GB610569A - Improvements in or relating to the production of dyes and the sensitisation of photographic emulsions - Google Patents

Improvements in or relating to the production of dyes and the sensitisation of photographic emulsions

Info

Publication number
GB610569A
GB610569A GB1001846A GB1001846A GB610569A GB 610569 A GB610569 A GB 610569A GB 1001846 A GB1001846 A GB 1001846A GB 1001846 A GB1001846 A GB 1001846A GB 610569 A GB610569 A GB 610569A
Authority
GB
United Kingdom
Prior art keywords
methyl
toluenesulphonate
ethyl
dyes
methylbenzthiazole
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
GB1001846A
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.)
HARRY DEREK EDWARDS
Ilford Imaging UK Ltd
Original Assignee
HARRY DEREK EDWARDS
Ilford 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 HARRY DEREK EDWARDS, Ilford Ltd filed Critical HARRY DEREK EDWARDS
Priority to GB1001846A priority Critical patent/GB610569A/en
Publication of GB610569A publication Critical patent/GB610569A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/10The polymethine chain containing an even number of >CH- groups
    • C09B23/105The polymethine chain containing an even number of >CH- groups two >CH- groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

Methine dyes are prepared by condensing, in the presence of a basic condensing agent, a compound of the general formula <FORM:0610569/IV (c)/1> wherein R1 is a hydrocarbon group and R4 alkyl or aralkyl with a compound of the formula <FORM:0610569/IV (c)/2> wherein R5 is H or a hydrocarbon group, R2 is an alkyl hydroxylkyl, aralkyl, or hydroxyaralkyl group, R3 is H or alkyl or aralkyl, D1 is the residue of a 5- or 6-membered heterocyclic ring, which may have fused-on rings, D2 is the residue of a heterocyclic nitrogen ketomethylene ring, X is an anion, and n is 0 or 1. Dyes specified are such that R1 is ethyl and R4 methyl, and derived from p-toluquinaldine methyl-p-toluenesulphonate, 1-methylbenzthiazole methyl- or ethyl-p-toluenesulphonate, 1-methylbenzoxazole methyl-p-toluenesulphonate, 1-methyl-b -naphthathiazole methyl-p-toluenesulphonate, and m -thiazoline methyl-p-toluenesulphonate; both R1 and R4 are ethyl and derived from 1-methylbenzthiazole methyl-p-toluenesulphonate or b -hydroxyethiodide; and R1 is ethyl and R4 benzyl and derived from 1-methylbenzthiazole methodide. Specifications 489,335, 547,060, [Group XX], and 597,446 are referred to.
GB1001846A 1946-04-01 1946-04-01 Improvements in or relating to the production of dyes and the sensitisation of photographic emulsions Expired GB610569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1001846A GB610569A (en) 1946-04-01 1946-04-01 Improvements in or relating to the production of dyes and the sensitisation of photographic emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1001846A GB610569A (en) 1946-04-01 1946-04-01 Improvements in or relating to the production of dyes and the sensitisation of photographic emulsions

Publications (1)

Publication Number Publication Date
GB610569A true GB610569A (en) 1948-10-18

Family

ID=9959917

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1001846A Expired GB610569A (en) 1946-04-01 1946-04-01 Improvements in or relating to the production of dyes and the sensitisation of photographic emulsions

Country Status (1)

Country Link
GB (1) GB610569A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534112A (en) * 1948-10-02 1950-12-12 Ilford Ltd Certain thio derivatives of alpha alkylidene cyanoacetic esters
US2573555A (en) * 1948-10-02 1951-10-30 Ilford Ltd Method for making methine dyestuffs
US2693472A (en) * 1950-03-20 1954-11-02 Ilford Ltd Polymethine compounds
DE1060073B (en) * 1954-11-04 1959-06-25 Ici Ltd Process for the preparation of sensitizing dyes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534112A (en) * 1948-10-02 1950-12-12 Ilford Ltd Certain thio derivatives of alpha alkylidene cyanoacetic esters
US2573555A (en) * 1948-10-02 1951-10-30 Ilford Ltd Method for making methine dyestuffs
US2693472A (en) * 1950-03-20 1954-11-02 Ilford Ltd Polymethine compounds
DE1060073B (en) * 1954-11-04 1959-06-25 Ici Ltd Process for the preparation of sensitizing dyes

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