DE527197C - Process for the preparation of alkyl cellulose derivatives which are not swellable or difficult to dissolve in water and structures thereof - Google Patents

Process for the preparation of alkyl cellulose derivatives which are not swellable or difficult to dissolve in water and structures thereof

Info

Publication number
DE527197C
DE527197C DEF58896D DEF0058896D DE527197C DE 527197 C DE527197 C DE 527197C DE F58896 D DEF58896 D DE F58896D DE F0058896 D DEF0058896 D DE F0058896D DE 527197 C DE527197 C DE 527197C
Authority
DE
Germany
Prior art keywords
water
swellable
structures
difficult
preparation
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
DEF58896D
Other languages
German (de)
Inventor
Dr Gerhard Balle
Dr Kurt Sponsel
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 DEF58896D priority Critical patent/DE527197C/en
Application granted granted Critical
Publication of DE527197C publication Critical patent/DE527197C/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
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08Cellulose derivatives
    • C08L1/26Cellulose ethers
    • C08L1/28Alkyl ethers

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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)
  • Compositions Of Macromolecular Compounds (AREA)

Description

Verfahren zur Darstellung von in Wasser nicht quellbaren oder schwer löslichen Alkylcellulosederivaten und Gebilden daraus Einige Alkylcelluloseäther, insbesondere Methylcellulosen und gewisse Äthylcellulosen, haben die Eigenschaft, in Wasser von 2o° C und darunter quellbar oder löslich zu sein.Process for the preparation of water that is not swellable or difficult to use soluble alkyl cellulose derivatives and constructions thereof Some alkyl cellulose ethers, in particular methyl celluloses and certain ethyl celluloses have the property to be swellable or soluble in water of 20 ° C and below.

Ein großes technisches Anwendungsgebiet liegt aber gerade in nicht löslichen oder nicht quellbaren Cellulosederivaten bzw. Gebilden daraus, z. B. für Filme, Kunstfäden, plastische Massen für Kunststoffe usw.However, there is not a large technical area of application in soluble or non-swellable cellulose derivatives or structures thereof, e.g. B. for Films, synthetic threads, plastic masses for plastics, etc.

Es wurde nun gefunden, daß man z. B. einer Methylcellulose die Löslichkeit in Wasser nehmen kann, wenn man ihrer wäßrigen Lösung eine gewisse Menge von Stoffen, die mit der wäßrigen Lösung Kolloide bilden, zumischt und bis zur eingetretenen Lösung verknetet. Beispielsweise eignet sich hierzu die im Handel unter dem Namen Latex vorkommende Kautschukmilch, von der man etwa io bis 2o o/o zusetzen kann. Ein aus dieser Lösung hergestellter Film ist nach dem Antrocknen nicht wieder in Wasser löslich. Zu den Stoffen, die man den Alkylcellulosen zwecks Unlöslichmachung beimischen kann, gehören ferner Phenolformaldehydkunstharz, Leinöl, Benzylalkohol u. a.It has now been found that z. B. a methyl cellulose the solubility can take in water if you add a certain amount of substances to its aqueous solution, which form colloids with the aqueous solution, mixed and until the occurred Kneaded solution. For example, the one commercially available under the name is suitable for this purpose Rubber milk occurring in latex, of which about 10 to 20 o / o can be added. A film made from this solution is not in again after drying Water soluble. Among the substances that can be added to the alkyl celluloses for the purpose of making them insoluble can be admixed, also include phenol-formaldehyde synthetic resin, linseed oil, benzyl alcohol i.a.

Es ist bereits aus der Patentschrift q.o6 o8 i bekannt, eiweißfällende Mittel, insbesondere Gerbstoffe, zur Unlöslichmachung wasserlöslicher Alkylcellulosen zu verwenden. Diese unterscheiden sich von dem vorliegenden Mittel sowohl hinsichtlich der Einwirkungsart als auch hinsichtlich der Wirkung, die sie auf die Alkylcellulose ausüben, so daß auf die Anwendbarkeit der vorliegenden Stoffe nicht geschlossen werden konnte. Beispiele i. In ioo Gewichtsteile einer 5%igen Lösung von Methylcellulose in. Wasser werden z Gewichtsteile einer fein gepulverten, zweckmäßig mit Wasser angefeuchteten Athylc@ellulose, die an sich in Wasser unlöslich ist, zugesetzt. Die Mischung wird so lange gerührt, bis eine homogene Mischung entstanden ist. Gießt man die Lösung nun auf eine Glasplatte aus und läßt das Wasser verdunsten, so hinterbeleibt eine klare Folie, die in Wasser kaum löslich ist.It is already known from the patent specification q.o6 o8 i, protein precipitating Preparations, in particular tanning agents, for rendering water-soluble alkyl celluloses insoluble to use. These differ from the present means in terms of both the type of action as well as the effect they have on the alkyl cellulose exercise, so that the applicability of the present substances is not inferred could be. Examples i. In 100 parts by weight of a 5% solution of methyl cellulose in. Water z parts by weight of a finely powdered, expediently with water Moistened Ethylc @ ellulose, which in itself is insoluble in water, added. The mixture is stirred until a homogeneous mixture has formed. Pours the solution is now poured out onto a glass plate and the water is allowed to evaporate, leaving it behind a clear film that is hardly soluble in water.

2. i oo Gewichtsteile einer i o %igen Methylcelluloselösung werden mit io Gewichtsteilen einer etwa 35%igen Latex-Emulsion versetzt und gleichmäßig verrührt. Die Mischung hinterläßt, auf eine Glasplatte ausgegossen, beim Verdunsten des Wassers eine in Wasser völlig unlösliche Folie.2. 10 parts by weight of a 10% methyl cellulose solution mixed with 10 parts by weight of an approximately 35% latex emulsion and evenly stirred. The mixture leaves, poured onto a glass plate, when the water evaporates, a film completely insoluble in water.

Claims (1)

PATRNTANSPRUCI1: Verfahren zur Darstellung nicht quellbarer oder schwer löslicher Allzylcellulos.ederivate und Gebilde daraus, dadurch gekennzeichnet, daß man den wäßrigen Lösungen von Alkyl.cellulosen solche wasserunlöslichen Stoffe zusetzt, die mit der wäßrigen Lösung Kolloide zu 'bilden imstande sind, ohne sich jedoch mit den Alkylcelluiosen chemisch umzusetzen.PATRNTANSPRUCI1: Process for the representation of non-swellable or difficult Soluble Allzylcellulos.ederivate and structures therefrom, characterized in that water-insoluble substances are added to the aqueous solutions of alkyl celluloses, which are able to form colloids with the aqueous solution without, however, forming to react chemically with the alkylcelluioses.
DEF58896D 1925-05-16 1925-05-16 Process for the preparation of alkyl cellulose derivatives which are not swellable or difficult to dissolve in water and structures thereof Expired DE527197C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF58896D DE527197C (en) 1925-05-16 1925-05-16 Process for the preparation of alkyl cellulose derivatives which are not swellable or difficult to dissolve in water and structures thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF58896D DE527197C (en) 1925-05-16 1925-05-16 Process for the preparation of alkyl cellulose derivatives which are not swellable or difficult to dissolve in water and structures thereof

Publications (1)

Publication Number Publication Date
DE527197C true DE527197C (en) 1931-06-15

Family

ID=7108669

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF58896D Expired DE527197C (en) 1925-05-16 1925-05-16 Process for the preparation of alkyl cellulose derivatives which are not swellable or difficult to dissolve in water and structures thereof

Country Status (1)

Country Link
DE (1) DE527197C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4283229A (en) 1978-02-13 1981-08-11 Hoechst Aktiengesellschaft Process for the preparation and use of stable cellulose ether suspensions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4283229A (en) 1978-02-13 1981-08-11 Hoechst Aktiengesellschaft Process for the preparation and use of stable cellulose ether suspensions

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