DE676110C - Process for sensitizing halide silver emulsions - Google Patents

Process for sensitizing halide silver emulsions

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Publication number
DE676110C
DE676110C DEI44318D DEI0044318D DE676110C DE 676110 C DE676110 C DE 676110C DE I44318 D DEI44318 D DE I44318D DE I0044318 D DEI0044318 D DE I0044318D DE 676110 C DE676110 C DE 676110C
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DE
Germany
Prior art keywords
sensitization
diethyl
silver emulsions
sensitizing
maximum
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
DEI44318D
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German (de)
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IG Farbenindustrie AG
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IG Farbenindustrie AG
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Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI44318D priority Critical patent/DE676110C/en
Application granted granted Critical
Publication of DE676110C publication Critical patent/DE676110C/en
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08Sensitivity-increasing substances
    • G03C1/10Organic substances
    • G03C1/12Methine and polymethine dyes
    • G03C1/14Methine and polymethine dyes with an odd number of CH groups
    • G03C1/18Methine and polymethine dyes with an odd number of CH groups with three CH groups

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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

Verfahren zur Sensibilisierung von Halogensilberemulsionen Es ist bereits bekannt; zur Sensibilisierung von Halogensilberemulsionen Carbocyanine zu verwenden, welche in beliebiger Stellung des Benzolringes substituiert sind, Gegenüber den nichtsubstituierten Farbstoffen zeichnen sich diese bei geeigneter Wahl der Substituenten durch ein erhöhtes Sensibilisierungsvermögen ,aus.Process for sensitizing halide silver emulsions It is already known; to sensitize halogen silver emulsions to carbocyanines use which are substituted in any position of the benzene ring, opposite the unsubstituted dyes are distinguished by a suitable choice of Substituents due to an increased sensitivity.

Überraschenderweise wurde nun gefunden, daß die disubstituierten Benzthiocarbocyanine, ab. In dieser Formel sind R1, R2, R3, R4 = Alkyl, Oxalkyl, R,; = Alkyl, X = Cl, Br, J, S04> C H3, Cl O4 oder ein anderer Säurerest. Weiterhin können das Wasserstoffatom des Mittelgliedes der Polymethinkette durch eine 1Vlethylgruppe und die Wasserstoffatome der Seitenglieder durch gleiche oder verschiedene Alkylgruppen substituiert sein.Surprisingly, it has now been found that the disubstituted benzothiocarbocyanines, away. In this formula, R1, R2, R3, R4 = alkyl, oxalkyl, R ,; = Alkyl, X = Cl, Br, I, SO4> C H3, Cl O4 or another acid residue. Furthermore, the hydrogen atom of the central link of the polymethine chain can be substituted by an ethyl group and the hydrogen atoms of the side links can be substituted by identical or different alkyl groups.

In der Abbildung sind vier vergleichende Spektrograinme der gleichen Halogensilberemulsion wiedergegeben, welche die besondere ausgezeichnete Wirkung der 5, 6-Disubstitutionsprodukte zeigen. .In the figure, four comparative spectrographs are the same Halide silver emulsion reproduced, which has the special excellent effect of 5, show 6-disubstitution products. .

Abb. i ist das Spektrum einer Halogensilberemulsion ohne Sensibilisierung.Fig. I is the spectrum of a silver halide emulsion without sensitization.

Abb. z sensibilisiert mit i, i'-Diäthyl-5, 6, 5', 6'-tetramethoxybenlzthiocarbocyäninbromid. die in der 5, 6-Stellung des Benzolringes Alkyl- oder/und Oxalkylgruppen enthalten, den übrigen substituierten Farbstoffen weit überlegen sind. Es zeigt sich insbesondere, daß gerade die Substitution in 5- und 6-Stellung das Sensibilisierungsvermögen günstiger beeinfluß,t als die Substitution in anderen Stellungen. Die Farbstoffe, welche in dem vorliegenden Verfahren zur Anwendung kommen, leiten sich von der allgemeinen Formel Abb. 3 sensibilisiert mit i, i'-Diäthyl-4, 5, 6, 4', 5', 6'-hexamethoxybenzthiocarbocyaninbromid.Fig. Z sensitized with i, i'-diethyl-5, 6, 5 ', 6'-tetramethoxybenlzthiocarbocyanine bromide. which contain alkyl or / and oxalkyl groups in the 5, 6-position of the benzene ring, are far superior to the other substituted dyes. It is particularly evident that it is precisely the substitution in the 5- and 6-positions that increases the capacity for sensitization influence, t than the substitution in other positions. The dyes found in The present procedure to be applied derive from the general Formula Fig. 3 sensitized with i, i'-diethyl-4, 5, 6, 4 ', 5', 6'-hexamethoxybenzthiocarbocyanine bromide.

Abb. 4 sensibilisiert mit i, i'-Diäthyl-4, 7, 4', 7'-tetramethoxybenzthiocarbocyaninjodid. Aus den Abbildungen ist zu ersehen, daß der in 5, 6-Stellung disubstituierte Farbstoff (Abb. z) gegenüber einem anderen Disubs.titutionsprodukt, beispielsweise in 4,7-Stellung (Abb.4), und sogar gegenüber einem Trisubstitutionsprodukt (Abb.3) den weitaus grölten Sensibilisierungsbereich besitzt.Fig. 4 sensitized with i, i'-diethyl-4, 7, 4 ', 7'-tetramethoxybenzthiocarbocyanine iodide. It can be seen from the figures that the dye disubstituted in the 5, 6-position (Fig. Z) compared to another dissolution product, for example in the 4,7-position (Fig.4), and even compared to a trisubstitution product (Fig.3) the far largest Awareness area owns.

Die Verarbeitung der Emulsionen geschieht in bekannter Weise. Die Sensibilisatoren können entweder während der .Emulsionsherstellung zugesetzt oder der Emulsionsschicht im Badeverfahren einverleibt werden. Im folgenden werden noch Beispiele von Farbstoffen gemäß der Erfindung mit ihren Sensibilisierungsbereichen angegeben. c i. i, i'-Diäthyl-5, 6, 5', 6'-teWär,(joxyhenzthiocarbocyaninjodid Absorptionsmaximum 5950A. E., Sensibilisierungsmaximum etwa 625o A. E. (wenig ausgeprägt), Sensibilisierungsgebiet 5ooo bis 7 i oa A. E.The emulsions are processed in a known manner. The sensitizers can either be added during the preparation of the emulsion or incorporated into the emulsion layer in the bathing process. Examples of dyes according to the invention with their sensitization ranges are given below. c i. i, i'-Diethyl-5, 6, 5 ', 6'-teWär, (ioxyhenzthiocarbocyaninjodid Absorption maximum 5950A. E., Sensitization maximum about 625o AU (less pronounced), sensitization area from 5000 to 710 AU

2. i, i'-Diäthyl-5, 6, 5', 6'-tetraäthoxybenzthiocarbocyaninjodid Absorptionsmaximum 6ooo A. E., Sensibilisierungsmaximum 630o A. E. (wenig ausgeprägt), Sensibilisierungsgebiet 5ooo bis 7ioo A. E.2. i, i'-Diethyl-5, 6, 5 ', 6'-tetraethoxybenzthiocarbocyanine iodide Absorption maximum 600o AU, sensitization maximum 630o AU (less pronounced), sensitization area 5000 to 7ioo AU

3. i, i'-Diäthyl-5, 6, 5', 6'-tetramethylbenzthiomesomethylcarbocyaninjodid Absorptionsmaximum etwa 555o A. E., Sensibilisierungsmaximum etwa 6ooo A. E. (wenig ausgeprägt), Sensibilisierungsgebiet 5ooo bis 680o A. E.3. i, i'-Diethyl-5, 6, 5 ', 6'-tetramethylbenzthiomesomethylcarbocyaninine iodide Absorption maximum about 555o AU, sensitization maximum about 600o AU (less pronounced), sensitization area from 5000 to 680o AU

r, i'-Diäthyl-5, 6, S,', 6'-tetramethoxybenzthioinesoäthylcarbocyaninjodid Absorptionsmaximum 585o A. E., Sensibilisierungsmaximum etwa 6ooo A. E. (wenig ausgeprägt), Sensibilisierungsgebiet 4goo bis 6goo A. E.r, i'-diethyl-5, 6, S, ', 6'-tetramethoxybenzthioinesoethylcarbocyanin iodide Absorption maximum 5850 AU, sensitization maximum about 600 AU (less pronounced), sensitization area 4,000 to 6,000 AU

5. i, i'-Diäthyl-5, 6, 5', 6'-tetraäthoxybenzthiomesomethylcarbocyaninjodid Absorptionsmaximum 585o A. E., Sensibilisierungsmaximum etwa 605o A. E. (wenig ausgeprägt), Sensibilisierungsgebiet 490o bis 6goo A. E. 6. i, I'-Diäthyl-5, 6, 5', 6'-tetramethylbenzthiomesoäthylcarbocyanjodid Absorptionsmaximum 562o A. E., Sensibilisierungsmaximum etwa 6ooo A. F_., Sensibilisierungsgebiet 5ooo bis 65oo A. E.5. i, i'-Diethyl-5, 6, 5 ', 6'-tetraethoxybenzthiomesomethylcarbocyanin iodide Absorption maximum 585o AU, sensitization maximum about 6050 AU (less pronounced), sensitization area 490o to 6,000 AU 6. i, I'-diethyl-5, 6, 5 ', 6'-tetramethylbenzthiomesoethylcarbocyanate iodide Absorption maximum 562o AU, sensitization maximum about 60000 AU, sensitization area 5000 to 6500 AU

Claims (1)

PATENTANSPRUCI-I: Verfahren zur Sensibilisierung von Haloge.nsilberemulsionen, gekennzeichnet durch die Verwendung von gegebenenfalls in der Polymethinkette durch Alkyl substituierten Benzthiocarbocyaninen, welche in beiden Benzolkernen in 5, 6-Stellung durch Alkyl- oder/und Oxalkylgruppen substituiert sind.PATENTANSPRUCI-I: Process for sensitizing halogen silver emulsions, characterized by the use of optionally in the polymethine chain by Alkyl substituted benzothiocarbocyanines, which in both benzene nuclei in 5, 6-position are substituted by alkyl or / and oxalkyl groups.
DEI44318D 1932-04-26 1932-04-27 Process for sensitizing halide silver emulsions Expired DE676110C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI44318D DE676110C (en) 1932-04-26 1932-04-27 Process for sensitizing halide silver emulsions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE418745X 1932-04-26
DEI44318D DE676110C (en) 1932-04-26 1932-04-27 Process for sensitizing halide silver emulsions

Publications (1)

Publication Number Publication Date
DE676110C true DE676110C (en) 1939-05-30

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DEI44318D Expired DE676110C (en) 1932-04-26 1932-04-27 Process for sensitizing halide silver emulsions

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DE (1) DE676110C (en)

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