DE558419C - Process for increasing the shelf life of photosensitive halogen silver emulsions - Google Patents

Process for increasing the shelf life of photosensitive halogen silver emulsions

Info

Publication number
DE558419C
DE558419C DEI41627D DEI0041627D DE558419C DE 558419 C DE558419 C DE 558419C DE I41627 D DEI41627 D DE I41627D DE I0041627 D DEI0041627 D DE I0041627D DE 558419 C DE558419 C DE 558419C
Authority
DE
Germany
Prior art keywords
shelf life
increasing
halogen silver
emulsions
silver emulsions
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
DEI41627D
Other languages
German (de)
Inventor
Dr Walther Zehlke
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 DEI41627D priority Critical patent/DE558419C/en
Application granted granted Critical
Publication of DE558419C publication Critical patent/DE558419C/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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Description

Verfahren zum Erhöhen der Haltbarkeit lichtempfindlicher Halogensilberemulsionen Es ist bekannt, daß die Haltbarkeit lichtempfindlicher Halogensilberemulsionen durch verschiedene Zusätze erhöht «-erden kann. So werden die Emulsionen zu diesem Zwecke beispielsweise mit Thiazolverbindungen, den verschiedenartigsten Harnstoffabkömmlingen und Säureimiden versetzt.Process for increasing the shelf life of photosensitive halogen silver emulsions It is known that the durability of photosensitive halogen silver emulsions by various additives can be increased. So are the emulsions for this purpose for example with thiazole compounds, the most diverse urea derivatives and acid imides added.

Es wurde nun gefunden, daß die Haltbarkeit sowohl der Ammoniakemulsionen wie der Kochemulsionen verbessert wird, wenn man ihnen während der Herstellung oder vor dem Vergießen sekundäre oder tertiäre aromatische Amine oder ihre Abkömmlinge zusetzt. Die erhoffte Haltbarkeit wird daran erkannt, daß man die Klarheit und Empfindlichkeit von photographischen Platten, die mit der mit dem Zusatz versehenen Emulsion begossen sind, in gewissen Zeitabständen vergleicht mit Platten, welche mit derselben Emulsion, aber ohne den Haltbarkeitszusatz, begossen sind. Beispiel i ioo kg einer gießfertigen Emulsion werden mit 5 g Diphenylamin, am besten in Alkohol gelöst, versetzt. Die mit der Emulsion begossenen Platten werden unter den gleichen Bedingungen gelagert wie Platten, die mit derselben Emulsion, aber ohne Diphenylaminzusatz hergestellt worden sind. Schon gleich bei Beginn des Vergleichsversuches hat die mit Diphenylaminzusatz begossene Platte bessere Klarheit bei gleicher Empfindlichkeit; nach bestimmten Lagerungszeiten zeigt sich der Unterschied noch deutlicher. Beispiel e ioo kg einer gießfertigen Emulsion werden mit einer alkoholischen Lösung von io g Triphenylamin versetzt. Ähnlich wie bei Beispiel i zeigen Platten mit Triphenylaminzusatz bessere Haltbarkeit. Beispiel 3 Statt Diphenylamin (Beispiel i) können Methyldiphenylamin oder Pheny 1-p-toluidin genommen werden. Der Arbeitsgang ist der gleiche wie bei Beispiel i.It has now been found that the shelf life of both the ammonia emulsions how the cooking emulsions will be improved if you look at them during manufacture or secondary or tertiary aromatic amines or their derivatives prior to potting clogs. The expected durability is recognized by the fact that one has the clarity and sensitivity of photographic plates coated with the emulsion provided with the additive are compared at certain time intervals with plates made with the same emulsion, but without the durability additive, are watered. Example ioo kg of a ready-to-cast 5 g of diphenylamine, preferably dissolved in alcohol, are added to the emulsion. the Plates coated with the emulsion are stored under the same conditions like plates made with the same emulsion but without the addition of diphenylamine have been. Right at the beginning of the comparative experiment, the one with the addition of diphenylamine coated plate better clarity with the same sensitivity; according to certain Storage times shows the difference even more clearly. Example e 100 kg one The ready-to-pour emulsion is mixed with an alcoholic solution of 10 g triphenylamine offset. Similar to example i, plates with added triphenylamine show better Durability. Example 3 Instead of diphenylamine (example i), methyldiphenylamine can be used or pheny 1-p-toluidine can be taken. The process is the same as for Example i.

Claims (1)

PATENTANSPRUCH: Verfahren zum Erhöhen der Haltbarkeit lichtempfindlicher Halogensilber-Gelatine-Emulsionen, dadurch gekennzeichnet, daß der Emulsion sekundäre oder tertiäre aromatische Amine zugesetzt werden.PATENT CLAIM: Method for increasing the shelf life of photosensitive Halosilver gelatin emulsions, characterized in that the emulsion is secondary or tertiary aromatic amines are added.
DEI41627D 1931-05-21 1931-05-21 Process for increasing the shelf life of photosensitive halogen silver emulsions Expired DE558419C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI41627D DE558419C (en) 1931-05-21 1931-05-21 Process for increasing the shelf life of photosensitive halogen silver emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI41627D DE558419C (en) 1931-05-21 1931-05-21 Process for increasing the shelf life of photosensitive halogen silver emulsions

Publications (1)

Publication Number Publication Date
DE558419C true DE558419C (en) 1932-09-07

Family

ID=7190586

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI41627D Expired DE558419C (en) 1931-05-21 1931-05-21 Process for increasing the shelf life of photosensitive halogen silver emulsions

Country Status (1)

Country Link
DE (1) DE558419C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148866B (en) * 1959-05-13 1963-05-16 Wolfen Filmfab Veb Process for reducing the viscosity of photographic silver-halide gelatin emulsions
DE1295363B (en) * 1963-07-24 1969-05-14 Fuji Photo Film Co Ltd Light sensitive photographic recording material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148866B (en) * 1959-05-13 1963-05-16 Wolfen Filmfab Veb Process for reducing the viscosity of photographic silver-halide gelatin emulsions
DE1295363B (en) * 1963-07-24 1969-05-14 Fuji Photo Film Co Ltd Light sensitive photographic recording material

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