EP0086898B1 - Aqueous suspensions of peroxydisulfates and their use as oxidative desizing agents in textiles sized with starch - Google Patents

Aqueous suspensions of peroxydisulfates and their use as oxidative desizing agents in textiles sized with starch Download PDF

Info

Publication number
EP0086898B1
EP0086898B1 EP82111950A EP82111950A EP0086898B1 EP 0086898 B1 EP0086898 B1 EP 0086898B1 EP 82111950 A EP82111950 A EP 82111950A EP 82111950 A EP82111950 A EP 82111950A EP 0086898 B1 EP0086898 B1 EP 0086898B1
Authority
EP
European Patent Office
Prior art keywords
desizing
water
starch
peroxydisulfate
peroxydisulfates
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
EP82111950A
Other languages
German (de)
French (fr)
Other versions
EP0086898A1 (en
Inventor
Werner Dr. Streit
Linda Witt
Heinz-Dieter Angstmann
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to AT82111950T priority Critical patent/ATE15916T1/en
Publication of EP0086898A1 publication Critical patent/EP0086898A1/en
Application granted granted Critical
Publication of EP0086898B1 publication Critical patent/EP0086898B1/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
    • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
    • D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
    • D06L1/14—De-sizing

Definitions

  • Peroxydisulfates have long been known as oxidizing agents for the desizing of textiles sized with starch. From AT-A-281 743 it is known to carry out such desizing processes with alkali or ammonium peroxydisulfate solutions at pH values of approximately 10.
  • DE-A-2 913 177 discloses an oxidative desizing agent which consists of 10 to 80% by weight of a surfactant and 20 to 90% by weight of potassium peroxydisulfate.
  • DE-B-2814354 discloses an oxidative desizing process in which peroxydisulfate is used as a desizing agent together with water-soluble polymers of acrylic acid.
  • Solid products such as peroxydisulfate or semi-solid (pasty) products according to DE-A-2 913177 are not particularly popular with customers because of the difficult metering technology, and so the object of the present invention was to put the peroxydisulfate into a storage-stable, if possible to transfer a viscous and easily dosed form, which, like the previously proposed fixed specifications, guarantees perfect or, if possible, even better oxidative desizing.
  • the peroxydisulfate in this suspension does not decompose, despite the presence of water, if this water contains additional potassium ions.
  • These potassium ions apparently act on the solubility product, which applies to potassium peroxydisulfate, in such a way that the peroxydisulfate becomes practically insoluble under the conditions of storage in water, and is therefore in finely dispersed form and is not attacked by the water. Only under the conditions of desizing, under which the peroxydisulfate is present in a large dilution, does it dissolve and can become active in the intended sense.
  • the suspensions according to the invention necessarily contain potassium peroxydisulfate, polymers or copolymers of acrylic acid and / or maleic acid and the water containing additional potassium ions.
  • the potassium peroxydisulfate is preferably present in the suspension in an amount of 15 to 40, especially 20 to 30% by weight, based on the suspension.
  • the polymers or copolymers of acrylic acid or maleic acid are understood to be those which are water-soluble, namely polyacrylic acid and polymaleic acid itself, then as copolymers preferably those which contain up to 50% by weight of copolymerizable monoethylenically unsaturated compounds copolymerized with acrylic acid or maleic anhydride, e.g. . B. methacrylic acid, acrylic acid, methacrylic acid Ci to -C 4 alkyl esters, copolymers of maleic acid with methyl vinyl ether, vinyl acetate, styrene, acrylic acid or methacrylic acid. Further copolymers are mentioned in the aforementioned DE-B-2 814 354, to which reference is expressly made here. However, polyacrylic acid and polymaleic acid are of particular technical interest.
  • All polymers should have Fikentscher K values of 8 to 30, preferably 10 to 20. They are preferably used in amounts of 2 to 35, especially 9 to 30% by weight.
  • the additional K ⁇ ions preferably originate from compounds which provide potassium ions and are capable of helping to set the required pH of at least 5, ie primarily KOH, potash or K 2 0. In addition, others such as K 2 S0 4 , potassium phosphate or KCI can be used.
  • the potassium compounds are contained in the aqueous phase at 12 to 65% by weight. This essentially corresponds to at least the saturation concentration, ie the exact percentages depend on the potassium compound used within the limits specified above.
  • This system already represents a storage-stable and easy-to-dose liquid suspension that can be used successfully in desizing fleets.
  • Suspensions which can be metered even better and can even be pumped are obtained if, based on the newly formed suspension, preferably up to 75% by weight, especially 25 to 45% by weight, of anionic surfactants according to the definition are added to the above-mentioned suspensions.
  • anionic surfactants are primarily acidic phosphoric or sulfuric acid esters of Ca to C 2 o-alkanols or their ethoxylates with 1 to 7 ethylene oxide units.
  • C io - to C 2o alkane sulfonates, and alkylbenzene sulfonates, and sulfated alkyl phenol ethoxylates can be used as anionic surfactants.
  • nonionic surfactants can also be present (preferably up to 40% by weight), and C 8 to C 20 alkanol ethoxylates with 1 to 10 ethylene oxide groups are particularly mentioned here.
  • the suspensions built up in this way are very useful as oxidative desizing agents for textile materials sized with starch. They are generally added to the desizing liquors in amounts of 4 to 20, preferably 6 to 13 g / 1 desizing liquor. Depending on the amount of surfactant in the persulfate suspensions, the desizing liquors also contain additional wetting agents and detergents. If the proportion of surfactant in the suspensions is relatively high, the additional wetting agents and detergents can be dispensed with.
  • the mixtures were stored at 50 ° C or 80 ° C to check their stability.
  • the respective persulfate content was determined titrimetrically. 1 g of the mixture was dissolved in 50 ml of H 2 O / isopropanol (40:10) and 50 ml of KJ solution (concentration: 300 g / l) were added. After fifteen minutes at room temperature, titration was carried out with 0.1 N sodium thiosulfate solution until it turned colorless.
  • the K 2 S 2 0s content was monitored at a storage temperature of 50 ° C.
  • the comparative sample showed a sufficient desizing effect (Tegewa value 8) only immediately after production at an amount of 10 g / l in the desizing liquor under otherwise the same conditions as in Example 1. After seven days of storage, only a Tegewa value of 4 was achieved during desizing.
  • the mixture was used for oxidative desizing.
  • Example 3 The mixtures from Example 3 and Example 4 gave Tegewa values of 8 to 9 when 6 g / l were added to the desizing liquor in the case of Bw nettle and Bw twill fabrics. A liquor absorption of 100% and a liquor temperature of 100 to 130 were obtained ° C and a dwell time of 10 minutes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

Water-containing peroxydisulfate suspensions containing potassium peroxydisulfate, a water-soluble polymer or copolymer of acrylic acid and/or maleic acid, with or without an anionic surfactant, where appropriate mixed with a non-ionic surfactant, and water, in which the aqueous phase contains from 12 to 65% by weight of not less than one other dissolved compound which keeps the system at a pH of not less than 5 and is a source of potassium ions.

Description

Peroxydisulfate sind als oxidativ wirkende Mittel zur Entschlichtung von mit Stärke geschlichtetem Textilgut schon lange bekannt. Aus der AT-A-281 743 ist bekannt, mit Alkali- oder Ammoniumperoxydisulfatlösungen bei pH-Werten von ca. 10 solche Entschlichtungsprozesse durchzuführen. Aus der DE-A-2 913 177 ist ein oxidatives Entschlichtungsmittel bekannt, das aus 10 bis 80 Gew.-% eines Tensids und 20 bis 90 Gew.-% Kaliumperoxydisulfat besteht. Aus der DE-B-2814354 kennt man schließlich ein oxidatives Entschlichtungsverfahren, bei dem man Peroxydisulfat zusammen mit wasserlöslichen Polymerisaten der Acrylsäure als Entschlichtungsmittel einsetzt.Peroxydisulfates have long been known as oxidizing agents for the desizing of textiles sized with starch. From AT-A-281 743 it is known to carry out such desizing processes with alkali or ammonium peroxydisulfate solutions at pH values of approximately 10. DE-A-2 913 177 discloses an oxidative desizing agent which consists of 10 to 80% by weight of a surfactant and 20 to 90% by weight of potassium peroxydisulfate. Finally, DE-B-2814354 discloses an oxidative desizing process in which peroxydisulfate is used as a desizing agent together with water-soluble polymers of acrylic acid.

Allen diesen Verfahren ist gemein, daß die Mittel in fester Form gelagert und dosiert werden müssen, da Peroxydisulfate, wenn sie in wäßriger Lösung vorliegen, infolge Zersetzung ihre Aktivität ziemlich rasch verlieren, auch wenn die Lösung schwach alkalisch eingestellt wird, wie dies zum Beispiel mit den Mitteln gemäß der DE-B-2 814 354 der Fall wäre.All of these processes have in common that the agents must be stored and metered in solid form, since peroxydisulfates, if they are in aqueous solution, lose their activity quite rapidly as a result of decomposition, even if the solution is made slightly alkaline, as is the case, for example, with the means according to DE-B-2 814 354 would be the case.

Feste Produkte, wie Peroxydisulfat, oder halbfeste (pastöse) Produkte gemäß der DE-A-2 913177 sind aber wegen der schwierigen Dosiertechnik bei der Kundschaft nicht sonderlich beliebt, und so bestand die Aufgabe der vorliegenden Erfindung darin, das Peroxydisulfat in eine lagerstabile, möglichst dünnflüssige und leicht dosierbare Form zu überführen, die wie die bisher vorgeschlagenen festen Spezifikationen eine einwandfreie oder möglichst noch bessere oxidative Entschlichtung gewährleistet.Solid products such as peroxydisulfate or semi-solid (pasty) products according to DE-A-2 913177 are not particularly popular with customers because of the difficult metering technology, and so the object of the present invention was to put the peroxydisulfate into a storage-stable, if possible to transfer a viscous and easily dosed form, which, like the previously proposed fixed specifications, guarantees perfect or, if possible, even better oxidative desizing.

Die Lösung der Aufgabe stellen nun wasserhaltige Suspensionen von Kaliumperoxydisulfat dar, wie sie in den Patentansprüchen 1 und 2 definiert sind.The solution to the problem is now water-containing suspensions of potassium peroxydisulfate, as defined in claims 1 and 2.

Es hat sich überraschenderweise herausgestellt, daß sich das Peroxydisulfat in dieser Suspension trotz der Anwesenheit von Wasser nicht zersetzt, wenn dieses Wasser zusätzliche Kaliumionen enthält. Diese Kaliumionen wirken offenbar auf das Löslichkeitsprodukt, das für Kaliumperoxydisulfat gilt, in einer Weise ein, daß das Peroxydisulfat unter den Bedingungen der Lagerung in Wasser praktisch unlöslich wird, somit in feindisperser Form vorliegt und durch das Wasser nicht angegriffen wird. Erst unter den Bedingungen der Entschlichtung, unter denen das Peroxydisulfat in großer Verdünnung vorliegt, löst es sich auf und kann im bestimmungsgemäßen Sinn aktiv werden.It has surprisingly been found that the peroxydisulfate in this suspension does not decompose, despite the presence of water, if this water contains additional potassium ions. These potassium ions apparently act on the solubility product, which applies to potassium peroxydisulfate, in such a way that the peroxydisulfate becomes practically insoluble under the conditions of storage in water, and is therefore in finely dispersed form and is not attacked by the water. Only under the conditions of desizing, under which the peroxydisulfate is present in a large dilution, does it dissolve and can become active in the intended sense.

Die erfindungsgemäßen Suspensionen enthalten zwingend Kaliumperoxydisulfat, Polymerisate oder Copolymerisate der Acrylsäure und/oder Maleinsäure und das zusätzliche Kaliumionen enthaltende Wasser. Das Kaliumperoxydisulfat ist in der Suspension vorzugsweise zu 15 bis 40, speziell 20 bis 30 Gew.-% - bezogen auf die Suspension - enthalten.The suspensions according to the invention necessarily contain potassium peroxydisulfate, polymers or copolymers of acrylic acid and / or maleic acid and the water containing additional potassium ions. The potassium peroxydisulfate is preferably present in the suspension in an amount of 15 to 40, especially 20 to 30% by weight, based on the suspension.

Unter den Polymerisaten oder Copolymerisaten der Acrylsäure oder Maleinsäure versteht man solche, die wasserlöslich sind, und zwar Polyacrylsäure und Polymaleinsäure selbst, sodann als Copolymerisate vorzugsweise solche, die bis zu 50 Gew.-% mit Acrylsäure oder Maleinsäureanhydrid copolymerisierbare monoethylenisch ungesättigte Verbindungen einpolymerisiert enthalten, z. B. Methacrylsäure, Acrylsäure-, Methacrylsäure-Ci- bis -C4-alkylester, Copolymerisate der Maleinsäure mit Methylvinylether, Vinylacetat, Styrol, Acrylsäure oder Methacrylsäure. Weitere Copolymerisate sind in der eingangs genannten DE-B-2 814 354 genannt, auf die hier ausdrücklich Bezug genommen wird. Von technisch besonderem Interesse sind aber Polyacrylsäure und Polymaleinsäure.The polymers or copolymers of acrylic acid or maleic acid are understood to be those which are water-soluble, namely polyacrylic acid and polymaleic acid itself, then as copolymers preferably those which contain up to 50% by weight of copolymerizable monoethylenically unsaturated compounds copolymerized with acrylic acid or maleic anhydride, e.g. . B. methacrylic acid, acrylic acid, methacrylic acid Ci to -C 4 alkyl esters, copolymers of maleic acid with methyl vinyl ether, vinyl acetate, styrene, acrylic acid or methacrylic acid. Further copolymers are mentioned in the aforementioned DE-B-2 814 354, to which reference is expressly made here. However, polyacrylic acid and polymaleic acid are of particular technical interest.

Alle Polymerisate sollen K-Werte nach Fikentscher von 8 bis 30, vorzugsweise 10 bis 20 aufweisen. Sie kommen vorzugsweise in Mengen von 2 bis 35, speziell 9 bis 30 Gew.-% zum Einsatz.All polymers should have Fikentscher K values of 8 to 30, preferably 10 to 20. They are preferably used in amounts of 2 to 35, especially 9 to 30% by weight.

An Wasser, das die zusätzlichen K⊕-lonen enthält, benötigt man vorzugsweise 5 bis 35 Gew.-%. Die zusätzlichen K⊕-lonen stammen bevorzugt von solchen Kaliumionen liefernden Verbindungen, welche den geforderten pH-Wert von mindestens 5 einstellen zu helfen in der Lage sind, also vornehmlich KOH, Pottasche oder K20. Daneben können auch andere, wie K2S04, Kaliumphosphat oder KCI eingesetzt werden. Die Kaliumverbindungen sind in der wäßrigen Phase zu 12 bis 65 Gew.-% enthalten. Dies entspricht im wesentlichen mindestens der Sättigungskonzentration, d. h. die genauen prozentualen Anteile richten sich innerhalb der oben angegebenen Grenzen nach der jeweils eingesetzten Kaliumverbindung.Of water which contains the additional K vorzugsweise ions, one needs preferably 5 to 35 wt .-%. The additional K⊕ ions preferably originate from compounds which provide potassium ions and are capable of helping to set the required pH of at least 5, ie primarily KOH, potash or K 2 0. In addition, others such as K 2 S0 4 , potassium phosphate or KCI can be used. The potassium compounds are contained in the aqueous phase at 12 to 65% by weight. This essentially corresponds to at least the saturation concentration, ie the exact percentages depend on the potassium compound used within the limits specified above.

Dieses System stellt bereits eine lagerstabile und gut dosierbare flüssige Suspension dar, die in Entschlichtungsflotten mit Erfolg einsetzbar ist.This system already represents a storage-stable and easy-to-dose liquid suspension that can be used successfully in desizing fleets.

Zu noch besser dosierbaren und sogar pumpbaren Suspensionen gelangt man, wenn den obengenannten Suspensionen noch - bezogen auf die neu entstehende Suspension - vorzugsweise bis zu 75 Gew.-%, speziell 25 bis 45 Gew.-%, an definitionsgemäßen anionischen Tensiden zugesetzt werden. Es sind dies vor allem saure Phosphor- oder Schwefelsäureester von Ca- bis C2o-Alkanolen oder deren Ethoxylaten mit 1 bis 7 Ethylenoxid-Einheiten. Auch Cio- bis C2o-Alkansulfonate und Alkylbenzolsulfonate sowie sulfatierte Alkylphenolethoxylate können als anionische Tenside eingesetzt werden. Schließlich können, jedoch nicht ausschließlich, auch nichtionische Tenside anwesend sein (vorzugsweise bis zu 40 Gew.-%), und es seien hier vor allem C8- bis C20-Alkanolethoxylate mit 1 bis 10 Ethylenoxidgruppen genannt.Suspensions which can be metered even better and can even be pumped are obtained if, based on the newly formed suspension, preferably up to 75% by weight, especially 25 to 45% by weight, of anionic surfactants according to the definition are added to the above-mentioned suspensions. These are primarily acidic phosphoric or sulfuric acid esters of Ca to C 2 o-alkanols or their ethoxylates with 1 to 7 ethylene oxide units. Also C io - to C 2o alkane sulfonates, and alkylbenzene sulfonates, and sulfated alkyl phenol ethoxylates can be used as anionic surfactants. Finally, but not exclusively, nonionic surfactants can also be present (preferably up to 40% by weight), and C 8 to C 20 alkanol ethoxylates with 1 to 10 ethylene oxide groups are particularly mentioned here.

Die so aufgebauten Suspensionen sind als oxidative Entschlichtungsmittel von mit Stärke geschlichtetem Textilgut sehr gut brauchbar. Man setzt sie im allgemeinen den Entschlichtungsflotten in Mengen von 4 bis 20, vorzugsweise 6 bis 13 g/1 Entschlichtungsflotte zu. Die Entschlichtungsflotten enthalten je nach Tensidanteil in den Persulfat-Suspensionen noch zusätzliche Netz- und Waschmittel. Wenn der Tensidanteil in den Suspensionen relativ hoch ist, so kann auf die zusätzlichen Netz- und Waschmittel verzichtet werden.The suspensions built up in this way are very useful as oxidative desizing agents for textile materials sized with starch. They are generally added to the desizing liquors in amounts of 4 to 20, preferably 6 to 13 g / 1 desizing liquor. Depending on the amount of surfactant in the persulfate suspensions, the desizing liquors also contain additional wetting agents and detergents. If the proportion of surfactant in the suspensions is relatively high, the additional wetting agents and detergents can be dispensed with.

In den nun folgenden Beispielen soll die Erfindung erläutert werden.The invention will be explained in the following examples.

BeispieleExamples

Die Mischungen wurden zur Überprüfung ihrer Stabilität bei 50°C bzw. 80°C gelagert. Der jeweilige Persulfatgehalt wurde titrimetrisch bestimmt. Dabei wurde 1 g der Mischung in 50 ml Lösung aus H2O/lsopropanol (40 : 10) gelöst und mit 50 ml KJ-Lösung (Konzentration: 300 g/l) versetzt. Nach fünfzehn Minuten bei Raumtemperatur wurde mit 0,1 N Natriumthiosulfatlösung bis zum Umschlag nach farblos titriert.The mixtures were stored at 50 ° C or 80 ° C to check their stability. The respective persulfate content was determined titrimetrically. 1 g of the mixture was dissolved in 50 ml of H 2 O / isopropanol (40:10) and 50 ml of KJ solution (concentration: 300 g / l) were added. After fifteen minutes at room temperature, titration was carried out with 0.1 N sodium thiosulfate solution until it turned colorless.

Beispiel 1example 1

Figure imgb0001
Der K2S20s-Gehalt wurde bei einer Lagertemperatur von 50° C verfolgt.
Figure imgb0002
Figure imgb0001
 The K 2 S 2 0s content was monitored at a storage temperature of 50 ° C.
Figure imgb0002

Die Probe nach dreiwöchiger Lagerung bei 50° C zeigte bei der Entschlichtung von Bw-Nessel bei einem Zusatz von 10 g/1 in der Entschlichtungsflotte und 15 Minuten Verweilzeit des Gewebes bei 100"C den gleichen Entschlichtungseffekt wie die Ausgangsprobe. In beiden Fällen wurde ein Tegewa-Wert von 8 erzielt.The sample after three weeks of storage at 50 ° C. showed the same desizing effect as the original sample when desizing Bw-nettle with an addition of 10 g / l in the desizing liquor and 15 minutes residence time of the fabric at 100 ° C. In both cases, a Tegewa value of 8 achieved.

Vergleichsbeispiel zu Beispiel 1Comparative example to example 1

Figure imgb0003
Lagerung bei 50° C
Figure imgb0004
Figure imgb0003
 Storage at 50 ° C
Figure imgb0004

Die Vergleichsprobe zeigte nur unmittelbar nach der Herstellung bei einer Einsatzmenge von 10 g/I in der Entschlichtungsflotte bei sonst gleichen Bedingungen wie in Beispiel 1 einen ausreichenden Entschlichtungseffekt (Tegewa-Wert 8). Nach sieben Tagen Lagerung wurde nur noch ein Tegewa-Wert von 4 bei der Entschlichtung erzielt.The comparative sample showed a sufficient desizing effect (Tegewa value 8) only immediately after production at an amount of 10 g / l in the desizing liquor under otherwise the same conditions as in Example 1. After seven days of storage, only a Tegewa value of 4 was achieved during desizing.

Beispiel 2Example 2

Figure imgb0005
Lagerung bei 50° C
Figure imgb0006
Figure imgb0005
 Storage at 50 ° C
Figure imgb0006

Die Mischung wurde zur oxidativen Entschlichtung eingesetzt.The mixture was used for oxidative desizing.

Rahmenrezept:Framework recipe:

  • 50 g/1 NaOH50 g / 1 NaOH
  • 3-5 g/1 Tensid (Typ Nonylphenolpolyethylenglykolether).3-5 g / 1 surfactant (type nonylphenol polyethylene glycol ether).

Bei einem Zusatz von 12,5 g/1 der Mischung in die Entschlichtungsflotte, 100% Flottenaufnahme und einer Verweilzeit von 5 Minuten bei 100 bis 105° C wurde bei einem Bw-Nesselgewebe eine ausreichende Entschlichtung erzielt (Tegewa-Wert 8), auch noch nach dreiwöchiger Lagerung der Mischung bei 50° C.With the addition of 12.5 g / l of the mixture to the desizing liquor, 100% liquor absorption and a dwell time of 5 minutes at 100 to 105 ° C, sufficient desizing was achieved with a Bw nettle fabric (Tegewa value 8), too after storing the mixture for three weeks at 50 ° C.

Vergleichsbeispiel 2Comparative Example 2

Figure imgb0007
Lagerung bei 50° C
Figure imgb0008
Figure imgb0007
 Storage at 50 ° C
Figure imgb0008

Mit den Vergleichsproben war nach 14tägiger Lagerung bei 50°C bei den unter Beispiel 2 angegebenen Mengenzusätzen und Bedingungen in der Entschlichtungsflotte keine Entschlichtung mehr möglich.After the 14-day storage at 50 ° C. with the quantity additions and conditions specified in Example 2 in the desizing liquor, desizing was no longer possible with the comparison samples.

Beispiel 3Example 3

Figure imgb0009
Lagerung bei 80° C
Figure imgb0010
Figure imgb0009
 Storage at 80 ° C
Figure imgb0010

Lagerung bei 50° C

Figure imgb0011
Storage at 50 ° C
Figure imgb0011

Vergleichsbeispiel 3Comparative Example 3

Figure imgb0012
Lagerung bei 80° C
Figure imgb0012
 Storage at 80 ° C

Figure imgb0013
Lagerung bei 50° C
Figure imgb0014
Figure imgb0013
 Storage at 50 ° C
Figure imgb0014

Beispiel 4Example 4

Figure imgb0015
Figure imgb0015

Lagerung bei 50° C

Figure imgb0016
Storage at 50 ° C
Figure imgb0016

Ersetzt man in der Mischung nur die 5 Teile K2SO4 durch 5 Teile Na2SO4, so verringert sich schon die Stabilität.If only the 5 parts of K 2 SO 4 are replaced by 5 parts of Na 2 SO 4 in the mixture, the stability is already reduced.

Vergleichsbeispiel 4Comparative Example 4

Figure imgb0017
Figure imgb0017

Lagerung bei 50°C

Figure imgb0018
Storage at 50 ° C
Figure imgb0018

Die Mischungen aus Beispiel 3 und Beispiel 4 ergaben bei Zusätzen von 6 g/1 in der Entschlichtungsflotte bei Bw-Nessel und Bw-Köpergewebe Tegewa-Werte von 8 bis 9. Dabei wurde mit einer Flottenaufnahme von 100%, einer Flottentemperatur von 100 bis 130°C und einer Verweilzeit von 10 Minuten gearbeitet.The mixtures from Example 3 and Example 4 gave Tegewa values of 8 to 9 when 6 g / l were added to the desizing liquor in the case of Bw nettle and Bw twill fabrics. A liquor absorption of 100% and a liquor temperature of 100 to 130 were obtained ° C and a dwell time of 10 minutes.

Claims (3)

1. An oxidative desizing agent containing potassium peroxydisulfate, a water-soluble polymer or copolymer of acrylic acid and/or maleic acid, with or without an anionic surfactant, where appropriate mixed with a non-ionic surfactant, and water, wherein the agent is an aqueous suspension of potassium peroxydisulfate, the aqueous phase of which contains from 12 to 65% by weight of at least one other dissolved compound which keeps the system at a pH of at least 5 and is a source of potassium ions.
2. An agent as claimed in claim 1 containing, based on the suspension,
Figure imgb0020
3. The use of an agent as claimed in claim 1 or 2 for the oxidative desizing of cellulose-containing textile goods sized with starch.
EP82111950A 1982-01-28 1982-12-23 Aqueous suspensions of peroxydisulfates and their use as oxidative desizing agents in textiles sized with starch Expired EP0086898B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82111950T ATE15916T1 (en) 1982-01-28 1982-12-23 AQUEOUS SUSPENSIONS OF PEROXYDISULPHATES AND THEIR USE AS OXIDATIVE DESIZING AGENTS FOR STARCH SIZED TEXTILE GOODS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823202760 DE3202760A1 (en) 1982-01-28 1982-01-28 AQUEOUS SUSPENSIONS OF PEROXY DISISULFATES AND THEIR USE AS OXIDATIVE DETOXIFICATORS FOR TEXTILE GOODS LAYERED WITH STRENGTH
DE3202760 1982-01-28

Publications (2)

Publication Number Publication Date
EP0086898A1 EP0086898A1 (en) 1983-08-31
EP0086898B1 true EP0086898B1 (en) 1985-10-02

Family

ID=6154148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111950A Expired EP0086898B1 (en) 1982-01-28 1982-12-23 Aqueous suspensions of peroxydisulfates and their use as oxidative desizing agents in textiles sized with starch

Country Status (6)

Country Link
US (1) US4507220A (en)
EP (1) EP0086898B1 (en)
JP (1) JPS58135109A (en)
AT (1) ATE15916T1 (en)
CA (1) CA1209756A (en)
DE (2) DE3202760A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581323B1 (en) * 1985-05-06 1987-05-29 Rhone Poulenc Spec Chim NOVEL SURFACTANT COMPOSITION, PROCESS FOR OBTAINING SAME AND APPLICATIONS THEREOF
DE3903601C1 (en) * 1989-02-08 1990-05-10 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De
US5855805A (en) * 1996-08-08 1999-01-05 Fmc Corporation Microetching and cleaning of printed wiring boards

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1469325A1 (en) * 1964-12-28 1968-11-28 Degussa Process for desizing textiles made of cellulose
DE2814354C2 (en) * 1978-04-03 1981-04-16 Basf Ag, 6700 Ludwigshafen Process for desizing textiles containing or consisting of cellulose
DE2913177A1 (en) * 1979-04-02 1980-10-23 Hoechst Ag OXIDATIVE DETOXIFICATION AGENT AND METHOD FOR OXIDATIVE DECOMPOSITION

Also Published As

Publication number Publication date
CA1209756A (en) 1986-08-19
JPS58135109A (en) 1983-08-11
US4507220A (en) 1985-03-26
DE3202760A1 (en) 1983-08-04
ATE15916T1 (en) 1985-10-15
EP0086898A1 (en) 1983-08-31
JPH0350028B2 (en) 1991-07-31
DE3266715D1 (en) 1985-11-07

Similar Documents

Publication Publication Date Title
DE69404543T2 (en) Stabilized sodium percarbonate particles
DE2609039C3 (en) Process for making persistent sodium percarbonate
DE1467686A1 (en) cleaning supplies
DE1296297B (en) Detergent tablet not coated with silicates
DE2450524A1 (en) Foaming bleach blend
DE2422691A1 (en) STABLE BLEACHING AGENTS
DE1271885B (en) Liquid, storage-stable detergents, bleaching agents and oxidizing agents
DE69403207T2 (en) FLUIDIZED BED COATED AMIDOPEROXY ACID CONTAINING FLEACHING COMPOSITION
EP0086898B1 (en) Aqueous suspensions of peroxydisulfates and their use as oxidative desizing agents in textiles sized with starch
DE2510184A1 (en) Foaming bleach blend
DE1594862A1 (en) Aqueous concentrates containing perborate which can be used as bleaching and oxidizing agents
DE1567583A1 (en) Storage-stable aqueous suspensions containing sodium perborate which can be used as oxidizing and bleaching agents
DE1803099C3 (en)
DE2418469A1 (en) POWDERY BLEACHING MIXTURE
DE2305554A1 (en) COMPONENTS FOR Aqueous DETERGENT CONCENTRATES
DE1293451C2 (en) Process for the production of alkali starch phosphates
EP1232239A1 (en) Method for the production of particulate washing or cleaning agents
DE1594870A1 (en) Compositions based on alkali halites
DE1617072A1 (en) Detergent concentrates
DE243368C (en)
DE2210347A1 (en) Bactericidal substance
DE3227915A1 (en) AQUEOUS CONCENTRATED SOLUTIONS OF MIXTURES FROM ORGANIC COMPLEX IMAGERS AND DISPERSING AGENTS BASED ON POLYMERIC ALIPHATIC CARBONIC ACIDS
DD140140B1 (en) Process for the preparation of a stable sodium bicarbonate perhydrate
DE657116C (en) Antiseptic detergents
DE1024208B (en) Germ-killing preparations

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19821223

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 15916

Country of ref document: AT

Date of ref document: 19851015

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3266715

Country of ref document: DE

Date of ref document: 19851107

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19921113

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19921204

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19921231

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19931224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19931231

BERE Be: lapsed

Owner name: BASF A.G.

Effective date: 19931231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940701

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19941124

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19941125

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19941201

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19941215

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19941227

Year of fee payment: 13

EUG Se: european patent has lapsed

Ref document number: 82111950.0

Effective date: 19940710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19951218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19951223

Ref country code: AT

Effective date: 19951223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19951231

Ref country code: CH

Effective date: 19951231

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19951223

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960830

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST