DE661044C - Process for the desensitization of photosensitive halogen silver emulsions with the aid of coagulations of anthraquinone - Google Patents

Process for the desensitization of photosensitive halogen silver emulsions with the aid of coagulations of anthraquinone

Info

Publication number
DE661044C
DE661044C DEI54581D DEI0054581D DE661044C DE 661044 C DE661044 C DE 661044C DE I54581 D DEI54581 D DE I54581D DE I0054581 D DEI0054581 D DE I0054581D DE 661044 C DE661044 C DE 661044C
Authority
DE
Germany
Prior art keywords
anthraquinone
desensitization
aid
coagulations
silver emulsions
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
DEI54581D
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
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI54581D priority Critical patent/DE661044C/en
Application granted granted Critical
Publication of DE661044C publication Critical patent/DE661044C/en
Expired legal-status Critical Current

Links

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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/32—Latensification; Densensitisation

Description

Verfahren zum Desensibilisieren von lichtempfindlichen Halogensilberemulsionen mit Hilfe von Abkömmlingen des Anthrachinons Es wurde gefunden, daB als Desensibilisatoren besonders geeignet sind Anthrachinonsäureamide, in deren Amidogruppe mindestens ein Wasserstoffatom durch einen Sulfo-oder Carboxylgruppen tragenden Rest ersetzt ist und das andere Wasserstoffatom der Amidogruppe durch einen organischen Rest, z. B. durch einen Alkyl- bzw. Arylrest, ersetzt sein kann, wobei Tauride und Alkyltauride ausgenommen sind.Process for the desensitization of photosensitive halogen silver emulsions with the aid of derivatives of anthraquinone It has been found that as desensitizers Anthraquinonic acid amides, at least in their amido group, are particularly suitable one hydrogen atom is replaced by a radical bearing sulfo or carboxyl groups and the other hydrogen atom of the amido group by an organic radical, z. B. can be replaced by an alkyl or aryl radical, with taurides and alkyl taurides with exception of.

Diese Verbindungen haben gegenüber den bekannten, für die Desensibilisierung bereits beschriebenen Anthrachinonabkömmlingen den Vorteil, kräftiger zu desensibilisieren und besser löslich zu sein. Ferner besitzen sie den Vorzug, daß bei gleich starker Desensibilisierungswirkung ihre Ausfällbarkeit durch Alkalisalze, wie sie im Entwickler vorkommen (Alkalicarbonate, -sulfite), geringer ist.These compounds have over the known ones for desensitization Anthraquinone derivatives already described have the advantage of being able to desensitize more vigorously and to be more soluble. They also have the advantage that they are equally strong Desensitization effect their precipitability by alkali salts, as they are in the developer occur (alkali carbonates, sulfites), is lower.

Die Amidogruppe kann beispielsweise wie folgt substituiert sein: Stoffe, die gemäß dem vorliegenden Verfahren als Desensibilisatoren verwendet werden, sind beispielsweise die Sarkoside, Phenylglycide sowie von horme3 (5) sich ableitende Verbindungen der Anthxachinoncarbonsäuren und Anthrachinonpulfosäuren, die nachstehende Konstitution ätßfweisen Bei dem vorliegenden Verfahren können die Stoffe im Vorbad oder als Zusatz zum Entwickler verwendet werden. Bei der Verwendung im Vorbad werden ihre desensibilisierenden Eigenschaften durch Zusatz von Natriumsulfit wesentlich verstärkt.The amido group can be substituted, for example, as follows: Substances that are used as desensitizers according to the present process are, for example, the sarcosides, phenylglycides and compounds of anthxaquinone carboxylic acids and anthraquinone sulfonic acids, which are derived from horme3 (5) and have the following constitution In the present process, the substances can be used in the pre-bath or as an additive to the developer. When used in the pre-bath, their desensitizing properties are significantly enhanced by the addition of sodium sulfite.

Beispiel r g des Natriumsalzes eines der vorbezeichneten Anthrachinonsäureamide wird mit -25 g wasserfreiem Natriumsulfit in t 1 Wasser gelöst. In dieser Lösung werden photographische Schichten a Minuten vorgebadet und können dann bei hellgrünem Licht entwickelt werden.Example r g of the sodium salt of one of the aforementioned anthraquinonic acid amides is dissolved in t 1 water with -25 g of anhydrous sodium sulfite. In this solution photographic layers are pre-bathed for a minute and can then be used for light green Light to be developed.

Claims (1)

PATENTANSPRUCH Verfahren zum Desensibilisieren von lichtempfindlichen Halogensilberemulsionen mit Hilfe von Abkömmlingen des Anthrachinons, dadurch gekennzeichnet, daB Anthrachinonsäureamide verwendet werden, in deren Amidogruppe mindestens ein Wasserstoffatom durch einen Sulfo-oder Carboxylgruppen tragenden Rest ersetzt ist, wobei das andere Wasserstoffatom der Amidogruppe durch einen organischen Rest, z. B. durch einen Alkyl-bzw. Arylrest, ersetzt sein kann, mit Ausnahme von Tauriden und Alkyltauriden.PATENT CLAIM Process for desensitizing photosensitive Halogen silver emulsions with the help of derivatives of anthraquinone, characterized in that, that anthraquinonic acid amides are used, in their amido group at least one Hydrogen atom has been replaced by a radical bearing sulfo or carboxyl groups, the other hydrogen atom of the amido group being replaced by an organic radical, e.g. B. by an alkyl or. Aryl radical, can be replaced, with the exception of taurides and alkyl taurides.
DEI54581D 1935-10-11 1936-03-20 Process for the desensitization of photosensitive halogen silver emulsions with the aid of coagulations of anthraquinone Expired DE661044C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI54581D DE661044C (en) 1935-10-11 1936-03-20 Process for the desensitization of photosensitive halogen silver emulsions with the aid of coagulations of anthraquinone

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEI0054581 1935-10-11
DEI0053384 1936-03-19
DEI54581D DE661044C (en) 1935-10-11 1936-03-20 Process for the desensitization of photosensitive halogen silver emulsions with the aid of coagulations of anthraquinone

Publications (1)

Publication Number Publication Date
DE661044C true DE661044C (en) 1938-06-09

Family

ID=27211016

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI54581D Expired DE661044C (en) 1935-10-11 1936-03-20 Process for the desensitization of photosensitive halogen silver emulsions with the aid of coagulations of anthraquinone

Country Status (1)

Country Link
DE (1) DE661044C (en)

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