ES2222475T3 - CLEANING COMPOSITIONS. - Google Patents

Abstract

There is provided a low-foaming cleaning composition comprising a hypochlorite bleaching component, a hypochlorite compatible surfactant, and a capped nonionic ethoxylated surfactant, wherein said nonionic surfactant reduces the foaming due to said hypochlorite compatible surfactants.

Description

Cleaning compositions

Field of the Invention

The present invention relates to compositions cleaning agents, especially cleaning compositions that have Easy rinsing properties.

Background of the invention

The hypochlorite-based components are known in the art as strong oxidants that favor chemical degradation, decomposition, stain removal and dirt and as effective disinfectants. This double role of hypochlorite has contributed to the greater use of this component in the formulation of cleaning compositions.

It is also known that compatible surfactants with hypochlorite, such as amine oxide and / or sulfate-type anionic surfactants contribute to the power cleaner of the cleaning compositions. However a problem that appears with the use of the surfactant mentioned in the cleaning compositions is the foaming property of the surfactants, which makes the rinsing stage difficult.

U.S. Pat. A-4,836,951 refers to dishwasher formulations comprising a random copolyether foam controller and possibly others surfactants and compounds that release hypochlorites during washing process.

Therefore, the formulator of a composition cleaner faces the challenge of formulating a composition cleaner that has low formation properties of foam.

The applicant has discovered, surprisingly, that the use of a combination of a non-ionic surfactant ethoxylated terminally protected with a fatty acid or with mixtures thereof in a liquid cleaning composition comprising a bleaching component based on hypochlorite and surfactants compatible with hypochlorite, satisfies this need. Such Nonionic surfactants are known as low surfactants foaming power, although the applicant has found that its use It also reduces foaming due to other surfactants compatible with hypochlorite.

Summary of the invention

The present invention is a composition liquid cleaner comprising:

to)-

a bleaching component based on hypochlorite;

b) -

a surfactant compatible with hypochlorite;

C)-

a non-ionic surfactant with the formula: R 1 (OR 2) n OR 3, where R 1 is a linear C 8 -C 18 alkyl or alkenyl group or branched, an aryl group, a alkylaryl group, R2 is a linear or branched C2-C10 alkyl group, R 3 is a C 1 alkyl group and n is an integer within from the range of 1 to 20; Y

d) -

a fatty acid or mixtures thereof.

In another aspect of the invention, the use of the aforementioned non-ionic surfactants in a composition liquid cleaner comprising a bleaching component based in hypochlorite, a fatty acid component and one or more surfactants compatible with hypochlorite in order to reduce the foam produced by the aforementioned compatible surfactants with hypochlorite when using the cleaning composition.

Detailed description of the invention Bleaching component based on hypochlorite

A fundamental component of the invention is a bleaching component based on hypochlorite. A component highly preferred hypochlorite based bleach is a hypochlorite alkali metal Advantageously, the compositions of the Invention are stable in the presence of this bleaching component. Although hypochlorites are preferred in the present invention. alkali metal, other compounds of hypochlorite that can be selected among the hypochlorites of calcium and magnesium A preferred alkali metal hypochlorite for its use in the present invention is sodium hypochlorite. The compositions according to the present invention comprise said bleaching component based on hypochlorite so that the Active chlorine content in the compositions is preferably from 0.1% to 5% and more preferably from 1% to 2% by weight.

Surfactants compatible with hypochlorite

The other fundamental component for the purpose of the invention is a surfactant compatible with hypochlorite. Surfactants compatible with hypochlorite are surfactants that do not contain functional groups (such as unsaturation, some aromatic structures or hydroxyl groups) susceptible to be oxidized by hypochlorite-based bleach. Other property of these hypochlorite compatible surfactants is Foaming. All surfactants compatible with the hypochlorite have the usual structure of a surfactant, it is that is, they comprise a hydrophobic fraction and a fraction hydrophilic

The surfactant compatible with hypochlorite Use in the present invention can be of various types, including the anionic, zwitterionic (hybrid ion) and amphoteric.

Among the anionic surfactants suitable for the purpose of the invention include alkyl sulfates (RSO4), alkyl ether sulfates (R (OCH2CH2) eSO4), alkylsulfonates (RSO 3), alkylsuccinates (ROOCCH 2 CH 2 COOZ), alkyl carboxylates (RCOOM) and alkyl ether carboxylates (R (OCH 2 CH 2) e COOM). In the formula between parenthesis, R is a hydrophobic alkyl or alkenyl chain (C_ {6} -C_ {22}), e is a value from 0 to 20, Z is M or R ', M is H or any counterion as known in the technique, including Na, K, Li, NH4, amine, and R 'is a group C 1 -C 5 alkyl, possibly with groups hydroxyl functional, preferably C 1 -C 3 and more preferably methyl. Between the preferred anionic surfactants described above are alkyl sulfate type surfactants. The use alkyl sulfates preferred in the present invention are selected from tallow sodium alkyl sulfate, sodium lauryl sulfate, sodium octyl sulfate and mixtures thereof. Commercially available compounds Preferred are Empicol® 0298 / F and / or Empimin® LV33 from Albright and Wilson

Among zwitterionic surfactants (ion suitable hybrid) betaine type surfactants or sulfobetaine, in which the molecule contains basic groups and acids that form an inner salt, providing the molecule cationic and anionic hydrophilic groups over a wide range of pH values Some common examples of these detergents are described in US Pat. UU. 2,082,275, 2,702,279 and 2,255,082. Preferred surfactants of the betaine type or Sulfobetaine have the formula:

\melm{\delm{\para}{R3}}{N}{\uelm{\para}{R2}}

^{+} - - - (CH2)n - - - Y^{-}R1 - - - -

 \ melm {\ delm {\ para} {R3}} {N} {\ uelm {\ para} {R2}} 

+ - - - (CH2) n - - - Y -

in which R_ {1} is a radical alkyl containing about 1 to 24 carbon atoms, preferably from 8 to 18 and more preferably from 12 to 14, where   R 2 and R 3 contain 1 to 3 carbon atoms, and preferably 1 carbon atom, where n is an integer from 1 to 10, preferably from 1 to 6 and more preferably is 1, Y is selected from the group consisting of carboxyl radicals and sulfonyl and wherein the sum of the radicals R 1, R 2 and R 3 is approximately 14 to 24 carbon atoms, or mixtures thereof. Among the examples of betaine surfactants particularly suitable is included the (C 12 -C 18) alkyl-dimethyl betaine, like coconut betaine, and the (C 10 -C 16) alkyl dimethyl betaine, like lauryl betaine. Coconut betaine and lauryl betaine are marketed by Seppic and Albright & Wilson, respectively, under the trademarks Amonyl 265® and Empigen BB / L®, respectively.

Among suitable amphoteric surfactants are find the amine oxides of the formula:

R \ R '\ R' '\ N \ rightarrow OR

in which R is an alkyl group primary containing 6-24 carbons and preferably 10-18 carbons, and in which R 'and R' ' they are, each independently of each other, an alkyl group that It contains 1 to 6 carbon atoms. The arrow in the formula is a conventional representation of a semipolar link. The oxides of Preferred amines are those in which the primary alkyl group it has a linear chain in at least most of the molecules, usually at least 70% and preferably at least one 90% of the molecule, and especially preferred amine oxides are those in which R contains 10-18 carbons and R 'and R' 'are both methyl. Examples of preferred amine oxides they are N-hexyldimethylamine oxide, the oxide of N-octyldimethylamine oxide N-decyldimethylamine oxide N-dodecyl dimethylamine oxide N-tetradecyldimethylamine oxide N-hexadecyl dimethylamine oxide N-octadecyldimethylamine oxide N-eicosyldimethylamine oxide N-docosyldimethylamine oxide N-tetracosyl dimethylamine, amine oxides corresponding, in which one or both methyl groups are substituted with ethyl or 2-hydroxyethyl groups, and mixtures thereof. The most preferred amine oxide for use in the present invention is the oxide of N-decyldimethylamine.

Other amphoteric surfactants suitable for purpose of the invention are phosphine type surfactants or sulfoxide of the formula:

R \ R '\ R' '\  A \ rightarrow OR

where A is a phosphorus or sulfur atom, R is a primary alkyl group containing 6-24 carbons and preferably 10-18 carbons, and where R 'and R''are each independently selected from each other, from methyl, ethyl Y
2-hydroxyethyl. The arrow in the formula is a conventional representation of a semipolar bond.

The compositions according to the present invention may include any of the surfactants listed above of isolated form or any combination thereof, depending of the intended end use.

A preferred combination of surfactants is the combination of a short chain surfactant and a surfactant of long chain, these surfactants comprising a fraction hydrophobic and a hydrophilic fraction, where the chain length of the hydrophobic fraction of the short chain surfactant is of C 6 to C 9 and the chain length of the hydrophobic fraction of the long chain surfactant is from C 10 to C 20.

Preferred surfactants among those described above are the alkyl sulfate surfactants and / or the amine oxide type surfactants.

The compositions according to the present invention preferably comprise from 0.1% to 20%, more preferably from 0.3% to 10%, and most preferably 0.5 to 5% by weight of the composition of the surfactants compatible with hypochlorite.

Nonionic Surfactant

Another fundamental component for the purpose of the invention is a protected ethoxylated nonionic surfactant terminally, of formula:

R_ {1} (OR2) n OR3

wherein R 1 is an alkyl group or linear or branched C 8 -C 18 alkenyl, a aryl group, an alkylaryl group, preferably, R1 is a C 10 -C 15 alkyl or alkenyl group, more preferably an alkyl group C 10 -C 15;

R2 is an alkyl or alkenyl group C 2 -C 10 linear or branched, preferably a C4 group;

R 3 is a C 1 alkyl group, and

n is an integer from 1 to 20, preferably from 1 to 10 and more preferably from 1 to 5;

or mixtures thereof.

These surfactants are obtainable in the market from BASF with the Plurafac® brand, from HOECHST with the Genapol® brand or from ICI with the Symperonic® brand. The terminal protected ethoxylated nonionic surfactants, Preferred from the above formulas, are obtainable in the market under the Genapol® L 2.5 NR brand, from Hoechst, and Symperonic® LF / CS 1100, of ICI.

The compositions according to the present invention preferably comprise from 0.01% to 25%, more preferably from 0.05% to 10% and most preferably 0.1% to 2% by weight of the Composition of the non-ionic surfactants mentioned.

Surprisingly, the applicant has discovered that the present nonionic surfactant performs a double function when incorporated into the composition herein invention, said functions consisting not only in presenting low foaming, but also in reducing the formation foam surfactants compatible with hypochlorite.

The other advantage of the invention is that this nonionic surfactant is stable in the presence of a component bleach based on hypochlorite.

The compositions according to the present invention they can comprise various optional ingredients such as the Polycarboxylate polymer component, inactivators radicals, antimicrobial compounds, enhancers of detergency, chelators, buffers, bactericides, solvents, enzymes, hydrotropes, dyes, bleach activator, stain suspensions, dye transfer agents, brighteners, anti-dust agents, dispersants, inhibitors of transfer of dyes, pigments, perfumes and dyes.

The composition of the present invention It also comprises a fatty acid or mixtures thereof. Preferably, the fatty acid is an alkali metal salt of a C 8 -C 18 fatty acid. Such fatty acids They are used as foam suppressors and provide so advantageous an additional reduction of the foam that could follow producing surfactants compatible with hypochlorite. The fatty acids therefore increase the rate of collapse of the foam generated by the surfactants compatible with the hypochlorite As a result, a reduction in the foam generation as well as an increase in the speed of collapse. Fatty acids suitable for use according to the present invention can be any fatty acid C 8 -C 18, preferably fully saturated, preferably a sodium, potassium or lithium salt and more preferably the sodium salt. Suitable fatty acids can be selected from caprylic acid, capric acid, acid lauric, myristic acid, palmitic acid, stearic acid and mixtures of fatty acids, conveniently hydrogenated, derivatives of natural products such as tallow, coconut oil, oil of peanuts and babassu oil. The compositions according to the present invention may comprise from 0.1% to 10%, preferably from 0.1% at 4% and more preferably less than 0.6% by weight of the composition of fatty acids.

Optional components

Another suitable optional component when desired thickening the composition is a polymer component of polycarboxylate Preferably, the polymer component is a crosslinked polyacrylate polymer. Advantageously, the use of Additional component mentioned will also provide a reduction of the bad smell of the bleach in the product and also in the surfaces cleaned and in the hands cleared after contact with the product. Among the commercial polymers of polyacrylate type there are those that are sold with the commercial names of Carbopol®, Acrysol® ICS-1, Polygel® and Sokalan®. When said polycarboxylate component is present in the compositions according to the present invention, their presence represents from 0.1% to 4% by weight and preferably from 0.4% to 1.5% by weight of the composition.

An optional requirement of the compositions according to the present invention is that the pH is greater than 10, preferably greater than 11 and more preferably greater than 12. This is achieved by adding 0.4% to 2% of a caustic alkali. Among the caustic alkalis suitable for use according to the present Invention are sodium and potassium hydroxide. The compositions according to the present invention comprising hypochlorite preferably have a pH greater than 12 to confer hypochlorite stability.

The compositions according to the present invention They are in liquid form and are preferably aqueous. Preferably, the liquid compositions of the invention comprise from 80% to 95%, more preferably from 85% to 90%, by weight of water.

The compositions according to the present invention are prepared by methods well known in the art, such as the methods described in patent GB 1 329 086 except as relative to the polymer that, if used, is predispersed in an acidic water solution of pH 3 and then neutralized to pH 7 before you start adding the other components. The compositions according to the present invention can be prepared by mixing all the ingredients in a non-metallic device at room temperature or in Hot water. The fatty acid melts before adding it to the mixture. Other ingredients are added during stirring. optional such as perfume and metal hypochlorite alkaline. The dyes, if present, are added once mixed the other ingredients.

The compositions of the present invention may be used for various cleaning purposes such as Rigid surface cleaning, in which the thickened nature of said compositions provides greater adhesion to the surface than non-thickened compositions. Per surface rigid is understood in the present invention every surface of sanitary or bathroom facilities such as batteries, showers, sinks and toilets, and kitchens as sinks, stoves, countertops, refrigerators, walls, windows, etc.

Form of packaging of the compositions

The compositions of the present invention may be packaged in different types of suitable detergent containers known to the person skilled in the art. Liquid compositions according to the present invention can preferably be packaged in actuator spray dispenser containers manual that are usually manufactured with plastic materials to base of synthetic organic polymers.

Accordingly, the present invention is also refers to liquid cleaning compositions according to the invention packaged in a spray type dispenser, preferably in a spray type dispenser with trigger. Indeed, said spray type dispensers allow to apply uniformly the cleaning compositions liquids suitable for use according to the present invention on a relatively wide surface that you want to clean, enhancing thus the cleaning properties of said compositions. These spray type dispensers are especially suitable for cleaning vertical surfaces.

Between the spray type dispensers for used according to the present invention dispensers are included Foam type manual-acting trigger marketed, by example, by Specialty Packaging Products, Inc. or Continental Sprayers, Inc. These types of dispensers have been described, for example, in US Pat. UU. 4,701,311 granted to Dunnining et al. and in U.S. Pat. UU. 4,646,973 and 4,538,745, both granted to Focarracci. Especially preferred for use in the present invention are spray dispensers such as T 8500®, on the market for Continental Spray International, or T 8100®, on the market in Canyon, Ireland North. In a dispenser of these characteristics, the composition liquid, divided into tiny drops of liquid to form a fog, is directed on the surface to be treated. In a dispenser of the spray type of this type, the composition contained in the body of said dispenser is sent through the head of the Spray type dispenser for energy effect transferred by the user to a pumping mechanism when said user drives said pumping mechanism. More particularly, in said sprayer type dispenser head, the composition it is forced against an obstacle such as a grid, cone or similar, that generates shocks to favor the atomized of the liquid composition, that is, to contribute to the formation of Tiny drops of liquid.

The present invention also relates to a method to clean a rigid surface by applying thereon of an effective amount of the composition of the invention. Said composition may be applied in its net form or after being diluted with water. Preferably said composition Dilute up to 200 times its weight in water, preferably 50 to 150 times its weight in water and more preferably 75 to 95 times its weight in water, before being applied on the surface in question. Although the composition is diluted before use (to reach a total active level of approximately 1.2%), will continue advantageously providing an effective cleaning power. In the preferred embodiment of the method according to the present invention, wherein said composition is applied in diluted form on the rigid surface that you want to clean, may not be necessary Rinse the surface after applying the composition.

Reduction of foam produced by compatible surfactants with the hypochlorite

The benefit provided herein invention is that the foam produced by the surfactants compatible with hypochlorite, that is, the use of a composition comprising surfactants compatible with the hypochlorite, a fatty acid and an ethoxylated nonionic surfactant terminal protected, as described above, It has a lower generation of foam compared to its use composition but without ethoxylated nonionic surfactant terminal protected.

Therefore, the present invention is also refers to the use of said nonionic surfactant in a composition cleanser comprising a fatty acid, a bleaching component based on hypochlorite and one or more surfactants compatible with the hypochlorite, to reduce the amount of foam produced by said surfactants compatible with hypochlorite during use of the cleaning composition.

Test method for the evaluation of the reduction of foam generation

The foam reduction can be measured by comparing the height of the foam produced by each composition using the following method:

5ml of the test product is applied to one side of a dry sponge and then said surface is moistened with 10ml of water. The moistened sponge is squeezed ten times over a test tube The collected foam is measured. The differences of \ pm 5mm are not significant.

Claims (7)

1. A liquid cleaning composition that understands: a) - a bleaching component based on hypochlorite; b) - a surfactant compatible with the hypochlorite; c) - a non-ionic surfactant of the formula: R 1 (OR 2) n OR 3, where R 1 is a linear C 8 -C 18 alkyl or alkenyl group or branched, an aryl group, a alkylaryl group, R2 is a linear or branched C2-C10 alkyl group, R 3 is a C 1 alkyl group and n is an integer from 1 to twenty; Y d) - a fatty acid or mixtures thereof. 2. A cleaning composition according to claim 1, wherein said nonionic surfactant is present in an amount of 0.01% to 25%, preferably 0.05% to 10% by weight of the composition. 3. A cleaning composition according to claims 1 or 2, wherein said surfactant compatible with hypochlorite is a combination of a chain surfactant short and a long chain surfactant, said means comprising surfactants a hydrophobic fraction and a hydrophilic fraction, in where the chain length of the hydrophobic fraction of the Short chain surfactant is from C 6 to C 9 and the length chain of the hydrophobic fraction of the long chain surfactant It is from C 10 to C 20. 4. A liquid cleaning composition according to any of claims 1-3, wherein said hypochlorite compatible surfactant is present in an amount of 0.1% to 20%, preferably 0.3% to 10% by weight of the composition. 5. A cleaning composition according to any of claims 1-4, wherein said acid fatty or mixtures thereof, are present in an amount from 0.1% to 10%, preferably from 0.1% to 4% by weight of the composition. 6. A liquid composition according to any of claims 1-5, wherein said composition is packaged in a spray type dispenser, preferably in a spray type dispenser with trigger. 7. Use of a non-ionic surfactant in a liquid cleaning composition comprising a component bleach based on hypochlorite, a component of fatty acid and one or more surfactants compatible with hypochlorite, to reduce the foam produced by said surfactants compatible with the hypochlorite when the cleaning composition is used, taking said nonionic surfactant the formula: R 1 (OR 2) n OR 3, where R 1 is a C 8 -C 18 alkyl or alkenyl group, R 2 is a C 2 -C 10 alkyl group, R 3 is a C 1 alkyl group and n is an integer from 1 to twenty.