EP0011715B1 - Liquid, cold-stable two-component washing agent and washing process - Google Patents

Liquid, cold-stable two-component washing agent and washing process Download PDF

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Publication number
EP0011715B1
EP0011715B1 EP79104169A EP79104169A EP0011715B1 EP 0011715 B1 EP0011715 B1 EP 0011715B1 EP 79104169 A EP79104169 A EP 79104169A EP 79104169 A EP79104169 A EP 79104169A EP 0011715 B1 EP0011715 B1 EP 0011715B1
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EP
European Patent Office
Prior art keywords
weight
component
detergent
washing
carbon atoms
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EP79104169A
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German (de)
French (fr)
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EP0011715A1 (en
Inventor
Wolfgang Bechstedt
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Henkel AG and Co KGaA
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Henkel AG and Co KGaA
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Priority to AT79104169T priority Critical patent/ATE471T1/en
Publication of EP0011715A1 publication Critical patent/EP0011715A1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/08—Liquid soap, e.g. for dispensers; capsuled
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2003—Alcohols; Phenols
    • C11D3/2006—Monohydric alcohols
    • C11D3/201—Monohydric alcohols linear
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/32—Amides; Substituted amides
    • C11D3/323—Amides; Substituted amides urea or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/3418—Toluene -, xylene -, cumene -, benzene - or naphthalene sulfonates or sulfates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/40—Dyes ; Pigments
    • C11D3/42—Brightening agents ; Blueing agents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • Two-component detergents are understood to mean preparations consisting of two separately produced and stored detergent constituents which are only combined with one another immediately before or at the start of the washing process.
  • the present invention relates to such an agent in which the liquid concentrate contains one component as a fatty acid and further surfactants and the other component contains the alkali required for soap formation.
  • GB-A 338 121 discloses a washing process using a two-component detergent.
  • the first component consists of soap-forming fatty acids, such as palmitic acid, stearic acid or oleic acid, which can be present in a mixture with emulsifiers or solvents, such as sulfated olive oil, hydrocarbons, tertpentine and chlorinated hydrocarbons.
  • the second component contains the alkalis required for soap formation, such as alkali metal hydroxides, carbonates, bicarbonates and silicates, and is only combined with the first component in the wash liquor. Bleaching components can also be added. This process has a number of disadvantages, which play a role in particular in commercial laundries with a high degree of automation.
  • the fatty acids mentioned are difficult to convey and dose automatically, while the use of solvents from the series of hydrocarbons or chlorinated hydrocarbons poses considerable problems, such as increased risk of fire and explosion or toxicological concerns.
  • the reaction between the fatty acids which are not sufficiently finely dispersed in the washing liquid and the alkali is relatively slow, especially at washing temperatures below 65 ° C. the reaction is also inhibited or partially prevented by the laundry present, so that fatty acid deposits can form on the laundry.
  • FR-A 1 460 904 starts from aqueous fatty acid emulsions suitable for soap formation, which are combined with the washing alkalis in the wash liquor.
  • the fatty acid which is preferably technical oleic acid or a low-melting fatty acid mixture (titer 45 ° C.)
  • a nonionic emulsifier such as polyoxyethylene sorbitan monolaurate or monostearate, optionally with the addition of distilled tall oil .
  • Substances with an alkaline reaction must not be added, as these will break the emulsions.
  • the cleaning power of the detergents is comparatively low, since the emulsifiers used do not make any notable contribution to the detergency. Furthermore, the stability, in particular the low-temperature stability, of the emulsions is poor, since segregation occurs below the freezing point, which cannot be easily reversed after heating.
  • liquid agents of the aforementioned type in particular in the form of highly concentrated preparations.
  • Highly concentrated agents make it possible to keep packaging, transport and storage costs low.
  • they also have the advantage of being easy to convey and dose. This not only offers decisive advantages for commercial laundries that are equipped with appropriate batch and storage tanks, but also for the z.
  • Household washing machines currently in development, equipped with storage and dosing devices. With these new devices, the detergent dosage is specifically matched to the respective washing program, which prevents undesirable or wastewater-incorrect dosing.
  • the potassium soap mentioned under (b) is derived from the fatty acids of the aforementioned composition and is preferably present in proportions of 12 to 15% by weight.
  • the ethoxylated alcohols listed under (c) are derived from native or synthetic alcohols, in particular oxo alcohols having 8 to 14, preferably 9 to 12, carbon atoms.
  • the oxo alcohols can be linearly branched or methyl-branched in the 2-position. Mixtures of native alcohols and alcohols obtained by oxo reaction are also suitable.
  • the number of ethylene glycol ether groups is on average 5 to 10, preferably 6 to 8.
  • the proportion of ethoxylated alcohols in the dispersions should be 15 to 25, preferably 18 to 22% by weight.
  • the component (d) consists of linear sodium alkylbenzenesulfonate, in particular dodecylbenzenesulfonate, in proportions of 4 to 10, preferably 6 to 8,% by weight.
  • Optical brighteners of the formula I are preferably used, in which R 1 and R 2 represent morpholino, diethanolamino or anilino residues.
  • the optical brighteners are present in proportions of 0.05 to 1, preferably 0.1 to 0.7% by weight.
  • hydrotropic compounds listed under (f) can be present in the form of the Na or K salts from urea and / or from low molecular weight alkyl or dialkylbenzenesulfonates, such as toluene, ethylbenzene, cumene or xylene sulfonate. Their proportion is preferably 1.5 to 3% by weight.
  • the component (g) consists of aliphatic C 1 -C 3 alcohols, for example ethanol, propanol and in particular isopropanol, and of the mixtures of the alcohols mentioned.
  • the content of these alcohols in the compositions is preferably up to 8% by weight.
  • Agents with fractions of less than 4% of the alcohols mentioned can also contain hydrotropic ether alcohols which are derived from C 1 -C 4 -monoalcohols and ethylene glycol or propylene glycol or diglycols.
  • hydrotropic ether alcohols which are derived from C 1 -C 4 -monoalcohols and ethylene glycol or propylene glycol or diglycols.
  • the monomethyl, monoethyl, monopropyl, monoisopropyl or monobutyl ethers of ethylene glycol are suitable.
  • the water content of the detergent concentrate is 15 to 30%, preferably up to 22% by weight.
  • the concentrates are within a temperature range between + 50 ° C and -10 ° C unlimited storage stability. Although they become pasty after storage for several weeks at a temperature of -10 ° C, they do not tend to segregate even under such extreme conditions, but instead form well-edible, largely clear liquids after reheating.
  • additives may also include biocides, fragrances, dyes, stabilizers, sequestering agents, neutral salts and optical brighteners of other constitution, but the total amount of such additives should not exceed 10% by weight and preferably less than 5% by weight, in particular less than 2 wt .-%, so that a negative influence on the cold stability is avoided.
  • component B which is combined with the dispersion described above to form fatty acid soaps before or at the start of the washing process, consists of an aqueous solution of alkalis, for example the hydroxides, carbonates, silicates, phosphates and polyphosphates of sodium or Potassium or mixtures of the alkaline compounds mentioned.
  • alkalis for example the hydroxides, carbonates, silicates, phosphates and polyphosphates of sodium or Potassium or mixtures of the alkaline compounds mentioned.
  • Their alkalinity and their amount is to be dimensioned such that the fatty acids are completely converted into the soaps and there is also an excess of alkali, so that the pH of the wash liquor is 9.5 to 14, preferably at least 10 and in particular 10.2 Is -13.5.
  • other sequestering compounds may be present, e.g.
  • Na or K salts of polycarboxylic acids, hydroxy or ether polycarboxylic acids, aminopolycarboxylic acids, hydroxyalkanephosphonic acids and aminopolyphosphonic acids examples of particularly common compounds are nitrilotriacetic acid, ethylenediaminotetraacetic acid, diethylenetriamineopentaacetic acid, 1-hydroxyethane-1,1-diphosphonic acid and 1-aminoethane-1,1-diphosphonic acid.
  • the mixing ratio of component A with liquid component B according to the above composition is 1: 1 to 1: 4, preferably 1: 2 to 1: 3, the total amount of all detergent components and washing alkalis in the washing liquor being 5 g to 30 g, preferably 10 is up to 25 g per kg of dry laundry.
  • the invention further relates to a washing process using the two components A and B in accordance with the aforementioned compositions, mixing ratios and use concentrations.
  • further components can be added, for example sodium aluminum silicates capable of cation exchange in accordance with DE-AS 2412 837, graying inhibitors, such as cellulose ethers and cellulose mixed ethers, enzymes and bleaching agents containing active oxygen or active chlorine, optionally with the addition of bleach activators.
  • graying inhibitors such as cellulose ethers and cellulose mixed ethers
  • enzymes and bleaching agents containing active oxygen or active chlorine optionally with the addition of bleach activators.
  • the stability of the compounds in question they are also preferably in the form of solutions or dispersions, it being possible, if necessary, to counteract a lack of stability by encapsulating the active compounds.
  • the fatty acids (a) used in the recipes and the fatty acids contained in the potassium soaps (b) had the following composition (in% by weight):
  • Component c An oxo alcohol of chain length C S -C 11 with 7 ethylene glycol ether groups was used as the ethoxylated alcohol (component c).
  • Component d consisted of linear Na dodecylbenzenesulfonate.
  • the sodium salt of the compound of the formula I in which R I and R 2 were morpholino radicals was used as the optical brightener (component e).
  • Urea or K-toluenesulfonate was used as the hydrotrope (component f).
  • Component g consisted of isopropanol.
  • the component “salts” means small amounts of Na 2 S0 4 and NaCl, which were present as accompanying substances of the alkylbenzenesulfonate and the optical brightener.
  • the composition is shown in Table 2.
  • the fatty acid was first mixed with the amount of potassium hydroxide solution required for soap formation as well as the ethoxylate and the alkylbenzenesulfonate, which was in the form of a 50% aqueous solution, then the optical brightener dissolved in isopropanol was stirred in, and finally the hydrotrope and water up to specified amount added.
  • the concentrates were in the form of yellowish, clear to slightly iridescent solutions which were thin at room temperature and remained clear and homogeneous when stored for three weeks in a climatic cabinet at -10 ° C and + 50 ° C. A multiple temperature change between + 50 ° C and -10 ° C also did not lead to segregation.
  • the concentrates were miscible with water in all proportions.
  • alkaline component B (amounts given in% by weight):

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  • Engineering & Computer Science (AREA)
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  • Wood Science & Technology (AREA)
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Abstract

A fluid, two-component washing agent consisting of two-components, A and B, of which component A is an aqueous dispersion of fatty acids and component B is an alkaline solution, wherein component A is a cold-stable aqueous dispersion consisting essentially of (a) from 25% to 35% by weight of a substantially unsaturated fatty acids, (b) from 10% to 16% by weight of a potassium soap of the fatty acids of (a), (c) from 15% to 25% by weight of an ethoxylated primary alcohol having 5 to 12 oxyethylene units, (d) from 4% to 10% by weight of a sodium C10-14 alkylbenzenesulfonate, (e) from 0.05% to 1% by weight of at least one optical brightener, (f) from 1% to 5% by weight of at least one hydrotropic compound, (g) from 2% to 10% by weight of at least one C1-3 alcohol, and (h) from 15% to 30% by weight of water, and wherein component B is an alkaline solution containing alkaline potassium compounds.

Description

Unter Zwei-Komponenten-Waschmitteln versteht man aus zwei getrennt hergestellten und gelagerten Waschmittelbestandteilen bestehende Zubereitungen, die erst unmittelbar vor bzw. zu Beginn des Waschprozesses miteinander vereinigt werden. Die vorliegende Erfindung betrifft ein solches Mittel, in dem die eine Komponente als ein Fettsäuren sowie weitere Tenside enthaltendes Flüssigkonzentrat vorliegt und die andere Komponente das zur Seifenbildung benötigte Alkali enthält.Two-component detergents are understood to mean preparations consisting of two separately produced and stored detergent constituents which are only combined with one another immediately before or at the start of the washing process. The present invention relates to such an agent in which the liquid concentrate contains one component as a fatty acid and further surfactants and the other component contains the alkali required for soap formation.

Aus der GB-A 338 121 ist ein Waschverfahren unter Verwendung eines Zwei-Komponenten-Waschmittels bekannt. Die 1. Komponente besteht aus seifenbildenden Fettsäuren, wie Palmitinsäure, Stearinsäure oder Ölsäure, die im Gemisch mit Emulgiermitteln bzw. Lösungsmitteln, wie sulfatiertem Olivenöl, Kohlenwasserstoffen, Tertpentin und Chlorkohlenwasserstoffen, vorliegen können. Die 2. Komponente enthält die zur Seifenbildung benötigten Alkalien, wie Alkalihydroxide, -carbonate, -bicarbonate, und -silikate, und wird mit der 1. Komponente erst in der Waschflotte vereinigt. Ausserdem können noch Bleichkomponenten zugesetzt werden. Dieses Verfahren weist eine Reihe von Nachteilen auf, die insbesondere in gewerblichen Wäschereien mit hohem Automationsgrad eine Rolle spielen. So lassen sich die genannten Fettsäuren nur schlecht automatisch fördern und dosieren, während die Mitverwendung von Lösungsmitteln aus der Reihe der Kohlenwasserstoffe bzw. der Chlorkohlenwasserstoffe erhebliche Probleme, wie erhöhte Brand- und Explosionsgefahr bzw. toxikologische Bedenken, aufwirft. Ausserdem verläuft die Umsetzung zwischen den in der Waschflüssigkeit nicht hinreichend fein dispergierten Fettsäuren und dem Alkali verhältnismässig langsam, insbesondere bei Waschtemperaturen unterhalb 65°C. die Reaktion wird überdies durch die anwesende Wäsche gehemmt bzw. teilweise unterbunden, so dass es zur Bildung von Fettsäureablagerungen auf dem Waschgut kommen kann.GB-A 338 121 discloses a washing process using a two-component detergent. The first component consists of soap-forming fatty acids, such as palmitic acid, stearic acid or oleic acid, which can be present in a mixture with emulsifiers or solvents, such as sulfated olive oil, hydrocarbons, tertpentine and chlorinated hydrocarbons. The second component contains the alkalis required for soap formation, such as alkali metal hydroxides, carbonates, bicarbonates and silicates, and is only combined with the first component in the wash liquor. Bleaching components can also be added. This process has a number of disadvantages, which play a role in particular in commercial laundries with a high degree of automation. For example, the fatty acids mentioned are difficult to convey and dose automatically, while the use of solvents from the series of hydrocarbons or chlorinated hydrocarbons poses considerable problems, such as increased risk of fire and explosion or toxicological concerns. In addition, the reaction between the fatty acids which are not sufficiently finely dispersed in the washing liquid and the alkali is relatively slow, especially at washing temperatures below 65 ° C. the reaction is also inhibited or partially prevented by the laundry present, so that fatty acid deposits can form on the laundry.

Ein weiteres, aus der FR-A 1 460 904 bekanntes Verfahren geht von wässrigen, zur Seifenbildung geeigneten Fettsäureemulsionen aus, die in der Waschlauge mit den Waschalkalien vereinigt werden. Die Fettsäure, bei der es sich vorzugsweise um technische Ölsäure bzw. um ein niedrigschmelzendes Fettsäuregemisch (Titer 45°C) handelt, wird mit einem nichtionischen Emulgator, wie Polyoxyethylensorbitan-monolaurat bzw. -monostearat, gegebenenfalls unter Zusatz von destilliertem Tallöl, in Wasser emulgiert. Alkalisch reagierende Stoffe dürfen nicht zugesetzt werden, da diese zu einem Brechen der Emulsionen führen. Es hat sich nun gezeigt, dass das Reinigungsvermögen der Mittel vergleichsweise gering ist, da die verwendeten Emulgatoren nicht nennenswert zur Waschkraft beitragen. Weiterhin ist die Beständigkeit, insbesondere die Kältestabilität der Emulsionen mangelhaft, da es unterhalb des Gefrierpunktes zu Entmischungen kommt, die sich nach dem Erwärmen nicht mehr ohne weiteres rückgängig machen lassen.Another process known from FR-A 1 460 904 starts from aqueous fatty acid emulsions suitable for soap formation, which are combined with the washing alkalis in the wash liquor. The fatty acid, which is preferably technical oleic acid or a low-melting fatty acid mixture (titer 45 ° C.), is emulsified in water with a nonionic emulsifier, such as polyoxyethylene sorbitan monolaurate or monostearate, optionally with the addition of distilled tall oil . Substances with an alkaline reaction must not be added, as these will break the emulsions. It has now been shown that the cleaning power of the detergents is comparatively low, since the emulsifiers used do not make any notable contribution to the detergency. Furthermore, the stability, in particular the low-temperature stability, of the emulsions is poor, since segregation occurs below the freezing point, which cannot be easily reversed after heating.

Trotz dieser Probleme besteht weiterhin Interesse an flüssigen Mitteln der vorgenannten Art, insbesondere in Form hochkonzentrierter Zubereitungen. Hochkonzentrierte Mittel gestatten es, die Kosten für Verpackung, Transport und Lagerung niedrig zu halten. Als Flüssigmittel besitzen sie ausserdem den Vorteil der leichten Förder-und Dosierbarkeit. Dies bietet nicht nur für gewerbliche Wäschereien, die mit entsprechenden Ansatz- und Vorratstanks ausgestattet sind, entscheidende Vorteile, sondern auch für die z. Zt. in Entwicklung begriffenen, mit Vorrats- und Dosiervorrichtungen ausgerüsteten Haushaltswaschmaschinen. Bei diesen neuartigen Geräten ist die Waschmitteldosierung auf das jeweilige Waschprogramm speziell abgestimmt, wodurch unerwünschte bzw. abwasserbelastende Fehldosierungen vermieden werden.Despite these problems, there is still interest in liquid agents of the aforementioned type, in particular in the form of highly concentrated preparations. Highly concentrated agents make it possible to keep packaging, transport and storage costs low. As a liquid, they also have the advantage of being easy to convey and dose. This not only offers decisive advantages for commercial laundries that are equipped with appropriate batch and storage tanks, but also for the z. Household washing machines currently in development, equipped with storage and dosing devices. With these new devices, the detergent dosage is specifically matched to the respective washing program, which prevents undesirable or wastewater-incorrect dosing.

Gegenstand der Erfindung, mit denen die geschilderten Nachteile vermieden bzw. die genannten Probleme gelöst werden, ist ein aus zwei Komponenten A und B bestehendes Waschmittel, wovon die Komponente A aus einer wässrigen Dispersion seifenbildender Fettsäuren mit 12 bis 18 Kohlenstoffatomen und die Komponente B aus einer wässrigen Lösung alkalisch reagierender, zur vollständigen Seifenbildung mit den Fettsäuren der Komponente A befähigter Stoffe sowie gegebenenfalls sequestrierender Verbindungen besteht, dadurch gekennzeichnet, dass die Komponente A wie folgt zusammengesetzt ist:

  • a) 25 bis 35 Gew.-% einer Fettsäure mit 12 bis 18 Kohlenstoffatomen, die zu 60 bis 100 Gew.-% aus Ölsäure besteht,
  • b) 10 bis 16 Gew.-% einer Kaliumseife, die sich von einer Fettsäure der unter (a) angeführten Zusammensetzung ableitet,
  • c) 15 bis 25 Gew.-% eines ethoxylierten primären linearen bzw. in 2-Stellung methylverzweigten Alkohols mit 8 bis 14 Kohlenstoffatomen und durchschnittlich 5 bis 12 Ethalenglycolethergruppen,
  • d) 4 bis 10 Gew.-% eines Natriumalkylbenzolsulfonats mit linearen, 10 bis 14 Kohlenstoffatomen aufweisenden Alkylketten,
  • e) 0,05 bis 1 Gew.-% mindestens eines optischen Aufhellers aus der Klasse der substituierten Stilbensulfonsäuren in Form des Na- oder K-Salzes,
  • f) 1 bis 5 Gew.-% mindestens einer hydrotropen Verbindung aus der Klasse des Harnstoffs und der Na- oder K-Salze von Alkylbenzolsulfonaten mit 1 bis 2 Alkylgruppen, die insgesamt 1 bis 3 Kohlenstoffatome enthalten,
  • g) 2 bis 10 Gew.-% mindestens eines Alkohols mit 1 bzw. 3 Kohlenstoffatomen,
  • h) 15 bis 30 Gew.-% Wasser.
The invention, with which the disadvantages described are avoided or the problems mentioned are solved, is a detergent consisting of two components A and B, of which component A consists of an aqueous dispersion of soap-forming fatty acids with 12 to 18 carbon atoms and component B consists of one aqueous solution of alkaline substances capable of complete soap formation with the fatty acids of component A and optionally sequestering compounds, characterized in that component A is composed as follows:
  • a) 25 to 35% by weight of a fatty acid with 12 to 18 carbon atoms, which consists of 60 to 100% by weight of oleic acid,
  • b) 10 to 16% by weight of a potassium soap which is derived from a fatty acid of the composition mentioned under (a),
  • c) 15 to 25% by weight of an ethoxylated primary linear or methyl-branched alcohol in the 2-position with 8 to 14 carbon atoms and an average of 5 to 12 ethyleneglycol ether groups,
  • d) 4 to 10% by weight of a sodium alkylbenzenesulfonate with linear alkyl chains having 10 to 14 carbon atoms,
  • e) 0.05 to 1% by weight of at least one optical brightener from the class of the substituted stilbene sulfonic acids in the form of the Na or K salt,
  • f) 1 to 5% by weight of at least one hydrotropic compound from the class of the urea and the Na or K salts of alkylbenzenesulfonates with 1 to 2 alkyl groups which contain a total of 1 to 3 carbon atoms,
  • g) 2 to 10% by weight of at least one alcohol with 1 or 3 carbon atoms,
  • h) 15 to 30 wt .-% water.

Die unter (a) aufgeführte Fettsäure besteht zu 60 bis 100 Gew.-%, vorzugsweise 65 bis 95 Gew.-% aus Ölsäure. Ausser Ölsäure können auch mehrfach ungesättigte Fettsäuren, z.B. Linolsäure, in Anteilen von 0 bis 25, vorzugsweise von 1 bis 15 Gew.-% in den Fettsäuren enthalten sein. Der Anteil der gesättigten Fettsäuren mit 12 bis 18 Kohlenstoffatomen beträgt 0 bis 35, vorzugsweise 2 bis 20 Gew.-%, wobei zweckmässigerweise der Anteil der Stearinsäure 5 Gew.-%, insbesondere 3 Gew.-% nicht überschreiten soll. Geeignete Fettsäuregemische weisen beispielsweise die folgende Zusammensetzung auf (in Gew.-%):

  • 0- 10%, vorzugsweise 0,1-5% Laurinsäure,
  • 0- 10%, vorzugsweise 0,1-5% Myristinsäure,
  • 0- 15%, vorzugsweise 1-10% Palmitinsäure,
  • 0- 5%, vorzugsweise 0-3% Stearinsäure, 60-100%, vorzugsweise 65-95% Ölsäure,
  • 0- 25%, vorzugsweise 1-15% Linolsäure.

Der Gehalt der Dispersion an den unter (a) genannten Fettsäuren beträgt vorzugsweise 30 bis 34 Gew.-%.The fatty acid listed under (a) consists of 60 to 100% by weight, preferably 65 to 95 % By weight from oleic acid. In addition to oleic acid, polyunsaturated fatty acids, for example linoleic acid, can also be present in the fatty acids in proportions of 0 to 25, preferably 1 to 15% by weight. The proportion of saturated fatty acids with 12 to 18 carbon atoms is 0 to 35, preferably 2 to 20% by weight, the proportion of stearic acid expediently not exceeding 5% by weight, in particular 3% by weight. Suitable fatty acid mixtures have, for example, the following composition (in% by weight):
  • 0- 10%, preferably 0.1-5% lauric acid,
  • 0-10%, preferably 0.1-5% myristic acid,
  • 0-15%, preferably 1-10% palmitic acid,
  • 0-5%, preferably 0-3% stearic acid, 60-100%, preferably 65-95% oleic acid,
  • 0- 25%, preferably 1-15% linoleic acid.

The content of the fatty acids mentioned under (a) in the dispersion is preferably 30 to 34% by weight.

Die unter (b) genannte Kaliumseife leitet sich von den Fettsäuren vorgenannter Zusammensetzung ab und ist vorzugsweise in Anteilen von 12 bis 15 Gew.-% anwesend.The potassium soap mentioned under (b) is derived from the fatty acids of the aforementioned composition and is preferably present in proportions of 12 to 15% by weight.

Die unter (c) aufgeführten ethoxylierten Alkohole leiten sich von nativen oder synthetischen Alkoholen, insbesondere Oxoalkoholen mit 8 bis 14, vorzugsweise 9 bis 12 Kohlenstoffatomen ab. Die Oxoalkohole können sowohl linear als auch in 2-Stellung methylverzweigt sein. Auch Gemische von nativen und durch Oxoreaktion erhaltenen Alkoholen sind geeignet. Die Zahl der Ethylenglycolethergruppen beträgt im Durchschnitt 5 bis 10, vorzugsweise 6 bis 8. Der Anteil der ethoxylierten Alkohole in den Dispersionen soll 15 bis 25, vorzugsweise 18 bis 22 Gew.-% betragen.The ethoxylated alcohols listed under (c) are derived from native or synthetic alcohols, in particular oxo alcohols having 8 to 14, preferably 9 to 12, carbon atoms. The oxo alcohols can be linearly branched or methyl-branched in the 2-position. Mixtures of native alcohols and alcohols obtained by oxo reaction are also suitable. The number of ethylene glycol ether groups is on average 5 to 10, preferably 6 to 8. The proportion of ethoxylated alcohols in the dispersions should be 15 to 25, preferably 18 to 22% by weight.

Der Bestandteil (d) besteht aus linearem Natriumalkylbenzolsulfonat, insbesondere Dodecylbenzolsulfonat, in Anteilen von 4 bis 10, vorzugsweise 6 bis 8 Gew.-%.The component (d) consists of linear sodium alkylbenzenesulfonate, in particular dodecylbenzenesulfonate, in proportions of 4 to 10, preferably 6 to 8,% by weight.

Die unter (e) aufgeführten optischen Aufheller leiten sich ab von Verbindungen der Formeln

Figure imgb0001
Figure imgb0002
worin die einzelnen Symbole die folgende Bedeutung haben: Me = Na,K

  • R1, R2 = -NHCH3, -NCH3(CH2CH2OH), -N(CH2CH2OH)2
    Figure imgb0003
    R3, R4 = H, -CH3,-Cl, -OCH3, -COOCH3, -CN,-SO2 NR5 R 6,
  • -CONR5R6 mit R5 und R6 = H oder Alkylreste mit 1 bis 3 Kohlenstoffatomen.
The optical brighteners listed under (e) are derived from compounds of the formulas
Figure imgb0001
Figure imgb0002
 where the individual symbols have the following meaning: Me = Na, K
  • R 1 , R 2 = -NHCH 3 , -NCH 3 (CH 2 CH 2 OH), -N (CH 2 CH 2 OH) 2
    Figure imgb0003
     R 3 , R 4 = H, -CH 3 , -Cl, -OCH 3 , -COOCH 3 , -CN, -SO 2 NR 5 R 6 ,
  • -CONR 5 R 6 with R 5 and R 6 = H or alkyl radicals with 1 to 3 carbon atoms.

Bevorzugt werden optische Aufheller der Formel I verwendet, in der R, und R2 Morpholino-, Diethanolamino- oder Anilinoreste darstellen. Die optischen Aufheller liegen in Anteilen von 0,05 bis 1, vorzugsweise von 0,1 bis 0,7 Gew.-% vor.Optical brighteners of the formula I are preferably used, in which R 1 and R 2 represent morpholino, diethanolamino or anilino residues. The optical brighteners are present in proportions of 0.05 to 1, preferably 0.1 to 0.7% by weight.

Die unter (f) aufgeführten hydrotropen Verbindungen können aus Harnstoff und bzw. oder aus niedermolekularen Alkyl- bzw. Dialkylbenzolsulfonaten, wie Toluol-, Ethylbenzol-, Cumol- oder Xylolsulfonat in Form der Na- oder K-Salze vorliegen. Ihr Anteil beträgt vorzugsweise 1,5 bis 3 Gew.-%.The hydrotropic compounds listed under (f) can be present in the form of the Na or K salts from urea and / or from low molecular weight alkyl or dialkylbenzenesulfonates, such as toluene, ethylbenzene, cumene or xylene sulfonate. Their proportion is preferably 1.5 to 3% by weight.

Der Bestandteil (g) besteht aus aliphatischen Cl-C3-Alkoholen, z.B. Ethanol, Propanol und insbesondere Isopropanol sowie aus den Gemischen der genannten Alkohole. Bevorzugt beträgt der Gehalt der Mittel an diesen Alkoholen bis 8 Gew.-%. Mittel mit Anteilen von weniger als 4% der genannten Alkohole können auch hydrotrop wirkende Etheralkohole enthalten, die sich von C,-C4-Monoalkoholen und Ethylenglycol oder Propylenglycol bzw. Diglycolen ableiten. Geeignet sind z.B. die Monomethyl-, Monoethyl-, Monopropyl-, Monoisopropyl- oder Monobutylether des Ethylenglycols.The component (g) consists of aliphatic C 1 -C 3 alcohols, for example ethanol, propanol and in particular isopropanol, and of the mixtures of the alcohols mentioned. The content of these alcohols in the compositions is preferably up to 8% by weight. Agents with fractions of less than 4% of the alcohols mentioned can also contain hydrotropic ether alcohols which are derived from C 1 -C 4 -monoalcohols and ethylene glycol or propylene glycol or diglycols. For example, the monomethyl, monoethyl, monopropyl, monoisopropyl or monobutyl ethers of ethylene glycol are suitable.

Der Wassergehalt des Waschmittelkonzentrates beträgt 15 bis 30%, vorzugsweise bis 22 Gew.-%. Die Konzentrate sind innerhalb eines Temperaturbereiches zwischen +50°C und -10°C unbegrenzt lagerbeständig. Sie werden zwar nach mehrwöchiger Lagerung bei einer Temperatur von -10°C pastenartig, neigen jedoch selbst unter derartig extremen Bedingungen nicht zum Entmischen, sondern bilden nach dem Wiedererwärmen wieder gut geniessbare, weitgehend klare Flüssigkeiten.The water content of the detergent concentrate is 15 to 30%, preferably up to 22% by weight. The concentrates are within a temperature range between + 50 ° C and -10 ° C unlimited storage stability. Although they become pasty after storage for several weeks at a temperature of -10 ° C, they do not tend to segregate even under such extreme conditions, but instead form well-edible, largely clear liquids after reheating.

An weiteren Zusatzstoffen können noch Biocide, Duftstoffe, Farbstoffe, Stabilisierungsmittel, Sequestrierungsmittel, Neutralsalze und optische Aufheller anderer Konstitution anwesend sein, jedoch soll der Anteil an derartigen Zusatzstoffen insgesamt 10 Gew.-% nicht überschreiten und vorzugsweise weniger als 5 Gew.-%, insbesondere weniger als 2 Gew.-% betragen, damit ein negativer Einfluss auf die Kältestabilität vermieden wird.Other additives may also include biocides, fragrances, dyes, stabilizers, sequestering agents, neutral salts and optical brighteners of other constitution, but the total amount of such additives should not exceed 10% by weight and preferably less than 5% by weight, in particular less than 2 wt .-%, so that a negative influence on the cold stability is avoided.

Die Komponente B, die vor oder zu Beginn des Waschprozesses mit der vorstehend beschriebenen Dispersion unter Bildung von fettsauren Seifen vereinigt wird, besteht im einfachsten Falle aus einer wässrigen Lösung von Alkalien, beispielsweise den Hydroxiden, Carbonaten, Silikaten, Phosphaten und Polyphosphaten des Natriums bzw. Kaliums bzw. von Gemischen der genannten alkalisch reagierenden Verbindungen. Ihre Alkalität sowie ihre Menge ist so zu bemessen, dass die Fettsäuren vollständig in die Seifen überführt werden und darüber hinaus noch ein Alkaliüberschuss vorhanden ist, so dass der pH-Wert der Waschlauge 9,5 bis 14, vorzugsweise mindestens 10 und insbesondere 10,2-13,5 beträgt. Ausser den Alkalien bzw. den sequestrierend wirkenden Polyphosphaten können noch weitere sequestrierend wirkende Verbindungen anwesend sein, z.B. die Na- oder K-Salze von Polycarbonsäuren, Hydroxy- bzw. Etherpolycarbonsäuren, Aminopolycarbonsäuren, Hydroxyalkanphosphonsäuren und Aminopolyphosphonsäuren. Beispiele für besonders gebräuchliche Verbindungen sind Nitrilotriessigsäure, Ethylendiaminotetraessigsäure, Diethylentriaminopentaessigsäure, 1-Hydroxyethan-1,1-diphosphonsäure und 1 -Aminoethan-1,1 -diphosphonsäure.In the simplest case, component B, which is combined with the dispersion described above to form fatty acid soaps before or at the start of the washing process, consists of an aqueous solution of alkalis, for example the hydroxides, carbonates, silicates, phosphates and polyphosphates of sodium or Potassium or mixtures of the alkaline compounds mentioned. Their alkalinity and their amount is to be dimensioned such that the fatty acids are completely converted into the soaps and there is also an excess of alkali, so that the pH of the wash liquor is 9.5 to 14, preferably at least 10 and in particular 10.2 Is -13.5. In addition to the alkalis or the sequestering polyphosphates, other sequestering compounds may be present, e.g. the Na or K salts of polycarboxylic acids, hydroxy or ether polycarboxylic acids, aminopolycarboxylic acids, hydroxyalkanephosphonic acids and aminopolyphosphonic acids. Examples of particularly common compounds are nitrilotriacetic acid, ethylenediaminotetraacetic acid, diethylenetriamineopentaacetic acid, 1-hydroxyethane-1,1-diphosphonic acid and 1-aminoethane-1,1-diphosphonic acid.

Eine flüssige, leicht dosierbare und insbesondere kältebeständige Lösung von Waschalkalien, die sich zum Einsatz in automatisierten Wäschereibetrieben als besonders gut geeignete Komponente B erwiesen hat, weist die folgende Zusammensetzung auf:

  • 0,5-5 Gew.-% Natriumtripolyphosphat,
  • 0-25 Gew.-% Kaliumtripolyphosphat,
  • wobei die Gesamtmenge an Tripolyphosphaten vorzugsweise 5 bis 20 Gew.-% beträgt,
  • 0-10 Gew.-%, vorzugsweise 1 bis 5 Gew.-% Natriumsilikat der Zusammensetzung Na2 o:Si02 = 1:1-1:3,5,
  • 0,5-5 Gew.-% Natriumethylendiaminotetraacetat,
  • 10-25 Gew.-%, vorzugsweise 15 bis 22 Gew.-% Kaliumhydroxid,
  • Rest Wasser.
A liquid, easily metered and in particular cold-resistant solution of washing alkalis, which has proven to be particularly suitable as component B for use in automated laundry operations, has the following composition:
  • 0.5-5% by weight sodium tripolyphosphate,
  • 0-25% by weight potassium tripolyphosphate,
  • the total amount of tripolyphosphates is preferably 5 to 20% by weight,
  • 0-10 wt .-%, preferably 1 to 5 wt .-% sodium silicate of the composition Na 2 o : Si0 2 = 1: 1-1: 3.5,
  • 0.5-5% by weight sodium ethylenediaminotetraacetate,
  • 10-25% by weight, preferably 15 to 22% by weight of potassium hydroxide,
  • Rest of water.

Das Mischungsverhältnis der Komponente A mit der flüssigen Komponente B gemäss vorstehender Zusammensetzung beträgt 1:1 bis 1:4, vorzugsweise 1:2 bis 1:3, wobei die Gesamtmenge aller waschwirksamen Bestandteile und Waschalkalien in der Waschflotte 5 g bis 30 g, vorzugsweise 10 bis 25 g pro kg Trockenwäsche beträgt.The mixing ratio of component A with liquid component B according to the above composition is 1: 1 to 1: 4, preferably 1: 2 to 1: 3, the total amount of all detergent components and washing alkalis in the washing liquor being 5 g to 30 g, preferably 10 is up to 25 g per kg of dry laundry.

Gegenstand der Erfindung ist weiterhin ein Waschverfahren unter Verwendung der beiden Komponenten A und B entsprechend vorgenannter Zusammensetzungen, Mischungsverhältnisse und Anwendungskonzentrationen. Bei diesen Waschverfahren können noch weitere Komponenten zugefügt werden, beispielsweise zum Kationenaustausch befähigte Natriumaluminiumsilikate gemäss DE-AS 2412 837, Vergrauungsinhibitoren, wie Celluloseether und Cellulosemischether, Enzyme sowie Aktivsauerstoff bzw. Aktivchlor enthaltende Bleichmittel, gegebenenfalls unter Zusatz von Bleichaktivatoren. Soweit es die Stabilität der betreffenden Verbindungen zulassen, liegen sie ebenfalls vorzugsweise als Lösungen oder Dispersionen vor, wobei einer mangelnden Stabilität erforderlichenfalls durch Einkapseln der Wirkstoffe begegnet werden kann.The invention further relates to a washing process using the two components A and B in accordance with the aforementioned compositions, mixing ratios and use concentrations. In these washing processes, further components can be added, for example sodium aluminum silicates capable of cation exchange in accordance with DE-AS 2412 837, graying inhibitors, such as cellulose ethers and cellulose mixed ethers, enzymes and bleaching agents containing active oxygen or active chlorine, optionally with the addition of bleach activators. Insofar as the stability of the compounds in question permits, they are also preferably in the form of solutions or dispersions, it being possible, if necessary, to counteract a lack of stability by encapsulating the active compounds.

BeispieleExamples

Die in den Rezepturen verwendeten Fettsäuren (a) bzw. in den Kaliumseifen (b) enthaltenen Fettsäuren wiesen die folgende Zusammensetzung (in Gew.-%) auf:

Figure imgb0004
The fatty acids (a) used in the recipes and the fatty acids contained in the potassium soaps (b) had the following composition (in% by weight):
Figure imgb0004

Als ethoxylierter Alkohol (Komponente c) wurde ein Oxoalkohol der Kettenlänge CS-C11 mit 7 Ethylenglycolethergruppen verwendet. Die Komponente d bestand aus linearem Na-Dodecylbenzolsulfonat. Als optischerAufheller (Komponente e) wurde das Natriumsalz der Verbindung gemäss Formel I verwendet, worin RI und R2 Morpholinoreste bedeuteten. Als Hydrotrop (Komponente f) wurde Harnstoff bzw. K-Toluolsulfonat verwendet. Die Komponente g bestand aus Isopropanol. Unter dem Bestandteil «Salze» werden geringe Mengen an Na2S04 und NaCI verstanden, die als Begleitstoffe des Alkylbenzolsulfonats und des optischen Aufhellers vorlagen. Die Zusammensetzung ist der Tabelle 2 zu entnehmen.

Figure imgb0005
Figure imgb0006
 An oxo alcohol of chain length C S -C 11 with 7 ethylene glycol ether groups was used as the ethoxylated alcohol (component c). Component d consisted of linear Na dodecylbenzenesulfonate. The sodium salt of the compound of the formula I in which R I and R 2 were morpholino radicals was used as the optical brightener (component e). Urea or K-toluenesulfonate was used as the hydrotrope (component f). Component g consisted of isopropanol. The component “salts” means small amounts of Na 2 S0 4 and NaCl, which were present as accompanying substances of the alkylbenzenesulfonate and the optical brightener. The composition is shown in Table 2.
Figure imgb0005
Figure imgb0006

Zwecks Herstellung der Mittel wurden zunächst die Fettsäure mit der zur Seifenbildung erforderlichen Menge Kalilauge sowie dem Ethoxylat und dem Alkylbenzolsulfonat, das als 50%ige wässrige Lösung vorlag, miteinander vermischt, darauf der in Isopropanol gelöste optische Aufheller eingerührt und abschliessend das Hydrotrop sowie Wasser bis zur angegebenen Menge zugefügt.For the preparation of the agents, the fatty acid was first mixed with the amount of potassium hydroxide solution required for soap formation as well as the ethoxylate and the alkylbenzenesulfonate, which was in the form of a 50% aqueous solution, then the optical brightener dissolved in isopropanol was stirred in, and finally the hydrotrope and water up to specified amount added.

Die Konzentrate lagen als gelblich gefärbte, klare bis leicht irisierende, bei Raumtemperatur dünnflüssige Lösungen vor, die bei dreiwöchiger Lagerung im Klimaschrank bei -10°C und +50°C klar und homogen blieben. Ein mehrfacher Temperaturwechsel zwischen +50°C und -10°C führte ebenfalls nicht zu Entmischungen. Die Konzentrate waren in jedem Verhältnis mit Wasser mischbar.The concentrates were in the form of yellowish, clear to slightly iridescent solutions which were thin at room temperature and remained clear and homogeneous when stored for three weeks in a climatic cabinet at -10 ° C and + 50 ° C. A multiple temperature change between + 50 ° C and -10 ° C also did not lead to segregation. The concentrates were miscible with water in all proportions.

Als alkalische Komponente B wurden folgende Lösungen verwendet (Mengenangaben in Gew.-%):

Figure imgb0007
The following solutions were used as alkaline component B (amounts given in% by weight):
Figure imgb0007

Die Lösungen erwiesen sich in einem Temperaturbereich von -10°C bis +50°C als stabil. Zur Waschbehandlung wurden jeweils folgende Mengenanteile miteinander kombiniert.The solutions proved to be stable in a temperature range from -10 ° C to + 50 ° C. The following proportions were combined with one another for washing treatment.

EinlaugenverfahrenSoaking process

5-10 g Komponente A pro kg Trockenwäsche 12-15 g Komponente B pro kg Trockenwäsche5-10 g component A per kg dry wash 12-15 g component B per kg dry wash

ZweilaugenverfahrenTwo-eye procedure Vorwäscheprewash

3-6 g Komponente A pro kg Trockenwäsche 12-15 g Komponente B pro kg Trockenwäsche Klarwäsche3-6 g component A per kg dry wash 12-15 g component B per kg dry wash clear wash

2-5 g Komponente A pro kg Trockenwäsche 5-8 g Komponente B pro kg Trockenwäsche2-5 g component A per kg dry wash 5-8 g component B per kg dry wash

Bei einem Flottenverhältnis (kg Trockenwäsche pro 1 Waschlauge) von 1:4 bis 1:10 unter Verwendung von enthärtetem Wasser wurden einwandfreie Waschergebnisse erzielt.With a liquor ratio (kg dry wash per 1 wash liquor) of 1: 4 to 1:10 using softened water, perfect washing results were achieved.

Claims (11)

1. A liquid cold-stable detergent consisting of two components A and B of which component A consists of an aqueous dispersion of soap-forming fatty acids containing from 12 to 18 carbon atoms and component B of an aqueous solution of alkaline-reacting substances capable of complete soap formation with the fatty acids of component A and, optionally, sequestering compounds, characterised in that component A has the following composition:
a) 25 to 35% by weight of a fatty acid containing from 12 to 18 carbon atoms, of which from 60 to 100% by weight consists of oleic acid,
b) 10 to 16% by weight of a potassium soap derived from a soap having the composition defined in (a) above,
c) 15 to 25% by weight of an ethoxylated primary linear alcohol containing 8 to 14 carbon atoms and on average 5 to 12 ethylene glycol ether groups or of an identical alcohol methyl- branched in the 2-position,
d) 4 to 10% by weight of a sodium alkyl benzene sulfonate having linear alkyl chains containing from 10 to 14 carbon atoms,
e) 0.05 to 1% by weight of at least one optical lightener from the class comprising substituted stilbene sulfonic acids in the form of the Na- or K-salt,
f) 1 to 5% by weight of at least one hydrotropic compound from the class of urea and the Na- or K-salts of alkyl benzene sulfonates containing 1 to 2 alkyl groups and a total of 1 to 3 carbon atoms,
g) 2 to 10% by weight of at least one alcohol containing 1 or 3 carbon atoms,
h) 15 to 30% by weight of water.
2. A detergent as claimed in Claim 1, characterised in that 65 to 95% by weight of the fatty acid mentioned in (a) consists of oleic acid, the fatty acid containing no more than 3% by weight of stearic acid and being present in quantities of from 30 to 34% by weight.
3. A detergent as claimed in Claim 1, characterised in that the potassium soap mentioned in (b) is derived from a fatty acid of the type mentioned in Claim 2 and is present in quantities of from 12to 15% by weight.
4. A detergent as claimed in Claim 1, characterised in that the ethoxylated alcohols mentioned in (c) contain from 9 to 12 carbon atoms and from 6 to 8 ethylene glycol ether groups and are present in quantities of from 18 to 22% by weight.
5. A detergent as claimed in Claim 1, characterised in that the alkyl benzene sulfonate mentioned in (d) is present in the form of Na-dodecyl benzene sulfonate in quantities of from 6 to 8% by weight.
6. A detergent as claimed in Claim 1, characterised in that the optical lighteners mentioned in
(e) consist of compounds corresponding to the following formulae:
Figure imgb0011
Figure imgb0012
in which
Me = Na, K
RlR2 = -NHCH3,-NCH3,(CH2CH2OH),-N(CH2CH2OH)2
Figure imgb0013
R3,R4 = H, -CH3, -Cl, -OCH3, COOCH3, -CN,-S02-NR5R6, -CONR5R6 where R5 and R6 = H or alkyl radicals containing from 1 to 3 carbon atoms.
7. A detergent as claimed in Claim 1, characterised in that the hydrotropic compounds mentioned in (f) are present in quantities of from 1.5 to 3% by weight.
8. A detergent as claimed in Claim 1, characterised in that the alcohol mentioned in (g) consists of isopropanol and is present in quantities of from 3 to 8% by weight.
9. A detergent as claimed in Claim 1, characterised in that the water content amounts to between 16 and 22% by weight.
10. A washing process using a detergent component A and another component B containing at least one alkaline-reacting hydroxide, carbonate, silicate, phosphate or polyphosphate of sodium and/or potassium according to Claims 1 to 9 in such a quantity that, after combination of the two components before or at the beginning of washing, the washing solution has a pH-value of from 9.5 to 14 and preferably from 10.2 to 13.5 and the total quantity of all the washing-active constituents and washing alkalis in the washing solution amounts to between 5 g and 30 g and preferably to between 10 g and 25 g per kg of dry washing.
11. A washing process as claimed in Claim 10, characterised in that a solution having the following composition:
0.5 to 5% by weight of sodium tripolyphosphate, 0 to 25% by weight of potassium tripolyphosphate, the total quantity of tripolyphosphates preferably amounting to between 5 and 20% by weight,
0 to 10% by weight and preferably 1 to 5% by weight of sodium silicate consisting of Na20 and Si02 in a ratio of from 1:1 to 1:3.5,
0.5 to 5% by weight of sodium ethylene diamino- tetraacetate,
10 to 25% by weight and preferably 15 to 22% by weight of potassium hydroxide,
balance water
is used as component B in a ratio of A:B of from 1:1 to 1:4 and preferably from 1:2 to 1:3.
EP79104169A 1978-11-02 1979-10-29 Liquid, cold-stable two-component washing agent and washing process Expired EP0011715B1 (en)

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DE2847437A DE2847437C2 (en) 1978-11-02 1978-11-02 Process for the production of washing liquors

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DE2933579A1 (en) * 1979-08-18 1981-03-26 Henkel KGaA, 40589 Düsseldorf WASHING PROCEDURE
IT1147874B (en) * 1982-04-30 1986-11-26 Colgate Palmolive Co INDUSTRIAL WASHING PROCESS AND COMPOSITION
DE3246124A1 (en) * 1982-12-13 1984-06-14 Henkel KGaA, 4000 Düsseldorf CLEANING PROCEDURE
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US5604192A (en) * 1994-06-22 1997-02-18 The Procter & Gamble Company Hard surface detergent compositions
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