DE646516C - Photographic developer, especially for direct color development - Google Patents

Photographic developer, especially for direct color development

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Publication number
DE646516C
DE646516C DEI52514D DEI0052514D DE646516C DE 646516 C DE646516 C DE 646516C DE I52514 D DEI52514 D DE I52514D DE I0052514 D DEI0052514 D DE I0052514D DE 646516 C DE646516 C DE 646516C
Authority
DE
Germany
Prior art keywords
color development
developer
photographic developer
direct color
substances
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
DEI52514D
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 DEI52514D priority Critical patent/DE646516C/en
Application granted granted Critical
Publication of DE646516C publication Critical patent/DE646516C/en
Expired legal-status Critical Current

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Description

Photographischer Entwickler, insbesondere für Direktfarbenentwxcklung Für die photographische Entwicklung wurden bisher Stoffe verwendet, die, abgesehen von wenigen Ausnahmen, zur Gruppe der aromatischen mehrwertigen Oxyverbindungen oder der aromatischen Aminooxy- und Aminoverbindungen gehörten.Photographic developer, especially for direct color development For photographic development, substances have hitherto been used, apart from with a few exceptions, to the group of aromatic polyvalent oxy compounds or the aromatic aminooxy and amino compounds.

Es wurde nun eine neue Klasse von Entwicklersubstanzen aus der Gruppe der aliphatischen und heterocyclischen Verbindungen gefunden, welche die Atomgruppierung -CO-CHNH2. oder- C(OH)=CNH2-enthalten. Es sind also Stoffe, die in Nachbarstellung eine CO- und eine C H N HZ-Gruppe bzw. in der Enolform an zwei doppelt gebundenen Kohlenstoffatomen eine Oxy- und eine Aminogruppe tragen. Die Wasserstoffatome der Aminogruppen können beliebig substituiert sein, beispielsweise durch Allkyl-, Aryl-oder Acylgruppen.A new class of developer substances from the group of aliphatic and heterocyclic compounds has now been found, which has the atom group -CO-CHNH2. or- C (OH) = CNH2- contain. They are therefore substances that have a CO and a CHN HZ group in the adjacent position or, in the enol form, an oxy and an amino group on two double-bonded carbon atoms. The hydrogen atoms of the amino groups can be substituted as desired, for example by alkyl, aryl or acyl groups.

In dieser neuen Gruppe von Entwicklersubstanzen finden sich sowohl langsam arbeitende Entwickler, die erst in ätzalkalischer Lösung wirksam sind, als auch rapid arbeitende Entwickler, die bereits in Gegenwart von Sulfit allein entwickeln. Ein besonderer Vorteil dieser neuen Entwicklersubstanzen besteht darin, däß viele dieser Körper unter bestimmten Bedingungen auch direkt ohne Beigabe einer zweiten Komponente' farbig entwickeln.This new group of developing agents includes both Slow-working developers that are only effective in a caustic solution than also rapidly working developers who develop in the presence of sulfite alone. A particular advantage of these new developer substances is that many this body under certain conditions also directly without the addition of a second one Develop component 'in color.

Wie aus den untenstehenden Beispielen 2 und 3 hervorgeht, hängt die Fähigkeit der Substanzen, farbig zu entwickeln, von der Alkalität des Entwicklers ab. Als aliphatische Vertreter seien beispielsweise genannt: das Diäthylaminoaceton, welches ein schwach wirkender Entwickler ist, der Aminoacetessigester, der Aminobenzoylessigester und ähnliche Körper. Aus der Gruppe der heterocyclischen Substanzen sind besonders hervorzuheben die Derivate der q.-Aminopyrazolone-(5 ), das Hydrazid der o-Aminophthalsäure sowie das 3-Aminoq. - oxo - 2 - iminotetrahydrothiophen und das 3-Amino-¢-oxy-2-oofurandihydrid. Beispiel i 6 g .d-Aminoacetessigester, 2o g Nasulfit sicc., io g Soda sicc., o,5 g Kaliumbromid, i ooo ,ccm Wasser. Der Entwickler entwickelt Gaslichtpapier in braunen Tönen. Beispiel 2 5g i-Phenyl-3-methyl-¢-aminopyrazolon-(5), 2o g Natriumsülfit sicc., i o g Soda sicc., o, 5 g Kaliumbromid, iooo ccm Wasser. Dieser Entwickler ist ein rapid und brillant arbeitender Entwickler für Negative. Beispiel 3 5 g i - p-Chlorphenyl-3-methyl-q.-aminopyrazolon- (5 ), 5 g Natriumsulfit sicc., 0,5 g Kaliumbromid. Dieser Entwickler liefert außer einem Silberbild ein intensiv gelbes Farbstoffbild. Dieses bleibt nach Herauslösen des Silberbildes, z. B. durch Überführen in Halogensilber und Fixieren, in der Schicht zurück.As can be seen from Examples 2 and 3 below, the ability of the substances to develop color depends on the alkalinity of the developer. Examples of aliphatic representatives are: diethylaminoacetone, which is a weak developer, aminoacetoacetic ester, aminobenzoyl acetic ester and similar bodies. From the group of heterocyclic substances, the derivatives of q-aminopyrazolones (5), the hydrazide of o-aminophthalic acid and 3-aminoq should be emphasized in particular. - oxo - 2 - iminotetrahydrothiophene and 3-amino [-oxy-2-oofuran dihydride. Example i 6 g of d-aminoacetoacetic ester, 20 g of nasulfite sicc., 10 g of soda sicc., 0.5 g of potassium bromide, 10000 cc of water. The developer develops gas light paper in brown tones. Example 2 5 g of i-phenyl-3-methyl- [aminopyrazolone- (5)], 20 g of sodium sulphate sicc., 10 g soda sicc., 0.5 g of potassium bromide, 100 cc of water. This developer is a rapid and brilliant developer of negatives. Example 3 5 gi - p-chlorophenyl-3-methyl-q.-aminopyrazolone- (5), 5 g sodium sulfite sicc., 0.5 g potassium bromide. In addition to a silver image, this developer produces an intensely yellow dye image. This remains after removing the silver image, for. B. by converting to halogen silver and fixing, back in the layer.

Claims (1)

PATRNTADISP-RUCH: Photographischer Entwickler, insbesop- dere für i)irektfarbenentwicklung, gekerin-
'@zeiclet.dü@cbeinenGehaltan aliphatischen i`-'':-`.xolischen Substanzen, welche `die"#A#t. mgruppierting - C O - C H N H2 - CNH: - enthalten, 'täts ""Entwicklun2ssubstanz.
PATRNTADISP-RUCH: Photographic developer, especially others for i) direct color development,
'@ zeiclet.dü @ cbeinenGehaltan aliphatic i` - '': - `.xolic substances, which `the"# A # t. mgruppierting - CO - CHN H2 - CNH: - included, Developmental substance.
DEI52514D 1935-06-07 1935-06-08 Photographic developer, especially for direct color development Expired DE646516C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI52514D DE646516C (en) 1935-06-07 1935-06-08 Photographic developer, especially for direct color development

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEI0052514 1935-06-07
DEI52514D DE646516C (en) 1935-06-07 1935-06-08 Photographic developer, especially for direct color development

Publications (1)

Publication Number Publication Date
DE646516C true DE646516C (en) 1937-06-16

Family

ID=25981866

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI52514D Expired DE646516C (en) 1935-06-07 1935-06-08 Photographic developer, especially for direct color development

Country Status (1)

Country Link
DE (1) DE646516C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047618B (en) * 1956-12-18 1958-12-24 Agfa Ag Photographic developer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047618B (en) * 1956-12-18 1958-12-24 Agfa Ag Photographic developer

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