GB1066477A - Sensitized photographic silver bromide or silver bromo-iodide emulsions and processes for their manufacture - Google Patents

Sensitized photographic silver bromide or silver bromo-iodide emulsions and processes for their manufacture

Info

Publication number
GB1066477A
GB1066477A GB2460564A GB2460564A GB1066477A GB 1066477 A GB1066477 A GB 1066477A GB 2460564 A GB2460564 A GB 2460564A GB 2460564 A GB2460564 A GB 2460564A GB 1066477 A GB1066477 A GB 1066477A
Authority
GB
United Kingdom
Prior art keywords
manufacture
processes
silver
group
thiohydantoin
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
GB2460564A
Inventor
Ernst Hoachim Poppe
Johannes Brunken
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.)
Filmfabrik Wolfen VEB
Original Assignee
Filmfabrik Wolfen VEB
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 Filmfabrik Wolfen VEB filed Critical Filmfabrik Wolfen VEB
Priority to GB2460564A priority Critical patent/GB1066477A/en
Publication of GB1066477A publication Critical patent/GB1066477A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C09B23/10—The polymethine chain containing an even number of >CH- groups
    • C09B23/105—The 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

Dyes of the formula <FORM:1066477/C4-C5/1> in which R1 represents an alkyl group of 1-6 C, R2 represents an alkyl group of 3-7 C, R3 and R4 each represents an optionally substituted alkyl or aryl group, e.g. acetoxy ethyl, and R5 and R6 each represents hydrogen, halogen, e.g. Cl or CN, are prepared by reacting compounds of formula <FORM:1066477/C4-C5/2> <FORM:1066477/C4-C5/3> wherein A is an anilino or acetanilido group, B is a phenylimino group and X is an acid radical with an appropriate 1,3-dialkyl-2-thiohydantoin.ALSO:1 - Ethyl - 3 - n - propyl - 2 - thiohydantoin is prepared by reacting ethylamino acetamide hydrochloride or ethylamine acetonitrile with n-propylisothiocyanate. 1 - Ethyl - 3 - n - butyl-2-thiohydantoin is prepared similarly.
GB2460564A 1964-06-12 1964-06-12 Sensitized photographic silver bromide or silver bromo-iodide emulsions and processes for their manufacture Expired GB1066477A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2460564A GB1066477A (en) 1964-06-12 1964-06-12 Sensitized photographic silver bromide or silver bromo-iodide emulsions and processes for their manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2460564A GB1066477A (en) 1964-06-12 1964-06-12 Sensitized photographic silver bromide or silver bromo-iodide emulsions and processes for their manufacture

Publications (1)

Publication Number Publication Date
GB1066477A true GB1066477A (en) 1967-04-26

Family

ID=10214285

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2460564A Expired GB1066477A (en) 1964-06-12 1964-06-12 Sensitized photographic silver bromide or silver bromo-iodide emulsions and processes for their manufacture

Country Status (1)

Country Link
GB (1) GB1066477A (en)

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