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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/30—Amines; Substituted amines ; Quaternized amines
• • 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

Definitions

• the invention relates to alkaline detergent and cleaning agent compositions containing alkylbenzenesulfonates and alkanolamines and a method for washing or cleaning using such compositions and using wash water rich in calcium ions.
• the invention relates in particular the use of alkanolamines to improve the hardness stability of Alkylbenzenesulfonates in alkaline washing and cleaning agents and the delay the precipitation of calcium carbonate from such detergent and cleaning agent compositions.
• Sodium alkylbenzenesulfonates especially those with linear alkyl radicals (LAS) are surfactants that because of their washing power, biodegradability and inexpensive production in detergents and cleaning agents widely used become.
• These detergents and cleaning agents contain e.g. LAS typically in amounts of 3 to 30% by weight in addition to generally other known components, such as builders, bleaches, fragrances, foam inhibitors, etc..
• alkanolamines in detergents and cleaning agents are also known. These are used, among other things, to neutralize anionic surfactants. It is known that the neutralization products with anionic surfactants Alkanolamines, in contrast to the use of alkali metal salts and as Advantage over these, the formation of liquid crystalline surfactant phases in Prevent wording.
• WO 96/07724 describes single-phase Soap gels and viscous soap formulations in which the neutralization products of fatty acids with the alkanolamines, such as triethanolamines, for the preparation homogeneous formulations are used.
• US 4,105,592 describes a liquid detergent containing non-ionic and anionic surfactants in addition to alkanolamines and minor proportions of additives such as fatty acid based corrosion inhibitors and alkali salts.
• the Alkanolamines are used to neutralize alkylbenzenesulfonic acids and others acidic components used, the alkanolamines preferably in Excess can be used to act as a buffer in the formulation act and ensure a pH of 7 to 9.
• alkanolamines are used exclusively Called C1- or C2-alkanolamines.
• Tap water is often used as a washing and cleaning solvent, which u. a. Contains calcium and magnesium ions (hard tap water).
• Anionic Surfactants such as Alkylbenzenesulfonates or fatty alcohol sulfates with the hard ions poorly soluble salts. If the anionic surfactant falls as less soluble Precipitation, so that part of the surfactant is not more is available for cleaning, making the concentration of wash-active Substance in the liquor is reduced and a reduced washing result results. Furthermore, the sparingly soluble precipitate has the property of itself fix the substrate to be cleaned.
• One observes with the textile washing hence an increase in textile incrustation. When cleaning hard surfaces Precipitation or streaks form on the surface, e.g. to a Decrease in gloss.
• the hardening ions not only get into the wash liquor through the water used, but are also often part of the dirt. Occasionally, too the detergents themselves contain calcium or magnesium ions to make special Advantages in cleaning performance, builder effect or detergent packaging to obtain. In this case, by using cobuilders, Complexing agents or the like the deposit of poorly soluble calcium or Magnesium deposits on the substrate to be cleaned can be prevented.
• R a , R b or R c are divalent linear or branched hydrocarbons, which are preferably linear and are substituted in the 1,2-position by oxygen or nitrogen.
• the hydrocarbons R a , R b or R c in total preferably have at least 5 and at most 15 carbon atoms, particularly preferably at least 6, better still at least 7 and at most 12 carbon atoms.
• the alkanolamines used according to the invention preferably have at least two isopropanol radicals.
• the alkylbenzenesulfonic acids or their salts have a linear alkyl radical having 8 to 24 carbon atoms.
• Components (A) and (B) can also be in a ratio based on the molar concentration from 2 to 1 to 1 to 2, preferably 1.2 to 1 to 1 to 0.8 can be used.
• the builder fraction (C) is the detergent and cleaning composition preferably 0.1 to 5% by weight, based on the total composition. In a particularly preferred embodiment the presence of insoluble builder is completely dispensed with.
• Solid formulations can e.g. at least about 0.5% by weight, liquid formulations and contain granulated formulations of 5 to 50% by weight of builder. It Both inorganic and organic systems can be used. They are used in detergent formulations to remove particle dirt to support and control the water hardness.
• the inorganic builders include, without the formulations according to the invention to be limited to alkali, ammonium and alkanolammonium salts polyphosphates (e.g. tripolyphosphates, pyrophosphates and polymeric metaphosphates), Phosphonates, silicates, carbonates (also bicarbonates and sesquicarbonates), Sulfates and aluminosilicates.
• polyphosphates e.g. tripolyphosphates, pyrophosphates and polymeric metaphosphates
• Phosphonates e.g. tripolyphosphates, pyrophosphates and polymeric metaphosphates
• silicates e.g. tripolyphosphates, pyrophosphates and polymeric metaphosphates
• carbonates also bicarbonates and sesquicarbonates
• Sulfates and aluminosilicates e.g., aluminosilicates.
• Magnesium silicates can also be used here.
• Aluminum silicates are also useful in the formulations of the invention and particularly important in granular detergent formulations.
• aluminosilicate builders that can be used can be described by the empirical formula [M z (zAlO 2 ) y ] .xH 2 O, where z and y assume values of at least 6, the molar ratio of z to y in the range from 1.0 to 0. 5 lies, x can take values from approx. 0 to 30. It can be crystalline as well as amorphous, synthetic or naturally occurring aluminosilicates.
• Organic builders are also among those in the formulations according to the invention usable builders. These include polycarboxylates, such as ether carboxylates, cyclic or acyclic, hydroxypolycarboxylates, copolymers of maleic anhydride and ethylene or vinyl methyl ether, 1,3,5-trihydroxybenzene-2,4,6-trisulfonic acid and carboxymethyloxy succinic acid, all in the form of the acid or their alkali, ammonium or organoammonium salts can be used can. Alkyl, ammonium or organoammonium salts of polyacetic acid are as well as salts of citric acid or combinations of different Builders. Alkenyl succinic acids and salts are particularly preferred organic builder. Monocarboxylic acid salts can also be used either alone or in Combination with one of the aforementioned builders in the formulations according to the invention be incorporated.
• polycarboxylates such as ether carboxylates, cyclic or acyclic,
• composition according to the invention is advantageous for washing and / or Cleaning using additives containing divalent metal salts, in particular Calcium used, e.g. in compositions containing water and calcium ions in a concentration of 0.2 to 6 mmol / l in the washing composition.
• additives containing divalent metal salts, in particular Calcium used e.g. in compositions containing water and calcium ions in a concentration of 0.2 to 6 mmol / l in the washing composition.
• composition of the invention also relates to a product which by neutralizing the alkylbenzenesulfonic acids used according to the invention with the alkanolamine used according to the invention.
• alkanolamines used according to the invention are triisopropanolamine, Diethanol monoisopropanolamine, monoethanolamine diisopropanolamine, butanol isopropanolamine, Hexanolisopropanolamine etc. or mixtures of these like e.g. a mixture of mono-, di- and triisopropanolamine.
• Alkonolamines used are also those obtained by alkoxylation, e.g. with propylene oxide, e.g. Ammonia, alkanolamines or alkylamines accessible are.
• the alkanolamines according to the invention surprisingly reduce the amount of calcium carbonate in the precipitation.
• Inhibiting the filling of calcium carbonate in the presence of alkylbenzenesulfonates used according to the invention and Alkonolaminen can also by qualitative and quantitative Determination of the residue can be determined after filtration of a solution.
• simple measurement method also offers tracking of the turbidity and the surface tension.
• Inhibiting in the sense of the invention does not necessarily mean complete Suppression of poorly soluble calcium precipitation, but can in According to the invention, a delay in calcium precipitation under application-related conditions Conditions.
• the incrustations formed after repeated washing lead to a deterioration in the wearing properties of textiles and to Increase in graying.
• New textiles have e.g. an ash content of less than 0.5% by weight. With increasing number of washes increases depending on the detergent used, water hardness, Washing temperature, fabric, etc, the ash content. After 25 washes are with commercial detergents and a medium water hardness Ash contents of 3% by weight and higher are quite common.
• the washing and cleaning solutions can be used in addition to those used according to the invention Alkanolamines contain other ingredients.
• the invention Detergents and cleaning agents can be anionic (a), nonionic (b) or cationic Contain surfactants (c). Mixtures are typically used in Central Europe from anionic and nonionic products used, the synergistic Show washing effects and are often combined with soaps.
• the amount of surfactant in the detergent and cleaning composition according to the invention if these are available as powder detergents, it is preferably 3 up to 70% by weight, for liquid formulations preferably 15 to 80% by weight.
• the Washing and cleaning agents according to the invention can also be used as anhydrous Liquid formulations are available. These point to conventional ones Liquid formulations have an advantageously low viscosity.
• Liquid detergents can also include water, alcohols, or other solubilizers contain.
• the water content of liquid detergents is, for example between 40 and 80% by weight.
• liquid are also anhydrous Detergent object of the invention.
• the detergent formulations according to the invention can also be powdery types and granules or are pasty or liquid products.
• the detergents according to the invention can be used in a manner known per se, e.g. produced by mixing, granulating, extruding and / or by spray drying become.
• the builders can contain zeolite and alkali silicate individually incorporated into the means in a manner known per se and in any order become.
• the liquid detergent products can be prepared by mixing of the components.
• the formulations can be detergents or cleaning agents.
• the detergent formulations show both in textile detergents for the household sector as well as in detergents for the commercial sector very good effectiveness.
• the areas of application for cleaning agents are Formulations e.g. Universal cleaner, cleaner for glass, cleaner for metal, Plastic cleaner, floor cleaner and bathroom and toilet cleaner.
• the lowering of the surface tension is simultaneous presence of triisopropanolamine or diisopropanolamine larger than in the solution without alkanolamines according to the invention.
• Sokalan ® CP5 (acrylic acid-maleic acid copolymer, BASF AG), which is used as a cobuilder in washing and cleaning agents, was measured as a reference.
• Diisopropanolamine behaved similarly to triisopropanolamine. Even with diisopropanolamine (DIPA), only a very small proportion of LAS calcium salt precipitates before calcium carbonate fails at approx. 37.5 ° C.
• Sokalan ® CP 5 (acrylic acid-maleic acid copolymer, BASF) used in a concentration of 150 mg / L together with the LAS-Na inhibits the precipitation of calcium carbonate up to a temperature of approx. 60 ° C.
• T. transparency in%
• O. surface tension in mN / m approach
• Table 3 shows the results at a washing temperature of 30 ° C after averaging over all fabric types.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Detergent Compositions (AREA)

Applications Claiming Priority (2)

Publications (3)

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• 1999
  • 1999-05-03 DE DE19920256A patent/DE19920256A1/de not_active Ceased
• 2000
  • 2000-05-03 ES ES00109419T patent/ES2259954T3/es not_active Expired - Lifetime
  • 2000-05-03 EP EP00109419A patent/EP1050575B1/fr not_active Expired - Lifetime
  • 2000-05-03 DE DE50012461T patent/DE50012461D1/de not_active Expired - Fee Related
  • 2000-05-03 AT AT00109419T patent/ATE321833T1/de not_active IP Right Cessation

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