DE645591C - Process for the desensitization of photosensitive halogen silver emulsions with the aid of anthraquinones - Google Patents

Process for the desensitization of photosensitive halogen silver emulsions with the aid of anthraquinones

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Publication number
DE645591C
DE645591C DEI53384D DEI0053384D DE645591C DE 645591 C DE645591 C DE 645591C DE I53384 D DEI53384 D DE I53384D DE I0053384 D DEI0053384 D DE I0053384D DE 645591 C DE645591 C DE 645591C
Authority
DE
Germany
Prior art keywords
anthraquinones
desensitization
halogen silver
silver emulsions
aid
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
DEI53384D
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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 DEI53384D priority Critical patent/DE645591C/en
Application granted granted Critical
Publication of DE645591C publication Critical patent/DE645591C/en
Expired legal-status Critical Current

Links

Description

Verfahren zum Desensibilisieren von lichtempfindlichen Halogensilberemulsionen_ mit Hilfe von Abkömmlingen der Anthrachinone Es wurde bereits vorgeschlagen, zur Desensibilisierung von lichtempfindlichen, .insbesondere panchromatischen Halogensilberemulsionsschichten- wasserlösliche Abkömmlinge der Anthrachinone oder Phenanthrenchinone, insbesondere Anthrachinoncarbonsäure und Anthrachinonsulfosäure, zu verwenden. Diese Verbindungen haben jedoch keine praktische Verwendung gefunden, weil ihre desensibilisierende Wirkung verhältnismäßig gering ist und der dem bekannten Pinakryptolgrün erheblich unterlegen- -ist_ Einige der bekannten Verbindungen bilden ferner mit kalkhaltigem Wasser Niederschläge, während ein anderer Teil gefärbt ist. Diese Eigenschaften sind jedoch für Desensibilisatoren unerwünscht.Process for desensitizing photosensitive halogen silver emulsions_ with the help of derivatives of the anthraquinones it has already been proposed to Desensitization of light-sensitive, especially panchromatic halogen silver emulsion layers water-soluble derivatives of the anthraquinones or phenanthrenequinones, in particular Anthraquinone carboxylic acid and anthraquinone sulfonic acid, to use. These connections however, have not found practical use because of their desensitizing properties The effect is relatively small and that of the well-known pinacryptol green is considerable inferior- -is_ Some of the known compounds also form with calcareous Water precipitation while another part is colored. These properties however, they are undesirable for desensitizers.

Es wurde nun gefunden, daß die Tauride der Anthrächinoncarbonsäuren und -sulfosäuren ein ausgezeichnetes Desensibilisierungsvermögen besitzen und die obenerwähnten Nachteile nicht aufweisen. In ihrer desensibilisierenden Wirkung übertreffen sie das als bisher besten Desensibilisator bekannte Pinakryptolgrün erheblich. Die Verbindungen bilden keine schwerlöslichen Kalksalze und sind farblos. Durch das Zusammentreffen dieser günstigen Eigenschaften sind diese Stoffe geradezu als ideale Desensibilisatoren anzusehen. Die Stoffe können entweder im Vorbad oder als Zusatz zum Entwickler verwendet werden. Bei der Verwendung im V orbad werden ihre desensibilisierenden Eigenschaften durch Zusatz von Natriumsulfit wesentlich verstärkt. Entsprechend ist bei Verwendung im Entwickler ihre Wirkung um so stärker, je mehr Natriumsulfit derEntwickler enthält. Beispiel i -i g N atriumsalz des Anthrachinons-i-sulfomethyltaurids wird in i 1 Wasser gelöst; in dieser Lösung werden orthochromatische oder panchromatische photographische Schichten 2 Minyxten vorgebadet. Die Entwicklung kann dann z. B. bei einem hellgrünen Licht erfolgen. Beispiel 2 i g Natriumsalz des ArithrachinOn-2-sulfomethyltaurids wird mit 25 g Natriumsulfit sicc. in i 1 Wasser gelöst. In dieser Lösung werden photographische Schichten 2 Minuten vorgebadet und dann bei einem hellgrünen Licht entwickelt. Beispiel 3 Orthochromatische und panchromatische photographische Schichten werden in 1 1 Entwick Ier folgender Zusammensetzung entwickelt: xj@ Wasser, x." Metol, i25 g Natriumsulfit sicc.; 5,8 g@ Söd'a sicc., 2,5 g, Ka-. liumbromid, o,5 g Natriumsalz des An, chinon-2-sulfomethyitaurins. Die Es Jung erfolgt zunächst r Minute im Dunkeln und kann dann bei einem hellgrünen oder gelben Licht fortgesetzt werden.It has now been found that the taurides of the anthraquinone carboxylic acids and sulfonic acids have excellent desensitizing properties and do not have the disadvantages mentioned above. In terms of their desensitizing effect, they significantly outperform pinacryptol green, which is known to be the best desensitizer to date. The compounds do not form sparingly soluble calcium salts and are colorless. Due to the combination of these beneficial properties, these substances can be regarded as ideal desensitizers. The substances can either be used in the pre-bath or as an additive to the developer. When used in the bath, their desensitizing properties are significantly enhanced by the addition of sodium sulfite. Accordingly, when used in the developer, the more sodium sulfite the developer contains, the stronger its effect. Example i -ig N atrium salt of anthraquinone-i-sulfomethyltauride is dissolved in 1 liter of water; orthochromatic or panchromatic photographic layers 2 minyxts are pre-bathed in this solution. The development can then e.g. B. be done with a bright green light. Example 2 ig sodium salt of arithraquinOn-2-sulfomethyltauride is sicc with 25 g of sodium sulfite. dissolved in i 1 water. Photographic layers are pre-bathed in this solution for 2 minutes and then developed in a bright green light. Example 3 Orthochromatic and panchromatic photographic layers are developed in 1 l developer of the following composition: xj @ water, x. "Metol, i25 g sodium sulfite sicc .; 5.8 g @ Söd'a sicc., 2.5 g, ca . lium bromide, 0.5 g sodium salt of an, quinone-2-sulfomethylitaurine. The It Jung is initially done for r minute in the dark and can then be continued with a bright green or yellow light.

Die einfachsten Verbindungen dieser Stoffd@l sse haben beispielsweise folgende Formeln: i. Antliraelllnori-2-SUlfotaurid 2. Anthracliinon-2-carbonsäuretaurid The simplest compounds of these substance nozzles have, for example, the following formulas: i. Antliraelllnori-2-SUlfotaurid 2. Anthraclinone-2-carboxylic acid tauride

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zum Desensibilisieren von lichtempfindlichen Halogensilberemulsionen mit Hilfe von Abkömmlingen der Anthrachinone, dadurch gekennzeichnet, daß man Tauride der Anthrachinoncarbonsäuren und/oder -sulfosäureh verwendet. PATENT CLAIMS: i. Process for desensitizing photosensitive Halogen silver emulsions with the help of derivatives of the anthraquinones, characterized in that, that one uses taurides of the anthraquinone carboxylic acids and / or sulfonic acids. 2. Verfahren zum Desensibilisieren von lichtempfindlichen Halogensilberemulsionen nach Anspruch i, dadurch gekennzeichnet, daß man die Tauride der Anthracliinoncarbonsäuren und/oder -sulfosäuren in Gegenwart von Natriumsulfit anwendet. 2. Process for desensitizing photosensitive halogen silver emulsions according to Claim i, characterized in that the taurides of the Anthracliinoncarbonsäuren and / or sulfonic acids in the presence of sodium sulfite. 3. Verfahren zum Desensibilisieren von lichtempfindlichen HalogensiIberemulsionen nach Anspruch i und 2, daduich gekennzeichnet, daß man die Tauride der Anthrachinoncarbonsäuren und/oder -sulfosäuren einem Entwickler zusetzt.3. Procedure for Desensitization of photosensitive halogen silver emulsions according to claim i and 2, characterized in that the taurides of the anthraquinone carboxylic acids and / or sulfonic acids added to a developer.
DEI53384D 1935-10-11 1935-10-12 Process for the desensitization of photosensitive halogen silver emulsions with the aid of anthraquinones Expired DE645591C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI53384D DE645591C (en) 1935-10-11 1935-10-12 Process for the desensitization of photosensitive halogen silver emulsions with the aid of anthraquinones

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEI0054581 1935-10-11
DEI53384D DE645591C (en) 1935-10-11 1935-10-12 Process for the desensitization of photosensitive halogen silver emulsions with the aid of anthraquinones
DEI0053384 1936-03-19

Publications (1)

Publication Number Publication Date
DE645591C true DE645591C (en) 1937-05-31

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Application Number Title Priority Date Filing Date
DEI53384D Expired DE645591C (en) 1935-10-11 1935-10-12 Process for the desensitization of photosensitive halogen silver emulsions with the aid of anthraquinones

Country Status (1)

Country Link
DE (1) DE645591C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218365B (en) * 1960-12-13 1966-06-02 Josef Haeger Device for shearing chain threads

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218365B (en) * 1960-12-13 1966-06-02 Josef Haeger Device for shearing chain threads

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