DE573741C - Process for concentrating aqueous fibroin solutions - Google Patents

Process for concentrating aqueous fibroin solutions

Info

Publication number
DE573741C
DE573741C DEI40580D DEI0040580D DE573741C DE 573741 C DE573741 C DE 573741C DE I40580 D DEI40580 D DE I40580D DE I0040580 D DEI0040580 D DE I0040580D DE 573741 C DE573741 C DE 573741C
Authority
DE
Germany
Prior art keywords
fibroin
fibroin solutions
concentrating aqueous
solutions
aqueous fibroin
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
DEI40580D
Other languages
German (de)
Inventor
Dr Wilhelm Irion
Dr Herbert Mahn
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 DEI40580D priority Critical patent/DE573741C/en
Application granted granted Critical
Publication of DE573741C publication Critical patent/DE573741C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Fats And Perfumes (AREA)

Description

Verfahren zum Konzentrieren von wässerigen Fibroinlösungen Bei der Herstellung von verspinnbaren wässerigen Lösungen aus Seidenfibroin erweist es sich öfters als erforderlich, verdünnte Lösungen zu konzentrieren. Dabei tritt leicht der Übelstand auf, daß das Fibroin unter Häutebildung, ähnlich der Hautbildung auf heißer Milch, teilweise oder sogar ganz ausgeschieden wird.Method for Concentrating Aqueous Fibroin Solutions In the It turns out to be the production of spinnable aqueous solutions from silk fibroin more often than necessary to concentrate dilute solutions. It treads lightly the problem is that the fibroin forms a skin, similar to the skin formation hot milk, is partially or even completely excreted.

Dispergiert man z. B. nach dem Verfahren der britischen Patentschrift 36o 804 Fibroin in Natriumrhodanid und dialysiert die erhaltene Lösung auf einen Salzgehalt von weniger als 4'/" so tritt beim Konzentrieren der dialysierten Lösung die geschilderte Hautbildung relativ leicht auf, besonders dann, wenn die Vorbehandlung der Seideabfälle beim Entbasten usw. schonend vorgenommen wurde.If you disperse z. B. by the method of the British patent specification 36o 804 fibroin in sodium rhodanide and dialyzed the resulting solution on a Salinity less than 4 '/ "so occurs when concentrating the dialyzed solution the described skin formation relatively easily, especially if the pretreatment the silk waste was carefully carried out during deboning, etc.

Es wurde nun gefunden, daß sich diese Ausscheidung vermeiden läßt, wenn man den Fibroinfösungen kleine Mengen von Galle, Gallensäuren, Gallamid, Lecithin, Alkalisalzen von Oxy-, Chlor- oder Aminobenzoesäuren oder Netzmitteln, wie Alkalisalzen der substituierten Naphthalinsulfosäuren und der sulfurierten Textilöle, u. dgl. zusetzt, kurzum Substanzen, die dafür bekannt sind, daß sie die Oberflächenspannung herabsetzen. Die Art und die Menge der Zusatzstoffe muß so gewählt werden, daß sie keine fällende Wirkung auf Fibroin ausüben.It has now been found that this elimination can be avoided if you add small amounts of bile, bile acids, gallamide, lecithin, Alkali salts of oxy-, chloro- or aminobenzoic acids or wetting agents such as alkali salts the substituted naphthalene sulfonic acids and the sulfurized textile oils, and the like. adds, in short, substances that are known to reduce surface tension reduce. The type and amount of additives must be chosen so that they have no precipitating effect on fibroin.

Durch die Zugabe der Substanzen wird ferner ermöglicht, daß die Seideabfälle außer einer schonenden Entbastung zum Zwecke der Lösung keiner besonderen Vorbehandlung bedürfen, so daß ein Abbau des Ausgangsmaterials vermieden wird. Der Zusatz solcher Stoffe hat noch den weiteren Vorteil, daß die Gallertstrukturen und Schwarmbildungen in der Lösung beseitigt, die Filterfähigkeit verbessert und die Reib- und Scherbeständigkeit erhöht werden.The addition of the substances also enables the silk waste apart from a gentle deburring for the purpose of dissolving, no special pretreatment so that degradation of the starting material is avoided. The addition of such Substance has the further advantage that the jelly structures and swarm formations eliminated in the solution, the filterability improved and the friction and shear resistance increase.

Beispiel Eine wässerige Lösung mit einem Gehalt von 4/, Fibroin und o,2 % 21#Tatriumrhodanid wird mit o,oz % Desoxycholsäure versetzt und in einer rotierenden Trommel unter Erwärmung auf 3o bis 40° und Überleitung von Luft auf einen Gehalt von 18 bis 2o 0/0 Fibroin eingedickt. An Stelle der angegebenen Menge Desoxycholsäure können auch o,o5 0!'. Rindergalle oder o,o2 010 Cholsäure mit dem gleichen Effekt verwendet werden.EXAMPLE An aqueous solution with a content of 4 /, fibroin and 0.2% 21 # tatrium rhodanide is mixed with 0.02 % deoxycholic acid and placed in a rotating drum with heating to 30 to 40 ° and passage of air to a content of 18 to 2o 0/0 fibroin thickened. Instead of the specified amount of deoxycholic acid, o, o5 0! 'Can also be used. Beef bile or o, o2 010 cholic acid can be used with the same effect.

Das Konzentrieren geht ohne jede Hautbildung vonstatten, was ohne Zusatz solcher Stoffe nicht der Fall ist.Concentration takes place without any skin formation, what without Addition of such substances is not the case.

Claims (1)

PATENTANSPRUCFI Verfahren zum Konzentrieren von wässerigen Fibroinlösungen, dadurch gekennzeichnet, daß den verdünnten Eiweißlösungen vor ihrer Konzentrierung Substanzen zugesetzt werden, welche die Oberflächenspannung der Fibroinlösungen vermindern, aber nicht fällend auf das löste Fibroin wirken.PATENT CLAIMS Process for concentrating aqueous fibroin solutions, characterized in that the diluted protein solutions before their concentration Substances are added which reduce the surface tension of the fibroin solutions reduce, but do not have a precipitating effect on the dissolved fibroin.
DEI40580D 1931-02-02 1931-02-03 Process for concentrating aqueous fibroin solutions Expired DE573741C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI40580D DE573741C (en) 1931-02-02 1931-02-03 Process for concentrating aqueous fibroin solutions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE375702X 1931-02-02
DEI40580D DE573741C (en) 1931-02-02 1931-02-03 Process for concentrating aqueous fibroin solutions

Publications (1)

Publication Number Publication Date
DE573741C true DE573741C (en) 1933-04-05

Family

ID=25863395

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI40580D Expired DE573741C (en) 1931-02-02 1931-02-03 Process for concentrating aqueous fibroin solutions

Country Status (1)

Country Link
DE (1) DE573741C (en)

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