DE448775C - Gelatine for light-sensitive silver salt emulsions - Google Patents

Gelatine for light-sensitive silver salt emulsions

Info

Publication number
DE448775C
DE448775C DEI28333D DEI0028333D DE448775C DE 448775 C DE448775 C DE 448775C DE I28333 D DEI28333 D DE I28333D DE I0028333 D DEI0028333 D DE I0028333D DE 448775 C DE448775 C DE 448775C
Authority
DE
Germany
Prior art keywords
gelatine
silver salt
light
sensitive silver
salt 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
DEI28333D
Other languages
German (de)
Inventor
Dr Walter Dieterle
Dr Otto Matthies
Dr Josef Reitstoetter
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 DEI28333D priority Critical patent/DE448775C/en
Priority to GB12457/27A priority patent/GB272867A/en
Priority to FR33682D priority patent/FR33682E/en
Application granted granted Critical
Publication of DE448775C publication Critical patent/DE448775C/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
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
    • G03C1/047—Proteins, e.g. gelatine derivatives; Hydrolysis or extraction products of proteins

Landscapes

  • 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

Gelatine für lichtempfindliche Silbersalzemulsionen. In dem Patent 437 900 ist ein Verfahren zur Herstellung von lichtempfindlichen Silhersalzemulsionen beschrieben, das gekennzeichnet ist durch die Verwendung von Stoffen im F-mulsioisansatz, die sich aus Proteinen durch Elektrodialyse abscheidee lassen.Gelatin for light-sensitive silver salt emulsions. In patent 437,900 a method for the production of photosensitive Silhersalzemulsionen is described, which is characterized blank by the use of substances in the F-mulsioisansatz that abscheidee from proteins by electrodialysis.

Es hat sich nun gezeigt, daß diese elektrodialvtisch gewonnenen Spaltungsstoffe von Eiweißkörpern mit Vorteil als Zusatz bei der Herstellung von Gelatine verwendet werden, welche bestimmt ist zur Erzeugung von kochempfindlichen photographischen Silbersalzemulsionen. Die Elektrodialyse ist bereits benutzt worden zur Herstellung, insbesondere zur Reinigung von Gelatine, z. B. in dem Verfahren des Patents 293 188. Im Gegensatz hierzu beruht das Verfahren des Patents .I37 900 und der vorliegenden Zusatzerfindung auf der Erkenntnis, daß gerade die durch die Elektrodialvse aus der Proteinlösung herausgeschafften, am Anoden- und Kathodenraum angereicherten Spaltungsstoffe eine hervorragende empfindlichkeitssteigernde Einwirwirkung auf photographische Silbersalzemulsionen haben.It has now been shown that these electrodially obtained cleavage substances of protein bodies are advantageously used as an additive in the production of gelatine, which is intended for the production of photographic silver salt emulsions that are sensitive to cooking. Electrodialysis has already been used for the production, in particular for the purification of gelatin, e.g. B. in the method of the patent 293 188. In contrast to this, the method of the patent .I37 900 and the present additional invention is based on the knowledge that precisely the cleavage substances removed from the protein solution by the electrodialysis and enriched in the anode and cathode compartment have an excellent sensitivity-increasing effect Have exposure to silver salt photographic emulsions.

Die elektrodialytischen Spaltungsstoffe von Proteinen werden dem für die Herstellung von Emulsionsgelatine bestimmten Sude zugesetzt, oder fertige Handelsgelatine, welche natürlich frei sein mtiß von empfindlichkeitsschädlichen Verunreinigungen, wird durch einen nachträglichen Zusatz von elektrodialytischen Proteinspaltstoffen zu kochempfindlicher Gelatine umgearbeitet. Dies kann geschehen, indem die Gelatine mit Wasser aufgeschmolzen und mit dem Zusatz gut durchgemischt wird oder indem man die Gelatine in Lösungen des Zusatzes badet oder quellen läßt. Danach kann sie in üblicher Weise wieder getrocknet oder auch gleich in feuchtem Zustande «-eiterverarbeitet werden. Menge und Art des Zusatzes an elektrodialytischen Proteinspaltstoffen richtet sich nach der Art der photographischen Emulsionen, für welche die Gelatine bestimmt ist.The electrodialytic cleavage substances of proteins are used for the production of emulsion gelatine added to certain brews, or ready-made commercial gelatine, which must of course be free of impurities that are harmful to the sensitivity, is made by the subsequent addition of electrodialytic protein cleavage substances converted into gelatine that is sensitive to cooking. This can be done by adding the gelatin melted with water and mixed well with the additive or by bathes or swells the gelatin in solutions of the additive. Then it can be in Usually dried again or processed immediately in a moist state will. Amount and type of additive is aimed at electrodialytic protein breakdowns according to the type of photographic emulsions for which the gelatin is intended is.

Claims (3)

PATENTANSPRÜCIIE: I. Gelatine für lichtempfindliche Siibersalzemulsionen, gekennzeichnet durch einen Gehalt an Spaltstoffen von Proteinen gemäß Patent 437 900. PATENT CLAIM: I. Gelatine for light-sensitive silver salt emulsions, characterized by a content of fissile substances from proteins according to patent 437 900 2. Verfahren zur Umarbeitung von gewöhnlicher Handelsgelatine in solche für lichtempfindliche Silbersalzemulsionen, dadurch gekennzeichnet, daß die Gelatine nachträglich _ einen Zusatz von Proteinspaltstoffen gemäß Patent 437 9oo erhält. 2. Procedure for making over ordinary Commercial gelatine into those for photosensitive silver salt emulsions, characterized in that the gelatine subsequently _ an addition of protein breakdown substances according to patent 437 9oo receives. 3. Ausführungsform des Verfahrens nach Anspruch 2, dadurch gekennzeichnet, daß trockene Gelatine in Lösungen von Proteinspaltstoffen gemäß Patent 437 900 gebadet werden.3. Embodiment of the method according to claim 2, characterized in that that dry gelatin bathed in solutions of protein breakdowns according to patent 437 900 will.
DEI28333D 1926-06-17 1926-06-17 Gelatine for light-sensitive silver salt emulsions Expired DE448775C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEI28333D DE448775C (en) 1926-06-17 1926-06-17 Gelatine for light-sensitive silver salt emulsions
GB12457/27A GB272867A (en) 1926-06-17 1927-05-09 Improvements in gelatine for light-sensitive silver salts emulsions
FR33682D FR33682E (en) 1926-06-17 1927-06-15 Process for preparing photographic emulsions of silver salts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI28333D DE448775C (en) 1926-06-17 1926-06-17 Gelatine for light-sensitive silver salt emulsions

Publications (1)

Publication Number Publication Date
DE448775C true DE448775C (en) 1927-08-27

Family

ID=6012329

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI28333D Expired DE448775C (en) 1926-06-17 1926-06-17 Gelatine for light-sensitive silver salt emulsions

Country Status (3)

Country Link
DE (1) DE448775C (en)
FR (1) FR33682E (en)
GB (1) GB272867A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699391A (en) * 1950-01-11 1955-01-11 Gen Aniline & Film Corp Synthetic polypeptides of alpha-amino acids as restrainers in photographic emulsions

Also Published As

Publication number Publication date
GB272867A (en) 1927-12-08
FR33682E (en) 1928-11-29

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