DE634305C - Process for removing photographic layers from nitrocellulose films which are attached by protein preparations of any kind - Google Patents
Process for removing photographic layers from nitrocellulose films which are attached by protein preparations of any kindInfo
- Publication number
- DE634305C DE634305C DEI50184D DEI0050184D DE634305C DE 634305 C DE634305 C DE 634305C DE I50184 D DEI50184 D DE I50184D DE I0050184 D DEI0050184 D DE I0050184D DE 634305 C DE634305 C DE 634305C
- Authority
- DE
- Germany
- Prior art keywords
- attached
- ethylene oxide
- protein preparations
- photographic layers
- nitrocellulose
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/08—Cellulose derivatives
- C08J2301/16—Esters of inorganic acids
- C08J2301/18—Cellulose nitrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Description
Verfahren zum Ablösen photographischer Schichten von Nitrocellulosefolien, die durch Eiweißpräparationen irgendwelcher Art befestigt sind Im nachfolgenden wird ein Verfahren beschrieben, mit welchem eine fest auf einer Nitrocelluloseunterlage haftende Emulsionsschicht in einfacher und rascher Weise unter vollständiger Schonung der Schicht .abgelöst werden kann. Das Verfahren 'ist wertvoll, wenn es sich darum handelt, die Emulsionsschicht auf eine andere Unterlage zu übertragen.Process for stripping photographic layers from nitrocellulose films, which are attached by protein preparations of any kind in the following a method is described with which a firmly on a nitrocellulose pad adherent emulsion layer in a simple and quick manner with complete protection the layer. can be detached. The process' is valuable when it comes to it is about transferring the emulsion layer to another surface.
Erfindungsgemäß wird zur Trennung der Emulsionsschicht von der Nitrocelluloseunterlage eine wässerige Lösung von Reaktionsprodukten aus Äthylenoxyd und primären aliphatischen Aminen verwendet. Die Konzentration der Lösungen, welche zum Ablösen der Emulsionsschicht dienen können, richtet sich nach der Präparation, die zur Aufbringung der Schicht verwendet wurde. Bei besonders fester Haftung wird man mit Lösungen von io % des aus Äthylenoxyd und dem Amin entstehenden Produktes eine glatte Trennung von Schicht und Träger bewerkstelligen können. In den meisten Fällen genügen wesentlich v erdünntere Lösungen. Auch Mischungen der in ihrer Anwendung beanspruchten Produkte, welche aus Äthylenoxyd und verschiedenen primären aliphatischen Aminen entstehen, können verwendet werden.According to the invention, an aqueous solution of reaction products of ethylene oxide and primary aliphatic amines is used to separate the emulsion layer from the nitrocellulose substrate. The concentration of the solutions which can be used to detach the emulsion layer depends on the preparation that was used to apply the layer. If the adhesion is particularly strong, solutions of 10 % of the product formed from ethylene oxide and the amine will be able to achieve a smooth separation of the layer and support. In most cases, much more dilute solutions are sufficient. Mixtures of the products claimed in their application, which arise from ethylene oxide and various primary aliphatic amines, can also be used.
Zur Durchführung des Verfahrens werden z. B. in bekannter Weise gut brauchbare Produkte hergestellt: Beispiele i. io g Stearylamin werden mit io g Äthylenoxyd im Druckgefäß 24 Stunden stehen gelassen. In Abständen von 24 Stunden «-erden j eweils weitere i o g Äthylenoxyd zugegeben, bis eine wasserlösliche, viscose braune Masse entstanden ist.To carry out the method z. B. well in a known manner Usable Products Manufactured: Examples i. 10 g of stearylamine are mixed with 10 g of ethylene oxide left to stand in the pressure vessel for 24 hours. At intervals of 24 hours «- earth j at times a further 10 g of ethylene oxide were added until a water-soluble, viscous brown color Mass has arisen.
2. i i g Monobenzylamin und 24 g Äthylenoxyd läßt man im Autoklaven stehen und erneuert in Abständen von 24 Stunden das Äthylenoxyd dreimal. Das Produkt ist braun, viscos und wasserlöslich.2. i i g of monobenzylamine and 24 g of ethylene oxide are left in the autoclave stand and renew the ethylene oxide three times at intervals of 24 hours. The product is brown, viscous and water-soluble.
3. io g eines Gemisches der aliphatischen Amine, die man durch Reduktion der Kokosfettsäure durch Umsetzen mit Ammoniak er--hält, läßt man 24 Stunden mit i i g Äthylenoxyd stehen und erneuert nach je 24 Stunden das Äthylenoxyd. Die entstandene braune viscose Masse ist wasserlöslich.3. io g of a mixture of the aliphatic amines obtained by reduction the coconut fatty acid obtained by reacting with ammonia is left with for 24 hours i i g ethylene oxide stand and renews the ethylene oxide every 24 hours. The resulting brown viscous mass is soluble in water.
Badet man in einer 5°/oigen Lösung dieser Substanzen einen emulsionierten Nitrocellulosefilm io bis 20 Minuten, so läßt sich die Emulsionsschicht leicht und unverletzt abziehen.If one bathes in a 5% solution of these substances an emulsified one Nitrocellulose film for 10 to 20 minutes, the emulsion layer can be easily and pull off unharmed.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI50184D DE634305C (en) | 1934-07-19 | 1934-07-19 | Process for removing photographic layers from nitrocellulose films which are attached by protein preparations of any kind |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI50184D DE634305C (en) | 1934-07-19 | 1934-07-19 | Process for removing photographic layers from nitrocellulose films which are attached by protein preparations of any kind |
Publications (1)
Publication Number | Publication Date |
---|---|
DE634305C true DE634305C (en) | 1936-08-24 |
Family
ID=7192761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI50184D Expired DE634305C (en) | 1934-07-19 | 1934-07-19 | Process for removing photographic layers from nitrocellulose films which are attached by protein preparations of any kind |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE634305C (en) |
-
1934
- 1934-07-19 DE DEI50184D patent/DE634305C/en not_active Expired
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