DE353233C - Process to increase the softness and elasticity of nitrocellulose-containing plastics - Google Patents

Process to increase the softness and elasticity of nitrocellulose-containing plastics

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Publication number
DE353233C
DE353233C DE1920353233D DE353233DD DE353233C DE 353233 C DE353233 C DE 353233C DE 1920353233 D DE1920353233 D DE 1920353233D DE 353233D D DE353233D D DE 353233DD DE 353233 C DE353233 C DE 353233C
Authority
DE
Germany
Prior art keywords
nitrocellulose
elasticity
softness
increase
acetals
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
DE1920353233D
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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.)
CHEM FAB VORM WEILER TER MEER
Original Assignee
CHEM FAB VORM WEILER TER MEER
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 CHEM FAB VORM WEILER TER MEER filed Critical CHEM FAB VORM WEILER TER MEER
Application granted granted Critical
Publication of DE353233C publication Critical patent/DE353233C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/06Ethers; Acetals; Ketals; Ortho-esters

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Paints Or Removers (AREA)

Description

Verfahren zur Erhöhung der Weichheit und .Elastizität nitrozellulosehaltiger Kunststoffe. Als Weichhaltungsimittel für nitrozelluloselialtige Kunststoffe (Filme, Kunstleder usw.) wurden bisher fast nur Ester venvvendet. tll)erraschien:der@veise hat sich nun gezeigt, :daß auch Azetale, sofern sie einen, gienügend hohen Siedepunkt und niederen Schmelzpunkt besitzen, für .den genannten Zweck hervorragend g2.eignet sind, obwohl sie den Sauerstoff nur in wenig aktiver, ätherartiger Bindung enthalten und demientspnechend -ihr Lösungsvermögen für Nitrozellulose nicht groß ist. Insbesondere kommen die Azetale des Azetalrl.ehyds mit Benzylalkohol und seinen Homologen in Betracht Die guten Eigenschaften dieser Produkte ,waren um so weniger zu. :erwarten, als die früher bereits als Lösungsmittel bzw. Kamp-f erersatzmittel vorgeschlagenen ei:nrfachen Äther des Benzylalkohols sich als praktisch unbrauchbar herausgestellt .haben. Die Verwendung leicht herstellbarer ätherartiger Verbindungen, welche bei auch Im übrigen geeigneten physikalischen Eigen.schadten ein: hinreichendes Lösungsvermögen besitzen, bedeutet einen technischlen F artscihritt, besonders, :da :die Azetale auch infolge ihrer großen Beständigkeit den bisher verwendeten Weichhaltungsmitteln überlegen sind.Process to increase the softness and elasticity of plastics containing nitrocellulose. As softeners for nitrocellulose-type plastics (films, artificial leather, etc.), almost only esters have been used up to now. tll) surprise: it has now been shown that acetals, too, provided they have a sufficiently high boiling point and low melting point, are excellently suited for the stated purpose, although they are only slightly more active and ethereal in oxygen Contain binding and dementspnechend - their dissolving power for nitrocellulose is not great. In particular, the acetals of acetaldehyde with benzyl alcohol and its homologues come into consideration. The good properties of these products were all the less good. : expect when the simple ethers of benzyl alcohol, which were previously proposed as solvents or as a substitute for combatants, have proven to be practically unusable. The use of ethereal compounds that are easy to prepare, which have adequate dissolving power in the case of other suitable physical properties, means a technical step, especially because the acetals are also superior to the softeners used so far because of their great resistance.

Inder amerikanischen Patentschrift 559823 ,ist die Herstellung zelluloidartigerMassen unter Verwendung von Gemischen beschrieblen, welche neben zahlreichen anderen Verbindungen auch Azetalie der .gewöhnlichen Alkohole der iFettrei#he enthalten können. Hieraus war über das Verhalten von Azetalen an sich, namentlich von solchen, -die :sich von höhermolekilaren und fettaromatischen Alkolialeii ableiten, nichts zu entnehmen. Es ist nicht möglich, mit den erwähnten Gemischen Massen herzustellen, die an Beständigkeit, Festigkeit und -Elastizität den unter Zusatz fettaromatischer Azetale erhältilchen an die Seite gestellt werden können.In U.S. Patent 559823, the manufacture of celluloid-like masses is described using mixtures which, in addition to numerous other compounds may also contain acetals of the common alcohols of the fat series. From this was about the behavior of acetals per se, especially of those -the: themselves derive from higher molecular weight and fatty aromatic alcohols, nothing to be found. It is not possible to use the mixtures mentioned to produce compounds that are less resistant, Strength and elasticity obtained with the addition of fatty acetals can be put aside.

Beispiel. 8o Teile Kollodiumwolle werden in einem Gemisch von 26o Teilern Azeton, 26o Teilen Alkohol, Zoo Teilen Benzol und ioo Teilen Amylazetat aufgelöst und hierzu ioo Teile des Azetals aus Azetaldehyd und Benzylälkohol gegeben. Durch .Ausgießen :der Lösung und die übliche Weiterbehandlung erhält man Filme von vorzüglicher Weichheit ,und Elastizität.Example. 8o parts collodion wool are mixed in a 26o Parts acetone, 26o parts alcohol, zoo parts benzene and 100 parts amyl acetate dissolved and added to this 100 parts of the acetal from acetaldehyde and benzyl alcohol. By pouring out the solution and the usual further treatment, films are obtained from excellent softness and elasticity.

An Stelle des Azetals ,aus Benzylalkohol kann auch das aus :dem @Gemisch :der isom.eren Xylylalkohole und Azetaldehyd gewonnene Produkt in gleicher Weise verwendet werden.Instead of the acetal, benzyl alcohol can also be made from: the @ mixture : the isomeric xylyl alcohols and acetaldehyde obtained in the same way be used.

@Das Benzylazetal ist ein. Öl vom Siedepunkt i98° unter 2o mm Druck. Die is:omeren Xylylazetale sieden unter gleichen Bedingungen etwa i#:2' höher.@The benzyl acetal is a. Oil with a boiling point of 98 ° under 20 mm pressure. The is: omeren xylyl acetals boil about i #: 2 'higher under the same conditions.

Claims (1)

PATENT-ANsPRUCFI: Verfahren zur Erhöhung der Weichheit iund Elastizität nitroeellulosehaltiger Kunststoffe, :darin ,bes ehend, :daß man Nitrozellulose unter Zusatz von Azetalen fettaromatischer Alkohole verarbeitet.PATENT APPLICATION: Process to increase softness and elasticity Nitrocellulose-containing plastics,: in it, considering: that one under Nitrocellulose Addition of acetals of fatty alcohols processed.
DE1920353233D 1920-04-04 1920-04-04 Process to increase the softness and elasticity of nitrocellulose-containing plastics Expired DE353233C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE353233T 1920-04-04

Publications (1)

Publication Number Publication Date
DE353233C true DE353233C (en) 1922-05-15

Family

ID=6280615

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1920353233D Expired DE353233C (en) 1920-04-04 1920-04-04 Process to increase the softness and elasticity of nitrocellulose-containing plastics

Country Status (1)

Country Link
DE (1) DE353233C (en)

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