CZ351498A3 - Cleansing mixtures - Google Patents

Abstract

A cleaning composition which provides effective cleaning and shine performance, said composition comprising a surfactant system comprising an alkyl sulphate and a betaine or sulphobetaine surfactant in a weight ratio of alkyl sulphate to betaine or sulphobetaine of 5.5:1 to 100:1, and wherein the pH of the composition is of at least 4. Preferably, the composition comprises a solvent for enhanced cleaning and shine performance of the composition.

Description

(57)

A cleaning composition that provides effective cleaning and an appropriate gloss, said composition comprising a surfactant system comprising an alkyl sulfate and a betaine or sulfobetaine surfactant in a weight ratio of 5.5: 1 to 100: 1 and wherein the pH of the composition is at least 4. Preferably mixture solvent for enhanced cleaning and polishing effect of the mixture.

CZ 3514-98 A3

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9 9 · · · · ··· · ·

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Cleaning mixtures

Technical field

The present invention relates to a cleaning composition that provides effective cleaning and shiny appearance of surfaces, especially hard surfaces.

BACKGROUND OF THE INVENTION

The composition of compositions that provide clean shiny surfaces is a problem known in the art to those developing the respective cleaning composition. In particular, the problem of providing shiny surfaces is often jeopardized by remnants of mixtures left on said surfaces and appearing as irregular streaks or streaks upon completion of water evaporation. The problem of this residuality is even more noticeable where the composition is used to clean surfaces made of glossy materials such as glossy ceramic tiles, windows and mirrors, or such materials as polyurethane coated PVC, which is widely used in North America. In addition, many products are now compounded or can be used as rinse-free products. In such conditions or with such products, the problem of residualness has become even more acute.

Therefore, there is a need for a composition that provides efficient cleaning performance, but also provides clean, gloss-free surfaces without any residue.

Numerous solutions have been proposed in the art to address this need, including the use of acid, magnesium ions or the use of certain solvents, as described in WO 95/21229, EP 0 639 833 or US 3,839.234.

SUMMARY OF THE INVENTION

The Applicant has now surprisingly found that this need would be met by formulating a composition comprising surfactants of sulfobetaine alkyl sulfates in specific proportions and wherein the pH given could also be the active system and the betaine or composition is at least

This finding is particularly surprising since, when using a surfactant of alkyl sulfates, it has been found that

9

99 »9 9 4» 9 9 9 99 ·· crystals, resulting in speckled residue on the surface to be cleaned; whereas on the other hand, the use of a betaine or sulfobetaine surfactant, also an effective cleaning component, leaves amorphous residues resulting in a greasy film on the surface. Surprisingly, the use of a mixture of alkyl sulfate and betaine or sulfobetaine surfactants in specific proportions not only provides effective cleaning of the surfaces, but also causes said residues to appear less or even no longer occur. The applicant further found that the addition of solvents to this surfactant system provides an enhanced cleaning and gloss effect.

It is therefore an advantage of the present invention to provide a composition that provides effective cleaning and shiny appearance of the surfaces.

A further advantage of the invention is to provide a composition with a useful disinfectant effect.

Yet another advantage of the present invention is that it provides a mild skin-friendly composition.

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a cleaning composition comprising a surfactant system comprising alkyl sulfate and betaine or sulfobetaine surfactants in a weight ratio of alkyl sulfate to betaine or sulfobetaine from 5.5: 1 to 100: 1 and wherein the pH of the composition is at least 4.

In a preferred embodiment of the invention, the composition comprises a solvent for improved cleaning and polishing effect of the composition.

In another preferred embodiment of the invention, the composition further comprises a peroxygen bleach to provide the composition with effective disinfectant performance.

DETAILED DESCRIPTION OF THE INVENTION

The main feature of the present invention is a surfactant system, wherein said system comprises an alkyl sulfate and a betaine or sulfobetaine surfactant in specific weight ratios of an alkyl sulfate to a betaine or sulfobetaine surfactant.

Alkyl sulfate surfactant

Alkyl sulphate surfactants to be used herein are those of formula ROSO ^ -M ^4, wherein R is alkyl containing »

flflflflflflflflflf from 6 to 24 carbon atoms, more preferably 6 to 16 and most likely 8 to 14 carbon atoms. M represents a water-soluble cation. The alkyl group may be in a straight or branched configuration and rather in a straight configuration.

Alkyl sulfate is commercially available from Rhone Pouleno under the trade name Rhodapon or from Albright & Wilson under the trade name EMPICOL. The commercial alkyl sulphate that will preferably be used herein is EMPICOL 0137 / A.

Betaine or sulfobetaine surfactant

The composition of the present invention comprises a betaine or sulfobetaine surfactant or derivatives thereof or mixtures thereof. A further advantage of the invention is the mild action effect of said betaine and / or sulfobetaine surfactants. Accordingly, the compositions herein may be particularly suitable for cleaning delicate or delicate surfaces, such as delicate laundry or surfaces in contact with food and / or children. In addition, betaine and / or sulfobetaine surfactants are also very mild in their skin effect and thus contribute to the convenience of use of the compositions of the invention by the user.

Suitable betaine / sulfobetaine surfactants to be used in the compositions of this invention are betaine / sulfobetaine, wherein the molecule contains both basic and acidic groups that form an internal salt giving the molecule both cationic and anionic hydrophilic groups over a wide pH range. Some common examples of such detergents are described in U.S. Pat. Pat. Nose. 2,082,275, 2,702,279 and 2,255,082, which are incorporated herein by reference. Preferred betaine or sulfobetaine surfactants have the formula

R2

R1 ------ (CH2) n - Y ”

AND

R 3 wherein R 1 is an alkyl radical containing from about 1 to 24 carbon atoms, preferably from 8 to 18, and more preferably from 12 to 14, wherein R 2 and R 3 contain from 1 to 3 carbon atoms, and more preferably 1 carbon atom where n is an integer a number from 1 to 10, preferably from 1 to 6, and preferably 1, Y is selected from the group consisting of carboxyl and sulfonyl radicals and wherein the sum of

44 ··

4 * · 3 ·

4 4 4

4 4 4 4 4

4 «· 44 4444 44

44

4 4 4 4

444 444

The 4 radicals R1, R2 and R3 are from about 14 to 24 carbon atoms or mixtures thereof.

Examples of particularly suitable betaine surfactants include C12-C18 alkyldimethylbetaine, such as coconut betaine, and C10-C16 alkyldimethylbetaine, such as laurylbetaine.

Coconut betaine and lauryl betaine are commercially available from Seppic, respectively. Albright & Wilson, under the trade name Amonyl 265, respectively. Empigen BB / L.

Typically, the compositions herein comprise at least 0.005% by weight of the total composition of said betaine or sulfobetaine surfactant or derivatives or mixtures thereof, more preferably from 0.01% to 10% and most preferably from 0.1% to 5%.

The weight ratios of alkyl sulfates to betaine or sulfobetaine are an important feature of the present invention. Therefore, ratios outside the range given below, such as those where the betaine or sulfobetaine surfactant is in a higher proportion, would not provide a cleaning and polishing effect, but only a cleaning effect where greasy residues still remain. On the other hand, a ratio of alkyl sulfate to betaine or sulfobetaine surfactant above 100: 1 would result in a surface showing speckled residues of the crystalline type. Thus, it is an important feature that the alkyl sulfate and the betaine or sulfobetaine surfactant be present in the mixture in a weight ratio of alkyl sulfates to betaine of 5.5: 1 to 100: 1, preferably in the range of from 10: 1 to 50: 1. For optimum cleaning and polishing, a 15: 1 to 30: 1 alkylsulfate to betaine weight ratio is most preferred.

pH

Another important feature of the invention is the pH of the composition. For example, it has been found that compositions containing the specific surfactant system mentioned above and having a pH below 4 form a precipitate in the solution. The pH of the mixture is measured at 20 ° C in a pure mixture where the mixture is an aqueous mixture, or is measured as a 1% solution in distilled water at 20 ° C where the mixture is a solid mixture. Accordingly, it is an essential feature of the invention that the pH of the composition is at least 4. Preferably, the compositions of the invention are aqueous liquid cleaning compositions. Said aqueous compositions preferably have a pH of not more than 12.0, but rather in the range of 4 to 10. The pH of the compositions may be adjusted using organic or inorganic acids or alkalinizing agents.

Additional components

The composition of the present invention may optionally include additional components such as solvents, a peroxygen bleach, chelates, and mixtures thereof.

Solvents

When used, the solvents preferably give an enhanced cleaning and polishing effect to the composition. Suitable solvents for incorporation into the compositions of the invention include propylene glycol derivatives such as n-butoxypropanol or n-butoxypropoxypropanol, water-soluble solvents CARBITOL or water-soluble solvents CELLOSOLVE. CARBITOL water-soluble solvents are compounds of the class

2- (2-alkoxyethoxy) ethanol, wherein the alkoxy group is derived from ethyl. A preferred water-soluble carbitol is also known as butylcarbitol. CELLOSOLVE are compounds of the class 2-butoxyethoxyethanol being preferred.

propyl or butyl.

2- (2-butoxyethoxy) ethanol, water-soluble solvents

2-alkoxyethoxyethanol, of which other suitable solvents are isopropyl alcohol and diols, such as 2,2,4-trimethyl-1,3-pentanediol, and are benzyl alcohol, ethanol, e.g. 2-ethyl-1,3-hexane diol, and mixtures thereof. Of these, n-butoxypropoxypropanol, butylcarbitol and mixtures thereof are preferred solvents. Of these, butylcarbitol is the most preferred solvent.

Typically, solvents will be present within the undiluted composition of the invention at a level of 0.01 to 10 wt%, preferably 3 to 7 wt%, based on the weight of the composition.

Peroxygen bleach

A further suitable additive component for use herein is a peroxygen bleach. The peroxide composition, in particular hydrogen peroxide, persulfate and the like, in the compositions of the invention preferably contributes to the disinfectant properties of said compositions. In this case, without being bound by theory, it is believed that said peroxide bleach can attack a vital function of microorganism cells, e.g., it can inhibit the accumulation of ribosome units within the cytoplasm of microorganism cells. The following peroxygen bleach such as hydrogen peroxide is a strong oxidizing agent that generates free hydroxyl radicals that attack proteins and nucleic acids. In addition, the presence of said peroxygen bleach, especially hydrogen peroxide, provides strong stain removal effects which are particularly noteworthy, for example, in washing and hard surface applications. As usual herein, a source of hydrogen peroxide refers to any compound that forms hydrogen peroxide when said compound is in contact with water. Water-soluble sources of hydrogen peroxide suitable for use in this case include percarbonates, per silicates, persulphates such as monopersulfate, perborates, and peracids such as diperoxydodecanedioic acid (DPDA), magnesium salt of perfalic acid and mixtures thereof.

A preferred peroxygen bleach is hydrogen peroxide or a water-soluble source thereof or mixtures thereof. The most preferred peroxygen bleach is hydrogen peroxide.

In addition to the peroxygen bleach, other classes of peroxides may be used as an alternative to hydrogen peroxide and its sources or in combination with hydrogen peroxide and its sources. Suitable groups include dialkyl peroxides, diacyl peroxides, preformed percarboxylic acids, organic and inorganic peroxides.

Typically, the compositions herein comprise at least 0.01% by weight of the total composition of said peroxygen bleach or mixtures thereof, preferably from 0.1 to 15% and most preferably from 1 to 10%. The following disinfection test procedure can be used to measure the disinfection properties of a mixture:

Disinfection test procedure

The disinfectant properties of the composition can be measured by the bacteria destroying the activity of the composition. The test procedure for evaluating the bactericidal activity of a mixture is described in European Standard, prEN 1276, CEN / TC 216 N 59, dated November 1995, issued by the European Commission for Standardization in Brussels. The European Standard, prEN 1276, CEN / TC 216 N 59, specifies the test procedure and requirements for minimal bacteria destroying the disinfectant composition. The test is passed if the bacterial colony forming units (cfu) are reduced from 10 ⁷ cfu (initial level) to 10 ² cfu (final level after contact with disinfectant), ie a viability reduction of 10 ⁵ is required.

Chelating agents

Chelating agents are also additional components that may be suitable in this case. Preferred chelating agents are those selected from the group of aminophosphonates. Suitable aminophosphonate compounds for use herein include aminoalkylene polyols (alkylene phosphonate), ethane-1-hydroxydiphosphonates, nitrilotrimethylene phosphonates, ethylenediaminetetramethylene phosphonates, and alkali metal diethylenetriaminepentamethylenephosphonates. The phosphonate compounds may be present either in their acidic form or as salts of different cations at some or all of their acidic functional sites. The preferred aminophosphonate chelating agent used herein is diethylene triamine pentamethylene phosphonate. This phosphonate chelating agent is commercially available from Monsant under the trade name DEQUEST.

Said chelating agents, in particular phosphonate chelating agents such as diethylenetriaminepentamethylene phosphonates, are particularly preferred in the compositions of the present invention as they have been found to further contribute to the disinfecting properties of hydrogen peroxide.

Typically, the compositions of the present invention contain up to 5 wt% based on the weight of the entire chelating agent composition or mixtures thereof, preferably from 0.002 to 3 wt% and more preferably from 0.002 to 1.5 wt% of the composition.

Optional compounds

Said compositions may further comprise a variety of other optional compounds including antimicrobial compounds such as Eugenol, which is commercially available from, for example, Sigma, Systems - Bioindustries (SBI) - Manheimer Inc, various components, buffers, bactericides, enzymes, hydrotropes. substances, dyes, stabilizers, bleach activators, soil suspensions, dye transfer agents, brighteners, perfumes, anti-dusting agents, dispersants, dye transfer inhibitors, pigments and dyes or dyes.

Formation of mixtures

The compositions of the invention may be formulated either as solids or liquids. In the case where the compositions are formulated as solids, the compositions will be mixed with an appropriate solvent, typically water, before use. In liquid form, the compositions are preferably, but not necessarily, prepared as aqueous compositions. Liquid mixtures are preferred in this case for the convenience of their use.

Packaging form of mixtures

Said compositions may be packaged in various suitable packages known to those skilled in the art. Liquid compositions may be packaged, as desired, in manually operated spray dispensing containers, which are typically made of synthetic organic polymeric plastic materials. Accordingly, the present invention also encompasses liquid cleaning compositions of the invention packaged in a spray dispenser, preferably a trigger spray dispenser. Certainly, the spray-type dispensers allow uniform application of liquid cleaning compositions suitable for use in the present invention to a relatively large area of the surface to be cleaned; this contributes to the cleaning properties of said compositions. These spray type dispensers are particularly suitable for cleaning vertical surfaces. Suitable spray type dispensers that are used in accordance with the present invention include manually operated trigger type foam dispensers sold, for example, by Specialty Packaging Products, Inc. or Continental Sprayers, Inc. These types of dispensers are disclosed, for example, in US-4,701,311 (Dunnining et al.) And US-4,646,973 and US-4,538,745 (both Focaracci). Particularly preferred for use herein are spray type dispensers, such as the T 8500, commercially available from Continental Spray International, or the T 8100, commercially available from Canyon, Northern Ireland. In such a dispenser, the liquid mixture is divided into fine liquid droplets resulting from the spray directed to the surface to be treated. Indeed, in the spray-type dispenser, the mixture contained in the body of said dispenser is directed by the head of the spray-type dispenser by the energy transmitted to the pumping mechanism by the user who activates said pumping mechanism. In addition, in said spray-type dispenser head, the composition is pushed against an obstacle such as a grid or cone or something similar, thereby causing impacts or shocks that help to spray (spray) the liquid composition, i.e., to help form liquid droplets.

The compositions of the invention may also be formulated as wipes. Wipes herein are disposable paper towels containing the liquid composition of the present invention. Therefore, the invention also includes wipes, eg, disposable paper towels containing the liquid composition of the invention. In a preferred embodiment, said wipes are impregnated, preferably moistened with said liquid compositions. Preferably, the wipes are packaged in a plastic box. The advantage of this embodiment is the faster use of the cleaning composition by the user, even outside the house, i.e. it is not necessary to pour the liquid compositions of the invention onto the surfaces to be treated and dry them with the appropriate fabric. In other words, the wipes allow surface cleaning in one step.

The present invention encompasses a surface cleaning process wherein the respective composition of the invention is applied to said surfaces.

By surface is meant here any surface including hard surfaces such as bathrooms, kitchens, floors, table tops, refrigerators, walls, tiles or tiles, wash surfaces and the like.

In the surface cleaning process of the present invention, said compositions may be applied to a given surface to be disinfected in its pure or diluted form.

By dilute form is meant herein that the compositions to be used herein in the purification process, whether in liquid or solid form, can be diluted by the user typically up to 1000 times their weight with water, preferably 300 times, preferably to 80 times. - up to 30 times their weight with water, and preferably up to 60-40 times.

In a preferred embodiment of the process of the invention, wherein said composition is applied to a cleaned surface, such as a hard surface, in its diluted form, it is not necessary to rinse said surface after application of said composition; there is actually no visible residue on the surface.

The invention is illustrated by the following non-limiting examples, in which all percentages are by weight unless otherwise indicated.

The following test methods used to measure the cleaning and polishing performance are given below:

Cleaning test procedure

Standard enamel plates were dirty or smeared with grease or particles and then burned with them. The test mixtures were then applied to a cleaning sponge and then placed on a Gardner machine. The Gardner machine measured the number of strokes or shocks needed to reach 95-99% clean plates. Performance was measured as such (i.e., undiluted) and diluted to a 1.5% aqueous solution.

Gloss test procedure

Five millimeters of the test product are applied to one surface of the moistened sponge. The moistened sponge is then applied in one movement with the same pressure from top to bottom on a black tile (tile) previously cleaned with isopropyl alcohol. The applied product tile is dried for 10 minutes before being classified by qualified experts. The control test is performed by repeating said test with a moistened sponge but without the test product.

Qualified expert services were also used to evaluate the specific surface area of the deposited product regarding the amount of film applied and the strips. Each product is assigned a numerical value ·· ·· describing the amount of film / strips applied. A 0-4 scale is used for the test results.

= there is no difference between the test product and the control experiment, ie poor performance of the test product regarding the amount of film / strips.

= there is a clear difference between the product and the control experiment, ie no film / strips are formed with the product tested.

In the examples, abbreviated component identifications have the following meanings:

alkyl sulfate: Empicol 0137 / A betaine: coconut alkyldimethyl betaine available from the company

Albright & Wilson under the trade name Empigen BB / L butylcarbitol: 2- (2-butoxyethoxy) ethanol

Example 1

The following mixture, according to the present invention, was formed by mixing said ingredients in said proportions:

AND (B) C E Alkylsulfate 1 1 1 1 Betaine 0.05 0.05 0.05 0.05 Butylcarbitol - 5 - 5 Hydrogen peroxide - - 2 2 Water and by - products up to 100 H ₂ SO ₄ until pH 4

Example 2

The following mixtures are in accordance with the invention:

F G H AND Alkylsulfate 1 2 8 5 Betaine 0.05 0.1 0.5 0.2 Butylcarbitol - 5 - 5 Hydrogen peroxide - - 1 2 Water and secondary ingredients up to 100 H ₂ SO ₄ to to pH 5

J TO L M Alkylsulfate 1 2 8 5 Betaine 0.05 0.1 0.5 0.2 Butylcarbitol - 5 - 5 Hydrogen peroxide - - 1 2 Water and secondary ingredients up to 100 H2SO4 to to pH 9

• · · ·

Claims (14)

PATENT CLAIMS A cleaning composition comprising a surfactant system comprising, an alkyl sulfate and a betaine or sulfobetaine surfactant in a weight ratio of alkyl sulfates to betaine or sulfobetaine in the range of 5.5: 1 to 100: 1 and wherein the pH of the composition is at least 4. The cleaning composition of claim 1, wherein said ratio of alkyl sulfates to betaine or sulfobetaine is 10: 1 to 50: 1, preferably 15: 1 to 30: 1. The cleaning composition according to one of claims 1 or 2, wherein said alkyl sulfate is of the formula ROSO 3 -M ⁺ , wherein R is an alkyl group containing from 6 to 24 carbon atoms, preferably 6 to 16, and preferably 8 to 14 carbon atoms, and wherein M represents a water-soluble cation. The cleaning composition of any one of claims 1-3, wherein said betaine or sulfobetaine surfactant is of the formula R2 R1 ⁺ --- N (CH2) n --- Y ^- R 3 wherein R 1 is an alkyl radical containing from about 1 to 24 carbon atoms, more preferably from 8 to 18, and most preferably from 12 to 14, wherein R 2 and R 3 contain from 1 to 3 carbon atoms and preferably 1 carbon atom, where n is an integer from 1 to 10, preferably 1 to 6, and more preferably 1, Y is selected from the group consisting of carboxyl and sulfonyl radicals, and wherein the sum of the radicals R1, R2 and R3 is from about 14 to 24 carbon atoms, or mixtures thereof. The cleaning composition of any one of claims 1-4, wherein said composition further comprises a solvent. The cleaning composition of claim 5, wherein said solvent is selected from propylene glycol derivatives, class 2- (2-alkoxyethoxy) ethanol, class 2-alkoxyethoxyethanol, benzyl alcohol, ethanol, isopropyl alcohol, diols mixtures thereof, but more preferably propylene glycol derivatives and class 2 - (2-alkoxyethoxy) ethanol. The cleaning composition of any one of claims 1-6, wherein said composition further comprises a peroxygen bleach. A wipe comprising a cleaning composition according to any one of claims 1-7. The cleaning composition of any one of claims 1-7, wherein said composition is packaged in a spray dispenser, preferably a trigger spray dispenser. 0 0 0 0 0 0 • 00 00 00 0 0 0 • 0 0 • 0 0 · A method for cleaning a surface by applying a composition as defined in any one of claims 1-7 to said surface. The surface cleaning process according to claim 8, wherein said mixture is diluted up to 100 times its weight with water, preferably up to 300 times, more preferably 80 to 40 times its weight with water, and most preferably 60 to 30 times before it is applied to said surface. The method of claim 11, wherein said surface is not rinsed after application of said mixture. Use of an alkyl sulfate and betaine or sulfobetaine surfactant system in a cleaning composition to clean and provide gloss to surfaces cleaned by said composition. Use of a solvent in a cleaning composition as defined in any one of claims 1-7 to clean and provide gloss to surfaces cleaned by said composition.