BE446802A - - Google Patents
Info
- 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
Links
- 229920000297 Rayon Polymers 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 9
- 238000000502 dialysis Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 6
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 239000006185 dispersion Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 229920002678 cellulose Polymers 0.000 description 11
- 239000001913 cellulose Substances 0.000 description 10
- 235000010980 cellulose Nutrition 0.000 description 10
- 239000000835 fiber Substances 0.000 description 6
- 230000008961 swelling Effects 0.000 description 5
- 238000009987 spinning Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920002955 Art silk Polymers 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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
-
- 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
- D01F2/08—Composition 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)
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)
| 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 |
-
1942
- 1942-08-11 BE BE446802D patent/BE446802A/fr unknown
- 1942-08-13 FR FR884963D patent/FR884963A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR884963A (en) | 1943-09-01 |
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