WO2016177483A1

WO2016177483A1 - Method to prevent discoloration of colored textiles

Info

Publication number: WO2016177483A1
Application number: PCT/EP2016/052274
Authority: WO
Inventors: Sivadasan EDATHUTE; Hesham EISSA; Shaimaa ALWAKEL; Nahla ELGHANDOUR; Marouane ANTIR; Sayed FARAHAT
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2015-05-07
Filing date: 2016-02-03
Publication date: 2016-11-10

Abstract

The present invention relates to a method of reducing destruction of colorant dye on a textile which method comprises adding at least one cationic silicone UV-absorber to an aqueous liquid laundry detergent composition.

Description

..Method to prevent discoloration of colored textiles"

The present application relates to a way for protecting dyed textiles from discoloration due to sunlight exposure.

The exposure of textiles to sunlight can lead to destruction of colorant by UV light. By UV light is meant light having wavelength of about 250 to about 460 nanometers (nm). Specifically, UVA generally is in range above 320-400 nm, UVB about 290 to 320 nm and UVC below 290 nm, down to about 250 nm.

WO 00/36074 A1 discloses a translucent or transparent aqueous heavy duty liquid in a clear bottle comprising colorant dye and fluorescent dye and/or UV absorber to protect said colorant dye.

The use of this known UV absorbers or fluorescent dyes leads not in any event to an effective UV protection against the fading of dyed textiles.

It was found that the UV-stability of the color of dyed textiles is improved by adding at least one cationic silicone UV-absorber to a liquid laundry composition. This effect is realized on textiles made of synthetic fibers like polyester or polyamide and on textiles made of natural fibers like wool.

Accordingly, it is an object of the present invention to provide an effective way for protecting the color of textiles against fading induced by sunlight. This UV-protection effect should already be achieved by a through the wash procedure. A UV-protection through the wash procedure means, that during the cleaning step of the washing process, the UV-protection is already achieved, even without the additional use of an additive in the rinsing step.

This object is achieved by a liquid laundry composition comprising

i) water,

ii) a total amount of 5 to 90 wt.% of surfactant,

iii) at least one cationic silicone UV-absorber.

Matter (e.g. a compound or a composition) is defined as a liquid, if it is in the liquid state at 20°C, 1013 mbar.

Matter (e.g. a compound or a composition) is defined as a solid, if it is in the solid state at 20°C, 1013 mbar. In a preferred embodiment, the liquid laundry composition comprises at least one anionic surfactant of formula (I)

R¹-0-(A-0)_n-S0₃ ^" X⁺ (I) 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,

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.

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 laundry 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 laundry compositions according to this invention comprise said portion of anionic surfactant of formula (I) in an amount of 0,05 to 10,0 wt.%, preferably of 2,0 to 8,0 wt.%. All amounts given in percent by weight (wt.%) are based on the total weight of the respective composition unless otherwise noted.

In a preferred embodiment of this invention, the liquid laundry 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 10 wt.%, of said liquid laundry composition, more preferably from 0,5 to 5,0 wt.%. 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 laundry 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 laundry composition comprises as the anionic surfactant of formula (II) an anionic surfactant of formula (11-1 )

(11-1 ) If the liquid laundry 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 10 wt.%, preferably 0,5 to 5,0 wt.%.

In a further embodiment it may also be preferred that the composition additionally comprises a nonionic detergent active compound. The presence of a nonionic detergent active compound improves the cleaning power of the liquid laundry composition by keeping up the UV-protection effect on the textile.

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 liquid laundry composition comprises a C12-18 fatty alcohol having 7 EO or a C13-15 oxo alcohol having 7 EO as nonionic surfactant.

A preferred liquid laundry composition comprises nonionic surfactant in an amount of

In yet a further embodiment it may also be preferred that the 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 liquid laundry composition.

The liquid composition may also additionally comprise an amphoteric active detergent compound at a preferred level up to 15 wt.% of the liquid laundry composition. The amphoteric active detergent compound is particularly preferably present in the liquid laundry composition in an amount of from 0 to 5,0 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 liquid laundry composition is cocamidopropyl betaine (CAPB), an organic compound derived from coconut oil and dimethylaminopropylamine. In a preferred embodiment, it was beneficial that the liquid laundry composition additionally comprises 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.

It was found to be more preferably beneficial, if the liquid 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 laundry compositions is most preferred.

The liquid laundry compositions comprise said portion of compound of formula (III) in an amount of 0,01 to 0,5 wt.%, preferably of 0,1 to 0,4 wt.% of the liquid laundry composition.

The liquid laundry detergent comprises at least one cationic silicone UV-absorber. Said UV-absorber is preferably comprised in an amount of 0,01 to 1 ,0 wt.% of the liquid laundry composition.

Liquid laundry detergent composition according to preferred embodiment is characterized in that said cationic silicone UV-absorber has an absorption maximum of light in the range of 240 to 350 nm wave length, preferably in the range of 290 to 320 nm wave length.

A preferred liquid laundry detergent composition is characterized in that said cationic silicone UV- absorber is selected from at least one compound having a silicone backbone, grafted with a residue which comprises at least one cationic quaternary nitrogen atom, with the proviso, that said cationic silicone UV-absorber comprises at least one residue, which absorbs UV-light.

The residue, which absorbs UV-light, can either be part of the residue, comprising at least one quaternary nitrogen atom or can bind to the silicone backbone via a different residue. In a preferred cationic silicone UV-absorber, the residue, which absorbs UV-light is derived from cinnamic acid esters or cinnamic acid amides. Particularly preferred residues, which absorb UV-light are derived from cinnamic acid derivatives or/and 2-Cyano-3-phenyl-cinnamic acid derivatives.

Particularly preferred, the residue, which absorbs UV-light is selected from formula (V)

wherein

X is any spacer group between A and the connection to the siloxane backbone *

A is an oxygen atom or a group -NH-,

n is 1 , 2 or 3

R are identical or different and are alkoxy, alkyl, halogen, phenyl, hydroxyl, amino, alkylamino, dialkylamino, di(hydroxyalkyl) amino radicals.

According to formula (V) it is particularly preferred, that one of the above defined residues R binds in para position to the moiety *-X-A-C(=0)-CH=CH-* and is selected from alkoxy, hydroxyl, amino, alkylamino, dialkylamino, di(hydroxyalkyl) amino radicals.

Particularly preferred, the residue, which absorbs UV-light is selected from formula (V-1)

wherein

X is any spacer group between A and the connection to the siloxane backbone *

A is an oxygen atom or a group -NH-,

R is a (Ci-C3)-alkylgroup, preferred Methyl, Ethyl, n-propyl, isopropyl, most preferred methyl.

In the context of the present invention, a liquid laundry composition by preference additionally contains one or more substances from the group of builder, enzymes, non-aqueous solvents, perfume, thickeners, pH adjusting agents, fluorescing agents, hydrotopes, anti-redeposition agents, anti-gray agents, shrinkage preventers, wrinkle protection agents, dye transfer inhibitors, corrosion inhibitors, antistatic agents, bittering agents, ironing adjuvants, electrolytes, proofing and impregnation agents, swelling and anti-slip agents, softening compounds and biocidal compounds.

From the above mentioned further ingredients enzymes, non-aqueous solvents, perfume, pH adjusting agents, fluorescing agents, soil-release polymers, anti-gray agents, dye transfer inhibitors, electrolytes and bittering agents are most preferred included into a liquid laundry composition.

Preferably, the liquid laundry composition additionally contains a perfume composition in order to impart a pleasant scent to the laundry treated therewith and to the composition itself.

In a preferred embodiment, the liquid laundry composition contains a perfume composition in a quantity of usually up to 3 wt.%, preferably 0.05 to 2 wt.%, particularly 0.1 to 1 .5 wt.% and particularly preferably 0.2 to 1 wt.%, in each case based on the total composition.

The perfume composition can contain individual fragrance compounds, for example the synthetic products of the type of the esters, ethers, aldehydes, ketones, alcohols and hydrocarbons. Preferably, however, mixtures of various fragrances are used which together produce an attractive scent. The perfume composition can also contain natural fragrance compounds as may be obtained from plant sources. The perfume composition of the liquid laundry composition can also contain at least one aromatherapy component such as an essential oil. In another preferred embodiment, the liquid laundry composition comprises an encapsulated perfume and a free perfume. The use of pro-fragrances in the perfume composition may be also advantageous.

The liquid laundry composition also preferably contains as detergency builder citric acid and/or organic 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 liquid laundry composition in an amount of from 0.5 to 2 % by weight.

Organic 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 liquid laundry composition in an amount of from 0.2 to 0.8 % by weight.

The liquid laundry composition is manufactured using usual and known methods and processes. For example, the constituents of the textile or hard surface treatment composition can be simply mixed in agitator vessels, the water, surfactants and cationic silicone UV-absorber optional additional actives usefully being prepared first. After cooling under stirring (if necessary at all, the further constituents are then added in portions and) the pH is adjusted.

Another object of this invention is a method of reducing destruction of colorant dye on a textile which method comprises adding at least one cationic silicone UV-absorber to an aqueous liquid laundry composition.

According to the inventive method, the aqueous liquid laundry composition of this invention is used to prepare a wash liquor, comprising 2 to 10 mL of said liquid laundry composition per liter wash liquor. The textiles are contacted with said wash liquor. The wash liquor preferably has a temperature of 20°C to 60°C during the washing process. After the washing process, the wash liquor is removed, the textiles are preferably rinsed and dried.

Examples

The following composition according to table 1 was prepared by mixing the components in water. All amounts given in table 1 are wt.% if not otherwise noted.

Table 1 :

Black woolen garments were washed with E1 according to a standard washing procedure in a top loader washing machine at 30°C, rinsed & dried.

Claims

C l a i m s

1. Liquid laundry detergent composition, comprising

i) water,

ii) a total amount of 5 to 90 wt.% of surfactant,

iii) at least one cationic silicone UV-absorber.

2. Liquid laundry detergent composition according to claim 1 , characterized in that it comprises 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,

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

3. Liquid laundry detergent composition according to claim 2, characterized in that 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.

4. Liquid laundry detergent composition according to claims 2 or 3, wherein the anionic surfactant of formula (I) is chosen from sodium-Ci2-i4 fatty alcohol ether sulfate with two units of ethylene oxide.

5. Liquid laundry detergent composition according to any of the preceding claims, wherein said composition comprises additionally 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.

Liquid laundry detergent composition according to any of the claims 2 to 5, characterized in that the composition comprises said portion of anionic surfactant of formula (I) in an amount of 0,05 to 10,0 wt.%, preferably of 2,0 to 8,0 wt.% .

Liquid laundry detergent composition according to any of the claims 4 to 6, characterized in that the composition comprises said portion of compound of formula (II) in an amount of 0 to 10 wt.%, preferably 0,5 to 5,0 wt.%.

Liquid laundry detergent composition according to any of the preceding claims comprising additionally at least one nonionic surfactant.

Liquid laundry detergent composition according to any of the preceding claims, characterized in that the composition additionally comprises an amphoteric surfactant, preferably a (Cs- C2o)alkylamido-(C2-C3)-alkyl betaine.

Liquid laundry detergent composition according to any of the preceding claims, characterized in that the composition additionally comprises 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.

Liquid laundry detergent composition according to any of the preceding claims, characterized in that said cationic silicone UV-absorber is selected from at least one compound having a silicone backbone, grafted with a residue which comprises at least one cationic quaternary nitrogen atom, with the proviso, that said cationic silicone UV-absorber comprises at least one residue, which absorbs UV-light. Liquid laundry detergent composition according to claim 11 , characterized in that the residue, which absorbs UV-light is selected from formula (V)

wherein

X is any spacer group between A and the connection to the siloxane backbone *

A is an oxygen atom or a group -NH-,

n is 1 , 2 or 3

Liquid laundry detergent composition according to any of the preceding claims, characterized in that said cationic silicone UV-absorber has an absorption maximum of light in the range of 240 to 350 nm wave length, preferably in the range of 290 to 320 nm wave length.

14. A method of reducing destruction of colorant dye on a textile which method comprises adding at least one cationic silicone UV-absorber to an aqueous liquid laundry composition.