DE850292C - Process for the transparency of tissues made from regenerated cellulose - Google Patents

Process for the transparency of tissues made from regenerated cellulose

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Publication number
DE850292C
DE850292C DEP23558A DEP0023558A DE850292C DE 850292 C DE850292 C DE 850292C DE P23558 A DEP23558 A DE P23558A DE P0023558 A DEP0023558 A DE P0023558A DE 850292 C DE850292 C DE 850292C
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Prior art keywords
cellulose
transparency
regenerated cellulose
acid
seconds
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DEP23558A
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German (de)
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Ernst Weiss
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Heberlein and Co AG
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Heberlein and Co AG
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06Q—DECORATING TEXTILES
    • D06Q1/00—Decorating textiles
    • D06Q1/02—Producing patterns by locally destroying or modifying the fibres of a web by chemical actions, e.g. making translucent
    • 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
    • D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
    • D06M11/11—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
    • 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
    • D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
    • D06M11/11—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
    • D06M11/155—Halides of elements of Groups 2 or 12 of the Periodic Table
    • 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
    • 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
    • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
    • 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
    • D06M11/51—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 sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/55—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 sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
    • 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
    • D06M11/58—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 nitrogen or compounds thereof, e.g. with nitrides
    • D06M11/67—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 nitrogen or compounds thereof, e.g. with nitrides with cyanogen or compounds thereof, e.g. with cyanhydric acid, cyanic acid, isocyanic acid, thiocyanic acid, isothiocyanic acid or their salts, or with cyanamides; with carbamic acid or its salts
    • 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
    • D06M11/68—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 phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
    • D06M11/70—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 phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Coloring (AREA)

Description

Es ist bekannt, Gewebe aus regenerierter Zellulose durch Behandeln mit Zellulosequellmitteln, beispielsweise mit Schwefelsäure über 420 Be zu transparentieren. Es ist auch vorgeschlagen worden, die Einwirkung solcher Quellmittel durch Zusatzstoffe, z. B. ein- oder mehrwertige Alkohole, heterocyclische Basen, Formaldehyd, Ammonsalze, Harnstoff und daraus abgeleitete Aminoverbindungen, zu mildern und regelmäßiger zu gestalten. Trotz dieser Maßnahmen ist es bisher noch nicht gelungen, einen ähnlich regelmäßigen und hochwertigen Ausfall der Transparentierung wie auf Baumwolle, auf Geweben aus regenerierter Zellulose, beispielsweise auf Viskosemusselin oder Zellwollmusselin, zu erhalten. It is known that tissue made of regenerated cellulose can be made transparent by treatment with cellulose swelling agents, for example with sulfuric acid above 42 0 Be. It has also been proposed to prevent the action of such swelling agents by additives, e.g. B. monohydric or polyhydric alcohols, heterocyclic bases, formaldehyde, ammonium salts, urea and amino compounds derived therefrom, to mitigate and make them more regular. Despite these measures, it has not yet been possible to obtain a similarly regular and high-quality failure of the transparency as on cotton, on fabrics made of regenerated cellulose, for example on viscose muslin or cellulose muslin.

Es hat sich nun überraschenderweise herausgestellt, daß man das gewünschte Ergebnis durch eine Nachbehandlung mit Laugen erzielen kann. Das Verfahren zum Transparentieren von Geweben aus regenerierter Zellulose besteht erfindungsgemäß darin, daß die Gewebe mit Zellulosequellmitteln pergamentiert und anschließend bei gewöhnlicher Temperatur einer an sich nicht pergamentierend wirkenden Laugenbehandlung unterzogen werden, worauf die Lauge möglichst rasch, z. B. durch heißes Auswaschen, entfernt wird. Hierdurch läßt, sich einIt has now been found, surprisingly, that the desired result can be achieved a post-treatment with caustic solutions can be achieved. The process of transparentizing tissues from According to the invention, regenerated cellulose consists in that the tissue with cellulose swelling agents parchmented and then at ordinary temperature one not parchmented per se acting alkali treatment are subjected, whereupon the alkali as quickly as possible, z. B. by hot Wash out, is removed. This lets himself in

wesentlich gleichmäßigerer Ausfall der Transparentierung erzielen, ohne daß eine für praktische Verwendungszwecke störende Versteifung eintritt. Außer zur Herstellung von Unieffekten eignet sich das Verfahren auch zur Erzeugung örtlicher Transparenteffekte unter Verwendung von wasserlöslichen bzw. wasserunlöslichen, gewünschtenfalls gefärbten oder pigmentierten Reserven.achieve much more uniform failure of the transparency without any practical use disturbing stiffening occurs. Except for the production of plain effects is suitable the method also for the production of local transparency effects using water-soluble or water-insoluble, if desired colored or pigmented reserves.

Die durch das erfindungsgemäße Verfahren erzielte Wirkung ist überraschend, da man sich nach den bisherigen Erfahrungen nichts davon versprechen konnte, Kunstseide zu mercerisieren. Für die Kunstseide bestand kein Bedürfnis, das Mercerisieren zum Zweck der Glanzerzeugung anzuwenden, da diese Fasern von sich aus bereits in hohem Maße seidenglänzend sind. Zudem haben bisher alle praktischen Erfahrungen gezeigt, wie heikel eine Behandlung mit starken Alkalien sich auf die empfindliche Kunstseide auswirken müßte und wie sehr die Gefahr einer Faserschädigung zu befürchten war. Eine Mercerisierung, d. h. eine Behandlung mit starker !.auge unter Spannung kam bisher nur in Frage für kunstseidenhaltige Mischgewebe, um der Baumwolle den gewünschten Mercerisierglanz zu verleihen, wobei man ängstlich bemüht war, eine Beeinflussung und Veränderung der Kunstseide durch die Lauge mit geeigneten Mitteln zu verhindern. Wohl ist eine Behandlung mit schwacher Lauge, die sogenannte Laugierung, angewandt worden, um reine Kunstseide oder Zellwollgewebe zu verdichten und ferner eine bessere Entschlichtung oder einen Ausgleich des Farbaufnahmevermögens zu bewirken. Der Zweck ist hier ganz anderer Art wie bei dem Verfahren der vorliegenden Erfindung. Auch eine Nachmercerisation,umTransparenteffekte auf Baumwollgeweben zu verbessern, ist bekanntgeworden, wobei es sich um eine eigentliche Mercerisierung mit NaOH von 300Be unter Streckung handelt. Da eine spezifische Wirkung der Lauge, entsprechend der Mercerisierung von Baumwolle, bei Kunstseide nicht eintritt, konnte von einer analogen Behandlung der Kunstseide nichts erwartet werden.The effect achieved by the process according to the invention is surprising, since experience so far has shown that nothing could be expected of mercerising rayon. There was no need for the artificial silk to use mercerization for the purpose of producing a gloss, since these fibers are inherently silk-gloss to a high degree. In addition, all practical experience so far has shown how delicate a treatment with strong alkalis would have to affect the sensitive rayon and how much the risk of fiber damage was to be feared. Mercerization, i.e. a treatment with strong eyes under tension, was previously only possible for mixed fabrics containing artificial silk, in order to give the cotton the desired mercerizing shine, whereby one was anxious to influence and change the artificial silk by the lye with suitable means impede. A treatment with weak lye, so-called leaching, has been used to compact pure rayon or cellulose fabric and also to achieve better desizing or equalization of the color absorption capacity. The purpose here is quite different from that of the method of the present invention. Post-mercerization in order to improve the transparency effects on cotton fabrics has also become known, this being an actual mercerization with NaOH of 30 0 Be with stretching. Since a specific effect of the lye, corresponding to the mercerization of cotton, does not occur with rayon, nothing could be expected from an analogous treatment of rayon.

Als Ausgangsmaterial für das Verfahren kommen vor allem die feinen Gewebe aus regenerierter Zellulose, wie Zellwollmusselin bzw. Viskosemusselin, oder auch entsprechende Voiles in Frage. Als Pergamentiermittel kommen die bekannten Zellulosequellmittel, wie Schwefelsäure (mit oder ohne Zusätze) über 420 Be, Phosphorsäure über 50° Be, Salzsäure über 200 Be, Chlorzinklösungen über 500Be, Calciumrhodanidlösungen über 2501Be, •in. Betracht, wobei die erforderliche Konzentration von der Reaktionstemperatur abhängt. Zum Nachbehandeln verwendet man vorteilhaft Kalilauge von etwa 300 Be bei Zimmertemperatur. Selbstverständlich kann auch Natronlauge verwendet werden unter Bedingungen, die eine Schädigung der Faser tunlichst ausschließen, z. B. in einer Konzentration von 6 bis io° Be und unter kochend heißem Entlaugen. Diese Bedingungen, die an sich bekannt sind, können jedoch mit Kalilauge leichter eingehalten werden.The starting material for the process is primarily the fine tissue made of regenerated cellulose, such as cellulose muslin or viscose muslin, or corresponding voiles. The well-known cellulose swelling agents, such as sulfuric acid (with or without additives) over 42 0 Be, phosphoric acid over 50 ° Be, hydrochloric acid over 20 0 Be, zinc chloride solutions over 50 0 Be, calcium rhodanide solutions over 25 01 Be, are used as parchment agents. Consideration, the required concentration depending on the reaction temperature. For aftertreatment, it is advantageous to use potassium hydroxide solution of about 30 ° Be at room temperature. Of course, caustic soda can also be used under conditions which exclude damage to the fiber as much as possible, e.g. B. in a concentration of 6 to 10 ° Be and with boiling hot leaching. However, these conditions, which are known per se, can be met more easily with potassium hydroxide solution.

Die nachfolgenden Beispiele dienen der Erläuterung des erfindungsgemäßen Verfahrens, dessen Anwendungsmöglichkeiten damit nicht erschöpft sind.The following examples serve to illustrate the process according to the invention, its Applications are thus not exhausted.

Beispiel 1example 1

Nach den üblichen Methoden vorgereinigter und unter Spannung getrockneter Viskosemusselin wird in breitem Zustand durch Schwefelsäure von 480 Be (bei 150) geführt. Die Temperatur der Säure wird zwischen —1 und ■+ i° gehalten, die Einwirkungszeit beträgt 11 Sekunden. Anschließend wird die Säure mit Wasser ausgewaschen und etwaige Säurerückstände noch mit verdünntem Ammoniak neutralisiert. Das Gewebe wird nun durch Abpressen oder Absaugen vom Überschuß des Wassers befreit, dann 6 Sekunden der Einwirkung von Kalilauge von 300 Be ausgesetzt, mit heißem Wasser entlaugt, mit Schwefelsäure von T0Be abgesäuert und gewaschen. Die Ware kann nun entweder gebläut oder nach den üblichen Methoden gefärbt werden, worauf man sie unter Spannung in Kett- und Schußrichtung trocknet, zweckmäßig wird sie vor dem Trocknen noch gestoßen.Viscose muslin which has been pre-cleaned and dried under tension according to the usual methods is passed in the broad state through sulfuric acid of 48 ° Be (at 15 ° ). The temperature of the acid is kept between -1 and + 1 °, the exposure time is 11 seconds. The acid is then washed out with water and any acid residues are neutralized with dilute ammonia. The tissue is now freed from excess water by squeezing or suctioning it off, then exposed to the action of potassium hydroxide solution of 30 0 Be for 6 seconds, leached with hot water, acidified with sulfuric acid of T 0 Be and washed. The goods can now either be blued or dyed according to the usual methods, whereupon they are dried under tension in the warp and weft directions; it is expedient to push them before drying.

Man erhält so ein weitgehend durchscheinendes, verhältnismäßig wenig versteiftes Gewebe. Klarheit und Gleichmäßigkeit des Gewebebildes sind gegen- go über einer nur mit Säure pergamentierten Ware erheblich verbessert.In this way, a largely translucent, relatively little stiffened fabric is obtained. Clarity and uniformity of the tissue image are the object go considerably improved over a pergamentierten only with acid product.

Beispiel 2Example 2

Mit säure- und alkalibeständigen Farbstoffen bedruckter Viskosemusselin wird 12 Sekunden der Einwirkung von auf -f- 50 gekühlter Schwefelsäure von 470 Be (150) ausgesetzt, dann neutral gewaschen und unter Spannung getrocknet. Nun wird die Ware 10 Sekunden bei 15 bis 200 in Kalilauge von 25° Be eingetaucht, mit heißem Wasser entlaugt, abgesäuert und bis zur neutralen Reaktion gewaschen. Nach dem Abpressen des überschüssigen Wassers wird unter Spannung getrocknet. Das Trocknen der Ware kann auf einem Spannrahmen geschehen.Viscose muslin printed with acid- and alkali-resistant dyes is exposed for 12 seconds to the action of -f- 5 0 sulfuric acid of 47 0 Be (15 0 ), then washed neutral and dried under tension. Now, the goods are immersed for 10 seconds at 15 to 20 0 in potassium hydroxide solution of 25 ° Be, entlaugt with hot water, acidified and washed until neutral. After the excess water has been squeezed off, it is dried under tension. The drying of the goods can be done on a stenter.

Nach der obigen Behandlungsfolge erhält man ein buntes Gewebe mit stark erhöhter Transparenz. In den bedruckten Partien tritt eine Farbvertiefung ein.After the above treatment sequence, a colored fabric with greatly increased transparency is obtained. In the printed areas show a deepening of color.

π · · ιπ · · ι

Bei sp iel 3At game 3

Ein aus hochnaßfesten Zellwollgarnen, beispielsweise Nr. 80 eng., hergestelltes Gewebe wird entschlichtet, geseift, gebleicht, gefärbt und auf einem Spannrahmen abgetrocknet. Nun führt man es durch ein Pergamentierbad folgender Zusammensetzung:A fabric made of high-wet-strength rayon yarn, for example no. 80 eng., Is desized, soaped, bleached, dyed and dried on a stenter. Now you do it a parchment bath of the following composition:

Schwefelsäure (als H2SO4 berechnet) 59,6 %Sulfuric acid ( calculated as H 2 SO 4 ) 59.6%

Harnstoff 14,8%Urea 14.8%

Wasser 25,6%Water 25.6%

100,0%100.0%

Die Temperatur des Bades wird auf 25° gehalten, die Einwirkungszeit beträgt 16 Sekunden. Anschließend wird kalt gewaschen und die feuchte Ware dann mit Kalilauge von 280 Be 8 Sekunden nachbehandelt. Nach dem Entlaugen und WaschenThe temperature of the bath is kept at 25 °, the exposure time is 16 seconds. It is then washed cold and the moist goods are then aftertreated with potassium hydroxide solution of 28 ° Be for 8 seconds. After leaching and washing

wird die Ware ausgestoßen und unter Spannung getrocknet. Vorteilhaft wird die Ware zum Schluß noch kalandriert.the goods are ejected and dried under tension. The goods are advantageous at the end still calendered.

Derart behandelter Zellwollmusselin entspricht imAussehen einem hochwertigen Baumwollorgandy.Cellulose muslin treated in this way corresponds in appearance to a high-quality cotton organdy.

Beispiel 4Example 4

Zellwollmusselin wird nach den üblichen Methoden gesengt, entschlichtet, abgekocht, gebleicht, auf einem Spannrahmen getrocknet und mit einer Reserve folgender Zusammensetzung bedruckt:Cellulose muslin is singed, desized, boiled, bleached, and opened using the usual methods dried in a stenter and printed with a reserve of the following composition:

Titandioxyd
Acetylcellulose
Aceton .
Phenol . .
Wasser .Titanium dioxide
Acetyl cellulose
Acetone.
Phenol. .
Water .

260 g260 g

5oog
150g5oog
150g

1000 g1000 g

Nun wird die Ware in breitem Zustand 10 Sekunden der Einwirkung von Schwefelsäure von 470 Be ausgesetzt. Die Temperatur der Säure soll hierbei auf io° gehalten werden. Nach vollständigem Auswaschen der Säure wird mit Kalilauge von 300 Be 6 Sekunden nachbehandelt, gewaschen, neutralisiert und unter Spannung getrocknet.The product is now exposed to the action of sulfuric acid of 47 0 Be for 10 seconds in the wide state. The temperature of the acid should be kept at 10 °. After the acid has been completely washed out, it is aftertreated with potassium hydroxide solution of 30 ° Be for 6 seconds, washed, neutralized and dried under tension.

Man erhält so kontrastreiche Musterungen von weißen opaken Druckstellen auf transparentem Hintergrund.In this way, high-contrast patterns of white opaque pressure points on transparent ones are obtained Background.

Beispiel 5Example 5

Viskosevoile wird bei io° 15 Sekunden mit Phosphorsäure von 530 Be (bei 150) pergamentiert, anschließend, wie im Beispiel 4 beschrieben, mit KaIilauge nachbehandelt und unter Spannung getrocknet. Es resultiert ein weitgehend transparentiertes, mäßig versteiftes Gewebe.Viskosevoile is pergamentiert at io ° 15 seconds with phosphoric acid of 53 0 Be (15 0), then, after-treated as described in Example 4 with KaIilauge and dried under tension. The result is a largely transparent, moderately stiffened fabric.

Bei sp iel 6At game 6

Viskosemarquisette wird nach den bekannten Methoden vorgereinigt und auf einem Spannrahmen getrocknet. Nun wird die Ware in breitem Zustand durch 6o%ige Schwefelsäure, welcher je Liter 10 ecm 40°/oiger technischer Formaldehyd zugesetzt wurden, geleitet. Die Temperatur der Säure soll o°, die Einwirkungszeit 12 Sekunden betragen. Nach dem Auswaschen der Säure wird unter Spannung getrocknet, worauf mit Natronlauge von 8° Be 5 Sekunden nachbehandelt, heiß gewaschen, abgesäuert und gründlich gespült wird.Viscose marquisette is pre-cleaned according to known methods and placed on a tenter frame dried. Now the goods are in a wide state with 6o% sulfuric acid, which is per liter 10 ecm of 40% technical formaldehyde were added, passed. The temperature of the acid should be o °, the exposure time is 12 seconds. After washing out the acid it is under tension dried, whereupon aftertreated with sodium hydroxide solution of 8 ° Be for 5 seconds, washed hot, acidified and rinsed thoroughly.

Zum Schluß wird das Gewebe in Kett- und Schußrichtung gespannt und getrocknet.
Man erhält ein versteiftes, weitgehend durchsichtiges Gewebe.Finally, the fabric is stretched in the warp and weft directions and dried.
A stiffened, largely transparent fabric is obtained.

Claims (2)

PATENTANSPRÜCHE:PATENT CLAIMS: 1. Verfahren zum Transparentieren von Geweben aus regenerierter Zellulose, dadurch gekennzeichnet, daß diese mit Zellulosequellmitteln pergamentiert und anschließend bei gewöhnlicher Temperatur vorzugsweise unter leichter Spannung einer an sich nicht pergamentierend wirkenden Laugennachbehandlung unterzogen werden, worauf die Lauge möglichst rasch, z. B. durch heißes Auswaschen, entfernt wird.1. A method for transparentizing tissues made from regenerated cellulose, characterized in that that these are parchmented with cellulose swelling agents and then with ordinary ones Temperature preferably under slight tension and not parchment per se acting alkali after-treatment, whereupon the alkali as quickly as possible, z. B. by hot washing. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß durch Reservieren örtliche Effekte erzielt werden.2. The method according to claim 1, characterized in that that local effects are achieved by reserving. O 5551 U.O 5551 U.
DEP23558A 1944-12-27 1948-12-04 Process for the transparency of tissues made from regenerated cellulose Expired DE850292C (en)

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CH604713X 1944-12-27

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US (1) US2516083A (en)
BE (1) BE461347A (en)
CH (1) CH246968A (en)
DE (1) DE850292C (en)
FR (1) FR916769A (en)
GB (1) GB604713A (en)
NL (1) NL60956C (en)

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FR806136A (en) * 1936-04-20 1936-12-08 Cilander Ag Process for finishing linen fabrics or threads
US2174534A (en) * 1936-04-22 1939-10-03 Du Pont Chemical process
US2245123A (en) * 1936-07-31 1941-06-10 Nobel Francaise Soc Fabric printing
US2200792A (en) * 1936-09-11 1940-05-14 Firm Ag Cilander Patterned fabric and method of producing the same
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US2215938A (en) * 1937-05-07 1940-09-24 Raduner & Co Ag Method of producing noncurling stiffened woven fabrics and product thereof
GB516843A (en) * 1937-07-26 1940-01-12 Walter Rotta A process for producing finishing or dressing effects on textiles

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FR916769A (en) 1946-12-16
BE461347A (en)
US2516083A (en) 1950-07-18
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CH246968A (en) 1947-02-15
GB604713A (en) 1948-07-08

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