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 thereofInfo
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/26—Cellulose ethers
- C08L1/28—Alkyl ethers
Landscapes
- 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)
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)
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 |
-
1925
- 1925-05-16 DE DEF58896D patent/DE527197C/en not_active Expired
Cited By (1)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE527197C (en) | Process for the preparation of alkyl cellulose derivatives which are not swellable or difficult to dissolve in water and structures thereof | |
DE750501C (en) | Additive for detergents | |
DE542646C (en) | Process for the production of rubber-like compositions | |
DE510445C (en) | Process for the preparation of tanning condensation products | |
DE1298657B (en) | Process for the preparation of glycol-soluble dyes | |
DE714818C (en) | Process for the production of colloids | |
DE593911C (en) | Solid carriers for therapeutic and technical purposes | |
DE145916C (en) | ||
DE550440C (en) | Depilatories | |
DE511019C (en) | Process for improving cellulose ethers | |
DE180830C (en) | ||
AT164273B (en) | Shaving products | |
DE925541C (en) | Process for the production of aqueous solutions of drugs that are poorly soluble in water | |
DE662035C (en) | Process for the production of laxatives | |
AT94837B (en) | Process for the production of cellulose derivatives. | |
DE419658C (en) | Process for the production of a water-soluble evaporation product from latex | |
DE720573C (en) | Textile finishing agents | |
DE1522451A1 (en) | Process for enhancing the image on lithographic printing plates | |
DE582679C (en) | Process for the production of a starch which is swellable in cold water | |
DE289220C (en) | ||
DE504630C (en) | Process for the preparation of sulfonated cellulose derivatives | |
AT95033B (en) | Process for the production of a soluble, dry binding or thickening agent. | |
DE149795C (en) | ||
DE671747C (en) | Process for the production of durable, viscous, acidic rhodanide solutions | |
DE844799C (en) | Method of making a wound healing agent |