EP0219048A2 - Use of graft copolymers of polyalkylenoxides and vinyl acetate as anti-redeposition agents in the washing and post-treatment of textiles containing synthetic fibres - Google Patents

Use of graft copolymers of polyalkylenoxides and vinyl acetate as anti-redeposition agents in the washing and post-treatment of textiles containing synthetic fibres Download PDF

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EP0219048A2
EP0219048A2 EP19860113884 EP86113884A EP0219048A2 EP 0219048 A2 EP0219048 A2 EP 0219048A2 EP 19860113884 EP19860113884 EP 19860113884 EP 86113884 A EP86113884 A EP 86113884A EP 0219048 A2 EP0219048 A2 EP 0219048A2
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graft copolymers
use
vinyl acetate
washing
oxide
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German (de)
French (fr)
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EP0219048B1 (en )
EP0219048A3 (en )
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Alexander Dr. Kud
Guenther Dr. Schulz
Wolfgang Dr. Trieselt
Heinrich Dr. Hartmann
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BASF SE
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BASF SE
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    • CCHEMISTRY; METALLURGY
    • C11ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3788Graft polymers
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005Other compounding ingredients characterised by their effect
    • C11D3/0036Soil deposition preventing compositions; Antiredeposition agents

Abstract

Verwendung von Pfropfcopolymerisaten, die erhältlich sind durch Pfropfen von Polyalkylenoxiden eines Molekulargewichts (Zahlenmittel) von 2000 bis 100.000 mit Vinylacetat im Gewichtsverhältnnis 1:0,2 bis 1:10 und deren Acetatgruppen gegebenenfalls bis zu 15 % verseift sind, als Vergrauungsinhibitoren beim Waschen und Nachbehandeln von Synthesefasern enthaltendem Textilgut. Use of graft copolymers obtainable by grafting polyalkylene oxides having a molecular weight (number average) of 2,000 to 100,000 with vinyl acetate in Gewichtsverhältnnis 1: 0.2 to 1:10 and the acetate groups optionally up to 15% are hydrolyzed, as graying inhibitors in the washing and aftertreatment containing textile material of synthetic fibers.

Description

  • Aufgrund gesetzgeberischer Maßnahmen ist es in vielen Ländern erforderlich, den Gehalt an Phosphaten in Waschmitteln stark herabzusetzen bzw. phosphatfreie Waschmittel anzubieten. Due to legislative measures, it is necessary in many countries to reduce the content of phosphates in detergents strong or offer phosphate-free detergents. Reduziert man jedoch den Gehalt an Phosphaten in Waschmitteln, so wird dadurch die Waschwirkung der Produkte verschlechtert. However, it reduces the content of phosphates in detergents, as a result, the washing effect of the products is deteriorated. Phosphate wirken nicht nur als Sequestriermittel für Erdalkalimetall-Ionen, sondern auch als Inkrustierungs- und Vergrauungsinhibitoren. Phosphates act not only as sequestering agents for alkaline earth metal ions, but also as Inkrustierungs- and graying. Während man das Problem der Inkrustierung, dh der Ablagerungen mineralischer Herkunft auf dem Waschgut durch Ersatz der Phosphate in Waschmitteln durch andere Stoffe in den Griff bekommen kann, ist dies bei dem Problem der Vergrauung, dh des Wiederanschmutzens der Wäsche mit Schmutzteilchen und Fetten beim Waschen noch verbesserungsbedürftig. While the problem of encrustation, ie the deposits of mineral origin on the laundry by replacing the phosphates can get in detergents with other substances to grips with this at the problem of graying, ie the Wiederanschmutzens lingerie with dirt and grease in the wash still in need of improvement. Das Problem der Vergrauung tritt vor allem bei Synthesefasern enthaltendem Gewebe auf, insbesondere bei Polyester enthaltenden Textilien. The problem of graying occurs mainly in synthetic fibers containing tissue, particularly in polyester-containing textiles.
  • Aus der EP-PS 87 671 ist die Verwendung von Copolymerisaten, die als Monomereneinheiten From EP-PS 87 671 is the use of copolymers which contain as monomer units
    • a) 50 bis 90 Gew.% mindestens eines Vinylesters von C₁- bis C₄-aliphatischen Carbonsäuren, a) 50 to 90 wt.% of at least one of Vinylesters C₁- to C₄ aliphatic carboxylic acids,
    • b) 5 bis 35 Gew.% mindestens eines N-Vinyllactams, b) 5 to 35 wt.% of at least one N-vinyllactam,
    • c) 1 bis 20 Gew.% mindestens eines basische Gruppen enthaltenden Monomeren oder dessen Salze oder Quaternierungsprodukte und c) 1 to 20 wt.% of at least one basic group-containing monomer or its salts or quaternization and
    • d) 0 bis 20 Gew.% mindestens eines mit den Monomeren a), b) und c) copolymerisierbaren sonstigen von Carboxylgruppen und basischen Gruppen freien Monomeren mit der Maßgabe einpolymerisiert enthalten, daß sich die Prozentzahlen jeweils auf 100 ergänzen, d) from 0 percent to 20th% of at least one with the monomers a), b) and c) copolymerized units of copolymerizable other carboxyl groups and basic groups free monomers, with the proviso that the percentages always add up to 100,
  • als Vergrauungsinhibitoren beim Waschen und Nachbehandeln von synthetische Fasern enthaltendem Textilgut bekannt. known as graying inhibitors in the washing and aftertreatment of textile material containing synthetic fibers.
  • Der vorliegenden Erfindung liegt die Aufgabe zugrunde, Vergrauungsinhibitoren für Waschmittel und Vergrauungsinhibitoren zum Nachbehandeln von Synthesefasern enthaltendem Textilgut zur Verfügung zu stellen. The object of the present invention is based is to make graying inhibitors for detergents and antiredeposition agents for the aftertreatment of textile material containing synthetic fibers are available.
  • Die Aufgabe wird erfindungsgemäß gelöst durch Verwendung von Pfropfcopolymerisaten, die erhältlich sind durch Pfropfen von a) Polyalkylenoxiden eines Molekulargewichts (nach dem Zahlenmittel) von 2000 bis 100.000 auf Basis von Ethylenoxid, Propylenoxid und/oder Butylenoxid mit b) Vinylacetat im Gewichtsverhältnis a):b) von 1:0,2 bis 1:10 und deren Acetatgruppen gegebenenfalls bis zu 15 % verseift sind, als Vergrauungsinhibitoren beim Waschen und Nachbehandeln von Synthesefasern enthaltendem Textilgut. The object is solved by the use of graft copolymers which can be obtained (by grafting a) polyalkylene oxides having a molecular weight by the number average) of 2,000 to 100,000 based on ethylene oxide, propylene oxide and / or butylene oxide with b) vinyl acetate in a weight ratio a): b ) of 1: 0.2 to 1:10 and the acetate groups optionally up to 15% are hydrolyzed, as graying inhibitors in the washing and aftertreatment of textile goods containing synthetic fibers.
  • Die erfindungsgemäß zu verwendenden Produkte sind bekannt (vgl. DE-PS 10 77 430). The inventive products to be used are known (cf., DE-PS 10 77 430). Sie sind erhältlich durch Pfropfen von Polyalkylenoxiden mit Vinylacetat, wobei die Pfropfcopolymerisation radikalisch initiiert wird. They are obtainable by grafting polyalkylene oxide with vinyl acetate, wherein said graft copolymerization is initiated by free radicals. Hierfür kann man sich entweder üblicher Polymerisationsinitiatoren bedienen, die unter den Polymerisationsbedingungen in Radikale zerfallen oder die Polymerisation auch durch energiereiche Bestrahlung initiieren. For this you can use either conventional polymerization initiators which decompose or under the polymerization radicals initiate polymerization by high-energy radiation. Als Polyalkylenoxide kommen Polymerisate auf Basis von Ethylenoxid, Propylenoxid und/oder Butylenoxid in Betracht, die ein Molekulargewicht (Zahlenmittel) von 2000 bis 100.000, vorzugsweise 4000 bis 50.000 haben. Polyalkylene oxides as polymers based on ethylene oxide, propylene oxide and / or butylene oxide having a molecular weight (number average) of 2,000 to 100,000, preferably of 4000-50000. Die Alkylenoxid-Einheiten können im Polymerisat statistisch verteilt sein oder in Form von Blöcken vorliegen, zB Blockcopolymerisate aus Ethylenoxid und Propylenoxid, Blockcopolymerisate aus Ethylenoxid und Butylenoxid sowie Blockcopolymerisate aus Ethylenoxid, Propylenoxid und Butylenoxid. The alkylene oxide units can be randomly distributed or in the form of blocks in the polymer, for example, block copolymers of ethylene oxide and propylene oxide, block copolymers of ethylene oxide and butylene oxide as well as block copolymers of ethylene oxide, propylene oxide and butylene oxide.
  • Zur Herstellung der Pfropfcopolymerisate werden die in Betracht kommenden Polyalkylenoxide entweder in Vinylacetat gelöst und nach Zugabe eines Polymerisationsinitiators kontinuierlich oder diskontinuierlich polymerisiert. For the preparation of the graft copolymers the suitable polyalkylene oxides are either dissolved in vinyl acetate, and polymerized continuously or discontinuously by adding a polymerization initiator. Ebenso ist eine halbkontinuierliche Arbeitsweise möglich, bei der man einen Teil, zB 10 % des zu polymerisierenden Gemisches aus Polyalkylenoxid, Vinylacetat und Initiator vorlegt, auf Polymerisationstemperatur erhitzt und nach dem Anspringen der Polymerisation den Rest der zu polymerisierenden Mischung nach Fortschritt der Polymerisation zugibt. Likewise, a semi-continuous operation is possible in which it is heated a part of, for example, presents 10% of the mixture to be polymerized of polyalkylene oxide, vinyl acetate and initiator to the polymerization temperature and after the polymerization has started, adding the remainder of the mixture to be polymerized according to progress of the polymerization. Die Pfropfcopolymerisate können auch dadurch erhalten werden, daß man Polyalkylenoxid vorlegt, auf die Polymerisationstemperatur erwärmt und Vinylacetat und Starter entweder auf einmal, absatzweise oder vorzugsweise kontinuierlich zufügt. The graft copolymers can also be obtained by initially introducing polyalkylene oxide, heated to the polymerization temperature and adding vinyl acetate and either Starter preferably continuously at once, batchwise or.
  • Als Polymerisationsinitiatoren eignen sich vor allem organische Peroxide, wie Diacetylperoxid, Dibenzoylperoxid, Succinylperoxid, Di-tert.-butylperoxid, tert.-Butylperbenzoat, tert.-Butyl-perpivalat, tert.-Butyl-permaleinat, Cumolhydroperoxid, Diisopropyl-peroxidicarbonat, Bis-(o-toluoyl)-peroxid, Didecanoylperoxid, Dioctanoylperoxid, Dilauroylperoxid, t-Butylperisobutyrat, t-Butylperacetat, Di-t-amylperoxid, t-Butylhydroperoxid sowie Mischungen von Initiatoren. Suitable polymerization in particular, organic peroxides such as diacetyl peroxide, dibenzoyl peroxide, succinyl peroxide, di-tert-butyl peroxide, tert-butyl perbenzoate are, tert-butyl perpivalate, tert-butyl-permaleinat, cumene hydroperoxide, diisopropyl peroxydicarbonate, bis (o-toluoyl) peroxide, didecanoyl peroxide, dioctanoyl peroxide, dilauroyl peroxide, t-butyl perisobutyrate, t-butyl peracetate, di-t-amyl peroxide, t-butyl hydroperoxide, as well as mixtures of initiators. Die Polymerisation kann in dem Temperaturbereich von 50 bis 200°C erfolgen. The polymerization can be carried out in the temperature range of 50 to 200 ° C. Vorzugsweise wird die Pfropfcopolymerisation bei 70 bis 140°C vorgenommen. Preferably, the graft copolymerization is carried out at 70 to 140 ° C. Sie kann auch unter Druck stattfinden. You can also take place under pressure. Die Pfropfcopolymerisation kann nach Art einer Lösungspolymerisation in einem Lösemittel vorgenommen werden. The graft may be made by a solution in a solvent. Geeignete Lösemittel sind beispielsweise Alkohole, wie Methanol, Ethanol, n-Propanol, Isopropanol, n-Butanol, sec.-Butanol, tert.-Butanol, n-Hexanol und Cyclohexanol sowie Glykole, wie Propylenglykol, Ethylenglykol und Butylenglykol sowie die Methyl- oder Ethylether der zweiwertigen Alkohole sowie Dioxan. Suitable solvents are for example alcohols such as methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, n-hexanol and cyclohexanol, and glycols such as propylene glycol, ethylene glycol and butylene glycol, and the methyl or ethyl ethers of dihydric alcohols and dioxane. Die Pfropfcopolymerisation wird vorzugsweise in Gegenwart von Wasser als Lösemittel durchgeführt. The graft copolymerization is preferably carried out as a solvent in the presence of water. Bei Verwendung von Wasser als Lösemittel liegt zunächst eine Lösung vor, die in Abhängigkeit von der Menge des zugegebenen Vinylacetats in eine Dispersion übergeht. When using water as solvent is initially present a solution that passes depending on the amount of the added vinyl acetate in a dispersion. Bei dieser Herstellmethode können gegebenenfalls auch Emulgatoren verwendet werden. In this preparation method also emulsifiers can be used if necessary.
  • Pro 100 Gew.-Teile des Pfropfcopolymerisats bzw. Polyalkylenoxid und Vinylacetat, verwendet man 5 bis 100, vorzugsweise 10 bis 50 Gew.-Teile eines Lösemittels oder auch eines Lösemittelgemisches, zB eine Mischung aus Isopropanol und Wasser bzw. einer Mischung aus Ethylenglykol und Ethanol. Per 100 parts by weight of the graft copolymer or polyalkylene oxide and vinyl acetate, 5 to 100, preferably 10 to 50 parts by weight of a solvent or a solvent mixture, for example a mixture of isopropanol and water, or a mixture of ethylene glycol and ethanol ,
  • Das Gewichtsverhältnis von Polyalkylenoxid zu Vinylacetat im Pfropfcopolymerisat beträgt 1:0,2 bis 1:10, vorzugsweise 1:0,5 bis 1:6. The weight ratio of polyalkylene oxide to vinyl acetate in the graft copolymer is 1: 0.2 to 1:10, preferably 1: 0.5 to 1: 6. Als Pfropfgrundlage wird vorzugsweise Polyethylenoxid eines Molekulargewichts (nach dem Zahlenmittel) von 2000 bis 100.000, insbesondere 4000 bis 50.000 verwendet. Polyethylene oxide as a graft base is preferably used having a molecular weight (number-average) of 2,000 to 100,000, especially 4000 to 50,000. Bis zu 15 % der Acetatgruppen des Pfropfcopolymerisats können gegebenenfalls verseift sein. Up to 15% of the acetate of the graft copolymer can be hydrolyzed if necessary. Die Verseifung der Pfropfcopolymerisate, die dann zu Vinylalkohol-Einheiten enthaltenden Pfropfcopolymerisaten führt, wird durch Zugabe einer Base, wie NaOH oder KOH, bzw. durch Zugabe von Säuren, und gegebenenfalls Erwärmen der Mischung vorgenommen. The saponification of the graft copolymers, which leads then to vinyl alcohol units-containing graft copolymers is carried out by adding a base such as NaOH or KOH, or by addition of acids, and optionally heating the mixture. Die erfindungsgemäß als Vergrauungsinhibitoren einzusetzenden Pfropfcopolymerisate haben einen K-Wert nach H. Fikentscher von 10 bis 200, vorzugsweise 20 bis 100 (bestimmt in 1 gew%iger Lösung in Essigsäureethylester bei 25°C). According to the invention to be used as redeposition inhibitors graft copolymers have a K value according to H. Fikentscher of 10 to 200, preferably 20 to 100 (determined in 1% strength by weight solution in ethyl acetate at 25 ° C).
  • Die oben beschriebenen Pfropfcopolymerisate werden in Waschmitteln mit reduziertem Phosphatgehalt (darunter soll ein Phosphatgehalt von weniger als 25 Gew.% Natriumtriphosphat verstanden werden) oder in phosphatfreien Waschmitteln verwendet. The graft copolymers described above are in detergents having reduced phosphate content (including to a phosphate content by weight of less than 25.% Sodium triphosphate be understood) or used in phosphate-free detergents. Die erfindungsgemäß zu verwendenden Pfropfcopolymerisate werden handelsüblichen Waschmittelmischungen in einer Menge von 0,1 bis 3, vorzugsweise 0,3 bis 2 Gew.%, bezogen auf die Waschmittelmischung zugesetzt. According to the invention to be used are graft copolymers wt commercial detergent mixtures in an amount of 0.1 to 3, preferably 0.3 to 2.%, Based on the detergent added to the mixture. Die Pfropfcopolymerisate können dabei in Form einer Paste, einer hochviskosen Masse oder als Lösung in einem Lösemittel der Waschmittelformulierung zugesetzt werden. The graft copolymers can in this case be added in the form of a paste, a highly viscous mass or as a solution in a solvent of the detergent formulation. Die Produkte können auch an der Oberfläche von Stellmitteln, wie zB Na₂SO₄ oder Gerüststoffen (Zeolithe) sowie festen Hilfsstoffen der Waschmittelformulierung adsor biert werden. The products can be biert Adsor also on the surface of diluents, such as Na₂SO₄ or builders (zeolites) and solid constituents of the detergent formulation. Weiterhin ist es möglich, die Produkte in feinverteilter Form der Waschmittelformulierung hinzuzusetzen. Furthermore, it is possible to add release the products in finely divided form of the detergent formulation.
  • Die handelsüblichen Waschmittel enthalten außer Phosphaten (als Gerüststoff) Tenside, zB C₈- bis C₁₂-Alkylphenolethoxylate, C₁₂- bis C₂₀-Alkanolethoxylate, Blockcopolymerisate des Ethylenoxids und Propylenoxids, die gegebenenfalls Endgruppen verschlossen sind, anionische Tenside, wie C₈- bis C₁₂-Alkylbenzolsulfonate, C₁₂- bis C₁₆-Alkansulfonate, C₁₂- bis C₁₆-Alkylsulfate, C₁₂- bis C₁₆Alkylsulfosuccinate, sulfatierte ethoxylierte C₁₂/C₁₆-Alkanole, sowie gegebenenfalls noch 0,5 bis 3 Gew.% eines Inkrustierungsinhibitors, wie Polymaleinsäure, Maleinsäure-Acrylsäure-Copolymerisate, Polyacrylsäure bzw. deren Salze, außerdem Phosphatersatzstoffe, wie Zeolithe in einer Menge von 5 bis 30 Gew.%, 3 bis 25 Gew.% eines Bleichmittels, wie Natriumperborat, gegebenenfalls Bleichaktivatoren, 10 bis 30 Gew.% Stellmittel, wie Natriumsulfat, Seife, Alkalien, wie Soda, Weichmacher und Entschäumer, Parfüm, optische Aufheller und gegebenenfalls The commercial detergent containing except phosphates (as a builder) surfactants, for example C₈- to C₁₂ alkylphenol ethoxylates, C₁₂- C₂₀-alkanol ethoxylates, block copolymers of ethylene oxide and propylene oxide, the terminal groups are optionally closed, anionic surfactants such as C₈- to C₁₂ alkylbenzenesulfonates, C₁₂- to C₁₆ alkane sulfonates, C₁₂- to C₁₆ alkyl sulfates, C₁₂- to C₁₆Alkylsulfosuccinate, sulfated ethoxylated C₁₂ / C₁₆-alkanols, and optionally 0.5 to 3 wt yet.% of a Inkrustierungsinhibitors such as polymaleic acid, maleic acid-acrylic acid copolymers, polyacrylic acid or salts thereof, as well as phosphate substitutes, such as zeolites present in an amount of 5 to 30%, 3 to 25 wt.% of a bleaching agent, such as sodium perborate, optionally bleach activators, 10 to 30 wt.% adjusting agents, such as sodium sulfate, soap, alkalis, such as sodium carbonate, plasticizers, and antifoaming agents, perfume, optical brightener and, if Enzyme. Enzymes.
  • Die Pfropfcopolymerisate eignen sich außerdem als Zusatz beim Nachbehandeln von synthetische Fasern enthaltendem Textilgut. The graft copolymers are also suitable as an additive in the aftertreatment of textile material containing synthetic fibers. Sie werden zu diesem Zweck dem letzten Spülbad eines Waschmaschinenzyklus zugesetzt, wobei der Zusatz entweder zusammen mit einem an dieser Stelle üblicherweise angewendetem Wäscheweichspülers erfolgen kann, oder - falls ein Weichspüler nicht erwünscht ist - allein anstelle des Weichspülers eingesetzt. They are added for this purpose to the final rinse cycle of a washing machine, wherein the addition can take place either together with a conventionally-applied fabric conditioner at this point, or - if a softener is not desirable - used alone in place of the fabric softener. Die Einsatzmengen betragen 0,01 bis 0,3 g/l Waschflotte. The amounts used are from 0.01 to 0.3 g / l wash liquor. Die Verwendung der Pfropfcopolymerisate im letzten Spülbad eines Waschmaschinenzyklus hat den Vorteil, daß die Wäsche beim nächsten Waschzyklus weit weniger angeschmutzt wird als ohne den Zusatz des Vergrauungsinhibitors. The use of the graft copolymers in the final rinse cycle of a washing machine has the advantage that the laundry is far less soiled the next wash cycle and without the addition of antiredeposition the advantage.
  • Die in den Beispielen angegebenen Teile sind Gewichtsteile, die Angaben in Prozent beziehen sich auf das Gewicht der Stoffe. The parts specified in the examples are parts by weight and percentages relate to the weight of the fabrics. Die K-Werte der Pfropfcopolymerisate wurden nach H. Fikentscher, Cellulose Chemie 13 , 58-64 und 71-74 (1932) in 1 %iger Lösung in Essigsäureethylester bei einer Temperatur von 25°C gemessen; The K values of the graft copolymers were 13, 58-64 and 71-74 (1932) measured according to H. Fikentscher, Cellulose Chemie in 1% strength solution in ethyl acetate at a temperature of 25 ° C; dabei bedeutet K = k·10³. here means K = k × 10. Die Molekulargewichte (Zahlenmittel) der eingesetzten Polyetherdiole wurden aus der OH-Zahl errechnet. The molecular weights (number average) of polyetherdiols used were calculated from the OH number.
  • Folgende Produkte wurden verwendet: The following products were used:
  • Pfropfcopolymerisate 1 bis 13 Graft copolymers 1 to 13
  • Die Pfropfcopolymerisate wurden nach der DE-PS 10 77 430 durch Aufpfropfen der in Tabelle 1 angegebenen Teile Vinylacetat auf jeweils 100 Teile eines Polyethylenoxids mit dem ebenfalls in der Tabelle angegebenen Molekulargewicht (Zahlenmittel) hergestellt. The graft copolymers were prepared by grafting 10 77 430 set forth in Table 1 parts of vinyl acetate for each 100 parts of a polyethylene oxide with the likewise specified in Table molecular weight (number average) prepared according to DE-PS. Die K-Werte der Pfropfcopolymerisate sind ebenfalls in der Tabelle 1 angegeben. The K values ​​of the graft copolymers are also shown in Table 1.
    Figure imgb0001
  • Pfropfcopolymerisat 14 graft 14
  • Dieses Pfropfcopolymerisat wurde durch vollständige Verseifung des Pfropfcopolymerisates 4 mit NaOH hergestellt. This graft copolymer was prepared by complete saponification of the graft copolymer 4 with NaOH.
  • Die vergrauungsinhibierende Wirkung der oben angegebenen Pfropfcopolymerisate wurde folgendermaßen geprüft: The graying effect of the above graft copolymers was tested as follows:
  • Polyesterprüfgewebe und Polyester/Baumwoll-Mischgewebe wurden zusammen mit einem Standard-Schmutzgewebe einer Reihe von 3 Wäschen unterzogen. Polyesterprüfgewebe and polyester / cotton blend fabrics were subjected together with a standard soil cloth of a series of 3 washes. Das Schmutzgewebe wird nach jeder Wäsche erneuert, wobei das Testgewebe nach jeder Wäsche stärker anschmutzt. The soiled fabric will be renewed after each wash, the test fabrics stronger anschmutzt after each wash. Der Weißgrad des Testgewebes nach der dritten Wäsche dient zur Beurteilung des Anschmutzungsgrades, die Werte werden durch mehrfache Wiederholung und Mittelwertsbildung gesichert. The whiteness of the test fabric after the third wash is used to assess the degree of soiling, the values ​​are secured by multiple repetition and averaging. Es wurde in % Remission mit einem Elrepho (Zeiss) Filter 8 gemessen. It was in% reflectance with an Elrepho (Zeiss) filter 8 measured.
    Prüfbedingungen: test conditions:
    Prüfgerät: Launder-O-meter Tester: Launder-O-meter
    Wasserhärte: 3,5 µmol Ca/l, Ca: Mg = 3:2 Water hardness: 3.5 .mu.mol Ca / l, Ca: Mg = 3: 2
    Flottenmenge: 250 ml Amount of liquor: 250 ml
    Flottenverhältnis: 1:10 Liquor ratio: 1:10
    Versuchstemperatur: 35 bis 60°C Test temperature: 35 to 60 ° C
    Versuchsdauer: 30 Minuten (mit Aufheizzeit) Duration of test: 30 minutes (with warm-up)
    Waschmittelkonzentration: 8 g/l Detergent concentration: 8 g / l
  • In den Beispielen wurde der Vergrauungsinhibitor in einer Menge von 0,5 %, bezogen auf das Testwaschmittel zugesetzt. In the examples, the anti-redeposition agent in an amount of 0.5%, based on the test detergent was added. Die Prüfgefäße enthielten jeweils 15 g Testgewebe (5 g Polyester-, 5 g Polyester-Baumwollmisch-und 5 g Baumwollgewebe) und 10 g Schmutzgewebe. The test vessels each containing 15 g of test fabric (5 g polyester, 5 g of polyester-cotton blend and 5 g of cotton fabric) and 10 g of soil cloth. Als Schmutzgewebe diente Baumwollschmutzgewebe der Wäschereiforschungsanstalt Krefeld, und zwar WFK 10D. As a soil cloth cotton soil cloth was used to Waschereiforschungsanstalt Krefeld, specifically WFK 10D.
  • Das verwendete Waschmittel hatte folgende Zusammensetzung: The detergent used had the following composition:
    Figure imgb0002
  • Es handelt sich also um ein phosphatreduziertes Waschmittel, wie es nach Inkrafttreten der 2. Stufe der Phosphathöchstmengenverordnung zum deutschen Waschmittelgesetz seit Januar 1984 im Handel anzutreffen ist. It is a phosphate-reduced detergent, such as is found after entry into force of the 2nd stage of the phosphate Höchstmengenverordnung the German detergent law since January 1984 in the trade.
  • Tabelle 2 zeigt die Erhöhung der Remission von Polyester- und Polyester/Baumwollmischgewebe nach Zusatz von 0,5 % der erfindungsgemäßen Produkte, bezogen auf das Gewicht des eingesetzten Waschmittels, im Vergleich zu dem Waschversuch ohne Zusatz und zu einem Zusatz eines Vergrauungsinhibitors gemäß EP-PS 87 671. Table 2 shows the increase of remission of polyester and polyester / cotton blend after addition of 0.5% of the products of the invention, based on the weight of the detergent used, as compared to the washing experiment with no additive, and to an addition of an antiredeposition agent according to EP-PS 87,671.
    Figure imgb0003
  • Die Tabelle zeigt, daß einerseits ein Absinken der Wirkung eintritt, wenn das als Ausgangsmaterial für die Pfropfcopolymeren gewählte Polyethylenglykol unter ein Molekulargewicht von ca. 2000 absinkt, zum anderen ein Maximum in der Wirkung bei einem Polyethylenglykol/Vinylacetat-Verhältnis von etwa 1:2 bis 1:2,5. The table shows that on the one hand a lowering of the effect occurs, if the selected as the starting material for the graft copolymer of polyethylene glycol falls below a molecular weight of about 2000, on the other hand a maximum in the effect in a polyethylene glycol / vinyl acetate ratio of about 1: 2 to 1: 2.5. Gleichzeitig ist ersichtlich, daß die in der EP-PS 087 671 beschriebenen Copolymeren des Vinylacetats von den erfindungsgemäßen Produkten deutlich übertroffen sind. At the same time it is evident that the products described in European Patent No. 087,671 copolymers of vinyl acetate are well exceeded the inventive products. Außerdem zeigt die Tabelle, daß in Wasser dispergiertes Polyvinylacetat allein sowie Polyethylenglykol allein praktisch keine vergrauungsinhibierende Wirkung besitzt, ebenso wie ein Pfropfcopolymerisat, deren Acetatgruppen vollständig verseift worden sind. In addition, the table shows that water-dispersed polyvinyl acetate alone as well as polyethylene glycol alone has virtually no graying-inhibiting effect, as well as a graft copolymer whose acetate groups have been completely saponified.

Claims (5)

  1. 1. Verwendung von Pfropfcopolymerisaten, die erhältlich sind durch Pfropfen von (a) Polyalkylenoxiden eines Molekulargewichts (nach dem Zahlenmittel) von 2000 bis 100.000 auf Basis von Ethylenoxid, Propylenoxid und/oder Butylenoxid mit (b) Vinylacetat im Gewichtsverhältnis (a):(b) von 1:0,2 bis 1:10 und deren Acetatgruppen gegebenenfalls bis zu 15 % verseift sind, als Vergrauungsinhibitoren beim Waschen und Nachbehandeln von Synthesefasern enthaltendem Textilgut. 1. The use of graft copolymers obtainable by grafting (a) a polyalkylene oxide of molecular weight (number-average) of 2,000 to 100,000 based on ethylene oxide, propylene oxide and / or butylene oxide with (b) vinyl acetate in a weight ratio (a) :( b ) of 1: 0.2 to 1:10 and the acetate groups optionally up to 15% are hydrolyzed, as graying inhibitors in the washing and aftertreatment of textile goods containing synthetic fibers.
  2. 2. Verwendung von Pfropfcopolymerisaten gemäß Anspruch 1, dadurch gekennzeichnet , daß sie erhältlich sind durch Pfropfen von (a) Polyalkylenoxiden eines Molekulargewichts (nach dem Zahlenmittel) von 4000 bis 50.000 mit (b) Vinylacetat im Gewichtsverhltnis 1:0,5 bis 1:6. 2. The use of graft copolymers according to claim 1, characterized in that they are obtainable by grafting (a) a polyalkylene oxide of molecular weight (number-average) from 4000 to 50,000 with (b) vinyl acetate in Gewichtsverhltnis 1: 0.5 to 1: 6 ,
  3. 3. Verwendung von Pfropfcopolymerisaten gemäß den Ansprüchen 1 und 2, dadurch gekennzeichnet , daß sie einen K-Wert nach H. Fikentscher von 10 bis 200 haben (bestimmt in 1 gew.%iger Lösung in Essigsäureethylester bei 25°C). 3. The use of graft copolymers according to claims 1 and 2, characterized in that they have a K value according to H. Fikentscher of 10 to 200 (determined in 1 wt.% Solution in ethyl acetate at 25 ° C).
  4. 4. Verwendung von Pfropfcopolymerisaten gemäß Anspruch 1, dadurch gekennzeichnet , daß sie erhältlich sind durch Pfropfen von (a) Polyethylenoxid eines Molekulargewichts (nach dem Zahlenmittel) von 2000 bis 50.000 mit (b) Vinylacetat im Gewichtsverhältnis 1:0,5 bis 1:6 und einem K-Wert von 10 bis 200 haben (bestimmt in 1 %iger Lösung in Essigsäureethylester bei 25°C). 4. The use of graft copolymers according to claim 1, characterized in that they are obtainable by grafting (a) polyethylene oxide of molecular weight (number-average) from 2000 to 50,000 with (b) vinyl acetate in a weight ratio of 1: 0.5 to 1: 6 and a K value of 10 to 200 have (determined in 1% strength solution in ethyl acetate at 25 ° C).
  5. 5. Waschmittel auf der Basis von Tensiden, Gerüststoffen, Bleichmitteln und üblichen Zusätzen, dadurch gekennzeichnet , daß sie als vergrauungsinhibierenden Zusatz 0,1 bis 3 Gew.% von Pfropfcopolymerisaten enthalten, die erhältlich sind durch Pfropfen von (a) Polyalkylenoxiden eines Molekulargewichts (nach dem Zahlenmittel) von 2000 bis 100.000 auf Basis von Ethylenoxid, Propylenoxid und/oder Butylenoxid mit (b) Vinylacetat im Gewichtsverhältnis (a):(b) von 1:0,2 bis 1:10 und deren Acetatgruppen gegebenenfalls bis zu 15 % verseift sind. Contain 5. detergent based on surfactants, builders, bleaches and conventional additives, characterized in that it contains as graying-inhibiting additive from 0.1 to 3.% Of graft copolymers, which are available (by grafting (a) a polyalkylene oxide of molecular weight by the number average) of 2,000 to 100,000 based on ethylene oxide, propylene oxide and / or butylene oxide (with (b) vinyl acetate in a weight ratio a) :( b) of 1: 0.2 to 1:10 and the acetate groups optionally saponified up to 15% are.
EP19860113884 1985-10-12 1986-10-07 Use of graft copolymers of polyalkylenoxides and vinyl acetate as anti-redeposition agents in the washing and post-treatment of textiles containing synthetic fibres Expired - Lifetime EP0219048B1 (en)

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