DE473285C - Process for the production of bleachable layers for photographic purposes - Google Patents

Process for the production of bleachable layers for photographic purposes

Info

Publication number
DE473285C
DE473285C DEW78340D DEW0078340D DE473285C DE 473285 C DE473285 C DE 473285C DE W78340 D DEW78340 D DE W78340D DE W0078340 D DEW0078340 D DE W0078340D DE 473285 C DE473285 C DE 473285C
Authority
DE
Germany
Prior art keywords
salts
layers
replaced
bleachable
production
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
DEW78340D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEW78340D priority Critical patent/DE473285C/en
Application granted granted Critical
Publication of DE473285C publication Critical patent/DE473285C/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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/02—Direct bleach-out processes; Materials therefor; Preparing or processing such materials

Description

Verfahren zur Herstellung ausbleichfähiger Schichten für photographische Zwecke In der Praxis der Farbenphotographie nach dem Ausbleichverfahren fehlt es an Farbstoffen, die für diese Zwecke besonders geeignet sind. Die hierfür vorgeschlagenen Farbstoffe besitzen entweder nicht genügend hohe Lichtempfindlichkeit, oder sie zeigen den Übelstand der Phototropie, oder sie lassen sich nicht fixieren.Process for the production of bleachable layers for photographic applications Purposes In the practice of color photography after the bleaching process it is lacking of dyes that are particularly suitable for these purposes. The proposed for this Dyes either do not have a high enough sensitivity to light, or they do show the deficiency of phototropy, or they cannot be fixed.

Es wurde nun gefunden, daß die Salze des Alphaoxyglutacondial@dehyd;dianils in befriedigender Weise den Ansprüchen des Verfahrens genügen. Die Sensibilisierung und Fixierung dieser Farbstoffe geschieht nach bekannten Methoden.It has now been found that the salts of Alphaoxyglutacondial @ dehyd; dianils meet the requirements of the method in a satisfactory manner. The awareness and these dyes are fixed by known methods.

Beispiel Eine 4prozentige Collodiumlösung wird mit einer o,5prozentigen alkoholischen Lösung von Alphaoxyglutaoondialdehyddianilch'lorhydrat bis zur kräftigen Rotfärbung versetzt und .nach Zugabe von etwas Eisessig auf barytiertes Papier gestrichen. Nach dem Trocknen wird ,durch 5 Minuten langes Einlegen in eine iprozentige Lösung von Paramethoxypropenylbenzol in Petroläther sensibilisiert. Die Seneibilisierung geschieht unter Vermeidung vom .hellem Tageslicht. Die so gefärbten und sensibilisierten Schichten bleichen nun am Licht .sehr :schnell aus. In obigem Beispiel kann man die Salze des Alphaoxyglutacondialdehyddianils durch die Salze solcher Farbstoffe ersetzen, bei welchen i. derAlphaoxyglutacondiald:ehydrest durch einen entsprechenden homologen oder substituierten Rest ersetzt ist, a. die Anilreste durch die entsprechenden Reste iso- oder heterozyklischer primärer Amine, die zur Salzbildung befähigt sind, ersetzt sind.Example A 4 percent collodion solution is mixed with a 0.5 percent alcoholic solution of Alphaoxyglutaoondialdehyddianilch'lorhydrat to strong The red color was added and, after adding a little glacial acetic acid, it was painted on baryta-coated paper. After drying, by soaking for 5 minutes in an Ipercent solution Sensitized by paramethoxypropenylbenzene in petroleum ether. The sensitization happens while avoiding bright daylight. Those so colored and sensitized Layers now fade in the light .very: quickly. In the example above you can the salts of alphaoxyglutacondialdehyde dianil by the salts of such dyes replace, for which i. derAlphaoxyglutacondiald: ehydrest with a corresponding homologous or substituted radical is replaced, a. the anile residues by the corresponding Residues of isocyclic or heterocyclic primary amines which are capable of salt formation, are replaced.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung ausbleichfähiger Schichten für photographische Zwecke, dadurch gekennzeichnet, daß Schichten aus geeignetem Material, wie Gelatine, Collodium usw., mit Salzen des Alphaoxyglutacondialdehyddianils angefärbt werden. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Salze des Alphaoxyglutacondialdehyddianils durch die Salze solcher Farbstoffe ersetzt werden, bei welchen der Alphaoxyglutacondialdlehydrest durch einen ,entsprechenden homologen oder substituierten Rest ersetzt ist. 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Salze des Alphaoxyglutacondialdehyd,dianils durch die Salze solcher Farbstoffe ersetzt werden, bei welchen die Anilreste durch die entsprechenden Reste isa- oder heterozyklischer primärer Amine, die zur Salzbildung befähigt sind, ersetzt sind.PATENT CLAIMS: i. Process for the production of bleachable layers for photographic purposes, characterized in that layers of suitable Material such as gelatin, collodion, etc., with salts of alphaoxyglutacondialdehyde dianil to be stained. a. Method according to claim i, characterized in that the Salts of Alphaoxyglutacondialdehyddianil replaced by the salts of such dyes be, in which the Alphaoxyglutacondialdlehydrest by a, corresponding homologous or substituted radical is replaced. 3. The method according to claim i, characterized characterized in that the salts of alphaoxyglutacondialdehyde, dianils by the salts those dyes in which the anil radicals are replaced by the corresponding Residues of isa- or heterocyclic primary amines which are capable of salt formation, are replaced.
DEW78340D 1928-01-25 1928-01-26 Process for the production of bleachable layers for photographic purposes Expired DE473285C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW78340D DE473285C (en) 1928-01-25 1928-01-26 Process for the production of bleachable layers for photographic purposes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEW0078340 1928-01-25
DEW78340D DE473285C (en) 1928-01-25 1928-01-26 Process for the production of bleachable layers for photographic purposes

Publications (1)

Publication Number Publication Date
DE473285C true DE473285C (en) 1929-03-13

Family

ID=26003128

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW78340D Expired DE473285C (en) 1928-01-25 1928-01-26 Process for the production of bleachable layers for photographic purposes

Country Status (1)

Country Link
DE (1) DE473285C (en)

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