MXPA06005186A - Surface brightening composition - Google Patents

Abstract

A surface cleaning composition is described comprising polyvinyl alcohol, at least one compound selected from the group consisting of the fluorescent whitening agents and at least one surfactant for use in delivering a whitening and brightening effect to a variety of surfaces. Such compositions can be applied directly to the surface or may be applied using a pre-treated wiping cloth or implement.

Description

SURFACE POLISHING COMPOSITION The present invention relates to a surface cleaning composition and, in particular, to an aqueous surface cleaning composition, which comprises the polyvinyl alcohol, at least one fluorescent whitening agent and a suitable surfactant. The present invention also relates to disposable cleansers or cushions impregnated with said composition. The composition provides an enhanced cleaning and polishing effect on the surfaces.

BACKGROUND OF THE INVENTION Surface cleaning compositions are well known and are presented as many different formulations, depending on the particular application and use. Surface cleaning compositions may, for example, be provided as ready-to-use compositions, or as concentrates that are diluted before use; as liquid formulations that can be sprayed, cream formulations or in the form of disposable cleansers. Surface cleaners can be used, for example, to clean surfaces in the kitchen, bathroom and other areas, both inside and outside. Surfaces may include floors, slabs, glass, ceramics, pewter, accessories, stones, bricks, plastic, vinyl, painted surfaces and the like. Optical brighteners (or fluorescent whitening agents, FWA) are dyes that are deposited on fabrics, paper or other materials, and impart a greater increase in whiteness and / or brightness to the surface, through their ability to absorb light in the ultraviolet region of the spectrum and re-emit it as visible light in the blue region of the visible spectrum. FWAs have found wide use as components of household detergent compositions, but have limited application in surface cleaning formulations. Patent GB 2,359,818 describes the incorporation of FWAs in hard surface cleaning formulations. The U.S. patent No. 5,234,617 teaches a liquid bleaching composition containing the FWA and the polyvinyl-pyrrolidone. WO 99/07636 claims the incorporation of FWA in bleach-containing compositions. It has now been found that a fluorescent whitening agent, combined with polyvinyl alcohol and a suitable surfactant in aqueous solution, delivers an increased bleaching and brightening effect in one embodiment. variety of surfaces.

Detailed Description The present invention relates to an aqueous surface cleaning composition, comprising water and with a weight based on the weight of the entire composition: a) from about 0.1 to about 20% soluble polyvinyl alcohol (PVOH) , with an average molecular weight between about 5,000 and 200,000, and a hydrolysis level between about 70 to about 100%; • b) from about 0.01% to about 10% of at least one compound selected from the group consisting of fluorescent whitening agents; and c) from about 0.001% to about 10% of at least one compound selected from the group consisting of surfactants; wherein the weight ratio of a) ab) is between about 20: 1 to about 1:10, and the pH of the composition is between about 1 to 11. The volume of the remainder of the composition is water.- The composition may also contain a variety of other optional ingredients, known in the use of cleaning or polishing formulations of surfaces, such as surfactants, forming agents, polymers, solvents, alcohols, glycols, perfumes, dyes, abrasives, bleaches, biocides, fungicides, and the like. The compositions of the present invention are useful for cleaning, bleaching and polishing a variety of hard surfaces, soft surfaces (eg fabrics), or other substrates. The composition can be applied as a spray ready for use, a liquid or a paste, directly on the surface, which is then cleaned using a paper towel, sponge, cloth, mop or other suitable cleaning accessory, alternatively, the composition can be applied first to the cleaning attachment and lego the surface. The composition can also be used in a form that can be diluted, i.e., a concentrate, which can be diluted with water to obtain the present cleaning composition. In a preferred application, the composition can be added to a cleanser or cushion, which is either reusable or disposable, which is used to treat the surface by rubbing. The composition is absorbed into or adsorbed onto the cleanser or cushion, i.e., the cleanser or cushion is impregnated with the aqueous cleansing composition,. Such a cleaner can be constructed of natural fibers or synthetic, for example, polyolefin, woven or non-woven cellulosic fibers, or any other material or combination of materials suitable for obtaining a cleaning cloth, as are known to those skilled in the art. These cleaning fabrics are typically constructed of nonwoven materials. The polyolefin is, for example, polypropylene or polypropylene copolymers or mixtures thereof. The cellulosic material is a material based on cellulose. Therefore, a reusable or disposable cleaner or cushion is also described for cleaning a surface, which has absorbed therein or adsorbed thereon an aqueous surface cleaning composition, comprising water and, by weight, base to the weight of the entire composition: a) from about 0.1 to about 20% soluble polyvinyl alcohol (PVOH), with an average molecular weight between about 5,000 and 200,000, and a hydrolysis level between about 70 to about 100%; b) from about 0.01% to about 10% of at least one compound - selected from the group consisting of fluorescent whitening agents; and c) from approximately 0.001% to approximately -the % of at least one compound selected from the group consisting of surfactants; wherein the weight ratio of a) to b) is between about 20: 1 to about 1:10, and the pH of the composition is between about 1 to 11. Cleansers and cushions are well known in the art. They are taught, for example, in U.S. patents. Nos. 3,965,519, 3,967,623, 4,077,410, 4,154,883 and 5,895,104, the disclosures of which are incorporated herein by reference. Other cleaning accessories are within the scope of this invention, for example, sponges, mops and the like. A concentrate of a cleaning composition is described, comprising, by weight, based on the weight of the concentrate: a) about 0.25% to about 50% of the soluble polyvinyl alcohol (PVOH), with an average molecular weight between about of 5,000 and 200,000, and a hydrolysis level between about 70 to about 100%; b) about 0.25% to about 50% of at least one compound selected from the group consisting of fluorescent whitening agents; and c) about 0.0025% to about 25% of at least one compound selected from the group consisting of surfactants; wherein the weight ratio of a) to b) is between about 20: 1 to about 1:10. Also disclosed is a method for providing an enhanced bleaching and brightening effect to a surface, this method comprises applying the present aqueous surface cleaning composition to said surface, or applying the cleaning composition to a cleaning accessory and then the surface and clean this surface with a cleaning accessory. Also disclosed is a method for providing an enhanced bleaching and brightening effect to a surface, this method comprises diluting a concentrate with water to obtain the present aqueous cleaning composition, applying the cleaning composition to said surface, or applying the cleaning composition. to a cleaning attachment and subsequently to the surface, and cleaning said surface with the cleaning accessory. A method for providing an enhanced bleaching and brightening effect to a surface is also disclosed, this method comprises cleaning the surface with a reusable or disposable cleanser or cushion, this cleanser or cushion absorbs within it or adsorbs thereon, the present composition cleaning.

Also disclosed is a method for preparing a reusable or disposable cleanser or cushion, useful for providing a whitening or brightening effect to a surface, this method comprising impregnating within or applying to a cleanser or cushion the present aqueous cleansing composition. While you do not want to be tied to the theory, it is believed that the present invention creates an optimized bleaching and brightening effect on a surface, due to the uniform distribution of the FWA through the PVOH film, which is deposited on the surface to be cleaned. The surfactant increases the bleaching effect causing a more uniform film to be formed on the surface. The combined effect of all three components is significantly higher than FWA alone and PVOH alone.Polyvinyl Alcohol Polyvinyl alcohol (PVOH) in the present invention is a water soluble polymer, which typically dissolves in water, by heating at 50-95 ° C for 10-120 minutes. Suitable degrees of polyvinyl alcohol include materials of molecular weight between about 5,000 and about 200,000, and hydrolysis levels between about 70% and about 100%. It has been found in the present invention that the bleaching effect is increased with the PVOH, which is of higher molecular weight and less hydrolysis. Thus, the preferred grade has an average molecular weight between about 50,000 and about 200,000, and a hydrolysis level between about 70 and about 95%. In a particularly preferred embodiment, the PVOH has an average molecular weight between about 85,000 and about 200,000 and the hydrolysis level between about 75 and about 90%. In addition to the enhanced bleaching effect, the present PVOH grades, listed above, are found to result in a bleaching effect that is more stable with respect to degradation caused by light, oxidation or other degradation processes versus other PVOH grades. Other polymers can be added to the composition of any structural type or amount, in which they, as described, do not adversely affect the bleaching and brightening effect of said composition.

The PVOH component is present in about 0.1% to about 20% by weight, based on the weight of the entire composition. For example, the component of PVOH is present from around 0.2% to around 15%, from around 0.3% to around 12%, from around 0.5% to around 10%, or from around 0.6% to around 9%, 'with based on the weight of the entire composition. For example, the PVOH component is present from about 0.6% to about 5%, around 0.6 & to about 4% or from about 0.6% to about 3% by weight, based on the weight of the entire composition.

Fluorescent Blanking Agents (FWA) Any of the various FWA or optical brighteners known in the art may be used in the present invention. Two or more FWA can also be combined in a given composition. Examples of FWA that can be used in the present invention are stilbene derivatives, such as 4, '-bis (triazine-2-ylamino) -stilbene ~ 2, 2'-disulfonic acid, mono (azole-2-azole). il) stilbene and bis (azol-2-yl) stilbene; styrene derivatives of benzene and biphenyl, such as 1,4-bis (styryl) benzene, 4,4'-bis (styryl) benzene, 4,4'-bis- (styryl) biphenyl, sodium salt of 4, '-bis (2-sulphotyryl) biphenyl, pyrazolines, such as derivatives of 1,3-diphenyl-2-pyrazoline; bis (benzene-2-yl). bis (benzoxazol-2-yl) derivatives and bis (benzimidazol-2-yl) derivatives; 2- (benzofuran-2-yl) - benzimidazole; coumarins, such as 4-methyl-7-hydroxycoumarin or 4.methyl-7-diethylaminocoumarin; carbestyryls, naphthalimides, dibenzothiophen-5, 5-dioxide, pyrene; or pyridotriazole derivatives. The FWA component is present from about 0.01% to about 10% by weight, based on the weight of the entire composition. For example, the FWA component is present from about 0.05% to about 8%, from about 0.1% to about 7%, from about 0.3% to about 5% by weight, based on the weight of all to composition. For example, the FWA component is present from about 0.3% to about 4%, from about 0.3% to about 3%, from about 0.3% to about 2%, or about 0.3% around 1% by weight, based on the weight of the entire composition.

Surface-active agents The surfactant provides adequate film-forming properties, to enable a. formation of a homogeneous film of PVOH and FWA on the surface being treated. The surface active agents are soluble in water or dispersible in water. These surfactants are well known in the art.

A surfactant agent used in the present invention may be selected from one or more surfactants, which may be anionic, cationic, nonionic, amphoteric or zwitterionic (ambiguous). Nonionic surfactants, which may be used in the present invention include, but are not limited to, alkylated alcohols, including ethoxylated and propoxylated alcohols, as well as ethoxylated and propoxylated alkylphenols. Other classes include the fatty esters of sorbitan and fatty acids of unsaturated alcohols. Other classes include fluorine surfactants, such as the Dupon ZONYL family, or silicone-based surfactants, such as SILWET and COATOSIL, General Electric families. The surfactants of type ZONYL, SILWET and COATOSIL are also available in the anionic and cationic versions, which may also be effective in the present invention. DYNOL 604 is a useful surfactant agent, the ethoxylate of 2, 5, 8, 11-tetramethyl-6-dodecin-5,9-diol, CAS # 169117-72-0.

Examples of anionic surfactants that can be used in the present invention include, but are not limited to, alkali metal salts, ammonium salts, amine salts, salts of amino alcohols or magnesium salts. of one or more of the following compounds: alkyl sulfates, alkyl ether sulfates, alkylamidoether sulphates, monoglyceride sulfates, alkyl sulfonates, alkylamide sulfonates, alkylaryl sulfonates, paraffin olefin sulfonate sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkyl phosphates, alkyl ether phosphates and similar compounds. The amphoteric and betaine surfactants can be used in the present invention, as those skilled in the art know. Cationic surfactants which can be used in the present invention include the quaternary ammonium compounds and their salts, which include the alkyl ammonium halides, alkyl aryl ammonium halides, N-alkyl pyridinium halides and related materials. A mixture of two or more surface active agents, not particularly described above, may also be used.

Useful surfactants are described, for example, in U.S. Pat. 6,372,702, incorporated herein by reference. The component of the reactive agent is present from about 0.001% to about 10% by weight, with based on the weight of the entire composition. For example, the surfactant component is present from about 0.005% to about 8%, from about 0.01% to about 7%, from about 5% to about 6%, from about 0.07% to about 5%. %, or from about 0.8% to about 4% by weight, based on the total composition. For example, the surfactant component is present from about 0.1% to about 3% by weight, based on the weight of the entire composition. The weight: weight ratio of the PVOH: FWA, that is component a) to component b), is between about 10: 1 and about 1:10. For example, weight weight ratio of PVOH: FWA is between about 10: 1 and about 1: 5, between about 5: 1 and about 1: 1 or between about 4: 1 and about 2: 1. The pH of the compositions of this invention is, for example, between about 1 and about 11, for example between about 2 and about 10, between about 3 and about 9, between about 4 and about 8. or between about 5 and about 7.

Examples In the following examples, the whiteness of ceramic slabs was measured using a Hunter colorimeter Laboratories LabScan XE Colorimeter. This whiteness is expressed in terms of the CIÉ Whiteness index, defined as Y + 800 (xn-x) +1700 (yn-y), where Y is the tristimulus value and x and y are the chromaticity coordinates. For each slab treated, the Whiteness Index (Wl) was measured on the treated and untreated side (control) of the slab and the difference was recorded. The Wl values are generally found to correspond well with what a human observer sees as whiteness or brilliance. Unless stated otherwise, the amounts are in the weight per hundred, based on the entire formulation,. FWA is a bleacher of the type of diethyrylbiphenyl, the sodium salt of 4,4'-bis (2-sulphotrisyl) ifenyl, Example 1 A series of five alcohol samples Polymer of various molecular weights and hydrolysis levels were used to prepare 1.5% (by weight) solutions. The solutions were prepared by adding an appropriate amount of HPV. solid to deionized water and heating the aqueous slurry of the solid polymer to about 80 ° C for about 30 minutes until completely dissolved. The types of the PVOH employed are listed below. The solution was then cooled. To 9.95 g of each PVOH solution 0.05 g of FWA (0.5% by weight) was added and the mixture was stirred until dissolved. An additional sample was prepared with the FWA in water alone. A second set of identical solutions was then prepared with the further addition of 0.5% by weight of a non-ionic Gemini surfactant (1: 1 mixture of Surynol® 485W and Dynol® 604, ethoxylated alkynediol-diol surfactants, available Commercial products from Air Products and Chemicals, Inc. Bright ceramic tiles (20 cm x 10 cm) were treated in one half with the previous solutions, adding 0.75 ml to the surface of the slab and cleaning for 20 seconds with a paper towel The solution was then allowed to air dry and the two sides were measured using the colorimeter.The difference in the value of the index was doubled until the solution was uniformly dispersed in the middle of the surface of the slab. whiteness (Wl) between the treated and untreated sides of each slab was then measured. K = 1000 High molecular weight PVOH samples gave lower whiteness performance vs. those with weight low molecular In addition, for those samples of PVOH with similar molecular weight, those with lower hydrolysis levels give a better whiteness. Finally, it can be seen that the addition of the nonionic surfactant results in a significant improvement in the effect versus the same solution without surfactant.

Sample 2 To a piece of nonwoven fabric (15 cm x 15 cm) comprised of 50% rayon and 50% polyester, with a thickness of 38 m, 3 ml of a solution containing 1.5% PVOH (MW) was added. 85,000-146-000, 87-89% hydrolyzed), 0.5% FWA and 0.5% non-ionic Gemini type surfactant, as prepared in Example 1. The non-woven fabric was rolled moderately until the solution moistened completely and uniformly the fabric. This cloth is then used to clean a ceramic slab by cleaning back and forward half the surface of the slab for 20 seconds. The surface is then allowed to air dry and the slab was measured using the colorimeter. The treatment of the slab with the impregnated cleaning cloth resulted in a significant and visible increase in whiteness, and a measured increase in the Whiteness Index of 48.9 units versus the control side.

Example 3 To a series of solutions of 1.5% PVOH (average M of 120,000); 00.3% hydrolyzed) and 0.5% of FWA were added three different surfactants based on silicone, at a level of 0.1%. Bright ceramic slabs were treated as described in Example 1 and Wl values were recorded for the treated and untreated sides of each slab, as illustrated in the following table.

The addition of the silicone-based surfactant resulted in a significant increase in the whiteness on the treated side of the slab versus the solutions without the surfactant. COSTIL and SILWET products (GE Chemicals) are silicone wetting agents that include dimethylpolysiloxane and blocked or grafted polymers of alkylene glycols as effective components.

Example 4 Two solutions were prepared with 1.5% PVOH (MW 85,000-146-000, 87-89% hydrolyzed), 0.5% FWA and 0.2% by weight of either Dynol® 604 (Air Products) or Coatosil® 1301 ( GE Silicones). White vinyl floor slabs (7 cm x 14 cm, Armstrong Tile) were treated in one half with the previous solutions, adding 0.50 ml to the surface of the slab and cleaning for 20 seconds with a folded paper towel until the solution it dispersed evenly in the middle of the surface of the slab. The solution was then allowed to air dry. The difference in the value of the Indica whiteness (Wl) between the treated and untreated sides of each slab is then measured.

The treated sides of the slabs were visibly whiter and had Wl values substantially greater than the untreated sides.

Claims (20)

1. CLAIMS 1. An aqueous cleaning composition for surfaces, which comprises water and, a percentage by weight, based on the weight of the entire composition; a) from about 0.1 to about 20% soluble polyvinyl alcohol (PVOH), with an average molecular weight between about 5,000 and 200,000, and a hydrolysis level between about 70 to about 100%; b) from about 0.01% to about 10% of at least one compound selected from the group consisting of fluorescent whitening agents; and c) from about 0.001% to about 10% of at least one compound selected from the group consisting of surfactants; wherein the weight ratio of a) to b) is between about 20: 1 to about 1:10, and the pH of the composition is between about 1 to about 11.
2. 2. A composition, according to claim 1, wherein the polyvinyl alcohol has an average molecular weight between about 50,000 and approximately 200,000, and a hydrolysis level between about 70 and about 95%
3. 3. A composition, according to claim 1, wherein the polyvinyl alcohol has an average molecular weight between about 85,000 and about 200,000, and a level of hydrolysis between about 75 and about 90%.
4. 4. A composition, according to the claim 1, wherein the polyvinyl alcohol is present from about 0.5% to about 10% by weight, based on the weight of the entire composition.
5. 5. A composition, according to the claim 1, wherein the polyvinyl alcohol is present from about 0.6% to about 4% by weight, based on the weight of the entire composition.
6. 6. A composition, according to the claim 1, wherein the fluorescent whitening agents are selected from the group consisting of the styrylbenzene derivatives styrene derivatives of benzene and biphenyl, pyrazolines, bis (benzene-2-yl) derivatives, bis (benzoxazol-2-yl) derivatives and bis (benzoimidazol-2-yl) derivatives, 2- (benzofuraan-2-yl) ) -benzimidazole; coumarins, carbestyryls, naphthalimides, dibenzothothiophen-5, 5-dioxide, pyrene and pyridotriazole derivatives.
7. 7. A composition, according to claim 1, wherein the fluorescent whitening agents are selected from the group consisting of 4, '-bis (triazine-2-ylamino) -stilbene-2, 2'-disulfonic acid, mono (azole-2) -yl) stilbene and bis (azole-2-yl) stilbene; 1, -bis (styryl) benzene, 4,4'-bis (styryl) benzene, 4,4'-bis- (styryl) biphenyl, sodium salt of 4,4'-bis (2-sulfoes-iryl) biphenyl, 1,3-diphenyl-2-pyrazoline; bis (benzene-2-yl) -2- (benzofuran-2-yl) -benzimidazole; 4-methyl-7-hydroxy-coumarin or 4.methyl-7-diethylaminocoumarin; carbestyryls, naphthalimides, dibenzothiophen-5, 5-dioxide and pyrene; .
8. 8. A composition, according to the claim 1, wherein fluorescent whitening agents are selected from the group consisting of 4,4'-bis (triazine-2-ylamino) -stilbene-2, 2'-disulfonic acid, 4,4'-bis (styryl) benzene, 4 , 4'-bis- (styryl) -biphenyl, sodium salt of 4,4'-bis (2-sulphotrisyl) biphenyl.
9. 9. A composition, according to the claim 1, wherein fluorescent whitening agents are present from about 0.1% to about 7% by weight, based on the weight of the entire composition.
10. 10. A composition, according to the claim 1, where the fluorescent whitening agents. they are present from about 0.3% to about 2% by weight, based on the weight of the entire composition.
11. 11. A composition, according to the claim 1, wherein the surfactants are selected from the group consisting of anionic, cationic, nonionic, amphoteric and zwitterionic surface active agents (ambiguous).
12. 12. A composition, according to the claim 1, wherein the surfactants are selected from the group consisting of: alkoxylated alcohols, alkoxylated alkyl phenols, sorbitan fatty esters, fatty acids of unsaturated alcohols, fluorine surfactants, silicone-based surfactants; alkali metal salts, ammonium salts, amine salts, arainoalcoholes rooms or the magnesium salts of alkyl sulfates, alkyl ether sulfates, alkylamidoether sulfates, monoglyceride sulfates, alkyl sulfonates, alkylamine sulfonates, sulfonates alkylaryl, olefin sulfonates, paraffin sulfonates, alkyl sulfosuccinates, alkyl ether sufosuccinates, alkyl phosphates or alkyl ether phosphates; alkylammonium halides, alkyl aryl aio halides and N-alkyl pydinium halides.
13. 13. A composition, according to claim 1, wherein the surfactants are present from about 0.01% to about 7% by weight, based on the weight of the entire composition.
14. 14. A composition, according to the claim 1, wherein the surfactants are present from about 0.05 to about 6% by weight, based on the weight of the entire composition.
15. 15. A composition, according to claim 1, wherein the weight: weight ratio of the polyvinyl alcohol: the fluorescent whitening agents is from about 5: 1 to about 1: 1.
16. 16. A composition, according to the claim 1, wherein the weight-to-weight ratio of the fluorescent whitening agents of the polyvinyl alcohol is from about 5: 1 to about 1: 1.
17. 17. A reusable or disposable cleaner or cushion, for cleaning a surface, this cleaner or cushion has absorbed therein, or has adsorbed thereon, an aqueous surface cleaning composition, comprising water and, in weight percent, base in the weight of the entire composition: a) from about 0.1 to about 20% soluble polyvinyl alcohol (PVOH), with an average molecular weight between about 5,000 and 200,000, and a hydrolysis level between about 70 to about 100%; b) from about 0.01% to about 10% of at least one compound selected from the group consisting of fluorescent whitening agents; and c) from about 0.001% to about 10% of at least one compound selected from the group consisting of surfactants; wherein the weight ratio, -weight of a) to b) is between about 20: 1 to about 1:10, and the pH of the composition is between about 1 to about 11.
18. 18. A cleaner or cushion, according to claim 17, which comprises cellulosic, polyolefin fibers, woven and unwoven.
19. 19. A cleaner or cushion, according to claim 17, which nonwoven, cellulosic or polyolefin fibers.
20. 20. A concentrate of a cleaning composition, which comprises by weight, based on the weight of the concentrate: a) about 0.25 to about 50% of soluble polyvinyl alcohol (PVOH), with an average molecular weight between about 5,000 and 200,000, and a hydrolysis level between about 70 to about 100%; b) about 0.025% to about 25% of at least one compound selected from the group consisting of fluorescent whitening agents; and c) about 0.0025% to about 10% of at least one compound selected from the group consisting of surfactants; wherein the ratio by weight: weight of a) to b) is between about 20: 1 to about 1:10. 21, A method for preparing a reusable or disposable cleanser or cushion, useful for providing an enhanced bleaching or brightening effect to a surface, said method comprising impregnating or applying to a cleanser or cushion, an aqueous cleansing composition, in accordance with Claim 1