DE714714C - Process for hardening proteins - Google Patents
Process for hardening proteinsInfo
- Publication number
- DE714714C DE714714C DEI58324D DEI0058324D DE714714C DE 714714 C DE714714 C DE 714714C DE I58324 D DEI58324 D DE I58324D DE I0058324 D DEI0058324 D DE I0058324D DE 714714 C DE714714 C DE 714714C
- Authority
- DE
- Germany
- Prior art keywords
- hardening
- proteins
- melting point
- layers
- sensitivity
- 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
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
- G03C1/30—Hardeners
- G03C1/301—Aldehydes or derivatives thereof, e.g. bisulfite addition products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H1/00—Macromolecular products derived from proteins
- C08H1/02—Protein-aldehyde condensates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L89/00—Compositions of proteins; Compositions of derivatives thereof
- C08L89/04—Products derived from waste materials, e.g. horn, hoof or hair
- C08L89/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin, e.g. gelatin
-
- 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
- G03C1/30—Hardeners
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Dermatology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Colloid Chemistry (AREA)
- Paper (AREA)
- Peptides Or Proteins (AREA)
- Laminated Bodies (AREA)
Description
Verfahren zum Härten von Eiweißstoffen Es ist bekannt, photographische Halogensilberschichten mit Aldehyden zu härten. Als härtender Aldehyd wird vor allen Dingen Fornialdehyd gebraucht. Weiterhin sind als härtende Aldehyde bekanntgeworden: Glyoxal, Dibromacrolein, Oxyaldehyde. Bei Zusatz dieser Aldehyde zur photographisclicti Emulsion tritt jedoch, vor allem, wenn größere Mengen verwendet werden, um eine hohe Härtung zu erzielen, ein Absinken der Schwellenempfindlichkeit ein.Process for hardening proteins It is known, photographic To harden halogen silver layers with aldehydes. As a hardening aldehyde is above all Things formaldehyde used. Furthermore, the following have become known as hardening aldehydes: Glyoxal, dibromoacrolein, oxyaldehydes. With the addition of these aldehydes to the photographisclicti Emulsion occurs, however, especially when larger amounts are used to make a To achieve high hardening, a decrease in threshold sensitivity.
Es wurde gefunden, daß man mit alipliatiscll"en Aldehydcarbonsäureti und deren Salzen härten kann unter gleichzeitiger Erhöhung der Empfindlichkeit, so daß der bei den bisher bekannten Härtungsmitteln stets aufgetretene Nachteil der Empfindlichkeitsverringerung behoben wird. Dabei erzielt man eine für Negativschichten durchaus ausreichende Härtung. Als Beispiel für die genannte Körperklasse seien beispielsweise genannt Glyoxylsäure, Formylacrylsäure und deren Salze.It has been found that with alipliatiscll "en Aldehydcarbonsäureti and their salts can harden while increasing the sensitivity, so that the disadvantage always occurred with the previously known hardeners the decrease in sensitivity is corrected. One achieves one for negative layers quite sufficient hardening. As an example for the body class mentioned are for example, called glyoxylic acid, formyl acrylic acid and their salts.
Die Anwendung der neuen Härtungsmittel erfolgt nach den in der photographischen Praxis üblichen Methoden. Man gibt sie als Gießzusatz zu der aufgeschmolzenen Emulsion kurz vor dem Vergießen. Man kann auch die fertigbegossenen Schichten _iin noch unentwickelten oder im entwickelten Zustand durch- Behandlung, mit einem Nachbad Bärten oder dem Entwickler selbst die härtenden Verbindungen zusetzen. Es ist dabei gleichgültig, auf welcher Unterlage sich die photographisclien Halogensilberschichten befinden, sei es Glas,. Papier, Cellulose bzw. Cellulosederivate oder Metall. Die Anwendung der neuen Härtungs.mittel beschränkt sich nicht nur auf die photcigraphische Halogensilberschicht, sondern es können auch Unter-, Über- oder Rückgüsse, ferner Zwischenschichten und Präparationsschichtenaus Gelatine oder anderen Eiweißkörpern bzw. Mischungen solcher mit anderen Kolloiden damit gehärtet werden. Die Mengen der anzuwendenden Härtungsmittel schwanken etwas, je nachdem, welchen Schmelzpunkt man erzielen will. Im allgemeinen beträgt die Menge 5o bis 5ooomg auf i kg in Bezug auf Gelatine etwa ioo"'oiger Lösung, doch ist die Verwendungsmöglichkeit der Härtungsmittel nicht auf diesen Mengenbegrenzt.The new hardeners are used in accordance with those used in photographic applications Practice usual methods. They are added to the melted emulsion as a pouring additive just before potting. The finished cast layers can also be used in undeveloped layers or in the developed state through-treatment, with a post-bath beards or the Developers add the hardening compounds themselves. It doesn't matter on which base are the photographic halogen silver layers, be it glass. Paper, cellulose or Cellulose derivatives or metal. The application of the new Härtungs.mittel is not limited to the photcigraphic Halogen silver layer, but also under-, over- or back-pouring, furthermore Interlayers and preparation layers made from gelatine or other protein bodies or mixtures of such with other colloids are hardened with it. The quantities the hardening agents to be used vary somewhat, depending on the melting point one wants to achieve. Generally the amount is 50 to 5ooomg per 1kg in terms of weight on gelatine about 100% solution, but hardening agents can be used not limited to these quantities.
Beispiel i t kg einer ' Gelatüiehalogensilbercmul;sion für Negativzwecke, deren Gelatinekon7eiitration etwa 8 bis 9% beträgt und die mit Farbstoffen optisch sensibilisiert ist, wird mit Zoo mg Formylacrylsäure nach dein Aufschmelzen der Emulsion versetzt und in üblicher Weise vergossen, Der Schmelzpunkt der getrockneten Schicht beträgt 3G@, während der Schmelzpunkt der ungehärte.ten Schicht 33' beträgt. 13er ,Empti#ndlichkeitszuwachs beträgt etwa 750"o. Im -Laue der Lagerung härtet die Schicht etwas nach.Example in kg of a gelatine halogen silver ion for negative purposes, whose gelatin concentration is about 8 to 9% and those with dyes are optical is sensitized, zoo mg of formylacrylic acid is added after melting the Emulsion added and poured in the usual way, the melting point of the dried Layer is 3G @, while the melting point of the uncured layer is 33 '. 13, sensitivity increase is about 750 "o. Hardens during storage the shift a little.
Beisjz=ie1 2 i kg einer in bezug auf Gelatine 8- :bis 9o'oigen Halog-ensilberemulsiön. die .für Röntgenaufnahmen bestimmt ist, wird mit etwa 40o mg neutralisierter Glyoxylsäure versetzt und darauf vergossen. Der Empfindlichkeitszuwachs beträgt 5o bis 7 5 @-o. Der Schnielzpunkt der getrockneten Schicht ist 34", während der Schmelzpunkt der umgehärteten Schicht nur 32° beträgt. Im Laufe der Lagerung erhöht sich der Schmelzpunkt etwas.Beisjz = ie1 2 i kg of a halogen silver emulsion of 8: to 90% in relation to gelatine. which. is intended for X-rays, is neutralized with about 40o mg glyoxylic acid offset and potted on it. The increase in sensitivity is 5o to 7 5 @ -o. The melting point of the dried layer is 34 ", while the melting point is recured layer is only 32 °. The melting point increases in the course of storage some.
Claims (1)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI58324D DE714714C (en) | 1937-06-20 | 1937-06-20 | Process for hardening proteins |
GB20219/37A GB499648A (en) | 1937-06-20 | 1937-07-21 | Improved process of hardening photographic silver halide emulsion layers and other layers containing protein |
FR839156D FR839156A (en) | 1937-06-20 | 1938-06-10 | Process for the hardening of albuminous substances |
US213449A US2154895A (en) | 1937-06-20 | 1938-06-13 | Process of hardening protein substances |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI58324D DE714714C (en) | 1937-06-20 | 1937-06-20 | Process for hardening proteins |
GB20219/37A GB499648A (en) | 1937-06-20 | 1937-07-21 | Improved process of hardening photographic silver halide emulsion layers and other layers containing protein |
Publications (1)
Publication Number | Publication Date |
---|---|
DE714714C true DE714714C (en) | 1941-12-05 |
Family
ID=25982007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI58324D Expired DE714714C (en) | 1937-06-20 | 1937-06-20 | Process for hardening proteins |
Country Status (4)
Country | Link |
---|---|
US (1) | US2154895A (en) |
DE (1) | DE714714C (en) |
FR (1) | FR839156A (en) |
GB (1) | GB499648A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB586782A (en) * | 1944-11-08 | 1947-03-31 | Eastman Kodak Co | Improvements relating to photographic materials |
US2441440A (en) * | 1945-01-25 | 1948-05-11 | Du Pont | Silver halide photographic emulsions of enhanced light sensitivity |
US2440954A (en) * | 1945-08-23 | 1948-05-04 | Du Pont | Process for eliminating stain from color-yielding elements by treatment with aromatic aldehydes containing an acyl group |
US3012886A (en) * | 1954-05-10 | 1961-12-12 | Harry H Lerner | Emulsion coating and method of preparation |
BE627013A (en) * | 1962-01-11 |
-
1937
- 1937-06-20 DE DEI58324D patent/DE714714C/en not_active Expired
- 1937-07-21 GB GB20219/37A patent/GB499648A/en not_active Expired
-
1938
- 1938-06-10 FR FR839156D patent/FR839156A/en not_active Expired
- 1938-06-13 US US213449A patent/US2154895A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR839156A (en) | 1939-03-28 |
US2154895A (en) | 1939-04-18 |
GB499648A (en) | 1939-01-23 |
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