DE806699C - Process for the production of partially or completely saponified stretched acetate silk with improved extensibility - Google Patents

Process for the production of partially or completely saponified stretched acetate silk with improved extensibility

Info

Publication number
DE806699C
DE806699C DED134A DED0000134A DE806699C DE 806699 C DE806699 C DE 806699C DE D134 A DED134 A DE D134A DE D0000134 A DED0000134 A DE D0000134A DE 806699 C DE806699 C DE 806699C
Authority
DE
Germany
Prior art keywords
partially
production
completely saponified
acetate silk
improved extensibility
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
DED134A
Other languages
German (de)
Inventor
Dr Arnulf Sippel
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.)
Deutsche Rhodiaceta AG
Original Assignee
Deutsche Rhodiaceta 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 Deutsche Rhodiaceta AG filed Critical Deutsche Rhodiaceta AG
Priority to DED134A priority Critical patent/DE806699C/en
Application granted granted Critical
Publication of DE806699C publication Critical patent/DE806699C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
    • D06M11/385—Saponification of cellulose-acetate

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)

Description

Verfahren zur Herstellung von teilweise oder ganz verseifter Acetatstreckkunstseide mit verbesserter Dehnbarkeit Es ist bekannt, daß die Festigkeit von Acetatkunstseide dadurch erhöht werden kann, daß die frischgesponnene Faser einer nachträglichen Verstreckung, zumeist unter Behandlung mit kochendem Wasser oder überhitztern Wasserdampf, unterworfen wird oder die Faser bereits nach einem besonderen Streckspinnverfahren hergestellt wird. Die so hergestellte Acetatstreckkunstseide hat den Nachteil, daß sie eine zu geringe Dehnbarkeit besitzt. -Man kann diesem Lrbelstand dadurch abhelfen, daß man die verstreckte Acetatkunstseide durch Führen durch ein Quellungsmittel oder durch mit Nichtlösern verdünnte Lösungsmittel nachträglich wieder etwas schrumpfen läßt. Durch diese Behandlung kann man Fasern mit einer Reißfestigkeit von 2 bis 3 g/den erzielen. Auch wurde schon vorgeschlagen, die verstreckte Acetatkunstseide zu verseifen. Bei dieser Verseifung erzielt man zwar eine weitere Erhöhung der Reißfestigkeit, es gelingt jedoch nicht, die Dehnbarkeit über 6 bis 7 % zu erhöhen, so daß die Faser trotz ihrer sehr hohen Reißfestigkeit in der Praxis nur wenig Eingang gefunden hat.Process for the production of partially or completely saponified acetate synthetic silk with improved extensibility It is known that the strength of acetate synthetic silk can be increased by subjecting the freshly spun fiber to a subsequent drawing, usually with treatment with boiling water or superheated steam, or the fiber is already subjected is produced according to a special draw spinning process. The drawstring acetate thus produced has the disadvantage that it has insufficient extensibility. -You can remedy this problem by allowing the stretched acetate rayon to subsequently shrink again by passing it through a swelling agent or through solvents diluted with nonsolvents. This treatment allows fibers with a tensile strength of 2 to 3 g / den to be obtained. It has also already been proposed to saponify the drawn acetate silk. With this saponification a further increase in tear strength is achieved, but it is not possible to increase the extensibility by more than 6 to 7% , so that the fiber has found little use in practice despite its very high tear strength.

Es wurde nun überraschenderweise gefunden, daß eine teilweise oder ganz verseifte Acetatstreckkunstseide mit erhöhter Dehnung von etwa 8 bis 16°./o in trockenem und voll 7 bis 15% in nassem Zustand dadurch hergestellt «-erden kann, daß die Verseifung mit wäßrigen Ammoniaklösungen bei Temperaturen von vorzugsweise über 8o° in einem Druckgefäß vorgenommen wird. Ein besonderer Vorteil dieses Verfahrens liegt noch darin, daß die Verseifung in wesentlich kürzeren Zeiten als bei Zimmertemperatur durchgeführt werden kann und daß die Konzentrationen der zur Anwendung kommenden Ammoniaklösungen stark verringert werden können.It has now surprisingly been found that a partial or completely saponified stretched acetate silk with increased elongation of about 8 to 16% in the dry and fully 7 to 15% in the wet state thus produced «- can earth, that the saponification with aqueous ammonia solutions at temperatures of preferably is carried out over 80 ° in a pressure vessel. A particular advantage of this process still lies in the fact that the saponification takes much shorter times than at room temperature can be carried out and that the concentrations of the used Ammonia solutions can be greatly reduced.

Beispiel Acetatstreckkunstseidenstränge werden mit der 5- bis iofachen Menge einer wäßrigen Ammoniaklösung in einem Autoklaven von entsprechendem Fassungsvermögen erhitzt. Nach dein Abkühlen werden die Stränge ausgewaschen und getrocknet. Die nachstehende Tabelle gibt Dauer der Behandlung und Temperaturhöhe. Konzentration der Ammoniaklösung und die textilen Daten an. Konzentration Temperatur Versuchs- des Ammoniaks Höhe Dauer Fadentiter Reißfestigkeit in g/den Bruchdehnung in % Vr. in Gewichts- in in Denier prozent oC Stunden trocken naß trocken naß i unbehandeltes Material 412 2,66 - 4,5 2 24 20 44,0 26o 3,32 - 6,o - 24 125 7,0 270 3,56 1,86 10,2 14,9 4 15 125 0,5 259 3,76 2,73 9,5 7,2 5 5 125 0,5 280 3,28 1,11 8,9 5,1 ja unbehandeltes Material 193 3,10 1,84 4,8 6,2 1b 24 ioo 5,0 146 3,74 2,39 8,8 6,4 2a unbehandeltes Material 197 2,84 2,03 5,1 6,2 2b 24 135 1,0 16o 2,23 1,50 15,4 9,4 3 a unbehandeltes Material 116 3,20 2,04 5,7 6,5 3b 24 9o 2,5 86 315 1159 9,8 5,5 Versuch 2 zeigt das Ergebnis der üblichen Verseifung bei Zimmertemperatur,Versuche 3, 4 und 5 sind Beispiele für das Verfahren gemäß der Erfindung.EXAMPLE Stretched acetate strands are heated with 5 to 10 times the amount of an aqueous ammonia solution in an autoclave of the appropriate capacity. After cooling, the strands are washed out and dried. The table below gives the duration of the treatment and the temperature level. Concentration of the ammonia solution and the textile data. Concentration temperature Test of the ammonia level Duration of thread titer Tear strength in g / the elongation at break in% Vr. in weight - in denier percent oC hours dry wet dry wet i untreated material 412 2.66-4.5 2 24 20 44.0 26o 3.32 - 6.00 - 24 125 7.0 270 3.5 6 1.86 10.2 14.9 4 15 125 0.5 259 3.76 2.73 9.5 7.2 5 5 125 0.5 28 0 3.28 1.11 8.9 5.1 yes untreated material 193 3.10 1.84 4.8 6.2 1b 24 ioo 5.0 146 3.74 2.39 8.8 6.4 2a untreated material 197 2.84 2.03 5.1 6.2 2b 24 135 1, 0 16o 2.23 1.50 15.4 9.4 3 a untreated material 116 3.20 2.04 5.7 6.5 3b 24 9o 2.5 86 315 1159 9.8 5.5 Experiment 2 shows the result of the usual saponification at room temperature, experiments 3, 4 and 5 are examples of the process according to the invention.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von teilweise oder ganz verseifter Acetatstreckkunstseide mit verbesserter Dehnbarkeit, dadurch gekennzeichnet, daß die teilweise oder vollständige Verseifung mit wäßrigen Ainmoniaklösungen bei Temperaturen vorzugsweise über 8o° in einem Druckgefäß vorgenommen wird.PATENT CLAIM: Process for the production of partially or completely saponified stretched acetate silk with improved extensibility, characterized in that that the partial or complete saponification with aqueous ammonia solutions Temperatures preferably above 8o ° is carried out in a pressure vessel.
DED134A 1949-10-26 1949-10-26 Process for the production of partially or completely saponified stretched acetate silk with improved extensibility Expired DE806699C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED134A DE806699C (en) 1949-10-26 1949-10-26 Process for the production of partially or completely saponified stretched acetate silk with improved extensibility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED134A DE806699C (en) 1949-10-26 1949-10-26 Process for the production of partially or completely saponified stretched acetate silk with improved extensibility

Publications (1)

Publication Number Publication Date
DE806699C true DE806699C (en) 1951-06-18

Family

ID=7028551

Family Applications (1)

Application Number Title Priority Date Filing Date
DED134A Expired DE806699C (en) 1949-10-26 1949-10-26 Process for the production of partially or completely saponified stretched acetate silk with improved extensibility

Country Status (1)

Country Link
DE (1) DE806699C (en)

Similar Documents

Publication Publication Date Title
DE762964C (en) Process for making cellulose fibers water repellent
DE646529C (en) Process for dyeing vegetable fibers
DE747928C (en) Process for the production of crease-resistant and swell-resistant cellulose or cellulose hydrate textiles
DE941009C (en) Process for the production of artificial threads from viscose
DE547204C (en) Process for the finishing of vegetable textile fibers
DE806699C (en) Process for the production of partially or completely saponified stretched acetate silk with improved extensibility
DE704824C (en) Process for the production of artificial threads or films from cellulose acetate
DE752227C (en) Finishing and sizing agents
DE879147C (en) Process for opening up raw green bast fibers
DE1001802C2 (en) Method for comparing the color absorption of cellulose hydrate fibers and threads
DE492279C (en) Process for the production of fine synthetic threads from viscose
DE898655C (en) Process for the production of threads, fibers, films or other deformation products from viscose with reduced swellability in water and reduced alkali solubility
DE731303C (en) Process for the production of curled rayon
AT139438B (en) Process for finishing wool.
AT149340B (en) Process for the production of patterned transparent effects on textile structures by the localized action of a concentrated, concentrated chlorine zinc solution.
DE2207398C3 (en)
AT154600B (en) Process for the production of patterns on textile fabrics.
AT119020B (en) Process for the finishing of vegetable textile fibers.
AT118610B (en) Process for the production of artificial fibers such as rayon, synthetic wool, staple fiber and the like. like
DE407500C (en) Process for the production of pure cellulose fibers from cellulose-containing materials contaminated by encrusting accompanying substances, such as cellulose and vegetable fibers
AT118594B (en) Process for increasing the ductility and elasticity of artificial threads.
AT110859B (en) Process for the production of new properties of synthetic fibers made from regenerated cellulose.
DE858092C (en) Process for finishing textile fibers
DE433982C (en) Process to give cotton a linen-like appearance
DE676267C (en) Process for the finishing of woolen goods