WO2016034633A1

WO2016034633A1 - Liquid detergent composition with pearly luster

Info

Publication number: WO2016034633A1
Application number: PCT/EP2015/070065
Authority: WO
Inventors: Enci RASTEGAR; Mahboobeh MOHAMMADI; Hesham EISSA; Nahla ELGHANDOUR
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2014-09-03
Filing date: 2015-09-02
Publication date: 2016-03-10

Abstract

The present invention relates to a liquid detergent composition comprising a special mixture of an anionic detergent and a mono(C₁₀-C₂₄)alkylester of a (C₂-C₃)alkylenediol. The present invention also describes a method of using such a liquid composition to clean hard surfaces or soft surfaces.

Description

..Liquid detergent composition with pearly luster"

The present invention relates to an aqueous liquid detergent composition comprising a special mixture of an anionic detergent, fatty acid and a mono(Cio-C24)alkylester of a (C2-C3)alkylenediol. The present invention also describes a method of using such a liquid composition to clean hard surfaces or soft surfaces.

There are now a number of constraints on the formulation of detergent compositions. These include the intended use, which influences product form, and legal restrictions and also the processing route taken. Further considerations relate to the main use of the detergent composition, i.e. if the composition will be used in hand-washing, in twin-tub or in automatic (front or top loading) washing machines.

A favourable cleaning agent should have benefits in the cleaning power, outer appearance and costs. Furthermore, a cleaning agent must be stable during storage.

It is known, that pearly luster of a liquid detergent composition can be achieved by using inorganic pigments like mica. Said inorganic pigments are costly and difficult to disperse in liquid detergent compositions. Usually polymeric thickening agents have to be added to the liquid detergent compositions in order to prevent sedimentation of said inorganic pigments.

It is an object of the present invention to provide a liquid composition for cleaning hard or soft surfaces that is stable during storage. Said compositions have a (preferably golden) luster and a superior cleaning power on textiles.

This object is achieved by a liquid detergent composition comprising

at least one anionic surfactant of formula (I)

R -0-(A-0)_n-S0₃ ^" X⁺ wherein

R means a linear or branched, substituted or unsubstituted (C8-C20)-alkyl group, an aryl group or an (Cs-C2o)-alkylaryl group, preferably a linear, unsubstituted (Cs-C2o)-alkyl group, A means ethane-1 ,2-diyl- or propane-1 ,2-diyl, preferably ethane-1-2-diyl,

n means an integer from 1 to 50, preferably from 1 to 20, especially from 2 to 10, most preferably for 2, 3, 4, 5, 6, 7 or 8, X⁺ means a monovalent cation or an equivalent of a polyvalent cation,

0.005 to 2,0 wt.%, preferred 0.05 to 1 ,0 wt.%, particularly preferred 0,1 to 0,5 wt.%, fatty acid compound selected from fatty acid, fatty acid salt or mixtures thereof, and

at least one compound of formula (III)

wherein

R² means a linear or branched (C9-C23)-alkyl group, preferably a linear (C9-Ci9)-alkyl group, G means ethane-1 ,2-diyl, propane-1 ,2-diyl or propane-1 ,3-diyl, preferably ethane-1 ,2-diyl, water.

According to formula (I) R denotes preferably a group selected from decyl-, undecyl-, dodecyl-, tridecyl-, tetradecyl, pentadecyl-, hexadecyl-, heptadecyl-, octadecyl-, nonadecyl-, eicosyl group or mixtures thereof, whereas the before mentioned groups having an even number of carbon atoms are particularly preferred. Most preferred residues R are derived from Ci2-Ci8-fatty alcohols. Examples are Coco fatty alcohol, tallow fatty alcohol, lauryl-, myristyl-, cetyl- oder stearyl alcohol or from C10-C20- Oxoalcohols.

X⁺ of formula (I) is preferably selected from alkali metal ions, especially Na⁺ or K⁺, whereas Na⁺ is most preferred. Other cations X⁺ may be selected from NHV, ½ Zn²⁺,½ Mg²⁺,½ Ca²⁺,½ Mn²⁺, or mixtures thereof.

Preferred liquid compositions of this invention comprise an anionic surfactant of formula I, selected from at least one anionic surfactant of formula (1-1 )

wherein k means an integer of 1 1 to 19, preferably 2, 3, 4, 5, 6, 7 or 8.

Particularly preferred liquid compositions comprise an anionic surfactant of formula (I) chosen from sodium-Ci2-i4 fatty alcohol ether sulfate with two units of ethylene oxide (according to formula (1-1 ) k means an integer of 11 to 13 and n is 2). Preferred the liquid compositions according to this invention comprise said portion of anionic surfactant of formula (I) in an amount of 0,05 to 7,0 wt.%, preferably of 2,0 to 5,0 wt.%. All amounts given in percent by weight (wt.%) are based on the total weight of the respective composition unless otherwise noted.

The liquid composition of this invention comprises 0.005 to 2,0 wt.%, preferred 0.05 to 1 ,0 wt.%, particularly preferred 0,1 to 0,5 wt.%, fatty acid compound selected from fatty acid, fatty acid salt or mixtures thereof. According to this invention a fatty acid is a monocarboxylic acid comprising 10 to 20 carbon atoms. Preferred fatty acids are selected from Coco fatty acid, tallow fatty acid, lauric acid, myristic acid, palmitic acid, oleic acid, stearic acid or mixtures thereof.

The fatty acid compound is preferably selected from fatty acid salts. The sodium, potassium, or ammonium salts as well as soluble salts of organic bases such as mono-, di-, or triethanolamine are appropriate. The fatty acid compounds are particularly preferably present in the form of sodium or potassium salts of fatty acids; in particular in the form of the sodium salts of fatty acids.

In a preferred embodiment of this invention, the liquid composition comprises additionally at least one alkylbenzene sulfonate as an anionic surfactant. The alkylbenzene sulphonate is preferably a linear alkylbenzene sulphonate having an alkyl chain length of Cs-C-is. In particular, the linear alkylbenzene sulphonate is a C9-C13 alkyl benzene sulphonate, a C10-C13 alkyl benzene sulphonate or a C10-C15 alkyl benzene sulphonate. The amount of linear alkylbenzene sulphonate is preferably from 0 to 20 % by weight of said washing liquid composition, more preferably from 15 to 20 % by weight of said composition.

The alkylbenzene sulphonate can be present in the form of the sodium, potassium, or ammonium salts and as soluble salts of organic bases such as mono-, di-, or triethanolamine. The alkylbenzene sulphonate are preferably present in the form of their sodium or potassium salts; in particular in the form of the sodium salts.

It is particularly preferred, if the liquid detergent composition additionally comprises at least one anionic surfactant of formula (II)

wherein the combination of R^' and R^" comprises 9 to 19, preferably 11 to 15 carbon atoms, Y⁺ means a monovalent cation or an equivalent of a polyvalent cation.

It is most preferred when the liquid detergent composition comprises as the anionic surfactant of formula II) an anionic surfactant of formula (11-1 )

If the liquid composition comprises at least one anionic surfactant according to formula (II) it is preferred, if the liquid composition comprises said portion of anionic surfactant of formula (II) in an amount of 0 to 20 wt.%, preferably 1 ,0 to 10,0 wt.%.

It was found to be preferably beneficial, if the liquid detergent composition comprises as at least one compound of formula (III) wherein R² means a linear or branched (C9-C23)-alkyl group, preferably a linear (Ci i-Ci9)-alkyl group and G means ethane-1 ,2-diyl. It is particularly preferred, if the liquid composition comprises as compound of formula (III) a compound selected from ethylene glycol monostearate (R² = Ci7-alkylgroup, G = ethane-1 ,2-diyl), ethylene glycol monohexadecanoate (R² = Ci5-alkylgroup, G = ethane-1 ,2-diyl), ethylene glycol monotetradecanoate (R² = Ci3-alkylgroup, G = ethane-1 ,2-diyl) , ethylene glycol monododecanoate (R² = Cn-alkylgroup, G = ethane-1 ,2-diyl) or mixtures thereof. The use of ethylene glycol monostearate (R² = Ci7-alkylgroup, G = ethane-1 ,2-diyl) in said liquid compositions is most preferred.

The liquid detergent compositions comprise said portion of compound of formula (III) in an amount of 0,005 to 0,5 wt.%, preferably of 0,05 to 0,2 wt.%.

In a preferred embodiment the liquid detergent composition comprises additionally at least one (Cio- C2o)-fatty alcohol, preferably (Ci2-Cis)-fatty alcohol. Preferred fatty alcohols are selected from Coco fatty alcohol, tallow fatty alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, oleyl alcohol, stearyl alcohol or mixtures thereof.

(Cio-C2o)-fatty alcohol is preferably comprised in the liquid detergent composition in an amount of 0.1 to 2.0 wt.%, particularly preferred from 0,5 to 1 ,8 wt.%.

The following embodiments (A) to (F) are examples of preferred embodiments of this invention: (A) Liquid detergent composition comprising 0,05 to 7,0 wt.%, preferably of 2,0 to 5,0 wt.%, of at least one anionic surfactant of formula (I)

R -0-(A-0)_n-S0₃ ^" X⁺ wherein

R means a linear or branched, substituted or unsubstituted (Cs-C2o)-alkyl group, an aryl group or an (C8-C2o)-alkylaryl group, preferably a linear, unsubstituted (Cs-C2o)-alkyl group,

A means ethane-1 ,2-diyl- or propane-1 ,2-diyl, preferably ethane-1-2-diyl,

n means an integer from 1 to 50, preferably from 1 to 20, especially from 2 to 10, most preferably for 2, 3, 4, 5, 6, 7 or 8,

X⁺ means a monovalent cation or an equivalent of a polyvalent cation,

0.005 to 2,0 wt.%, preferred 0.05 to 1 ,0 wt.%, particularly preferred 0,1 to 0,5 wt.%, fatty acid compound selected from fatty acid, fatty acid salt or mixtures thereof,

0,01 to 0,5 wt.%, preferably of 0,1 to 0,4 wt.%, of at least one compound of formula (III),

wherein

R² means a linear or branched (C9-C23)-alkyl group, preferably a linear (C9-Ci9)-alkyl group, G means ethane-1 ,2-diyl, propane-1 ,2-diyl or propane-1 ,3-diyl, preferably ethane-1 ,2-diyl, 0 to 20 wt.%, preferred 15,0 to 20,0 wt.%, of at least one anionic surfactant of formula (II)

wherein the combination of R^' and R^" comprises 9 to 19, preferably 1 1 to 15 carbon atoms,

Y⁺ means a monovalent cation or an equivalent of a polyvalent cation.

water.

(B) Liquid detergent composition comprising

0,05 to 7,0 wt.%, preferably of 2,0 to 5,0 wt.%, of at least one anionic surfactant of formula (I- 1 )

wherein k means an integer of 1 1 to 19, preferably 2, 3, 4, 5, 6, 7 or 8,

wherein

R² means a linear or branched (C9-C23)-alkyl group, preferably a linear (C9-Ci9)-alkyl group, G means ethane-1 ,2-diyl, propane-1 ,2-diyl or propane-1 ,3-diyl, preferably ethane-1 ,2-diyl, 0 to 20 wt.%, preferred 1 ,0 to 10,0 wt.%, of at least one anionic surfactant of formula (II)

Y⁺ means a monovalent cation or an equivalent of a polyvalent cation.

water.

(C) Liquid detergent composition comprising

0,05 to 7,0 wt.%, preferably of 2,0 to 5,0 wt.%, of at least one anionic surfactant of formula (I)

R -0-(A-0)_n-S0₃ ^" X⁺ wherein

X⁺ means a monovalent cation or an equivalent of a polyvalent cation, 0.005 to 2,0 wt.%, preferred 0.05 to 1 ,0 wt.%, particularly preferred 0,1 to 0,5 wt.%, fatty acid compound selected from fatty acid, fatty acid salt or mixtures thereof,

O

^R O O-H _{(| ||)}

wherein

R² means linear (C9-Ci9)-alkyl group,

G means ethane-1 ,2-diyl,

0 to 20 wt.% preferred 1 ,0 to 10,0 wt.%, of at least one anionic surfactant of formula (II)

Y⁺ means a monovalent cation or an equivalent of a polyvalent cation.

water.

(D) Liquid detergent composition comprising

wherein k means an integer of 1 1 to 19, preferably 2, 3, 4, 5, 6, 7 or 8,

wherein

R² means linear (C9-Ci9)-alkyl group,

G means ethane-1 ,2-diyl, 0 to 20 wt.%, preferred 1 ,0 to 10,0 wt.%, of at least one anionic surfactant of formula (II)

Y⁺ means a monovalent cation or an equivalent of a polyvalent cation.

water.

(E) Liquid detergent composition comprising

R -0-(A-0)_n-S0₃ ^" X⁺ wherein

R means a linear or branched, substituted or unsubstituted (C8-C20)-alkyl group, an aryl group or an (C8-C2o)-alkylaryl group, preferably a linear, unsubstituted (Cs-C2o)-alkyl group, A means ethane-1 ,2-diyl- or propane-1 ,2-diyl, preferably ethane-1-2-diyl,

X⁺ means a monovalent cation or an equivalent of a polyvalent cation,

0,01 to 0,5 wt.%, preferably of 0,1 to 0,4 wt.%, of at least one compound selected from ethylene glycol monostearate, ethylene glycol monohexadecanoate, ethylene glycol monotetradecanoate, ethylene glycol monododecanoate or mixtures thereof,

0 to 20 wt.%, preferred 1 ,0 to 10,0 wt.%, of at least one anionic surfactant of formula (II)

wherein the combination of R^' and R^" comprises 9 to 19, preferably 1 1 to 15 carbon atoms, Y⁺ means a monovalent cation or an equivalent of a polyvalent cation.

water.

(F) Liquid detergent composition comprising 0,05 to 7,0 wt.%, preferably of 2,0 to 5,0 wt.%, of at least one anionic surfactant of formula (I- 1 )

wherein k means an integer of 1 1 to 19, preferably 2, 3, 4, 5, 6, 7 or 8,

to 10,0 wt.%, of at least one anionic surfactant of formula (II)

Y⁺ means a monovalent cation or an equivalent of a polyvalent cation.

water.

According to the preferred examples (A) to (F) it is preferred to select ethylene glycol monostearate as the most preferred compound of formula (III).

According to the preferred examples (A) to (F) it is preferred to add additionally at least one (C10-C20)- fatty alcohol. The above mentioned fatty alcohols and the preferred amounts are again preferred embodiments of the examples (A) to (F).

It was found, that the use of the compound of formula (III) in said liquid composition delivers a pearly luster also without use of inorganic pearlescent pigments. For this reason it is preferred, if the liquid composition comprises at most 0.001 wt.% of an inorganic pearlescent agent. It is particularly preferred, if the liquid composition of the invention is free of inorganic pearlescent pigments.

In a further embodiment it may also be preferred that the liquid detergent composition additionally comprises a nonionic detergent active compound. The presence of a nonionic detergent active compound improves the cleaning power of the fabric washing liquid composition and helps to stably and homogenously disperse the perfume in the liquid detergent composition. The nonionic active detergent species that can be used are by preference alkoxylated , advantageously ethoxylated, in particular primary alcohols having by preference 8 to 18 carbon atoms and an average of 1 to 12 mol ethylene oxide (EO) per mol of alcohol, in which the alcohol residue can be linear or preferably methyl-branched in the 2-position, or can contain mixed linear and methyl-branched residues, such as those that are usually present in oxo alcohol residues. Particularly preferred, however, are alcohol ethoxylates having linear residues made up of alcohols of natural origin having 12 to 18 carbon atoms, e.g. from coconut, palm, tallow, or oleyl alcohol, and an average of 2 to 8 EO per mol of alcohol. The preferred ethoxylated alcohols include, for example, C12-14 alcohols with 3 EO, 4 EO, 5 EO, or 7 EO, C9-11 alcohols with 7 EO, C13-15 alcohols with 3 EO, 5 EO, 7 EO, or 8 EO, C12-18 alcohols with 3 EO, 5 EO, or 7 EO, and mixtures thereof, such as mixtures of C12-14 alcohol with 3 EO and C12-18 alcohol with 7 EO. The degrees of ethoxylation indicated represent statistical averages, which can correspond to an integral or a fractional number for a specific product. Preferred alcohol ethoxylates exhibit a restricted distribution of homologs (narrow range ethoxylates, NRE). In addition to these nonionic active detergent species, fatty alcohols with more than 12 EO can also be used. Examples of these are tallow fatty alcohol with 14 EO, 25 EO, 30 EO, or 40 EO. Nonionic active detergent species that contain EO and PO groups together in the molecule are also usable according to the present invention. Block copolymers having EO-PO block units or PO-EO block units, but also EO-PO-EO copolymers or PO-EO-PO copolymers, can be used in this context. Also usable, of course, are mixed alkoxylated nonionic active detergent species in which EO and PO units are distributed statistically rather than in block fashion. Such products are obtainable by the simultaneous action of ethylene oxide and propylene oxide on fatty alcohols. These nonionic active detergent species are obtainable, for example, under the commercial name Dehydol^® (from Cognis).

Also suitable nonionic active detergent species are mixtures of a (more) branched ethoxylated fatty alcohol and a non-branched ethoxylated fatty alcohol, such as mixtures of C16-18 fatty alcohol having 7 EO and 2-propylheptanol having 7 EO.

Most preferred the fabric washing liquid composition comprises a C12-18 fatty alcohol having 7 EO or a C13-15 oxo alcohol having 7 EO as nonionic surfactant.

In yet a further embodiment it may also be preferred that the liquid detergent composition additionally comprises an amphoteric detergent active compound, preferably a (C8-C2o)alkylamido-(C2-C3)-alkyl betaine. The presence of an amphoteric detergent active compound, especially of a betaine improves the cleaning power of the cleaning liquid composition and enhances the foam level of the fabric washing liquid composition.

The liquid detergent composition may also additionally comprise an amphoteric active detergent compound at a preferred level up to 15 wt.% of the fabric washing liquid composition. The amphoteric active detergent compound is particularly preferably present in the fabric washing liquid composition in an amount of from 0 to 3,0 wt.%.

In a preferred embodiment, the amphoteric active detergent compound is a betaine. A betaine is any neutral chemical compound with a positively charged cationic functional group such as a quaternary ammonium or phosphonium cation (generally: onium ions) which bears no hydrogen atom and with a negatively charged functional group such as a carboxylate group which may not be adjacent to the cationic site.

Suitable betaines comprise compounds represented by the following formula

R³-CONH-(CH₂)o-N⁺(CH3)2-CH₂COO- (IV),

wherein

R³ is a linear or branched, substituted or unsubstituted alkyl-, aryl- or alkylarylgroup, and o is an integer of from 1 to 4, preferably 3.

Preferred surfactants represented by formula (IV) are those wherein

R³ is a linear or branched, substituted or unsubstituted Cs-C-is-alkylgroup, preferably an alkylgroup which is derived from coconut oil, and

o is 3.

A preferred betaine for use in the fabric washing liquid composition is cocamidopropyl betaine (CAPB), an organic compound derived from coconut oil and dimethylaminopropylamine.

In another preferred embodiment, the liquid composition additionally comprises at least one dye. Particularly preferred dyes are selected from at least one dye with at least one sulfonic acid group or their salts.

It is preferred, if the liquid composition of the invention comprises at least one dye selected from azo dyes with at least one sulfonic acid group or their salts. Particularly preferred the liquid composition of the invention comprises at least one dye selected from azo dyes with

i) at least one sulfonic acid group and ii) at least one naphthalen-moiety

or their salts Most preferred is the dye 6-hydroxy-5-[2-(4-sulfophenyl)diazenyl]-2-naphthalenesulfonic acid or its salt (especially its disodium salt), which is also known as C.I. Food Yellow 3.

It is preferred, if the liquid composition of the invention comprises (preferably in addition to above mentined dyes) at least one dye selected from methylene dyes having

i) at least one sulfonic acid group and

ii) at least one tertiary or quaternary nitrogen atom

or their salts. Particularly preferred is the dye N-ethyl-N-[4-[[4-[ethyl[3- sulphophenyl)methyl]amino]phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo- benzenemethanaminium inner salt (especially its diammonium salt), which is also known as C.I. Acid Blue 9; N-ethyl-N-[4-[[4-[ethyl[3-sulphophenyl)methyl]amino]phenyl](4-hydroxy-2- sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo-benzenemethanaminium inner salt (especially its aluminium salt), which is also known as D&C Green No.3; N-ethyl-N-[4-[[4-[ethyl[3- sulphophenyl)methyl]amino]phenyl](4-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo- benzenemethanaminium inner salt (especially its calcium salt), which is also known as D&C Green No.4; or mixtures thereof.

It is preferred, if the liquid composition of the invention comprises (preferably in addition to above mentined dyes) at least one dye selected from anthrachinone dyes having

i) at least one sulfonic acid group and

ii) at least one secondary, tertiary or quaternary nitrogen atom

or their salts. Particularly preferred is the dye 2,2'-[(9,10-dihydro-9,10-dioxo-1 ,4- anthracenediyl)diimino]bis[5-methyl benzene sulfonic acid or its salt (especially its sodium salt), which is also known as C.I. Acid Green 25.

Especially the preferred liquid compositions of examples (A) to (F) (vide supra) are particularly preferred compositions for said special embodiment.

It is particularly preferred, if the liquid composition of the invention comprises a combination of dyes of a) at least one dye-compound selected from methylene dyes comprising

i) at least one sulfonic acid group and

ii) at least one tertiary or quaternary nitrogen atom

or their salts, and

b) at least one dye-compound selected from azo dyes comprising

i) at least one sulfonic acid group, ii) at least one naphthalene-moiety

or their salts.

Again - especially the preferred liquid compositions of examples (A) to (F) (vide supra) are particularly preferred compositions for said special embodiment.

The liquid composition also preferably contains a detergency builder mixture of citric acid and phosphonic acid. The use of citric acid or salts thereof is advantageous since they are water-soluble organic detergency builders. The citric acid or its salt is preferably present in the fabric washing liquid composition in an amount of from 0.5 to 2 % by weight.

Phosphonic acids and their phosphonate salts are strong chelating agents. Suitable phosphonates to be used herein may include alkali metal ethane 1 -hydroxy diphosphonates (HEDP), alkylene poly (alkylene phosphonate), as well as amino phosphonate compounds, including amino aminotri(methylene phosphonic acid) (ATMP), nitrilo trimethylene phosphonates (NTP), ethylene diamine tetra methylene phosphonates, and diethylene triamine penta methylene phosphonates (DTPMP). The phosphonate compounds may be present either in their acid form or as salts of different cations on some or all of their acid functionalities. Preferred phosphonates to be used herein are diethylene triamine penta methylene phosphonate (DTPMP) and ethane 1 -hydroxy diphosphonate (HEDP). Such phosphonate chelating agents are commercially available from Monsanto under the trade name DEQUEST®. The phosphonic acid or its salt is preferably present in the fabric washing liquid composition in an amount of from 0.3 to 0.8 % by weight.

In a preferred embodiment, the liquid composition additionally comprises a perfume. Non-limiting examples of suitable perfumes include blooming perfumes, perfume oils, and perfume raw materials comprising alcohols, ketones, aldehydes, esters, ethers, nitriles alkenes, and mixtures thereof.

In another preferred embodiment, the liquid composition comprises an encapsulated perfume and a free perfume.

Preferably, the liquid composition is an aqueous fabric washing liquid composition.

In addition to said anionic detergent active compound and said compound of formula (III) (vide supra) a liquid composition may contain further ingredients that further improve the applications-engineering or aesthetic properties of the liquid composition. In the context of the present invention, the liquid composition by preference additionally contains one or more substances from the group of bleaching agents, bleach activators, bleach catalysts, enzymes, non-aqueous solvents, pH adjusting agents, thickeners, fluorescing agents, dyes, hydrotopes, silicone oils, anti-redeposition agents, anti-gray agents, shrinkage preventers, wrinkle protection agents, dye transfer inhibitors, antimicrobial active substances, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing adjuvants, proofing and impregnation agents, swelling and anti-slip agents, softening compounds and UV absorbers.

The liquid composition is manufactured using usual and known methods and processes. For example, the constituents of the liquid composition can be simply mixed in agitator vessels, the water, non-aqueous solvent, and active detergent compounds usefully being prepared first. After cooling under stirring the further constituents are then added in portions. It is a preferred method to prepare a first premix by combining the anionic surfactant of Formula (I) (vide supra) and the compound of formula (III) (vide supra) and mixing both components under heat and prepare a second premix of all other ingredients and add the first premix to the second premix. All mixing can occur in a vessel or in a continuous flow static mixing device.

The composition according to the present invention can be used to clean textiles.

It is preferred to use the liquid composition of this invention in a laundry wash process.

Another object of this invention is a method for cleaning textiles, wherein at least one textile is cleaned in a liquid cleaning medium comprising a liquid composition of this invention (vide supra).

Said liquid medium is prepared by using the liquid composition according to this invention. It is preferred , that the liquid medium has a temperature from 10°C to 30°C.

E x a m p l e s

Table 1 below shows the composition of a liquid detergent composition according to the present invention. Quantities are indicated in wt% of active matter.

Table 1 :

The composition E1 had a pearly golden luster and was stable during storage for 6 weeks at 40°C. The cleaning power of E1 was determined in standardized a laundry process on textiles and was rated by test persons as strong.

Claims

1. A liquid detergent composition comprising

at least one anionic surfactant of formula (I)

R -0-(A-0)_n-S0₃- X⁺ (I) wherein

R means a linear or branched, substituted or unsubstituted (C8-C2o)-alkyl group, an aryl group or an (C8-C2o)-alkylaryl group, preferably a linear, unsubstituted (C8-C20)- alkyl group,

A means ethane-1 ,2-diyl- or propane-1 ,2-diyl, preferably ethane-1 -2-diyl, n means an integer from 1 to 50, preferably from 1 to 20, especially from 2 to 10, most preferably for 2, 3, 4, 5, 6, 7 or 8,

X⁺ means a monovalent cation or an equivalent of a polyvalent cation,

0.005 to 2,0 wt.%, preferred 0.05 to 1 ,0 wt.%, particularly preferred 0,1 to 0,5 wt.%, fatty acid compound selected from fatty acid, fatty acid salt or mixtures thereof, at least one compound of formula (III)

wherein

R² means a linear or branched (C9-C23)-alkyl group, preferably a linear (C9-Ci9)-alkyl group,

G means ethane-1 ,2-diyl, propane- 1 ,2-diyl or propane-1 ,3-diyl, preferably ethane-1 ,2- diyl,

water.

2. The liquid composition according to claim 1 , wherein the anionic surfactant of formula I is selected from at least one anionic surfactant of formula (1-1 )

wherein k means an integer of 1 1 to 19, preferably 2,

3,

4, 5, 6, 7 or 8. The liquid composition according to claims 1 or 2, wherein the anionic surfactant of formula (I) is chosen from sodium-Ci2-i4 fatty alcohol ether sulfate with two units of ethylene oxide.

The liquid composition according to any of the preceding claims, wherein said composition com rises additionally at least one anionic surfactant of formula (II)

5. The liquid composition according to claim 4, wherein the anionic surfactant of formula (II) com rises an anionic surfactant of formula (11-1 )

The liquid composition according to any of the claims 4 or 5, comprising said portion of anionic surfactant of formula (II) in an amount of 0 to 20 wt.%, preferably 1 ,0 to 10,0 wt.%.

The liquid composition according to any of the claims 4 or 5, comprising said portion of anionic surfactant of formula (I) in an amount of 0,05 to 7,0 wt.%, preferably of 2,0 to 5,0 wt.% .

The liquid composition according to any of the preceding claims, comprising said portion of compound of formula (III) in an amount of 0,005 to 0,5 wt.%, preferably of 0,05 to 0,2 wt.%.

The liquid composition according to any of the preceding claims, wherein the composition additionally comprises an amphoteric surfactant, preferably a (C8-C2o)alkylamido-(C2-C3)-alkyl betaine.

The liquid composition according to any of the preceding claims comprising at most 0.001 wt.% of an inorganic pearlescent agent.

Use of a liquid composition as defined in any of the claims 1 to 10 for cleaning textiles.

12. Use according to claim 1 1 , wherein textiles are cleaned in a laundry wash process.

13. Method for cleaning textiles, wherein at least one textile is cleaned in a liquid cleaning medium comprising a liquid composition of any of the claims 1 to 10.