DE279756C - - Google Patents

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Publication number
DE279756C
DE279756C DENDAT279756D DE279756DA DE279756C DE 279756 C DE279756 C DE 279756C DE NDAT279756 D DENDAT279756 D DE NDAT279756D DE 279756D A DE279756D A DE 279756DA DE 279756 C DE279756 C DE 279756C
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DE
Germany
Prior art keywords
parts
developer
water
methylaminophenol
developing
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.)
Active
Application number
DENDAT279756D
Other languages
German (de)
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.)
Publication of DE279756C publication Critical patent/DE279756C/de
Active 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/30—Developers
    • G03C5/3021—Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

— JVe 279756-KLASSE 576. GRUPPE - JVE 279756- CLASS 576. GROUP

Photographischer Entwickler. Patentiert im Deutschen Reiche vom 5. August 1913 ab.Photographic developer. Patented in the German Empire on August 5, 1913.

Die Verwendung von N - monoalkyliertenThe use of N - monoalkylated

4-Aminophenolen zum Entwickeln des latenten photographischen Bildes ist bekannt und das 4-Methylaminophenol und das 4-Oxyphenylglycin sind wertvolle Entwicklersubstanzen.4-aminophenols for developing the latent photographic image are known and that 4-methylaminophenol and 4-oxyphenylglycine are valuable developer substances.

Nach den bisherigen Kenntnissen war das Entwicklervermögen auf das 4-Aminophenol selbst und seine Monoalkylderivate beschränkt, denn dem 4 - Dimethylaminophenol kommt diese Eigenschaft nicht zu.According to previous knowledge, the developer capacity was due to the 4-aminophenol itself and its monoalkyl derivatives are limited because the 4 - dimethylaminophenol comes this property does not apply.

Es wurde nun überraschenderweise gefunden, daß im 4-Oxyphenil-alkyl-glycin von der Konstitution :It has now surprisingly been found that in 4-oxyphenil-alkyl-glycine the constitution :

AIlCyI-N-CH2-COOHAIlCyI-N-CH 2 -COOH

OHOH

Dialkylderivate des 4-Aminophenols vorliegen, die sich vorzüglich als Entwickler ' eignen. Ihre entwickelnde Kraft ist sehr groß und sie arbeiten äußerst klar. In bezug auf Entwicklungsgeschwindigkeit stehen sie in der Mitte zwischen 4-Methylaminophenol und 4-Oxyphenylglycin. Vor diesen und sonstigen Entwicklern haben sie den besonderen Vorzug außerordentlicher Löslichkeit in Alkalicarbonaten, so daß man ganz konzentrierte, von Ätzalkalien freie Lösungen herstellen kann, die zum Gebrauch nur mit viel Wasser verdünnt zu werden brauchen.Dialkyl derivatives of 4-aminophenol are present, which are particularly suitable as developers. Their developing power is very great and they work extremely clearly. With regard to the speed of development, they are in the Middle between 4-methylaminophenol and 4-oxyphenylglycine. Before these and others Developers they have the particular advantage of extraordinary solubility in alkali carbonates, so that you can produce very concentrated solutions free of caustic alkalis, which can only be diluted with plenty of water for use need to become.

Das bisher nicht beschriebene 4-Oxyphenylmethylglycin kann durch Einwirkung von Chloressigsäure auf 4-Methylaminophenol erhalten werden. Es bildet farblose Nadeln, die sich nach vorhergehendem Erweichen bei 1140 unter Kohlendioxydentwicklung zu zersetzen beginnen. Es löst sich leicht in heißem Wasser, in Alkohol, warmem Eisessig, wenig in siedendem Benzol, sehr schwer in Chloroform und ist unlöslich in Äther, Aceton, Ligroin, Petröläther.4-Oxyphenylmethylglycine, not previously described, can be obtained by the action of chloroacetic acid on 4-methylaminophenol. It forms colorless needles begin to decompose under evolution of carbon dioxide according to the previous softening at 114 0th It dissolves easily in hot water, in alcohol, warm glacial acetic acid, little in boiling benzene, very poorly in chloroform, and is insoluble in ether, acetone, ligroin, and petroleum ether.

Zur Herstellung einer konzentrierten Entwicklerlösung löst man beispielsweise 1 Teil 4-Oxyphenylmethylglycin in 12 Teilen Wasser unter Zusatz von 5 Teilen kristallisiertem Natriumsulfit und 5 Teilen Kaliumcarbonat. Diese Lösung wird zum Gebrauch mit 10 bis 30 Teilen Wasser verdünnt.To prepare a concentrated developer solution, for example, 1 part is dissolved 4-oxyphenylmethylglycine in 12 parts of water with the addition of 5 parts of crystallized sodium sulfite and 5 parts of potassium carbonate. These Solution is diluted with 10 to 30 parts of water for use.

Claims (1)

Patent-Anspruch:Patent claim: Verwendung des 4-Oxyphenylalkylglycins zum Entwickeln des latenten photographischen Bildes.Use of 4-oxyphenylalkylglycine for developing the latent photographic image. 5555 BERLIN GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN PRINTED IN THE REICHSDRUCKEREI.
DENDAT279756D 1913-08-08 Active DE279756C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191318095T 1913-08-08

Publications (1)

Publication Number Publication Date
DE279756C true DE279756C (en)

Family

ID=34359763

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT279756D Active DE279756C (en) 1913-08-08

Country Status (2)

Country Link
DE (1) DE279756C (en)
GB (1) GB191318095A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624759A (en) * 1950-11-01 1953-01-06 Frederick C Bersworth Substituted poly aralkyl alkylene poly amino poly acetic acids and salts
US2624760A (en) * 1950-11-01 1953-01-06 Frederick C Bersworth Hydroxy-aromatic alkylene di-imino di-acetic acids and salts
US2624757A (en) * 1950-11-01 1953-01-06 Frederick C Bersworth Substituted aralkyl alkylene diamino di acetic acids and salts
US2624758A (en) * 1950-11-01 1953-01-06 Frederick C Bersworth Substituted mono aralkyl alkylene polyamino polyacetic acids
US2624756A (en) * 1950-11-01 1953-01-06 Frederick C Bersworth Metal ion chelating compounds consisting of mono phenyl poly alkylene polyamino polycarboxylic acids and salts

Also Published As

Publication number Publication date
GB191318095A (en) 1914-03-12

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