DE191766C - - Google Patents

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Publication number
DE191766C
DE191766C DENDAT191766D DE191766DA DE191766C DE 191766 C DE191766 C DE 191766C DE NDAT191766 D DENDAT191766 D DE NDAT191766D DE 191766D A DE191766D A DE 191766DA DE 191766 C DE191766 C DE 191766C
Authority
DE
Germany
Prior art keywords
bleaching
white
bath
neutral
superoxides
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.)
Active
Application number
DENDAT191766D
Other languages
German (de)
Publication of DE191766C publication Critical patent/DE191766C/de
Active legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10Bleaching ; Apparatus therefor
    • D21C9/1057Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10Bleaching ; Apparatus therefor
    • D21C9/16Bleaching ; Apparatus therefor with per compounds
    • D21C9/163Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Description

(iUqeTi'l'ii.ill/ ύβό (iUqeTi'l'ii .ill / ύβό

GelöschtTurned off

KAISERLICHESIMPERIAL

Ä. De-2.1913 ZfÄ. De-2.1913 Zf

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

— JVr 191766-KLASSE 55 c. GRUPPE- JVr 191766 CLASS 55 c. GROUP

ALBERT GAGEDOIS in DON b. LILLE, Frankr.ALBERT GAGEDOIS in DON b. LILLE, France.

Verfahren zum Bleichen von Papierstoff mit Superoxyden.Process for bleaching paper stock with superoxides.

Patentiert im Deutschen Reiche vom 29. Juni 1905 ab.Patented in the German Empire on June 29, 1905.

Das Bleichen der Faserstoffe mit Superoxyden ist allgemein bekannt. Mit der Erfindung wird bezweckt, den Bleichprozeß zu verzögern, um ein zu scharfes Einwirken des Sauerstoffes auf die Fasern zu verhindern. Zu diesem Zwecke setzt man nach der Erfindung dem Bleichbade ein Alkalisilikat zu, und zwar unter Temperaturerhöhung, welche für die Zersetzung des Superoxyds von Bedeutung ist. . Das neue Verfahren gestattet, Zeuge von blendendem und reinem Weiß nicht nur wie bisher durch Verwendung von Rohstoffen, die schon weiß waren und keineThe bleaching of fibers with superoxides is well known. With the invention The aim is to delay the bleaching process in order to prevent the To prevent oxygen from reaching the fibers. For this purpose one uses according to the invention an alkali silicate is added to the bleach bath, with an increase in temperature, which is important for the decomposition of the superoxide is. . The new procedure allows one to witness dazzling and pure white not just as before by using raw materials that were already white and none

..■■' wirklichen Flecken besaßen, zu erhalten, sondem auch durch Benutzung von Holz, Hanf, Jute, Flachslilie, Aloe und anderen entsprechenden Pflanzen im natürlichen Zustande, von Hadern, alten Seilen und sonstigen Lumpen ebensogut wie von weißen Spinnereiabfällen, die bisher ausschließlich zur Herstellung weißer Zeuge verwendet worden sind. Um dieses Bleichen von Stoffen, die bisher bei der Herstellung der weißen Zeuge für unbrauchbar zur Erzielung weißen Papiers gehalten worden sind, zu bewerkstelligen, unterwirft man die natürlichen Pflanzenstoffe folgenden, als Vorbereitung für die Bleichung dienenden Verfahren... ■■ 'possessed, maintained, special also by using wood, hemp, jute, flax lily, aloe and other appropriate Plants in their natural state, from rags, old ropes and other rags as well as from white spinning waste, which so far have only been used to produce white witnesses. To this bleaching of fabrics that so far in making the white witness to being unusable for obtaining white paper have been held to accomplish, one subordinates the natural plant substances following procedures in preparation for bleaching.

i. Einer oder mehreren Auslaugungen durch Kalk oder Natron; am Schlüsse dieser Auslaugungen folgt eine vollständige Spülung, zunächst, im Falle der Auslaugung durch Kalk, in angesäuertem und sodann in frischem reinen Wasser, so daß ein neutrales, vollkommen reaktionsfreies Zeug erzielt wird.i. One or more leaches with lime or soda; at the end of these leaches a full rinse follows, initially, in the case of leaching through Lime, in acidified and then in fresh, pure water, so that a neutral, perfect unreactive stuff is achieved.

2. Falls es sich um Holzzeug handelt, einer Chlorung, gefolgt von erforderlichen Waschungen in reinem Wasser, um ein neutrales Zeug zu erhalten.2. If it is wood, chlorination, followed by necessary Washes in pure water to get a neutral stuff.

Man geht sodann zum eigentlichen Bleichen über, indem man die neutralen Stoffe 4 bis 6 Stunden in einem folgendermaßen erhaltenen Bad umrührt:One then moves on to the actual bleaching by using the neutral substances 4 to Stirred for 6 hours in a bath obtained as follows:

In der zum gründlichen Eintauchen des ausgelaugten Zeuges pflanzlichen Ursprungs nötigen Menge reinen kalten Wassers löst man '/2 bis 3 kg Alkalisuperoxyd auf 100 kg Stoff je nach dessen Qualität und je nachdem es für das Bleichen vorbereitet ist, auf. Zu dieser Lösung setzt man 10 bis 30 kg neutrale Alkalisilikate von 35 ° Be. auf 100 kg Stoff hinzu.In the amount of pure cold water necessary for the thorough immersion of the leached product of vegetable origin, dissolve 1/2 to 3 kg of alkali peroxide per 100 kg of fabric, depending on its quality and depending on how it is prepared for bleaching. 10 to 30 kg of neutral alkali metal silicates of 35 ° Be are added to this solution. to 100 kg of substance.

Das Silikat bezweckt, die Dichtigkeit des Bades zu vermehren und um die Teilchen des Zeuges eine Schutzhülle zu bilden, die sie gegen eine allzu heftige Oxydation schützt, wie sie beim Freiwerden des aus dem Superoxyd sich bildenden Sauerstoffs auftritt.The purpose of the silicate is to increase the tightness of the bath and around the particles to form a protective cover of the stuff that protects it against excessive oxidation, as it occurs when the oxygen formed from the superoxide is released.

Während unaufhörlichen Umrührens steigert man die Temperatur allmählich bis auf ungefähr 8o°. Diese Erhöhung der Temperatur dient einzig zur Zersetzung des Superoxyds, indem das Bad kein Reagens enthält, derart, daß man so die Oxvdation in derWhile stirring incessantly, the temperature is gradually increased to about 8o °. This increase in temperature serves only to decompose the superoxide, in that the bath contains no reagent, so that the oxidation in the

ganzen Masse allmählich regelt, ohne die Widerstandsfähigkeit der mit Alkalisilikaten versetzten Fasern oder Teilchen des Stoffes zu beeinträchtigen. .whole mass gradually regulates without the resistance of the alkali silicates to affect displaced fibers or particles of the fabric. .

Dann geht man zu einer Waschung in kaltem reinen Wasser über. "■■.." ;Then one goes to washing in cold pure water. "■■ ..";

Hierauf unterwirft man die gebleichten Stoffe folgenden bekannten Verfahren: ■The bleached fabrics are then subjected to the following known processes: ■

i. Einem Einseifen in einem mit dem zugehörigen Rührwerk ausgestatteten Bottich oder Holländer.i. A lathering in a tub equipped with the associated agitator or Dutch.

2. Einer Chlorung, auf die die nötigen Waschungen folgen, um jede Spur von Chlor zu beseitigen.2. A chlorination followed by the necessary washings to remove any trace of chlorine to eliminate.

Claims (1)

Patent-An Spruch :Patent-An saying: Verfahren zum Bleichen von Papierstoff mit Superoxyden,. dadurch gekennzeichnet, daß 'man. dem, Bleichbade unter Temperaturerhöhung — behufs Zersetzung des Superoxyds -— ein Alkalisilikat zusetzt.Process for bleaching paper stock with superoxides. characterized, that he. dem, bleaching bath with increasing temperature - for the purpose of decomposition of the Superoxyds - an alkali silicate added.
DENDAT191766D Active DE191766C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191766T

Publications (1)

Publication Number Publication Date
DE191766C true DE191766C (en)

Family

ID=5730495

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT191766D Active DE191766C (en)

Country Status (2)

Country Link
DE (1) DE191766C (en)
FR (1) FR360158A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE911421C (en) * 1937-08-18 1954-05-13 Phrix Werke Ag Process for the production of artificial structures from viscose
DE931690C (en) * 1942-12-24 1955-08-16 Degussa Process for bleaching wood pulp and other mechanically produced fiber material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE911421C (en) * 1937-08-18 1954-05-13 Phrix Werke Ag Process for the production of artificial structures from viscose
DE931690C (en) * 1942-12-24 1955-08-16 Degussa Process for bleaching wood pulp and other mechanically produced fiber material
DE932762C (en) * 1942-12-24 1955-09-08 Degussa Process for bleaching wood pulp and other mechanically produced fiber material

Also Published As

Publication number Publication date
FR360158A (en) 1906-04-14

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