DE622685C - Process for increasing the blue sensitivity of photosensitive halogen silver emulsions - Google Patents

Process for increasing the blue sensitivity of photosensitive halogen silver emulsions

Info

Publication number
DE622685C
DE622685C DEI40591D DEI0040591D DE622685C DE 622685 C DE622685 C DE 622685C DE I40591 D DEI40591 D DE I40591D DE I0040591 D DEI0040591 D DE I0040591D DE 622685 C DE622685 C DE 622685C
Authority
DE
Germany
Prior art keywords
increasing
blue sensitivity
silver emulsions
halogen silver
photosensitive halogen
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
DEI40591D
Other languages
German (de)
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Publication date
Priority to DEI40591D priority Critical patent/DE622685C/en
Application granted granted Critical
Publication of DE622685C publication Critical patent/DE622685C/en
Expired legal-status Critical Current

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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
    • G03C1/14—Methine and polymethine dyes with an odd number of CH groups
    • G03C1/16—Methine and polymethine dyes with an odd number of CH groups with one CH group

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Description

Es wurde gefunden, daß die Selenogyanine, d. h. Benzoselenazolcyanin, und die im Benzolring substituierten Selenocyanine ebenso wie Naphthoselenazoicyanin in Form ihrer Alkylhalogenide oder Alkylsulfoalkylate die Blauempfindlichkeit lichtempfindlicher Halogensilberemulsionen zu steigern vermögen. Ihr Sensibilisierungsbereich erstreckt sich von 4300 bis 5200 AE.It has been found that the selenogyanines, i.e. H. Benzoselenazolcyanin, and the selenocyanines substituted in the benzene ring as well as Naphthoselenazoicyanine in the form of their alkyl halides or alkyl sulfoalkylates the blue sensitivity of photosensitive halogen silver emulsions able to increase. Your awareness range extends from 4300 to 5200 AU.

In der beiliegenden Zeichnung ist das Spektrogramm einer nach demneuen Verfahren sensibilisierten Halogensilberemulsion wiedergegeben:In the accompanying drawing, the spectrogram is one according to the new method sensitized halogen silver emulsion reproduced:

Die neuen Sensibilisatoren haben die nachstehende Formel:The new sensitizers have the formula below:

In der Formel können für R1 Alkyl-, Oxalkyl- oder Halogen 'eintreten, R2 katin ein beliebiges Alkylradikal, X ein Halogen öder der Rest einer Alkylschwefelsäure sein.In the formula, R 1 can be alkyl, oxyalkyl or halogen, R 2 can be any alkyl radical, X can be a halogen or the residue of an alkylsulfuric acid.

Die Sensibilisatoren, die für Kochemulsionen ebenso wie für Ammoniakemulsionen geeignet sind, können während der Emulsionsherstellung zugesetzt oder auch der fertigen Emulsionsschicht im Badeverjfahren einverleibt werden. Die zur Sensibilisierung erforderlichen Mengen bewegen sich in der für andere optische Sensibilisatoren bekannten Größenordnung.The sensitizers necessary for cooking emulsions as are suitable for ammonia emulsions, can be used during emulsion preparation added or incorporated into the finished emulsion layer in the bathing process will. The quantities required to raise awareness are in the range for other optical sensitizers of known magnitude.

Als Beispiele für Sensibilisatoren nach der Erfindung seien die folgenden genannt:The following are examples of sensitizers according to the invention:

•S\/\• S \ / \

\ CH,\ CH,

OCH, R0XOCH, R 0 X

R2 OCH3 R 2 OCH 3

Claims (1)

Patentanspruch:Claim: Verfahren zur Erhöhung der Blauempfindlichkeit von lichtempfindlichen Halogensilberemulsionen, dadurch gekennzeichnet, daß ihnen Alkylhalogenide oder Alkylsulfoalkylate von einfachen oder im Kern durch Alkyl-, Oxalkylgruppen oder Halogen substituierten Benzoder Naphthoselenocyaninen zugesetzt werden.Process for increasing the blue sensitivity of photosensitive Halogen silver emulsions, characterized in that they contain alkyl halides or alkyl sulfoalkylates of simple or benzene or naphthoselenocyanines which are substituted in the nucleus by alkyl, oxyalkyl groups or halogen are added will. Hierzu I Blatt ZeichnungenFor this purpose I sheet drawings
DEI40591D Process for increasing the blue sensitivity of photosensitive halogen silver emulsions Expired DE622685C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI40591D DE622685C (en) Process for increasing the blue sensitivity of photosensitive halogen silver emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI40591D DE622685C (en) Process for increasing the blue sensitivity of photosensitive halogen silver emulsions

Publications (1)

Publication Number Publication Date
DE622685C true DE622685C (en) 1935-12-04

Family

ID=7190342

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI40591D Expired DE622685C (en) Process for increasing the blue sensitivity of photosensitive halogen silver emulsions

Country Status (1)

Country Link
DE (1) DE622685C (en)

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