WO2017102866A1 - Composition de détergent liquide structurée - Google Patents

Composition de détergent liquide structurée Download PDF

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Publication number
WO2017102866A1
WO2017102866A1 PCT/EP2016/081045 EP2016081045W WO2017102866A1 WO 2017102866 A1 WO2017102866 A1 WO 2017102866A1 EP 2016081045 W EP2016081045 W EP 2016081045W WO 2017102866 A1 WO2017102866 A1 WO 2017102866A1
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Prior art keywords
detergent composition
alkyl
acid
composition according
alkyl ether
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PCT/EP2016/081045
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English (en)
Inventor
John O'donnell
Brendon REIDY
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Henkel Ag & Co. Kgaa
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Application filed by Henkel Ag & Co. Kgaa filed Critical Henkel Ag & Co. Kgaa
Priority to AU2016372350A priority Critical patent/AU2016372350B2/en
Priority to EP16810388.5A priority patent/EP3390599B1/fr
Publication of WO2017102866A1 publication Critical patent/WO2017102866A1/fr

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    • 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
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0026—Structured liquid compositions, e.g. liquid crystalline phases or network containing non-Newtonian phase
    • 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
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • 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
    • C11D1/83—Mixtures of non-ionic with anionic 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—Carbonates ; Bicarbonates
    • 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
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2086—Hydroxy carboxylic acids-salts 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
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/33—Amino carboxylic acids
    • 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
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/12—Soft surfaces, e.g. textile

Definitions

  • the present invention relates to an aqueous, phosphate-free, structured liquid detergent composition, in particular a heavy duty liquid detergent (HDL) that comprises a surfactant system comprising an alkyl ether sulfate, a builder system and water, wherein the detergent composition has a viscosity of between 1.000 and 10.000 mPas and is free of stabilizing and rheology modifying acrylate-containing polymers.
  • HDL heavy duty liquid detergent
  • the invention further relates to methods for washing of textiles using the detergents of the invention.
  • Liquid detergent compositions are well-known in the art and widely used. Over recent years, the have become more and more popular with the consumers because they offer a number of advantages over solid compositions, including, for example, the ease of dosing, dispensing and dissolving into a laundering liquor. In addition, they are perceived to be safer and less harsh to the textiles and environment compared to solid compositions. In particular for laundering colored fabrics they have gained popularity ever since their introduction on the market.
  • liquid detergent compositions in particular phosphate-free heavy duty liquid (HDL) detergents suffer from physical and chemical instability, such as phase separation, sedimentation, degradation of components and the like, and viscosity problems. This is particularly problematic for highly concentrated formulations.
  • HDL detergents have been introduced as early as the 1970's, the known stable formulations rely on the use of phosphates, in particular sodium tripolyphosphate (STPP), to form structured liquids containing high levels of builders and surfactants.
  • STPP sodium tripolyphosphate
  • multilayered vesicles are formed that stabilize the formulation and prevent precipitation of the anionic surfactants by the builder components.
  • STPP was particularly suited to formation of vesicles with sodium alkylbenzene sulfonate (sodium LAS).
  • STPP was well established as a builder in detergent powders and acts as a chelating agent, inhibits soil re-deposition during the wash and boosts overall detergency. The result of the use of STPP was the development of high
  • this object can be met by a composition that is free of known stabilizing and rheology modifying polymers and comprises a specific surfactant system, builder system and water. It has been demonstrated that such a detergent is stable over a period of 90 days at a temperature of 10-40 ° C, >12 months when stored between 15° and 30°C. Low temperature stability, for example at about 5°C, can be improved by modifying the system to include a nonionic surfactant.
  • the present invention therefore relates to an aqueous, phosphate-free, structured liquid detergent composition
  • a surfactant system e.g., sodium bicarbonate
  • a builder system e.g., sodium bicarbonate
  • the surfactant system comprises at least one alkyl ether sulfate in an amount of between 3.2 and 7.0 wt.-% relative to the total weight of the composition;
  • the composition has a viscosity of between 1.000 and 10.000 mPas at 25°C (Brookfield LVT, Spindle No. 3, 12 rpm), preferably 2.000 to 6.000 mPas;
  • composition is free of stabilizing and rheology modifying acrylate-containing polymers, preferably free of acrylate-containing polymers.
  • the invention relates to methods for cleaning textiles, wherein a washing liquor containing the liquid detergent composition of the present invention contacts the textile in at least one method step.
  • At least one relates to one or more, i.e. 1 , 2, 3, 4, 5, 6, 7, 8, 9, or more. If used in combination with a compound, the term does not relate to the absolute number of molecules but rather to the number of different types of said compound. "At least one alkyl ether sulfate” thus means that at least one type but that also 2 or more different alkyl ether sulfate types can be present.
  • composition Most preferably, said component is not contained at all.
  • the detergent compositions of the present invention can be used as detergents for textiles, carpets or natural fibers.
  • the detergents disclosed herein are heavy duty liquid (HDL) detergents.
  • the present invention is based on the inventors' surprising finding, that by use of a surfactant system comprising at least one alkyl ether sulfate in a certain amount structured liquid detergent compositions may be formed that have the desired viscosity and stability without the need for stabilizing or rheology modifying polymers.
  • Structured liquids are widely used in the field of detergents. They can either be internally structured by one or more of the primary ingredients, such as the surfactants, and/or by using secondary additives, such as certain salts, polymers and/or silicates. Structuring is used to endow the composition with properties such as a turbid appearance or certain flow properties. Such structured liquids may also contain suspended solids. While structured liquids provide more formulation flexibility compared to isotropic liquids, they often suffer from stability and viscosity problems. The presently disclosed formulations, however, overcome these stability and viscosity problems and provide for compositions that have the desired viscosities while at the same time showing good stability.
  • the liquid detergent compositions of the invention are internally structured in that the surfactant system leads to formation of multilayered vesicles.
  • Structured as used herein, therefore means that the compositions are preferably internally structured by formation of multilayered vesicles.
  • Multilayered vesicles preferably relates to essentially spherical vesicles that have a multilayered, typically double-layered, shell formed of molecules comprising hydrophobic moieties, with said hydrophobic moieties arranged such that they face each other while the more hydrophilic parts of the molecules face outwards. Said shell can form a vesicle lumen.
  • the detergent compositions of the invention comprise a surfactant system, wherein said surfactant system comprises at least one alkyl ether sulfate.
  • said surfactant system comprises at least one alkyl ether sulfate.
  • Preferred alkyl ether sulfates are those of formula (I)
  • R represents a linear or branched, substituted or unsubstituted alkyl group, preferably a linear, unsubstituted alkyl group, more preferably a fatty alcohol moiety.
  • Preferred R moieties are selected from the group consisting of decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl moieties and mixtures thereof, wherein those groups with an even number of carbon atoms are preferred.
  • R moieties are derived from C10-C18 fatty alcohols, such as those derived from coconut oil alcohols, tallow fatty alcohols, lauryl, myristyl, cetyl or stearyl alcohol or from Cio-C2o oxoalcohols.
  • AO represents an ethyleneoxide (EO) or propyleneoxide (PO) group, preferably an ethyleneoxide group.
  • the index n represents an integer from 1 to 50, preferably from 1 to 20 and more preferably from 1 to 10. Particularly preferably, n is 1 , 2, 3, 4, 5, 6, 7 or 8.
  • X represents a monovalent cation or the n-th part of an n-valent cation, preferred are alkali metal cations, specifically Na + and K + , most preferably Na + . Further cations X + may be selected from NH 4 + , 1 ⁇ 2 Zn 2+ ,1 ⁇ 2 Mg 2+ ,1 ⁇ 2 Ca 2+ ,1 ⁇ 2 Mn 2+ , and combinations thereof.
  • the detergent compositions comprise an alkyl ether sulfate selected from fatty alcohol ether sulfates of formula (II)
  • Particularly preferred lauryl ether sulfate sodium salt with 2 EO, as it is particularly advantageous for achieving the desired viscosity ranges.
  • the level of ethoxylation is an average value and can, for a specific compound, be an integer or fractional number.
  • the alkyl ether sulfate is contained in the compositions of the invention in an amount of 3.2 to 7.0 wt.% relative to the total weight of the composition, preferably 4.0 to 7.0 wt.%, more preferably 4.5 to 7.0 wt.%, most preferably 5.0 to 6.0 wt.%.
  • the surfactant system further comprises at least one additional anionic surfactant, preferably an alkyl benzene sulfonate.
  • alkyl benzene sulfonates include, but are not limited to linear and branched alkyl benzene sulfonates, preferably linear alkyl benzene sulfonates.
  • Exemplary compounds are those of formula (III)
  • R ' and R " are independently H or alkyl and combined comprise 9 to 19, preferably 9 to 15 and more preferably 9 to 13 carbon atoms. Particularly preferred are dodecyl and tridecyl benzene sulfonates, in particular the sodium salts thereof. Preferred contents range from 6.8 to 19.0 wt.%, preferably 9.0 to 17.0 wt.%, more preferably 10.0 to 15.0 wt.% relative to the total weight of the composition.
  • compositions of the invention may further comprise one or more nonionic surfactants.
  • Preferred nonionic surfactants are those of formula (IV)
  • R 2 represents a linear or branched substituted or unsubstituted alkyl moiety
  • AO represents an ethylene oxide (EO) or propylene oxide (PO) group
  • m is an integer from 1 to 50.
  • R 2 preferably represents a linear or branched, substituted or unsubstited alkyl group, preferably a linear, unsubstituted alkyl group, particularly preferred a fatty alcohol group.
  • R 2 are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl groups and combinations thereof, wherein those groups with an even number of carbon atoms are preferred.
  • Particularly preferred are R 2 groups derived from C12-C18 fatty alcohols, such as coconut oil alcohol, tallow oil alcohol, lauryl, myristyl, cetyl or stearyl alcohol or from C10-C20 oxoalcohols.
  • AO represents an ethyleneoxide (EO) or propyleneoxide (PO) group, preferably an ethyleneoxide group.
  • the index m represents an integer from 1 to 50, preferably from 1 to 20 and more preferably from 1 to 6. Particularly preferably, m is 1 , 2, 3, 4 or 5, most preferably 3-5, as higher degrees of ethoxylation may negatively influence viscosity and stability.
  • the detergent compositions comprise an alkyl ether selected from fatty alcohol ethers of formula (V)
  • C12-18 fatty alcohols with 1-6 EO More preferred are C12-14 alcohols having 1-5 EO, most preferred are C12-14 alkyl ethers with 3-5 EO, in particular lauryl ether with 5 EO.
  • Such nonionic alkyl ethers may be contained in the formulation in amounts of 0.0 to 10 wt.%, preferably 0.5 to 8.0 wt.%, more preferably 2.0 to 6.0 wt.%. It has been found that the addition of such nonionic alkyl ether surfactants positively influences physical stability of the composition at low temperatures, i.e. temperatures around or below 10°C, particularly below 4°C, in that they prevent formation of solid particles or crystals in the liquid composition.
  • the detergents may further include other nonionic surfactants, such as alkyl glucosides of the general formula RO(G)x, where R is a primary linear or 2-methyl-branched aliphatic radical containing 8 to 22 and preferably 12 to 18 carbon atoms and G stands for a glucose unit.
  • R is a primary linear or 2-methyl-branched aliphatic radical containing 8 to 22 and preferably 12 to 18 carbon atoms and G stands for a glucose unit.
  • G stands for a glucose unit.
  • the degree of oligomerization x which indicates the distribution of monoglucosides and
  • oligoglucosides is a number of 1 to 10 and preferably a number of 1.2 to 1 .4. However, in preferred embodiments, the compositions do not include such alkyl glucosides.
  • the surfactant system therefore comprises at least two anionic surfactants, namely the at least one alkyl ether sulfate and preferably at least one alkyl benzene sulfonate, and optionally at least one alkyl ether.
  • compositions may comprise, for example, 10.0 to 25.0, preferably 15.0 to 20.0 wt.% of the surfactant system.
  • Said surfactant system may comprise or consist of anionic surfactants, preferably (1 ) 3.2 to 7.0 wt.%, preferably 4.5 to 7.0 wt.% C10-16 alkyl ether sulfates with 1 to 7 EO, preferably C12-14 fatty alcohol ether sulfates with 1-3 EO, more preferably lauryl ether sulfate with 2 EO, and (2) 6.8 to 19.0, preferably 9.0 to 17.0 wt.%, more preferably 10.0 to 15.0 wt.% of a linear alkyl benzene sulfonate, preferably dodecyl or tridecyl benzene sulfonate, and (3) 0.0 to 10 wt.%, preferably 0.5 to 8.0 wt.%, more preferably 2.0 to 6.0 wt.% C12
  • the compositions of the invention have a conductivity of ⁇ 15mS, preferably ⁇ 1 1 mS, more preferably ⁇ 10 mS.
  • Conductivity can, for example, be measured by using an Oakton CON700 Conductivity meter, preferably standardized using a 12.88 milli-Siemens reference standard. Conductivity measurements can be carried out according to the EN ISO 7888: 1985 standard. It has been found that compositions having a low conductivity are more stable and less prone to a viscosity decrease over extended periods of storage. Accordingly, “stable” or “stability” in the sense of the present invention refers to the property of a detergent composition to substantially maintain its viscosity, i.e. a viscosity decrease of no more than 10%, over extended periods of storage, for example more than 60 days at temperatures of about 20°C. In addition, said term means that the composition remains homogeneous, i.e. without any visible phase separation over the same period.
  • said stability can be achieved without the presence of any stabilizing or rheology modifying (thickening) polymers.
  • said polymers adversely affect stability of the liquid compositions disclosed herein in that such compositions are much more susceptible to loss of viscosity over extended periods of storage.
  • Said polymers include all polymers known and used for said purposes in the art, in particular polyacrylates and polyacrylic acids as well as all homo- and copolymers including monomeric units derived from acrylates and/or acrylic acid.
  • acrylates or "acrylic acid” and derivatives thereof, said terms include “methacrylates” and “methacrylic acid” as well as the various acrylic acid esters known in the art, such as methyl(meth)acrylate, ethyl(meth)acrylate, etc..
  • compositions of the invention further comprise a builder system.
  • the builder system is a phosphate-free builder system, as the composition is free of phosphates.
  • the composition may comprise phosphonates. Accordingly, the term "phosphate-free", as used herein does not refer to phosphonates.
  • the compositions are phosphate- and phosphonate-free.
  • the phosphonates are preferably hydroxyalkane and/or amino alkane phosphonates, such as 1-hydroxyethane-1 , 1-diphosphonate (HEDP), ethylenediamine tetramethylene phosphonate (EDTMP), diethylenetriamine pentamethylene phosphonate (DTPMP), and lysine tetramethylene phosphonate (LTMP).
  • HEDP 1-hydroxyethane-1
  • HEDP 1-diphosphonate
  • ETMP ethylenediamine tetramethylene phosphonate
  • DTPMP diethylenetriamine pentamethylene phosphonate
  • LTMP lysine tetramethylene phosphonate
  • phosphonates are used in amounts of 0.1 to 10.0 wt.%, preferably 0.5 to 8.0 Gew.-%, more preferably 0.1 to 1 .5 wt.%.
  • the total phosphorus content of the detergents is preferably less than 0.5% by weight.
  • Suitable builders include, without limitation, inorganic builders, such as silicates, aluminosilicates (particularly zeolite), and carbonates, as well as organic builders, such as organic di- and polycarboxylic acids, aminocarboxylic acids and combinations thereof.
  • inorganic builders such as silicates, aluminosilicates (particularly zeolite), and carbonates
  • organic builders such as organic di- and polycarboxylic acids, aminocarboxylic acids and combinations thereof.
  • Preferred in the liquid compositions of the invention are carbonates, di- and polycarboxylic acids and aminocarboxylic acids.
  • alkali metal hydroxides in particular sodium hydroxide, but these are, besides their use for pH control, not preferred.
  • Suitable carbonates include alkali metal carbonates, hydrogen carbonates and sesquicarbonates, with alkali metal carbonates, in particular sodium carbonate being preferred.
  • inorganic builders in particular water-soluble inorganic builders, preferably carbonates, are used in amounts of up to 5 wt.% relative to the total weight of the composition.
  • carbonate preferably sodium carbonate
  • carbonate is used in amounts of 1.0 to 5.0 wt.%, preferably 2.0 to 4.0 wt.%. It has been found that amounts higher than 5 wt.% adversely affect the stability of the composition.
  • Suitable organic builders include polycarboxylic acids which can be used as free acids or in form of their salts, including, but not limited to, citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartric acid, maleic acid, fumaric acid, and sugar acids.
  • the free acids can also be used for pH control.
  • Preferred are citric acid, succinic acid, glutaric acid, adipic acid and gluconic acid, and combinations thereof.
  • citric acid and their salts i.e. citrates.
  • the polycarboxylic acids in particular citric acid/citrate, are contained in the compositions of the invention in amounts of 3.5 to 25.0 wt.%, preferably 4.0 to 10.0 wt.%.
  • compositions preferably also include
  • aminocarboxylic acids or salts thereof i.e. aminocarboxylates.
  • the aminocarboxylic acids/aminocarboxylates are selected from the group consisting of L-glutamic acid ⁇ , ⁇ -diacetic acid (GLDA), methyl glycine diacetic acid (MGDA), imino disuccinic acid (IDS), ethylenediamine ⁇ , ⁇ '-disuccinic acid (EDDS), diethylenetriamine pentaacetic acid (DTPA), beta- alanine ⁇ , ⁇ -diacetic acid, hydroxyethylenediamine triacetic acid (HEDTA), and alkali metal salts thereof as well as combinations of any one of more of the afore-mentioned, preferably GLDA tetrasodium salt.
  • GLDA L-glutamic acid ⁇ , ⁇ -diacetic acid
  • MGDA methyl glycine diacetic acid
  • IDS imino disuccinic acid
  • the aminocarboxylates are preferably used in amounts of 0.5 to 5.0 wt.%, preferably 1.0 to 4.0 wt.%.
  • the detergent compositions comprise a builder system comprising relative to the total weight of the composition:
  • compositions include polymeric polycarboxylates, polyacetals, dextrins and others. It is however preferred that the compositions are free of these other types of organic builders. It is particularly preferred that the compositions are free of polymeric organic builders, in particular (meth)acrylate-containing builders.
  • the builder system is comprised in the compositions in an amount of 5.0 to 25.0 wt.%, preferably 10.0 to 15.0 wt.%.
  • the detergent compositions of the invention are aqueous liquid compositions and as such comprise significant quantities of water, typically 50.0 to 85.0 wt.%, preferably 65.0 to 75.0 wt.%.
  • the pH value of the detergents according to the invention is generally in the range of from 7 to 12, preferably in the range from 7 to 10.5. Relatively high pH values, for example above 9, may be adjusted by the use of small quantities of sodium hydroxide or alkaline salts, such as sodium carbonate.
  • the liquid detergents are typically opaque, are flowable, and may be poured under the sole effect of gravity without any need for other shear forces to be applied. Their viscosity is generally greater than 1 ,000 mPas (Brookfield viscosimeter, spindle 3, 12 rpm, 25° C), namely in the range of between 1 ,000 and 10,000 mPas, preferably between 2,000 and 6,000 mPas.
  • the detergents may commonly contain at least one, preferably two or more other substances selected from the group consisting of soaps, pH adjusting agents, perfumes, fluorescing agents (optical brighteners). dyes, colorants, antimicrobial active substances, germicides, fungicides, antioxidants, preservatives, and softening compounds.
  • ingredients include silicone oils, anti-redeposition agents, anti-greying agents, shrinkage preventers, wrinkle protection agents, dye transfer inhibitors, corrosion inhibitors, antistatic agents, bittering agents, ironing adjuvants, proofing and impregnation agents, swelling and anti-slip agents, complexing agents and UV absorbers.
  • bleaching agents may be bleaching agents, bleach activators, bleach catalysts, and enzymes, however, in various embodiments, the compositions are free of those.
  • the detergent compositions further comprise relative to their total weight 0.25 to 15 wt.%, preferably 0.5 to 12.5 wt.%, more preferably 1 .0 to 10.0 wt.%, even more preferably 1 .5 to 7.5 wt.% and most preferably 2.0 to 6.0 wt.% soaps.
  • Preferred are soaps from C12-C18 fatty acids, i.e. the salts of lauric acid, myristic acid, palmitic acid, stearic acid, or mixtures derived from natural fatty acids, for example coconut, palm kernel, olive oil, or tallow fatty acids.
  • ingredients that are commonly used include colorants, perfumes and optical brighteners, as well as pH adjusting agents. All of these ingredients are well-known in the art and readily available.
  • the present invention further relates to methods for cleaning textiles, wherein a washing liquor containing the liquid detergent composition of the present invention contacts the textile in at least one method step.
  • the methods are preferably carried out in an automatic washing machine.
  • Methods for cleaning of textiles are generally characterized by the fact that in several different process steps various cleaning-active substances are applied to the textiles and after the contact time said cleaning-active substances are washed off, or that the textiles are treated in any other way with a detergent or a solution of said substance.
  • a polarizing light microscope and conductivity meter were used. Microscopy was carried out using a Nikon Eclipse Ci-L optical microscope with polarizing light filter. A sample was placed on a glass slide and spread to a thin layer and observed under 40X magnification.
  • Minitab® statistical software was used to design a set of experiments to identify the optimum formula in terms of stability and viscosity.
  • a series of laboratory batches were prepared with varying levels of sodium carbonate, SLES and a polymeric thickener (Acusol® 81 OA). The results of this study were:
  • formula 13-397 was found to be stable. Based on the success further laboratory batches were prepared with a variety of fragrances as well as an unfragranced variant. All showed excellent stability. Manufacture of 13-397 was scaled up to 200kg. Data comparing conductivity and viscosity changes over time are presented in Figures 1 and 2. Formulations 13-154C and 13-154H were the most stable formulations found that contain polymeric builders and stabilizers (Acusol® 420N and Alcosperse® 325) as well as polxmeric thickeners (Acusol® 81 OA) to increase viscosity. Formula 13-397 does not contain said polymers and is as described in Table 2. The data shows that formula 13-397 has a stable conductivity and viscosity over time, while reference formulations with polymer increase in conductivity and decrease in viscosity.
  • a further enhancement was to include a nonionic surfactant to improve stability with respect to phase separation and solid particle agglomeration, particularly with respect to the optical brightener at low temperatures ( ⁇ 4°C).
  • a nonionic surfactant to improve stability with respect to phase separation and solid particle agglomeration, particularly with respect to the optical brightener at low temperatures ( ⁇ 4°C).

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  • Detergent Compositions (AREA)

Abstract

La présente invention concerne une composition de détergent liquide structurée aqueuse et sans phosphate, en particulier un détergent industriel liquide (HDL) qui comprend un système tensioactif comprenant un sulfate d'éther d'alkyle, un système d'adjuvant et de l'eau, la composition détergente possédant une viscosité comprise entre 1 000 et 10 000 mPas et étant exempte de polymères contenant de l'acrylate stabilisateurs et modificateurs de rhéologie. L'invention concerne en outre des procédés de lavage de textiles au moyen des détergents de l'invention.
PCT/EP2016/081045 2015-12-18 2016-12-14 Composition de détergent liquide structurée WO2017102866A1 (fr)

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IT201900000502A1 (it) * 2019-01-11 2020-07-11 Deco Ind S Coop P A Composizione anticalcare per lavatrice
US11248192B2 (en) 2019-01-22 2022-02-15 Ecolab Usa Inc. Polymer blend to stabilize highly alkaline laundry detergent
CN116583584A (zh) * 2020-12-07 2023-08-11 联合利华知识产权控股有限公司 洗涤剂组合物

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WO2022122480A1 (fr) * 2020-12-07 2022-06-16 Unilever Ip Holdings B.V. Compositions détergentes
DE102022113400A1 (de) 2022-05-27 2023-11-30 Henkel Ag & Co. Kgaa Fließfähige Wasch- und Reinigungsmittel mit verbesserten Eigenschaften
DE102022113403A1 (de) 2022-05-27 2023-11-30 Henkel Ag & Co. Kgaa Fließfähige Wasch- und Reinigungsmittel mit verbesserten Eigenschaften II

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EP0530708A2 (fr) * 1991-08-30 1993-03-10 ALBRIGHT & WILSON UK LIMITED Détergent liquide pour le linge
EP2770044A1 (fr) * 2013-02-20 2014-08-27 Unilever PLC Gel lamellaire avec un oxyde d'amine
US20150218488A1 (en) * 2012-11-28 2015-08-06 Ecolab Usa Inc. Viscoelastic surfactant based cleaning compositions

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EP0530708A2 (fr) * 1991-08-30 1993-03-10 ALBRIGHT & WILSON UK LIMITED Détergent liquide pour le linge
US20150218488A1 (en) * 2012-11-28 2015-08-06 Ecolab Usa Inc. Viscoelastic surfactant based cleaning compositions
EP2770044A1 (fr) * 2013-02-20 2014-08-27 Unilever PLC Gel lamellaire avec un oxyde d'amine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900000502A1 (it) * 2019-01-11 2020-07-11 Deco Ind S Coop P A Composizione anticalcare per lavatrice
US11248192B2 (en) 2019-01-22 2022-02-15 Ecolab Usa Inc. Polymer blend to stabilize highly alkaline laundry detergent
US11773349B2 (en) 2019-01-22 2023-10-03 Ecolab Usa Inc. Polymer blend to stabilize highly alkaline laundry detergent
CN116583584A (zh) * 2020-12-07 2023-08-11 联合利华知识产权控股有限公司 洗涤剂组合物

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AU2016372350A1 (en) 2018-05-24
EP3390599A1 (fr) 2018-10-24
EP3390599B1 (fr) 2020-02-26

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