ES2204523T3 - METHOD FOR IMPROVING THE STABILITY OF A COLORING IN FORMULATIONS OF HELP TO RINSE ACIDS, COLORED. - Google Patents

Abstract

A method for improving the stability of a dye used in a colored acidic aqueous composition for rinsing aid against ambient and ultraviolet light radiation, characterized by the steps of: adding a chelator selected from the group to an acidic rinsing aid composition consisting of aminocarboxylates, aminophosphonates, polyfunctionally substituted aromatic chelators, and mixtures thereof, said chelator being present in an amount of at least 1 ppm by weight of said rinse aid composition.

Description

Method to improve the stability of a dye in acidic rinse aid formulations, colored.

Technical field

The present invention relates to formulations rinsing aid acids used in dishwashing automatic. More particularly, the invention relates to a method to improve the stability of a dye used in a Colored acidic aqueous composition helps rinse against the ambient and ultraviolet light radiation of an aid formulation when rinsing a dishwasher.

Prior art

The use of dishwasher rinse aids commercial and institutional as well as in dishwashers Household automatic is well known. In automatic washing of dishes, during the rinse cycle, a final rinse with water sweet serves to displace the previous rinse with water and its auxiliary detergent and earth residues. The formulations of Acid rinses are aqueous solutions that contain a nonionic low foaming surfactant. During the rinse cycle, the rinse aid is injected with the final fresh water rinse in a concentration of about 100 to about 500 ppm. The surfactant in the rinse water decreases the surface tension of the water of rinse and improve the wetting action of the rinse water.

The inventors of the present invention have previously discovered that it is possible to formulate an assistant aqueous rinse containing a low nonionic surfactant foaming and a low weight polyacrylate polymer molecular neutralized, partially neutralized or not neutralized without using a high molecular weight compatibilizer polymer or a high fog point co-surfactant, thus providing a stable aqueous acidic rinse aid dispersion that reduces the stippling and exfoliation while improving the action of Lamination and drainage.

However, an important problem associated with the stable acid dispersions of rinsing aid is that when a dye is added to the composition to give it a color nice, especially a typical blue or green dye, such as for example a blue dye FD&C nº 1, a tendency in said rinse aid compositions to change the color due to exposure to ambient light and light ultraviolet, for example in sunlight. Frequently, if not inevitably, rinse aid products will look subjected to UV light (for example, to sunlight) so repeated and for extended periods of time before being used by the consumer The formulations of the aid products to typical rinses for automatic dishwashing (ADW, del English "automatic dishwashing") are designed specifically in a color that has proven to be aesthetically Nice for consumers. Any change in color chosen for the formulation, especially if a bottle is used, or any other packaging container, light colored or transparent, a negative impact on the consumer perception regarding the quality of the product.

Typically, in the past, the compositions of Colored rinse aid have been formulated at neutral pH or near neutral pH, since it has generally been understood so far that non-acidic rinse aid compositions will not reduce dye stability against ambient light radiation and ultraviolet light. The inventors of the present invention have addressed this issue of dye stability in the present invention and have provided an effective solution to this problem. Before the present invention, there has been no method or composition known so far to address this problem of the stability of the dye in acidic compositions to aid rinse.

Therefore, it has been desirable in this way have an acidic product for colored rinse aid that is not significantly altered by UV light. In addition, despite The technique descriptions mentioned above, has been desirable to have an acidic rinse aid product that has superior performance apart from the appearance of packaging. It is extremely desirable that the appearance of the packaging (for example, color) remains until the Consumer gets rid of the product. The present invention solves The problems presented above.

Prior art

U.S. Pat. Nº 5 254 282, published on October 19, 1993 by Fusiak, describes formulations acidified for the removal of paint that are stabilized against color formation by inclusion of a chelating agent; Y

U.S. Pat. No. 5 206 006, published on April 27, 1993 by Frontini et al., Describes a composition "trinder" type for the detection of hydrogen peroxide detached in a solution, which contains a chelating agent.

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Summary of the invention

The invention addresses the above needs providing a method and a composition to improve the stability of a dye used in an aqueous acidic composition aid to colored rinsing against light radiation ambient and ultraviolet light.

In one aspect of the present invention, the method to improve the stability of a dye used in a aqueous acidic composition for colored rinse aid against ambient light and ultraviolet light radiation includes the stage of add a chelating rinse to an acidic aid composition selected from the group consisting of aminocarboxylates, aminophosphonates, substituted aromatic chelants polyfunctionally, and mixtures of them. The chelator is present in an amount of at least 1 ppm by weight of the composition of Rinse aid.

In another aspect of the present invention, a acidic composition for colored rinse aid that exhibits a improved stability of a dye used in it against the ambient radiation and ultraviolet radiation includes a non-ionic low foaming surfactant present in a range between about 2% and about 80% by weight of The rinse aid composition. The composition also includes a hydrotrope present in a range between about 0.5% and approximately 20% by weight of the rinse aid composition. The composition further includes a polyacrylate polymer present. in a range between about 0.1% and about 15% in weight of the rinse aid composition. The polymer has a average molecular weight in a range between about 1,000 and Approximately 50,000 The composition also includes a chelator selected from the group consisting of aminocarboxylates, aminophosphonates, substituted aromatic chelants polyfunctionally, and mixtures of them. The chelator is present in an amount of at least 1 ppm by weight of the composition of Rinse aid.

Detailed description of the invention

In the preferred embodiment of the present invention, the method includes the step of adding to a composition rinse aid acid a chelator selected from the group that consists of aminocarboxylates, aminophosphonates, chelants polyfunctionally substituted aromatics, and mixtures thereof. The chelator is present in an amount of at least 1 ppm, preferably at least 50 ppm, more preferably at least 100 ppm and even more preferably of at least 150 ppm by weight of the rinse aid composition.

Chelators

The acidic rinse aid composition includes Chelants selected from the group consisting of aminocarboxylates, aminophosphonates, aromatic chelants polyfunctionally substituted, and mixtures thereof. Other chelators Useful include iron and / or manganese chelators. The aminocarboxylates, useful as optional chelants, include ethylenediaminetetraacetates, N-hydroxyethylethylene diamine triacetates, nitrilotriacetates, ethylenediaminetetrapropionates, triethylenetetraaminohexaacetates, diethylenetriaminopentaacetates, and ethanoldiglycins, alkali metal, ammonium salts, salts Ammonium substitutes and mixtures.

The substituted aromatic chelators polyfunctionally include dihydroxydisulfobenzenes such as the 1,2-dihydroxy-3,5-disulfobenzene, and ethylenediamine disuccinate ("EDDS").

In the preferred embodiment, the chelator is selected from the group consisting of acid carboxylate ethylenediaminetetraacetic acid carboxylate diethylenetriaminepentaacetic acid, and mixtures thereof. In another embodiment preferred, chelators are selected from polyphosphonate, ethylenediaminetetraacetic acid carboxylate (EDTA) and carboxylate of diethylenetriaminepentaacetic acid (DTPA). More preferably, The chelator is ethylenetriaminepentaphosphoric acid.

Dyes

\hbox{nº 1}

(que tiene la fórmula molecular C_{37}H_{34}N_{2}Na_{2}O_{9}S_{3}), y mezclas de ellos. Preferiblemente, el colorante tiene un color seleccionado del grupo que consiste en azul, verde, o mezclas de ellos. Se ha descubierto que los colorantes azules y verdes usados típicamente en formulaciones de ayuda al enjuague, tales como el FD&C nº 1, son inestables frente a la luz ultravioleta en condiciones ácidas a menos que la composición de ayuda al enjuague se formule con un quelante de acuerdo con la presente invención. Se ha descubierto que incluso los así llamados "colorantes estables en ácido", tales como el Azul Ácido 80, se decoloran rápidamente si se usan en adyuvantes de enjuague ácidos, es decir, el colorante pierde su color después de una exposición de 1 ó 2 días a radiación de luz UV, a no ser que el adyuvante de enjuague se formule de acuerdo con la presente invención, con un quelante. De forma deseable, los colorantes se añaden en una cantidad en un intervalo entre 0,25% de una disolución al 1% en agua y aproximadamente 0,5% de una disolución al 1% en agua.In the preferred embodiment of the present invention, the dye is selected from the group consisting of Pontamine Blue (Copper Phthalocyanine Dye), and Liquitant Patent Blue (polymeric dye) and FD&C Blue

 \ hbox {nº 1} 

(having the molecular formula C 37 H 34 N 2 Na 2 O 9 S 3), and mixtures thereof. Preferably, the dye has a color selected from the group consisting of blue, green, or mixtures thereof. It has been found that blue and green dyes typically used in rinse aid formulations, such as FD&C No. 1, are unstable against ultraviolet light in acidic conditions unless the rinse aid composition is formulated with a chelator of according to the present invention. It has been found that even the so-called "stable acid dyes," such as Acid Blue 80, quickly discolor if used in acidic rinse aids, that is, the dye loses its color after a 1 or 2 exposure. days to UV light radiation, unless the rinse aid is formulated in accordance with the present invention, with a chelator. Desirably, the dyes are added in an amount in a range between 0.25% of a 1% solution in water and about 0.5% of a 1% solution in water.

Coloring-chelating systems

In the preferred embodiment the dye is select from the group consisting of phthalocyanine dye from copper, FD&C colors # 1, polymeric dyes, and mixtures of them, and the chelator is selected from the group consisting of aminocarboxylates, aminophosphonates, substituted aromatic chelants  polyfunctionally, and mixtures of them. It has been discovered that these "dye-chelating" systems, optimally produce the color stability of the most effective dye against ambient light and UV light radiation, if such dyes are used in acidic rinse aids.

The most preferred chelators are selected between polyphosphonate, ethylenediaminetetraacetic acid carboxylate (EDTA) and diethylenetriaminepentaacetic acid carboxylate (DTPA) in combination with the most preferred dyes selected from blue dyes such as Pontamine Blue (Dye Copper Phthalocyanine), and Blue Liquitant Patent (dye polymeric) and Blue FD&C No. 1 (for example, a Blue FD&C No. 1 which has the molecular formula C 37 H 34 N 2 Na 2 O 9 S 3). These systems dye-chelator discovered by the inventors, when formulated in an acidic rinse aid dispersion, they form all light-resistant stable color systems Ambient and UV light.

The Coloring-Chelating systems especially preferred discovered by the inventors are show below:

Liquitant Patent Blue in combination with DTPA;

FD&C No. 1 in combination with DTPA; Y

Liquitant Patent Blue in combination with DTPA

Carboxylic acids

In the preferred embodiment, the stability of the dye is enhanced by the presence of acids carboxylic. Especially preferred are acids polycarboxylics, such as the Sokolan PA13PN manufactured by BASF, Acusol 480, and Acusol 480N, both manufactured by Rohm & Haas. These polycarboxylic acids provide multiple benefits, since they help stabilize the dye and provide benefits in film formation during the cycle of automatic dishwashing rinse. Desirably, the polycarboxylic acid is present in an amount in a range between 0.25% and 10% by weight of the acidic aid composition rinse, and preferably, in an amount in a range between 1% and 6% by weight.

In another embodiment of the present invention, the colored acidic rinse aid composition presenting a improved stability for a dye used in it against the ambient light and ultraviolet light radiation includes a non-ionic low foaming surfactant present in desirable form in a range between 2% and 80% by weight of the rinse aid composition. The composition also includes a Hydrotrope desirably present in a range between 0.5% and 20% by weight of the rinse aid composition. The composition It also includes a polyacrylate polymer present desirable in a range between 0.1% and 15% by weight of the composition of rinse aid. The polymer has an average molecular weight in an interval between 1,000 and 50,000. The composition also includes a chelator The chelator is present in an amount of at least 1 ppm by weight of the rinse aid composition.

Nonionic low foaming surfactant

Non-ionic surfactants useful in the acid dispersion of rinse aid can be any known low ionic non-ionic surfactant used in dishwashing machine applications. The surfactants do not Typical suitable ionic include the following materials Commercially available: Triton R® CF-10 (a rentylpolyether) and Triton DF-16 (an alcohol modified polyalkoxylated) manufactured by the Rohm and Haas Company; Plurafac LF404®, Plurafac LF400® (linear alcohol alkoxylates mixed), and Pluronic R® L-62 (a copolymer in polyoxyethylene-polyoxypropylene block), all manufactured by BASF Wyandotte Corporation, and the BASF surfactant RA30, manufactured by BASF Corporation. The formulation helps rinse of the invention may contain one or a mixture of said nonionic low foaming surfactants.

Essentially, any non-ionic surfactant Useful for detergent purposes can be included in the rinse aid compositions. As an example, they are shown then types of nonionic surfactants useful in a non- limiting

(i) Non-ionic fatty acid amide surfactant polyhydroxylated

Polyhydroxy fatty acid amides suitable for use here are those that have the formula structural R 2 CONR 1 Z where: R 1 is H, hydroxycarbyl C 1 -C 4, 2-hydroxyethyl, 2-hydroxypropyl, or a mixture of them, preferably C 1 -C 4 alkyl, more preferably C 1 or C 2 alkyl, and even more preferably C 1 alkyl (ie, methyl); and R2 is a C 5 -C 31 hydrocarbyl, preferably a C 5 -C 19 alkyl or alkenyl chain linear, more preferably an alkyl or alkenyl C_ {9} -C_ {17} linear chain, and even more preferably an alkyl or alkenyl C 11 -C 17 straight chain, or a mixture of they; and Z is a polyhydroxycarbyl that has a chain linear hydrocarbyl with at least 3 hydroxyls connected directly to the chain, or an alkoxylated derivative (preferably ethoxylated or propoxylated). Preferably Z will be derived from a reducing sugar in a reductive amination reaction; plus preferably Z is a glyclyl.

(ii) Non-ionic alkylphenol condensates

The condensates of polyethylene oxide, from polypropylene and polybutylene alkylphenols are suitable for its use here. In general, oxide condensates of polyethylene. These compounds include the products of condensation of alkylphenols having an alkyl group that contains between 6 and 18 carbon atoms both in configuration of linear chain as branched chain with oxide alkylene

(iii) Non-ionic ethoxylated alcohol surfactant

The alkylethoxylated condensation products of aliphatic alcohols with between about 1 and about 25 moles of ethylene oxide are suitable for use here. The alkyl chain of the aliphatic alcohol can be both linear and branched, primary or secondary, and generally contains between 6 and 22 carbon atoms. Products are particularly preferred of condensation of alcohols having an alkyl group that contains between 8 and 20 carbon atoms with between 2 and 10 moles of ethylene oxide per mole of alcohol.

(iv) Non-ionic fatty alcohol surfactant ethoxylated / propoxylated

Fatty alcohols C 6 -C 18 ethoxylates and fatty alcohols C_ {6} -C_ {mixed ethoxylated / propoxylated are highly preferred surfactants for use here, particularly if they are soluble in water. Preferably the ethoxylated fatty alcohols are fatty alcohols C 10 -C 18 ethoxylated with a degree of ethoxylation between 3 and 50, more preferably these are alcohols C 12 -C 18 ethoxylated fatty acids with a degree of ethoxylation between 3 and 40. Preferably fatty alcohols mixed ethoxylated / propoxylated has an alkyl chain length of between 10 and 18 carbon atoms, a degree of ethoxylation between 3 and 30 and a degree of propoxylation between 1 and 10.

(v) Non-ionic EO / PO condensates with propylene glycol

The condensation products of ethylene oxide with a hydrophobic base formed by the condensation of oxide of Propylene with propylene glycol are suitable for use here. The hydrophobic portion of these compounds preferably has a weight molecular between 1500 and 1800 and presents insolubility in water. Examples of compounds of this type include certain commercially available Pluronic® surfactants, marketed by BASF.

(vi) Non-ionic EO condensation products with adducts propylene oxide / ethylenediamine

The condensation products of ethylene oxide with the product resulting from the reaction of propylene oxide and Ethylenediamine are suitable for use here. The hydrophobic rest of these products consists of the reaction product of ethylenediamine and propylene oxide in excess, and generally has a molecular weight between 2500 and 3000. Examples of this type of nonionic surfactant include certain Tetronic® compounds commercially available, marketed by BASF.

(vii) Non-ionic alkylpolysaccharide surfactant

The alkylpolysaccharides suitable for use Here they are described in US Pat. No. 4 565 647, Filling, published on January 21, 1986, which have a hydrophobic group that contains between 6 and 30 carbon atoms, preferably between 10 and 16 carbon atoms and a hydrophilic polysaccharide group, per example, a polyglycoside, which contains between 1.3 and 10, preferably between 1.3 and 3, and more preferably between 1.3 and 2.7 saccharide units. Any saccharide reducer containing 5 or 6 carbon atoms can be used, for example, the remains glucose, galactose and galactosyl can be substituted by glucosyl residues (Optionally the hydrophobic group is attached to positions 2-, 3-, 4-, etc. thus providing a glucose or a galactose as opposed to a glycoside or a galactoside). The intersaccharide bonds can be, for example, between the position of the additional saccharide units and the positions 2-, 3-, 4-, and / or 6- of saccharide units precedents

Preferred alkyl polyglycosides have the formula:

R 2 O (C n H 2 O) t (glycosyl) x

where R2 is selected from the group that consists of alkyl, alkylphenyl, hydroxyalkyl, hydroxyalkylphenyl, and mixtures thereof in which the groups alkyl contain between 10 and 18, preferably between 12 and 14, carbon atoms; n is 2 or 3, preferably between 1.3 and 3, plus preferably between 1.3 and 2.7. Preferably, the glycosyl it derivates from glucose.

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(viii) Non-ionic acid amide surfactant fatty

The fatty acid amide surfactants Suitable for use here are those that have the formula:

\uelm{C}{\uelm{\dpara}{O}}

---N(R^{7})_{2}R 6 ---

 \ uelm {C} {\ uelm {\ dpara} {O}} 

--- N (R 7) 2

where R 6 is an alkyl group containing between 7 and 21, preferably between 9 and 17 carbon atoms and each R 7 is selected from the group consisting of hydrogen, C 1 -C 4 alkyl, hydroxyalkyl C 1 -C 4, and - (C 2 H 4 O) x H, where x is the interval between 1 and 3.

The hydrotrope useful in the present dispersion of Rinse aid is selected from the group consisting of sulphonate cumene sodium, xylene sodium sulphonate, toluenesulfonate sodium, dioctyl sodium sulfosuccinate, naphthalene sulphonate dihexyl alkyl and sodium sulfosuccinate. Preferably, the Hydrotrope is cumene sodium sulphonate.

Polyacrylate polymer

The low weight polyacrylate polymer molecular useful in the present acidic rinse aid dispersion is selected from the group consisting of homopolymer of polyacrylate, polyacrylate copolymer, terpolymer of polyacrylate, and mixtures of them. Preferably, the polymer of polyacrylate is a partially polyacrylate polymer neutralized or non-neutralized that has a pH in the range between 2.0 and 4.0. Desirably, in the preferred embodiment the Polyacrylate polymer is at least 75% non-neutralized. Alternatively, the polyacrylate polymer is not neutralized. Alternatively, a neutralized polyacrylate polymer, which it is neutralized to more than 25% can also be used, but it you must add an acid in sufficient quantity to carry the value of pH of the resulting rinse aid dispersion at the interval between 2 and 6.

Typically the polyacrylate polymer is a homopolymer of acrylic acid or methacrylic acid, or a copolymer formed from at least 50 percent by weight of Acrylic Acid The polyacrylate polymer is a low polymer molecular weight or its ammonium or alkali metal salt, which has a weight average molecular weight ranging from 1,000 to 50,000.

Acid

If an acid is added to the aid dispersion to the rinse, any acid can be used although they are more desirable organic acids and the preferred organic acid is acid citric.

It has been discovered that even in the absence of a compatibilizing polymer of high molecular weight, but with the addition of a hydrotrope and under acidic conditions, the dispersion of stable rinse aid does not produce separate phases during storage for a reasonable period of time or under actual conditions of use and allows each component to reduce Effectively stippling and exfoliation and improve the action of laminated without interfering with the foaming and defoaming action of the surfactant

In the preferred embodiment, the formulation of rinse aid of the invention is an aqueous dispersion at a pH between 2 and 6. Preferably, the pH ranges between 3 and 5.

The rinse aid dispersion of the present invention is preferably prepared by stirring the desired amount of surfactant in an aqueous solution of the acid low molecular weight polyacrylic not neutralized or neutralized only partially (neutralized by no more than 25%) followed by a gradual addition of the hydrotrope and, if necessary, citric acid to bring the dispersion to the desired pH range.

The formulation may also contain other adjuvants that include chelants such as NTA, EDTA, or citrate sodium and water miscible solvents such as ethanol, isopropanol and propylene glycol. Ethanol is the preferred solvent, Desirably present in a range between 0.1% and 10% by weight of the rinse aid dispersion and preferably in a range between 2% and 8% by weight.

Hydrotrope

In the preferred embodiment, the hydrotrope is select from the group consisting of sodium cumene sulphonate, xylene sodium sulphonate, sodium toluenesulfonate, sulfosuccinate dioctyl sodium, alkyl naphthalenesulfonate and sulphosuccinate dihexyl sodium. Preferably, the hydrotrope is sulfonate sodium of cumene, and partially polyacrylate polymer neutralized is a polyacrylate copolymer that is neutralized approximately 20%. In the preferred embodiment, the dispersion stable aqueous rinse aid is essentially free of a compatibilizing polymer of high molecular weight and is also free of an additional nonionic surfactant having a point of fog of at least 70 degrees C.

The following examples are intended to illustrate the invention.

Example 1

A dispersion aid to rinse according with the present invention it has been carried out as follows, from The following composition, in percentage by weight:

Nonionic surfactant of low foaming 20.0% Hydrotrope of sodium sulphonate cumene 7.0% Polyacrylate Copolymer (neutralized to twenty%) 4.5% Ethanol 6.0% Chelator (DTPA) 0.015% Patent Blue Liquitant 0.25% Water 62.235%

This dye has stability against the UV and ambient light radiation and its color remains unchanged after UV radiation exposure for 1-2 days.

Example 2

Another dispersion helps rinse according with the present invention it is obtained as follows, from the following composition, in percentage by weight:

Nonionic surfactant of low foaming 35.0% Hydrotrope of sodium sulphonate cumene 4.0% Polyacrylate Copolymer (neutralized to 20%) 4.0% Acid citric 1.6% Ethanol 6.0% Chelator (polyphosphonate) 0.015% blue FD \ textamp C nº one 0.25% Water 49,135%

This dye has stability against the UV and ambient light radiation and its color remains unchanged after UV radiation exposure for 1-2 days.

Example 3

Another dispersion helps rinse according with the present invention it is obtained as follows, from the following composition, in percentage by weight:

Nonionic surfactant of low foaming 12.0% Hydrotrope of sodium sulphonate cumene 4.0% Polyacrylate Copolymer (neutralized to 20%) 1.0% Acid citric 1.6% Ethanol 5.0% Chelator (polyphosphonate) 0.015% blue FD \ textamp C nº one 0.25% Water 76,135%

This dye has stability against the UV and ambient light radiation and its color remains unchanged after UV radiation exposure for 1-2 days.

The above rinse aid formulations They are prepared by the following procedure: quantities appropriate of: a surfactant is added to a beaker non-ionic low foaming (Plurafac LF 404®), a 45% active cumene sodium sulphonate hydrotrope (active SCS 45%), a 50% active polyacrylate copolymer (Acusol 480®, manufactured by Rohm & Haas), a 50% active citric acid, ethanol and deionized water and stirred sequentially. I also know add a chelator in an amount of 0.015% by weight (150 ppm in weight) and a dye as indicated. The resulting mixture obtained is a single phase dispersion, colored blue or green and stable, without phase separation occurring after that the resulting mixture is kept at rest in a container closed for a period of 2 weeks at a temperature of 50 degrees C. In addition, the resulting mixture has no more than approximately 30% dye discoloration when exposed to ambient light for 6 months, and no more than approximately 30% dye discoloration when it is exposed to UV light for 2 days.

Claims (8)

1. A method to improve the stability of a dye used in a colored acidic aqueous composition that helps rinse against ambient and ultraviolet light radiation, characterized by the steps of:

add to an acidic composition to help rinse a chelator selected from the group that consists of aminocarboxylates, aminophosphonates, chelants polyfunctionally substituted aromatics, and mixtures thereof, said chelator being present in an amount of at least 1 ppm in weight of said rinse aid composition.

2. A method according to claim 1, wherein said chelator is present in an amount of at least 50 ppm by weight of said rinse aid composition. 3. A method according to the claims 1-2, in which said chelator is selected from group consisting of acid carboxylate ethylenediaminetetraacetic acid carboxylate diethylenetriaminepentaacetic acid, and mixtures thereof. 4. A method according to the claims 1-3, wherein said chelator is acidic ethylenetriaminpentaphosphorus. 5. A method according to the claims 1-4, wherein said dye is selected from the group consisting of copper phthalocyanine dye, color FD&C No. 1, polymeric dyes, and mixtures thereof. 6. A colored acidic rinse aid composition that has improved stability of a dye used therein against ambient and ultraviolet light radiation, characterized by:

a nonionic surfactant of low foaming present in a range between 2% and 80% in weight of said rinse aid composition;

a hydrotrope present in a range between 0.5% and 20% by weight of said aid composition at rinse;

a polyacrylate polymer present in a range between 0.1% and 15% by weight of said rinse aid composition, said polymer having a weight molecular weight average in a range between 1,000 and 50,000; Y

a chelator selected from group consisting of aminocarboxylates, aminophosphonates, chelants polyfunctionally substituted aromatics, and mixtures thereof, said chelator being present in an amount of at least 1 ppm in weight of said rinse aid composition.

7. An acidic rinse aid composition of according to claim 6, wherein said adjuvant of Rinse has a pH in a range between 2 and 7. 8. An acidic rinse aid composition of according to claim 6, which includes an acid present in a range between 0.1% and 20% by weight of said aid composition when rinsing