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 kind

Info

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
Application number
DEI50184D
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.)
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 DEI50184D priority Critical patent/DE634305C/en
Application granted granted Critical
Publication of DE634305C publication Critical patent/DE634305C/en
Expired legal-status Critical Current

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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)

PATENTANSPRÜCHE: i. Verfahren zum Ablösen photographischer Schichten von Nitrocellulosefolien, die durch Eiweißpräparationen irgendwelcher Art befestigt sind, dadurch gekennzeichnet, daß der Schichtträger mit wässerigen Lösungen -von Reaktionsprodukten aus Äthyleneyd und primären aliphatischen Aminen behandelt wird. PATENT CLAIMS: i. Process for peeling off photographic layers of nitrocellulose films, which are attached by protein preparations of some kind are, characterized in that the support with watery Solutions of reaction products from ethylene hydrate and primary aliphatic amines is treated. 2. Verfahren nach @AnsprVch r, dadurzU-gekennzeichnet, daß das Reäktionsproc3@tü aus Äthylenoxyd und einem. aromä:ts,h'' substituierten aliphatischen Amin benutzt wird. 2. Method according to @AnsprVch r, dadurzU-marked that the Reäktionsproc3 @ tü from ethylene oxide and one. aromä: ts, h '' substituted aliphatic amine is used will. 3. Verfahren nach Anspruch r, dadurch gekennzeichnet, daß Produkte aus Äthylenoxyd und Mischungen von aliphatischen primären Aminen verwendet werden.3. The method according to claim r, characterized in that products made of ethylene oxide and mixtures of aliphatic primary amines can be used.
DEI50184D 1934-07-19 1934-07-19 Process for removing photographic layers from nitrocellulose films which are attached by protein preparations of any kind Expired DE634305C (en)

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)

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