DE663530C - Process for the production of solid synthetic fibers from viscose - Google Patents

Process for the production of solid synthetic fibers from viscose

Info

Publication number
DE663530C
DE663530C DEI39838D DEI0039838D DE663530C DE 663530 C DE663530 C DE 663530C DE I39838 D DEI39838 D DE I39838D DE I0039838 D DEI0039838 D DE I0039838D DE 663530 C DE663530 C DE 663530C
Authority
DE
Germany
Prior art keywords
viscose
production
synthetic fibers
solid synthetic
cellulose
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
DEI39838D
Other languages
German (de)
Inventor
Dr Paul Esselmann
Dr Johannes Kleine
Dr Walther Schieber
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 DEI39838D priority Critical patent/DE663530C/en
Application granted granted Critical
Publication of DE663530C publication Critical patent/DE663530C/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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose

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 von festen Kunstfasern aus Viscose Es ist bekannt, Viscoselösungen mit einem Gehalt von über ioo/o Cellulose zur Herstellung von Kunstseide zu verwenden (deutsche Patentschriften 223 736, 337 672 und 492 279).Process for the production of solid synthetic fibers from viscose It is known, viscose solutions with a content of over ioo / o cellulose for the production to use artificial silk (German patents 223 736, 337 672 and 492 279).

In stark sauren Bädern nach dem Hauptpatent 649 o82 ist eine solche über io% Cellulose enthaltende Viscose bisher noch nicht verwendet worden.In strongly acidic baths according to the main patent 649 o82 there is such a thing Viscose containing more than 10% cellulose has not yet been used.

Es hat sich gezeigt, daß die Verwendung so hochprozentiger Viscosen keine Schwierigkeiten beim Spinnen in stark sauren Bädern verursacht. Die Viscosen mit über io% Cellulose besitzen in den stark sauren Bädern so gute Spinnbarkeit, daß es möglich ist, mit hohen Abzugsgeschwindigkeiten, z. B. mit i oo m und mehr, zu arbeiten. Auch ist ein gewisser Zuwachs an Festigkeit bei den mit solchen Viscosen gesponnenen Fäden festzustellen. Ferner ist für die Regenerierung der Bäder die Verwendung hochprozentiger Spinnlösungen sehr vorteilhaft. Die Viscosen verspinnt man zweckmäßig in urgereiftem oder nur schwach gereiftem Stadium und erzielt je nach der dem Faden erteilten Strekkung Festigkeiten von Zoo bis 300 g pro i oo Deniers und mehr. Zur Verhinderung einer schädlichen weiteren Einwirkung der Spinnsäuren auf den Faden wird die Spule im Oberbad mit verdünnten Säuren oder mit Wasser gewaschen.It has been shown that the use of such high percentage viscose does not cause any difficulties in spinning in strongly acidic baths. The viscose with over 10% cellulose have so good spinnability in the strongly acidic baths that it is possible to use high take-off speeds, for. B. with i oo m and more to work. A certain increase in strength can also be observed in the threads spun with such viscoses. Furthermore, the use of high-percentage spinning solutions is very advantageous for the regeneration of the baths. The viscose fibers are expediently spun in a fully ripened or only slightly ripened stage and, depending on the stretch given to the thread, strengths of up to 300 g per 100 denier and more are achieved. To prevent further harmful effects of the spinning acids on the thread, the bobbin is washed in the upper bath with diluted acids or with water.

Gegenüber dem bekannten Verfahren gemäß der britischen Patentschrift 317 6o8 werden mit dem Verfahren des Hauptpatents höhere Festigkeiten erreicht, wenn neben der Schwefelsäure noch mindestens 2o% an Bisulfaten, berechnet auf Ammoniumbisulfat, im Bad enthalten sind. Beispiel Zellstoff wird in normaler Weise in i8%iger Natronlauge getaucht, auf das Dreifache abgepreßt, zerfasert und die Alkalicellulose 5 Tage lang bei 2o° reifen gelassen. Darauf wird mit 330/0 Schwefelkohlenstoff sulfidiert und zu einer Viscose von 13,5010 Zellstoff- und 6,8% Alkali gelöst. Die Viscose wird mit einer Kochsalzreife 6i/2 bei einer Temperatur von q.5° in .ein Fällbad gesponnen, das 35 Gewichtsteile freie Schwefelsäure, 3o Gewichtsteile Ammoniumbisulfat und 12 Gewichtsteile Natriumbisulfat in i oo Gewichtsteilen Bad enthält. Die Badstrecke beträgt 8 cm, die Luftstrecke 45 cm. Der Faden wird durch einen kammartigep Fadenführer gestreckt. Die'Abzugsgeschwi'"-digkeit beträgt 55m. ;t'^Compared to the known process according to British patent specification 317 6o8, the process of the main patent achieves higher strengths if the bath contains at least 20% of bisulfates, calculated on ammonium bisulfate, in addition to the sulfuric acid. Example Cellulose is dipped in the normal way in 18% sodium hydroxide solution, pressed three times as much, and the alkali cellulose is left to mature for 5 days at 20 °. Then it is sulfided with 330/0 carbon disulfide and dissolved to a viscosity of 13.5010 pulp and 6.8% alkali. The viscose is spun in a precipitation bath with a salt ripeness of 6 1/2 at a temperature of q.5 ° which contains 35 parts by weight of free sulfuric acid, 30 parts by weight of ammonium bisulphate and 12 parts by weight of sodium bisulphate in 100 parts by weight of bath. The bath length is 8 cm, the air gap 45 cm. The thread is stretched through a comb-like thread guide. The withdrawal speed is 55m.; T '^

Claims (1)

PArtrNTANSPRtlCtt: Verfahren zur Herstellung von festen Kunstfasern aus Viscose nach dem Patent -r 649 o82, dadurch gekennzeichnet, daß ;man Viscosen verspinnt, die mehr als iö% Cellulose enthalten.
PArtrNTANSPRtlCtt: Method of making solid Synthetic fibers made from viscose according to the patent -r 649 o82, characterized in that ; one spins viscose that are more than contain 10% cellulose.
DEI39838D 1929-11-09 1929-11-16 Process for the production of solid synthetic fibers from viscose Expired DE663530C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI39838D DE663530C (en) 1929-11-09 1929-11-16 Process for the production of solid synthetic fibers from viscose

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE705157X 1929-11-09
DEI39838D DE663530C (en) 1929-11-09 1929-11-16 Process for the production of solid synthetic fibers from viscose

Publications (1)

Publication Number Publication Date
DE663530C true DE663530C (en) 1938-08-08

Family

ID=25946651

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI39838D Expired DE663530C (en) 1929-11-09 1929-11-16 Process for the production of solid synthetic fibers from viscose

Country Status (1)

Country Link
DE (1) DE663530C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE749338C (en) * 1940-11-20 1944-12-19 Glanzstoff Ag Process for the production of artificial threads or fibers with increased strength from low-alkali viscose
DE749501C (en) * 1941-05-25 1952-04-17 Spinnfaser A G Process for the production of rayon from viscose
DE946387C (en) * 1943-07-16 1956-08-02 Shozo Tachikawa Process for the production of rayon by spinning viscose

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE749338C (en) * 1940-11-20 1944-12-19 Glanzstoff Ag Process for the production of artificial threads or fibers with increased strength from low-alkali viscose
DE749501C (en) * 1941-05-25 1952-04-17 Spinnfaser A G Process for the production of rayon from viscose
DE946387C (en) * 1943-07-16 1956-08-02 Shozo Tachikawa Process for the production of rayon by spinning viscose

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