GB1072384A - Process for the spectral sensitisation of silver halide emulsions - Google Patents

Process for the spectral sensitisation of silver halide emulsions

Info

Publication number
GB1072384A
GB1072384A GB3034065A GB3034065A GB1072384A GB 1072384 A GB1072384 A GB 1072384A GB 3034065 A GB3034065 A GB 3034065A GB 3034065 A GB3034065 A GB 3034065A GB 1072384 A GB1072384 A GB 1072384A
Authority
GB
United Kingdom
Prior art keywords
silver halide
halide emulsions
spectral sensitisation
sensitisation
spectral
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
GB3034065A
Inventor
Ernst-Joachim Poppe
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
Publication of GB1072384A publication Critical patent/GB1072384A/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
    • 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
    • G03C1/22—Methine and polymethine dyes with an even number of CH groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

The invention relates to dyes of the formula <FORM:1072384/C4-C5/1> wherein R1 and R2 or R2 and R1 represent respectively C2H5 and C2H5, C2H5 and n C3H7, C2H5 and n C4H9 or n C3H7 and C3H7, R3 is Cl or CN and R4 is H or Cl. The dyes are prepared in the usual manner.
GB3034065A 1965-04-23 1965-07-16 Process for the spectral sensitisation of silver halide emulsions Expired GB1072384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD11047265 1965-04-23

Publications (1)

Publication Number Publication Date
GB1072384A true GB1072384A (en) 1967-06-14

Family

ID=5478500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3034065A Expired GB1072384A (en) 1965-04-23 1965-07-16 Process for the spectral sensitisation of silver halide emulsions

Country Status (4)

Country Link
BE (1) BE668594A (en)
CH (1) CH444664A (en)
FR (1) FR1496719A (en)
GB (1) GB1072384A (en)

Also Published As

Publication number Publication date
FR1496719A (en) 1967-10-06
BE668594A (en) 1965-12-16
CH444664A (en) 1967-09-30

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