DE149123C - - Google Patents

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Publication number
DE149123C
DE149123C DE1901149123D DE149123DA DE149123C DE 149123 C DE149123 C DE 149123C DE 1901149123 D DE1901149123 D DE 1901149123D DE 149123D A DE149123D A DE 149123DA DE 149123 C DE149123 C DE 149123C
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DE
Germany
Prior art keywords
water
ecm
solution
developing
developers
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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 - Lifetime
Application number
DE1901149123D
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German (de)
Filing date
Publication of DE149123C publication Critical patent/DE149123C/de
Application filed filed Critical
Priority to AT17454D priority Critical patent/AT17454B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29Development processes or agents therefor
    • G03C5/30Developers
    • G03C5/3021Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Wie gefunden wurde, eignen sich die Amidooxybenzylalkohole, welche man durch Behandeln der nach dem Verfahren des Patentes 136680 erhältlichen Nitrooxybenzylalkohole mit reduzierenden Agentien (wie z. B. Zinn und Salzsäure) erhalten kann, vorzüglich zum Entwickeln von belichteten photographischen Platten und Papieren. Die genannten Körper haben vor anderen ähnlichen gebräuchlichen Entwicklern den Vorteil der leichteren Löslichkeit in Wasser, welche die Herstellung von Entwicklerlösungen bereits mit Hilfe von kohlensauren Alkalien gestattet, zum Unterschiede von p-Amidophenol, p-Amidokresol und p-Phenylendiamin usw., die zur Herstellung von konzentrierten Entwicklerlösungen kaustisches Alkali erfordern, das bekanntlich sowohl die Epidermis als auch die Gelatineschicht der Platten und der Papiere stark angreift.As has been found, the amidooxybenzyl alcohols are suitable, which are obtained by treating the nitrooxybenzyl alcohols obtainable by the process of patent 136680 with reducing agents (such as tin and hydrochloric acid), excellent for developing exposed photographic plates and papers. The mentioned Bodies have the advantage over other similar common developers of easier solubility in water, which the Production of developer solutions already permitted with the help of carbonic acid alkalis, on the differences between p-amidophenol, p-amidocresol and p-phenylenediamine etc., the for the preparation of concentrated developer solutions require caustic alkali, the as is well known, both the epidermis and the gelatin layer of the plates and papers strongly attacks.

Außer der leichten Löslichkeit in Wasser ist noch der Umstand hervorzuheben, daß diese Körper äußerst energisch, vollständig klar und schleierlos entwickeln. Außerdem zeigen die Körper bei der Anwendung als Entwickler im Gegensatz zu den bekannten Rapidentwicklern eine große Modulationsfähigkeit, so daß sie in ihrer Wirkungsweise zwischen diesen Rapidentwicklern und den Phenolentwicklern (wie Pyrogallol usw.) eine Mittelstellung einnehmen.In addition to the ready solubility in water, the fact that these bodies develop extremely energetically, completely clear and veilless. aside from that show the body when applied as a developer in contrast to the known Rapid developers have a great modulation ability, so that they work in their mode of action between these rapid developers and the phenol developers (such as pyrogallol etc.) Take center position.

Zur Herstellung der Entwicklungslösungen dienen folgende Beispiele:The following examples are used to prepare the developing solutions:

Beispiel I. „.Example I. “.

In 50 ecm Wasser löst man zunächst 20 g Natriumsulfit und dann 1 g salzs. m-Amidoo-oxybenzylalkohol (p-Amidosaligenin). Hierauf bereitet man sich eine Lösung von 10 g Soda in 50 ecm Wasser. Durch Vermischen dieser beiden Teillösungen erhält man ein gebrauchsfertiges Entwicklungsbad.First 20 g of sodium sulfite and then 1 g of salt are dissolved in 50 ecm of water. m-amidoo-oxybenzyl alcohol (p-amidosaligenin). A solution of 10 g is then prepared Soda in 50 ecm of water. A ready-to-use solution is obtained by mixing these two partial solutions Developing bath.

Das p-Amidosaligenin kristallisiert in freiem Zustande in schönen, fast farblosen Kirstallen. Es ist in warmem Wasser leicht, in kaltem weniger, in Äther und besonders in Alkohol leicht löslich. Der Körper schmilzt unter starker Bräunung undeutlich zwischen 135 bis 142 °. Beim Liegen an der Luft in feuchtem Zustande zersetzt er sich unter Braunfärbung, dagegen sind seine Salze mit Säuren beständig.The p-amidosaligenin crystallizes in the free state in beautiful, almost colorless Kirstallen. It is light in warm water, less so in cold water, in ether and especially in alcohol easily soluble. The body melts indistinctly between 135 up to 142 °. When lying in the air in a moist state, it decomposes with a brown color, on the other hand, its salts are stable with acids.

Beispiel 2.Example 2.

In einer Lösung von 1 g Acetonnatriumbisulfit und IO g Natriumsulfit in 100 ecm Wasser löst man 1 g salzs. p-Amidosaligenin und gibt zu der so erhaltenen Lösung 20 ecm Aceton. :In a solution of 1 g of acetone sodium bisulfite and 10 g of sodium sulfite in 100 ecm 1 g of salt is dissolved in water. p-Amidosaligenin and adds to the solution thus obtained 20 ecm acetone. :

Die Entwicklungsflüssigkeit ist hiermit zum Gebrauche fertig.The developing liquid is now ready for use.

Beispiel 3.Example 3.

In 50 ecm Wasser werden 5 g Kaliumm-bisulfit und darauf 5 g salzs. ρ-Amidosaligenin gelöst, dann wird die Lösung mit5 g of potassium bisulfite are added to 50 ecm of water and then 5 g of salt. ρ-Amidosaligenin is dissolved, then the solution is with

einer solchen von 40 g Soda (krist.) in 50 ecm Wasser gemischt. Der so erhaltene konzentrierte Sodaentwickler wird zum Gebrauche 10 fach verdünnt.one of 40 g of soda (crystalline) mixed in 50 ecm of water. The concentrated soda developer obtained in this way is diluted 10 times for use.

Selbstverständlich ist man zur Herstellung der Entwicklungsbäder an die gegebenen Beispiele nicht gebunden.It goes without saying that the examples given are used for the preparation of the developing baths not bound.

In analoger Weise verfährt man bei Anwendung des o-Amidooxybenzylalkohols. Dieser Körper kristallisiert --als freie Base in Form fast farbloser, feiner Nadeln, welche unscharf zwischen 112 und 1140 schmelzen. Er ist löslich in Wasser, leichter löslich in Alkohol und bildet mit Säuren beständige Salze.An analogous procedure is followed when using o-amidooxybenzyl alcohol. This body crystallizes - as a free base in the form of almost colorless, fine needles, which melt out of focus between 112 and 114 0. It is soluble in water, more easily soluble in alcohol and forms stable salts with acids.

Claims (1)

Patent-Anspruch :Patent claim: Verwendung der durch Reduktion der Nitrooxybenzylalkohole des Patentes 136680 erhältlichen Amidooxybenzylalkohole als photographische Entwickler.Use of the patent by reducing the nitrooxybenzyl alcohols 136680 available amidooxybenzyl alcohols as photographic developers.
DE1901149123D 1901-04-25 1901-04-25 Expired - Lifetime DE149123C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT17454D AT17454B (en) 1901-04-25 1901-08-17 Photographic developer.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE149123T

Publications (1)

Publication Number Publication Date
DE149123C true DE149123C (en)

Family

ID=5673153

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1901149123D Expired - Lifetime DE149123C (en) 1901-04-25 1901-04-25

Country Status (1)

Country Link
DE (1) DE149123C (en)

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