ES2550051T3 - Liquid composition for laundry - Google Patents

Abstract

A liquid laundry detergent composition, characterized in that it comprises: (a) 0.0001 to 0.01% by weight of a blue or violet matting colorant; (b) 1 to 70% by weight of a surfactant, wherein the surfactant is a mixture of anionic with nonionic detergent actives; (c) 0.1 to 30% by weight of a sulfonated aromatic formaldehyde polycondensate; and, (d) the rest of the composition are diluents and auxiliary substances up to 100% by weight.

Description

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E12735572

10-13-2015

1.

aromatic sulfonic acids and benzoyl or benzoin chloride

2.

alkylarylsulfonic acids with a halogenated arylsulfonic acid

3.

Naphthols or phenols sulfonated with formaldehyde.

Products can be ethoxylated. The sulfonic acid groups can be sulfomethyl groups.

The polycondensation, ethoxylation, sulfonation, or sulfomethylation steps can occur in any sequential order, but it is preferred that the ethoxylation, sulfonation, or sulfomethylation be performed prior to polycondensation.

Preferred alkali metal salts of the present invention are alkali metal salts of the condensation products of naphthalene sulfonic acids and formaldehyde; naphthalenesulfonic acids, cresol, and formaldehyde; diphenylethersulfonic acids and formaldehyde; toluenesulfonic acids and formaldehyde; isopropylbenzenesulfonic acids and

10 formaldehyde; cresolsulfonic acids and formaldehyde. Most preferably alkali metal salts of the condensation products of naphthalene sulfonic acids and formaldehyde.

A commercial example that is commercially available is TAMOL ™, a trade name of BASF. Other suitable commercial examples are produced by Lanxess, Rohm and Haas Co, BASF and Dow Chemical Company.

Examples of the synthesis of sulfonated aromatic formaldehyde polycondensate are given in GB1101671 (Ciba-Geigy), US3957680 (Mitsui), DE1163284 (Hoechst), US3781169 (Hoechst) and US3874891 (Hoechst).

The preferred structures are:

image2

image3

(SO3H) k

Where k is 1 to 4, preferably 1 to 2, more preferably 1.

R1

H2 C

j

image4 H2 C

j

SO3H

Where R1 is C1-C4 alkyl, preferably methyl or iso-propyl. Where j is 4 to 40, preferably 5 to 20.

3 5

10

fifteen

twenty

25

30

35

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image5 Y YY

O OO

H2 H2 C

C

n

Where Y is selected from [X-O] m-SO3H; [X-O] m-SO3CH3; [X-O] m-H and [X-O] m-CH3, where X is an ethyl or propyl group; m is 1 to 20, preferably 2 to 8; and n is 2 to 25. Aromatic groups are preferably substituted by groups selected from C1-C14 alkyl groups and SO3H.

Preferably, the minimum residual formaldehyde level from the polycondensation is 200 PPM, more preferably 50 PPM and even more preferably 10 PPM.

Matting dye

Matting colorants are deposited on fabrics during the wash or rinse step of the laundering procedure giving a visible hue to the fabric.

Matting colorants are discussed in WO 2005/003274, WO 2006/032327 (Unilever), WO2006 / 032397 (Unilever), WO 2006/045275 (Unilever), WO 2006/027086 (Unilever), WO 2008/017570 (Unilever) ), WO 2008/141880 (Unilever), WO 2009/132870 (Unilever), WO 2009/141173 (Unilever), WO 2010/099997 (Unilever), WO 2010/102861 (Unilever), WO 2010/148624 (Unilever), WO 2008/087497 (P&G) and WO 2011/011799 (P&G).

The shading of white garments can be done with any color depending on the consumer's preference. Blue and violet are particularly preferred shades and consequently preferred dyes or blends of dyes are those that give a blue or violet hue to white fabrics. The matting colorants used in the present invention are preferably blue or purple. A mixture of matting dyes can be used and is indeed preferred for treating mixed fiber textile products. In this regard the dye gives a blue or purple color to a white fabric with a hue angle of 240 to 345, more preferably 260 to 320, more preferably 270 to 300. The white fabric used in this test is a woven cotton canvas. non-mercerized bleached.

The chromophore of the matting dye is preferably selected from the group comprising: monoazo, bisazo, triphenylmethane, triphenodioxazine, phthalocyanine, naphtolactam, azine and anthraquinone. Most preferably monoazo, bisazo, azine and anthraquinone.

More preferably, the colorant has at least one sulfonate group.

Many examples of matting dyes are found in the basic, solvent, acid, direct, and disperse dye classes.

Preferred shading dyes are selected from direct dyes, acid dyes, hydrophobic dyes, cationic dyes and reactive dyes.

The matting colorant is present in the liquid composition in the range of 0.0001 to 0.01% by weight. Depending on the nature of the matting colorant there are preferred ranges depending on the efficacy of the matting colorant which depends on the particular class and efficacy within any particular class. As indicated above, the shading dye is more preferably a blue or violet shading dye.

Direct dyes

Direct blue and direct violet dyes are preferred.

Preferably the dye is a bisazo dye.

Most preferably, the direct dye is a direct violet of the following structures:

4

E12735572

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image6

NaO3S

or

(NaO3S)

n

image7 AND

N

R4

image8

image9

image10

image11

image12

N

NH

NR1R2

R3

N

image13

image14 NaO3S SO3Na

image15

5

wherein: the ring bearing R3 and R4 may independently be naphthyl or phenyl as shown; R1 is selected from: hydrogen and C1-C4 alkyl, preferably hydrogen;

10 R2 is selected from: hydrogen, C1-C4 alkyl, substituted or unsubstituted phenyl and substituted or unsubstituted naphthyl

substituted, preferably phenyl; R3 and R4 are independently selected from: hydrogen and C1-C4 alkyl, preferably hydrogen or methyl;

X and Y are independently selected from: hydrogen, C1-C4 alkyl, and C1-C4 alkoxy; preferably the

The dye has X = methyl; and Y = methoxy, and n is 0, 1 or 2, preferably 1 or 2. Preferred colorants are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51 and direct violet 99. Copper-containing bisazo dyes, such as direct violet 66, can also be used.

Benzidine-based dyes are not preferred. Preferably the direct dye is present at 0.00001% by weight to 0.0010% by weight of the composition. In another embodiment the direct dye may be covalently attached to the photobleach, for example, as described in WO2006 / 024612 and WO2010 / 099997.

Acid dyes

Acidic substantive cotton dyes provide benefits to cotton-containing garments. Preferred dyes and dye mixtures are blue or purple. The preferred acid dyes are:

(i) Azine dyes, in which the dye has the following core structure:

5

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Claims (1)

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