DE415583C - Bleaching of wool - Google Patents

Bleaching of wool

Info

Publication number
DE415583C
DE415583C DEC33836D DEC0033836D DE415583C DE 415583 C DE415583 C DE 415583C DE C33836 D DEC33836 D DE C33836D DE C0033836 D DEC0033836 D DE C0033836D DE 415583 C DE415583 C DE 415583C
Authority
DE
Germany
Prior art keywords
wool
bleaching
solution
bisulfite
strong
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
DEC33836D
Other languages
German (de)
Inventor
Dr Ludwig Loechner
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.)
CHEM FAB GRIESHEIM ELEKTRON FA
Original Assignee
CHEM FAB GRIESHEIM ELEKTRON FA
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 CHEM FAB GRIESHEIM ELEKTRON FA filed Critical CHEM FAB GRIESHEIM ELEKTRON FA
Priority to DEC33836D priority Critical patent/DE415583C/en
Application granted granted Critical
Publication of DE415583C publication Critical patent/DE415583C/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
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/30—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using reducing agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Description

Bleichen von Wolle. Es ist bekannt, Wolle mit schwefliger Säure zu bleichen, wobei entweder im Schwefelkasten mit durch Verbrennen von Schwefel gewonnenem, gasförmigen Schwefeldioxyd oder mit einer durch Einleiten von Schwefeldioxyd in Wasser erhaltenen Lösung von schwefliger Säure oder mit einer starken säurevermischter Bisulfitlösung, jedenfalls also stets mit freier, schwefliger Säure, gearbeitet wird. Bei sämtlichen bisher bekannten Verfahren war also eine gesonderte Bleiche notwendig.Bleaching of wool. It is known to add sulphurous acid to wool bleaching, either in the sulfur box with sulfur obtained by burning, gaseous sulfur dioxide or with a by introducing sulfur dioxide into Water obtained solution of sulphurous acid or mixed with a strong acid Bisulfite solution, in any case always with free, sulphurous acid, worked will. In all of the previously known processes, there was a separate bleaching process necessary.

Bei Anwendung von nicht besonders angesäuerten Bisulfitlösungen hielt man es bisher für notwendig, die Wolle viele Stunden lang der Einwirkung von starken Bisulfitlaugen (von 2o und mehr Graden Baume) auszusetzen und danach gegebenenfalls noch eine Säuerung folgen zu lassen.If not particularly acidic bisulfite solutions were used it has hitherto been necessary to keep the wool for many hours of exposure to strong To suspend bisulphite lye (of 20 and more degrees Baume) and then if necessary to have another acidification follow.

Gemäß der vorliegenden Erfindung wird das Bleichgut dagegen mit stark verdünnter, nicht mit einer starken --säurevermischter Bisulfitlösung behandelt, und diese Lösung nach kurzer Einwirkung, etwa durch Abquetschen, wieder entfernt. Es genügt z. B. die Anwendung einer Bisulfitlösung von etwa o, 5 bis i - B6 und eine Einwirkungsdauer von wenigen Minuten, um die gewünschte Bleichwirkung zu erreichen. Man kann die Behandlung unmittelbar an das übliche -\Vaschverfahren anschießen. Zur Erläuterung dienen zwei Beispiele. i. Bleichen von Wolle im Anschluß an das Waschverfahren.On the other hand, according to the present invention, the bleached material becomes strong with diluted, not treated with a strong bisulfite solution mixed with acid, and this solution is removed again after a short exposure, for example by squeezing. It is enough z. B. the use of a bisulfite solution of about 0.5 to i - B6 and an exposure time of a few minutes to achieve the desired bleaching effect. The treatment can be followed immediately by the usual - \ Vasch procedure. Two examples serve to illustrate this. i. Bleaching of wool following that Washing method.

Wolle, die im Leviathan oder entsprechenden Apparaten gewaschen worden ist, läßt man unmittelbar daran anschließend durch ein Natriumbisulfitbad von o,5°Be gehen, das warm oder kalt gehalten werden kann, quetscht ab und trocknet. Für den Durchgang genügt eine Zeit von 2 bis 5 '.Minuten, so daß also eine Unterbrechung des stetigen Arbeitsganges unnötig ist.Wool that has been washed in the Leviathan or equivalent is left immediately thereafter through a sodium bisulfite bath of 0.5 ° Be walking, which can be kept warm or cold, squeezes and dries. For the A passage of 2 to 5 minutes is sufficient, so that there is an interruption of the continuous work process is unnecessary.

z. Bleichen der Wolle als Kammzugband. Die Bänder durchlaufen nach dem üblichen Seifenbad und erfolgter Quetschung zwischen Quetschwalzen das Bisulfitbad, das wiederum o,5 bis i"Be stark ist und schwach erwärmt sein kann. Man quetscht ab und trocknet, wie üblich, auf geheizten Kupferzylindern.z. Bleaching the wool as a sliver. The tapes run through after the usual soap bath and after squeezing between squeezing rollers, the bisulfite bath, which in turn is o.5 to i "Be strong and can be slightly heated. One squeezes and, as usual, dry on heated copper cylinders.

Claims (1)

PATEN T-A,N SPRUCH: Bleichen von Wolle, dadurch gekennzeichnet, daß beliebig vorbehandelte, ungebleichte Wolle mit kalter oder schwach erwärmter, stark verdünnter Bisulfitlösung getränkt, kurz darauf von der überschüssigen Lösung, etwa durch Abquetschen, befreit und dann getrocknet wird.PATEN TA, N SPRUCH: Bleaching of wool, characterized in that any pretreated, unbleached wool is impregnated with cold or slightly heated, strongly diluted bisulfite solution, shortly thereafter freed from the excess solution, for example by squeezing, and then dried.
DEC33836D 1923-08-01 1923-08-01 Bleaching of wool Expired DE415583C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC33836D DE415583C (en) 1923-08-01 1923-08-01 Bleaching of wool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC33836D DE415583C (en) 1923-08-01 1923-08-01 Bleaching of wool

Publications (1)

Publication Number Publication Date
DE415583C true DE415583C (en) 1925-07-02

Family

ID=7021030

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC33836D Expired DE415583C (en) 1923-08-01 1923-08-01 Bleaching of wool

Country Status (1)

Country Link
DE (1) DE415583C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078731B (en) * 1955-03-28 1960-03-31 American Viscose Corp Process for the production of cellulose hydrate structures which are resistant to discoloration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078731B (en) * 1955-03-28 1960-03-31 American Viscose Corp Process for the production of cellulose hydrate structures which are resistant to discoloration

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