DE542815C - Process for the preparation of a solution of fibroin - Google Patents

Process for the preparation of a solution of fibroin

Info

Publication number
DE542815C
DE542815C DEI39994D DEI0039994D DE542815C DE 542815 C DE542815 C DE 542815C DE I39994 D DEI39994 D DE I39994D DE I0039994 D DEI0039994 D DE I0039994D DE 542815 C DE542815 C DE 542815C
Authority
DE
Germany
Prior art keywords
fibroin
solution
preparation
silk
liquid ammonia
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
DEI39994D
Other languages
German (de)
Inventor
Dr Heinrich Fink
Dr Fritz Gajewski
Dr Herbert Mahn
Dr Ernst Rossner
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 DEI39994D priority Critical patent/DE542815C/en
Application granted granted Critical
Publication of DE542815C publication Critical patent/DE542815C/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F4/00Monocomponent 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)
  • Artificial Filaments (AREA)

Description

Verfahren zur Herstellung einer Lösung von Fibroin Es ist bekannt, daß sich bei der Seidenherstellung ein sehr beträchtlicher Abfall an Rohseide ergibt, der einen wesentlich geringeren Wert besitzt als die reine Seide. Es hat bisher nicht an Versuchen gefehlt, aus diesen Abfällen Lösungen herzustellen, aus denen man wieder Fäden formen kann nachArbeitsweisen, wie siezur Erzeugung von Kunstseide angewendet werden.Process for preparing a solution of fibroin It is known that there is a very considerable waste of raw silk in the production of silk, which has a much lower value than pure silk. It has so far There has been no lack of attempts to turn this waste into solutions from which you can form threads again by working methods such as those used for the production of rayon be applied.

Bis heute ist es aber noch nicht gelungen, wirklich gute Lösungsmittel für Fibroin ausfindig zu machen, d. h. solche, welche einen Abbau des Fibroins weitgehend verhindern.To date, however, it has not yet been possible to find really good solvents track down for fibroin, d. H. those which largely break down the fibroin impede.

Es wurde nun in flüssigem Ammoniak ein vorzügliches Lösungsmittel für Fibroin gefunden, das sich dadurch auszeichnet, daß es die Eiweißsubstanz nur wenig abbaut und Lösungen liefert, die zur Herstellung von Gebilden, wie plastische Massen, Filme und Fäden, geeignet sind. ES ist schon versucht worden, Seide in flüssigem Ammoniak zu lösen. Diese Versuche blieben vermutlich deshalb ohne Erfolg, weil nicht genügend gereinigtes Fibroin, wahrscheinlich völlig unentbastete Seide verwendet wurde.It now became an excellent solvent in liquid ammonia found for fibroin, which is characterized by the fact that it is the protein substance only degrades little and delivers solutions necessary for the production of structures, such as plastic ones Masses, films and threads, are suitable. Attempts have already been made to make silk in liquid Dissolve ammonia. These attempts were probably unsuccessful because they were not enough purified fibroin, probably completely unburned silk used became.

ES ist zwar bereits schon vorgeschlagen worden, die Extraktion von Stoffen, die sonst mit anderen Lösungsmitteln; beispielsweise mit Wasser, durchgeführt wurde, mit flüssigem Ammoniak auszuführen. Die vorliegende Erfindung betrifft das möglichst restlose Lösen von Seidenfibroin, also kein Extrahieren. Auch soll das flüssige Ammoniak auf einen Körper Anwendung finden, der bisher noch jedem Lösungs- oder Extraktionsversuch mit flüchtigen Lösungsmitteln widerstand. Zum Unterschied von der älteren Arbeitsweise soll in vorliegendem Verfahren das flüssige Ammoniak nur bei besonders tiefen Temperaturen verwendet werden.It has already been suggested that the extraction of Substances that are otherwise with other solvents; for example with water was to run with liquid ammonia. The present invention relates to that Dissolve silk fibroin as completely as possible, i.e. no extraction. That should too liquid ammonia can be applied to a body that up to now has been exposed to or attempted extraction with volatile solvents. The difference From the older working method, the liquid ammonia is supposed to be used in the present process can only be used at particularly low temperatures.

Bei der Herstellung von Lösungen verwendet man Temperaturen, die zwischen dem Siedepunkt und dem Erstarrungspunkt des flüssigen Ammoniaks bei normalem Druck liegen, d. h. Temperaturen von - 33 bis - 77°. Ammoniak von - 4o" wirkt bereits stark lösend auf Fibroin. Es können z. B. 2o g gut entbastete Seide in Zoo ccm Ammoniak bei - 7o° vollkommen gelöst werden. Die Lösung wird von Verunreinigungen, wie Kokonresten, durch Filtrieren befreit und ist dann zur weiteren Verarbeitung zwecks Herstellung von plastischen Massen, Filmen und Fäden geeignet.When preparing solutions, temperatures are used that are between the boiling point and freezing point of liquid ammonia at normal pressure lying, d. H. Temperatures from - 33 to - 77 °. Ammonia of - 4o "is already working strongly dissolving on fibroin. It can e.g. B. 20 g of well-boned silk in zoo cc ammonia be completely released at - 7o °. The solution is contaminated by impurities such as cocoon residues, freed by filtration and is then for further processing for the purpose of manufacture suitable for plastic masses, films and threads.

Claims (1)

PATENTAISPRUCH Verfahren zur Herstellung einer Lösung von Fibroin, dadurch gekennzeichnet, daß als Lösungsmittel flüssiges Ammoniak bei Temperaturen, die erheblich unterhalb des Siedepunktes des flüssigen Ammoniaks liegen, benutzt wird.PATENTAL CLAIM Process for the preparation of a solution of fibroin, characterized in that liquid ammonia is used as the solvent at temperatures which are considerably below the boiling point of liquid ammonia will.
DEI39994D 1929-11-30 1929-12-01 Process for the preparation of a solution of fibroin Expired DE542815C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI39994D DE542815C (en) 1929-11-30 1929-12-01 Process for the preparation of a solution of fibroin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1966756X 1929-11-30
DEI39994D DE542815C (en) 1929-11-30 1929-12-01 Process for the preparation of a solution of fibroin

Publications (1)

Publication Number Publication Date
DE542815C true DE542815C (en) 1932-01-28

Family

ID=25981613

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI39994D Expired DE542815C (en) 1929-11-30 1929-12-01 Process for the preparation of a solution of fibroin

Country Status (1)

Country Link
DE (1) DE542815C (en)

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