BE446802A - - Google Patents

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Publication number
BE446802A
BE446802A BE446802DA BE446802A BE 446802 A BE446802 A BE 446802A BE 446802D A BE446802D A BE 446802DA BE 446802 A BE446802 A BE 446802A
Authority
BE
Belgium
Prior art keywords
emi
viscose
concentration
dialysis
alkali
Prior art date
Application number
Other languages
French (fr)
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 filed Critical
Publication of BE446802A publication Critical patent/BE446802A/fr

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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
    • D01F2/00Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • 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
    • D01F2/00Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08Composition of the spinning solution or the bath

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

  

  Procédé pour la fabrication de fila et de film* à valeur de

  
 <EMI ID=1.1> 

  
Dana la fabrication d'une fibre bonne pour l'usage sui. vant le procédé de la viscose, on a antérieurement attaché

  
 <EMI ID=2.1> 

  
oours du développement, on a reoonnu toutefois de plus en plus que la valeur de gonflement a une importance décisive pour la qualité à l'emploi. Tandis que la valeur de gonfle-

  
 <EMI ID=3.1> 

  
bres en cellulose régénérée présentent une absorption d'eau

  
 <EMI ID=4.1> 

  
gonflement, la résistance au liquide alcalin est réduite.

  
 <EMI ID=5.1> 

  
de gonflement. On a proposé de traiter les fibres au moyen d'une solution de formaldéhyde, avec ou sans addition de oa. talyseurs. On a également opéré de telle manière que l'on faisait pénétrer de la résine artificielle dans la fibre. Tous ces procédés n'ont toutefois pas satisfait oomplèteme

  
 <EMI ID=6.1> 

  
observées exactement pour qu'il ne se produise pas de dété.

  
 <EMI ID=7.1> 

  
tiens de travail, les fibres deviennent facilement cassant*

  
 <EMI ID=8.1> 

  
ou de boucles.

  
 <EMI ID=9.1> 

  
 <EMI ID=10.1> 

  
laine cellulosique ou des films de valeur de gonflement réduite et de résistance aoorue aux alcalis, de la manière le plus simple, lorsqu'on règle dans la viscose la conoentrati de la lessive de telle manière qu'elle est inférieure à la moitié de la concentration en cellulose. si l'on file par

  
 <EMI ID=11.1> 

  
on obtient une fibre dont la valeur de gonflement est aux e

  
 <EMI ID=12.1> 

  
 <EMI ID=13.1> 

  
 <EMI ID=14.1> 

  
bres préparées de la manière usuelle présentent une solubi-

  
 <EMI ID=15.1> 

  
prooédé décrit sont, pour leurs autres propriétés, équivale tes sous tous les rapports à celles obtenues lors du filage de visoose ayant une concentration normale en alcali.

  
 <EMI ID=16.1> 

  
que que par suite de la oonoentration réduite de la viscose en alcali, on réalise une économie d'acide et on peut trava 1er avec des bains de filage qui présentent une concentrât! réduite en acide.

  
Il est sans importance pour le procédé que l'on règle dans la viscose une concentration de cellulose déterminée. 

  
Naturellement, pour des raisons d'économie, on fera en so:
de choisir la concentration en cellulose aussi élevée que sible. Par suite de la viscosité, croissant avec la oonoe tration en cellulose, de la solution de filage il y a tout fois là une limite supérieure, on peut filer, suivant le cédé, de la viscose provenant d'alcali-cellulose mûrie et

  
 <EMI ID=17.1> 

  
li-oellulose mûrie, à cause de sa viscosité réduite, on p employer pour la fabrication des solutions de viscose des celluloses provenant de matières premières cellulosiques q conques, par exemple de la cellulose de bois de pin, de sa ou de hêtre et également de la cellulose de paille ou de feuillages de pommes de terre.

  
 <EMI ID=18.1> 

  
se sert du procédé de dialyse. Il est oonnu de soumettre la viscose à la dialyse. Le prooédé oonnu date des origine de l'industrie de la soie artificielle. On a alors préféra dialyser la viscose pour en extraire tous les composés crie

  
 <EMI ID=19.1> 

  
viscose ainsi purifiée, on produirait une meilleure fibre

  
 <EMI ID=20.1> 

  
 <EMI ID=21.1> 

  
re dans la fabrication des fibres artificielles.

  
Pour une réalisation rapide et économique de la dialya il est nécessaire que la viscose soit continuellement en mo vement dans le dialyseur et des parties de liquide au repos doivent être évitées en toutes circonstances. On peut obte nir oe résultat par une forte agitation ou de grandes vites

  
 <EMI ID=22.1> 

  
 <EMI ID=23.1> 

  
 <EMI ID=24.1> 

  
ditions, on parvient dans un temps très court à abaisser la



  Process for the production of fila and film * at value of

  
 <EMI ID = 1.1>

  
In the making of a good fiber for the use on. before the viscose process, we previously attached

  
 <EMI ID = 2.1>

  
In the course of development, however, it has increasingly been recognized that the swelling value is of decisive importance for job quality. While the value of inflates

  
 <EMI ID = 3.1>

  
regenerated cellulose fibers exhibit water absorption

  
 <EMI ID = 4.1>

  
swelling, resistance to alkaline liquid is reduced.

  
 <EMI ID = 5.1>

  
swelling. It has been proposed to treat the fibers by means of a formaldehyde solution, with or without the addition of oa. analyzers. We also operated in such a way that we made penetrate artificial resin into the fiber. However, all these methods have not fully satisfied

  
 <EMI ID = 6.1>

  
observed exactly so that summer does not occur.

  
 <EMI ID = 7.1>

  
like to work, the fibers become easily brittle *

  
 <EMI ID = 8.1>

  
or loops.

  
 <EMI ID = 9.1>

  
 <EMI ID = 10.1>

  
cellulosic wool or films of reduced swelling value and alkali resistance, in the simplest way, when the concentration of the laundry in viscose is adjusted so that it is less than half the concentration cellulose. if we go by

  
 <EMI ID = 11.1>

  
we get a fiber whose swelling value is at e

  
 <EMI ID = 12.1>

  
 <EMI ID = 13.1>

  
 <EMI ID = 14.1>

  
bres prepared in the usual manner exhibit a solubility

  
 <EMI ID = 15.1>

  
The process described are, for their other properties, equivalent in all respects to those obtained during the spinning of visoose having a normal concentration of alkali.

  
 <EMI ID = 16.1>

  
that as a result of the reduced oonoentration of the viscose in alkali, an acid economy is achieved and it is possible to work with spinning baths which have a concentrate! reduced in acid.

  
It is irrelevant to the process that a specific cellulose concentration is set in viscose.

  
Of course, for reasons of economy, we will do so:
to choose the cellulose concentration as high as possible. Due to the viscosity of the spinning solution, which increases with the growth in cellulose, there is however an upper limit, depending on the yield, viscose from matured alkali-cellulose and

  
 <EMI ID = 17.1>

  
matured cellulose, because of its reduced viscosity, celluloses obtained from cellulose raw materials, such as cellulose from pine, sa or beech, and also from cellulose can be used for the manufacture of viscose solutions. cellulose from straw or potato foliage.

  
 <EMI ID = 18.1>

  
uses the dialysis process. It is known to subject viscose to dialysis. The known process dates from the origins of the artificial silk industry. We then preferred to dialyze the viscose to extract all the Cree compounds.

  
 <EMI ID = 19.1>

  
viscose thus purified, we would produce a better fiber

  
 <EMI ID = 20.1>

  
 <EMI ID = 21.1>

  
re in the manufacture of artificial fibers.

  
For a rapid and economical realization of the dialyzation it is necessary that the viscose is continuously moving in the dialyzer and parts of liquid at rest should be avoided under all circumstances. This can be obtained by vigorous agitation or at high speed.

  
 <EMI ID = 22.1>

  
 <EMI ID = 23.1>

  
 <EMI ID = 24.1>

  
editions, it is possible in a very short time to lower the

 

Claims (1)

viscose à la valeur désirée au point de vue de la teneur <EMI ID=25.1> viscose to the desired value from the point of view of the content <EMI ID = 25.1> d'écoulement trop minime de la viscose et en cas d'existe too little flow of viscose and if there is <EMI ID=26.1> <EMI ID = 26.1> dialysa s'effectue seulement très lentement et il est à r douter par suite d'un trop grand apauvrissement en aloali dans les couches extérieures tournées vera les membranes, qu'il se produise une coagulation de viscose. The dialysis is carried out only very slowly and it is to be doubted that due to too great a depletion of aloali in the outer layers turned towards the membranes, that viscose coagulation will occur. <EMI ID=27.1> <EMI ID = 27.1> <EMI ID=28.1> <EMI ID = 28.1> <EMI ID=29.1> <EMI ID = 29.1> sans dialyse par dissolution du xanthogénate avec de l'eat ou une lessive de soude convenablement diluée, et de même oentration d'alcali. Ceci provient probablement de oe que le xanthogénate ayant une fois passé avec une forte leaaiv de soude dans la solution colloïdale de viscose, modifie p seulement son degré de dispersion. without dialysis by dissolving the xanthogenate with ate or a suitably diluted sodium hydroxide solution, and likewise the concentration of alkali. This is probably due to the fact that the xanthogenate having once passed with a strong leaaiv of sodium hydroxide in the colloidal solution of viscose, only modifies its degree of dispersion. A la plaoe d'une viscose obtenue par dialyse, on peut Using a viscose obtained by dialysis, we can <EMI ID=30.1> <EMI ID = 30.1> <EMI ID=31.1> <EMI ID = 31.1> très procédés de travail. very work processes. <EMI ID=32.1> <EMI ID = 32.1> 1. Prooédé pour la fabrication de fibrea ou de films d 1. Process for the manufacture of fibrea or films of <EMI ID=33.1> <EMI ID = 33.1> vent le procédé à la viscose, oaraotériaé en ce qu'on emplo une viscose dont la concentration en alcali vaut moins de 1 moitié de la concentration en oelluloae. Wind the process with viscose, oaraotériaé in that one employs a viscose whose alkali concentration is less than 1 half of the concentration of celluloae. <EMI ID=34.1> <EMI ID = 34.1> une viaooae dont la concentration en aloali a été abaissé* par dialyse. a viaooae whose aloali concentration was lowered * by dialysis.
BE446802D 1942-08-11 1942-08-11 BE446802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE446802T 1942-08-11

Publications (1)

Publication Number Publication Date
BE446802A true BE446802A (en) 1942-09-30

Family

ID=3869753

Family Applications (1)

Application Number Title Priority Date Filing Date
BE446802D BE446802A (en) 1942-08-11 1942-08-11

Country Status (2)

Country Link
BE (1) BE446802A (en)
FR (1) FR884963A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946387C (en) * 1943-07-16 1956-08-02 Shozo Tachikawa Process for the production of rayon by spinning viscose

Also Published As

Publication number Publication date
FR884963A (en) 1943-09-01

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