en)
GB (2) GB646137A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507649A (en) * 1967-01-31 1970-04-21 Lee C Hensley Sensitized photoconductive zinc oxide
US5034303A (en) * 1989-06-16 1991-07-23 Eastman Kodak Company Infrared absorbing trinuclear cyanine dyes for dye-donor element used in laser-induced thermal dye transfer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918308C (en) * 1944-03-18 1954-09-23 Agfa Ag Fuer Photofabrikation Process for sensitizing halogen silver emulsions, especially chlorine and bromide silver emulsions for photographic papers, with the aid of merocyanines
DE832393C (en) * 1947-05-02 1952-02-25 Gevaert Photo Prod Nv Methods for sensitizing or supersensitizing photographic emulsions

Also Published As

Publication number Publication date
FR1156729A (en) 1958-05-20
GB646137A (en) 1950-11-15
BE541245A (en)
DE1024800B (en) 1958-02-20

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