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DE488670C - Process for the production of cellulose xanthate solutions - Google Patents

Process for the production of cellulose xanthate solutions

Info

Publication number
DE488670C
DE488670C DEH84015D DEH0084015D DE488670C DE 488670 C DE488670 C DE 488670C DE H84015 D DEH84015 D DE H84015D DE H0084015 D DEH0084015 D DE H0084015D DE 488670 C DE488670 C DE 488670C
Authority
DE
Germany
Prior art keywords
production
xanthate
solutions
cellulose
cellulose xanthate
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
DEH84015D
Other languages
German (de)
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.)
Herminghaus & Co GmbH
Original Assignee
Herminghaus & Co GmbH
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 Herminghaus & Co GmbH filed Critical Herminghaus & Co GmbH
Priority to DEH84015D priority Critical patent/DE488670C/en
Application granted granted Critical
Publication of DE488670C publication Critical patent/DE488670C/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
    • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Description

Verfahren zur Herstellung von Cellulosexanthog.enatlösungen Cellulosetanthogenatlösungen werden bisher derart hergestellt, daß man mehr oder minder orydativ abgebaute Alkalicellulose mit Schwefelkohlenstoff behandelt und das entstandene Xanthogenat löst.Process for the production of cellulose xanthogenate solutions Cellulose tetanthogenate solutions have hitherto been produced in such a way that alkali cellulose, which is more or less oxidatively degraded, is used treated with carbon disulfide and the resulting xanthate dissolves.

Es hat sich nun gezeigt, daß: die Homogenität von Viskoselösungen sich beträchtlich steigern läßt, wenn die Reifung der auf Xanthogenat zu verarbeitenden Alkalicellulose bei Gegenwart von anorganischen Reduktionsmitteln erfolgt.It has now been shown that: the homogeneity of viscose solutions can be increased considerably if the ripening of the xanthate to be processed Alkali cellulose takes place in the presence of inorganic reducing agents.

Der besondere technische Effekt des Verfahrens besteht darin, daß der durch Zusatz von reduzierenden Stoffen verminderte oxydative Abbau des Zellstoffes in Verbindung mit dem Gehalt an reduzierenden Stoffen selbst eine solche Veränderung der Xanthogenatlösung oder eine solche Richtung der Polymerisation der Xanthogenatmoleküle bewirkt, daß die Xanthogenatlösungen länger haltbar sind als die gewöhnlichen Xanthogenatlösungen und ein wesentlich größerer Intervall für die Verspinnbarkeit der entstandenen Xanthogenatlösung erreicht wird.The special technical effect of the process is that the reduced oxidative degradation of the cellulose due to the addition of reducing substances in connection with the content of reducing substances itself such a change the xanthate solution or such a direction of the polymerization of the xanthate molecules causes the xanthate solutions to have a longer shelf life than the usual xanthate solutions and a much larger interval for the spinnability of the resulting xanthate solution is achieved.

Das Verfahren kann praktisch beispielsweise derart ausgeführt werden, daß man der Alkalicellulose während des Zerfaserns reduzierende Körper zufügt. Ausführungsbeispiel Man preßt a kg in der üblichen Weise mercerisierten Zellstoffes auf 6,2 kg ab und zeiTasert ihn unter Zugabe einer konzentrierten Lösung von 3oo g Na-Sulfit mit einem SO-Gehalt von q.5o,o bis zu dem gewünschten Feinheitsgrad. Darauf läßt man die Alkalicellulose reifen und führt sie mit Schwefelkohlenstoff in Xanthogenat sber.In practice, the method can be carried out, for example, in such a way that that reducing bodies are added to the alkali cellulose during the defibration process. Embodiment A kg of mercerized pulp is pressed in the usual way to 6.2 kg and zeiTasert it with the addition of a concentrated solution of 300 g Na sulfite with a SO content of q.5o, o up to the desired degree of fineness. The alkali cellulose is left on it mature and lead them to xanthate cancer with carbon disulfide.

Man hat zwar bereits vorgeschlagen, Alkalicellulose mit Natriumsulfit und Zinkoxyd zur Herstellung besonderer Produkte zu mischen. Mit diesem Verfahren hat das vorliegende Verfahren nichts zu tun, weil dort eine Vorreife der Alkalicellulose nicht vorgenommen wird. Es ist allerdings theoretisch möglich, daß bei dem Mischen .eine geringe Vorreife bereits stattfindet. Auf diese erstreckt sich jedoch das vorliegende Verfahren nicht.It has already been proposed to use alkali cellulose with sodium sulfite and zinc oxide to make special products. With this procedure the present process has nothing to do because there is a pre-ripening of the alkali cellulose is not made. However, it is theoretically possible that when mixing . a low level of pre-maturity is already taking place. However, this extends to these present proceedings not.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Cellulosexanthogenatlösungen aus einer nach dem Zerfasern einer Reifung unterworfenen Alkalicellulose, dadurch gekennzeichnet, daß die Reifung der auf Xanthogenat zu verarbeitenden Alka,licellu.-lose in. Gegenwart von anorganischen Reduktionsmitteln erfolgt. PATENT CLAIM: A process for the production of cellulose xanthate solutions from an alkali cellulose which is subjected to ripening after fiberization, characterized in that the ripening of the alkali, licellu.-lose to be processed on xanthate takes place in the presence of inorganic reducing agents.
DEH84015D 1921-01-29 1921-01-29 Process for the production of cellulose xanthate solutions Expired DE488670C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH84015D DE488670C (en) 1921-01-29 1921-01-29 Process for the production of cellulose xanthate solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH84015D DE488670C (en) 1921-01-29 1921-01-29 Process for the production of cellulose xanthate solutions

Publications (1)

Publication Number Publication Date
DE488670C true DE488670C (en) 1930-01-07

Family

ID=7164126

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH84015D Expired DE488670C (en) 1921-01-29 1921-01-29 Process for the production of cellulose xanthate solutions

Country Status (1)

Country Link
DE (1) DE488670C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297850B (en) * 1964-08-05 1969-06-19 Kalle Ag Stabilization of cellulose against degradation in an alkaline medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297850B (en) * 1964-08-05 1969-06-19 Kalle Ag Stabilization of cellulose against degradation in an alkaline medium

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