JP2005519151A - Liquid cleaning composition - Google Patents

Abstract

The present invention includes (a) treating a hard surface with a liquid cleaning composition comprising an antioxidant for scavenging radicals and hydrogen peroxide, (b) leaving the deposits of fat stains, (c) A method is provided for removing fatty soils from a hard surface comprising sequentially cleaning the surface to remove the fatty soils. The present invention also provides a hard surface liquid cleaning composition comprising an antioxidant for scavenging natural radicals, hydrogen peroxide and preferably a surfactant.

Description

  The present invention relates to a liquid cleaning composition comprising an antioxidant and a peroxide, and a method for cleaning a hard surface using these compositions.

  Cleaning the surface of household appliances contains one or more ingredients that facilitate the removal of fatty / oily / greasy soils and / or visible contamination such as adhering solid debris or colored matter. It is common to use compositions that are present. Such compositions are applied neat or as a diluting solution by dispensing or spraying from a trigger spray dispenser or another aerosol applicator, polished with a cloth or other wiping article, and optionally rinsed off thereafter. .

  Japanese Patent Publication JP-A-07 / 228,892 is a hard surface comprising anionic and amphoteric surfactants, mono- or polyhydric alcohols, and 0.1-7 wt% tea leaf extract. A cleaning composition is disclosed. Although tannin is known as a component of tea, tannic acid (antioxidant) is present in very small amounts in such extracts. Tannins are generally said to have an adverse effect on cleaning, especially on oily soils.

  The use of tea leaves or other plant leaf extracts in hard surface cleaning and / or disinfecting products is also known from JP-A-07 / 228,890 and '' 891, JP-A-08 / 104,893, JP-A-10 / 273,698, JP-A-11 / 100,596, JP-A-06 / 340,897, JP-A-63 / 196,693, JP-A-62 / 167,400, JP-A-59 / 047,300 and U.S. Pat. No. 4,220,676. However, the products disclosed in the last two patents do not contain a surfactant.

  US Pat. No. 5,965,514 discloses a weakly acidic hard surface cleaning composition containing an amine oxide surfactant, a quaternary disinfectant and a nitrogen-containing chelating agent. Ascorbic acid is described as one of many acids capable of imparting acidity, but is not included in the preferred acids. Tannic acid is described as one of many acids that can optionally be used as a surface tension reducing agent.

  Glass antifogging agents are described in Japanese Patent Publication JP-A-49 / 113,811. This comprises 3% by weight dialkyl sulfosuccinate anionic surfactant, 4% by weight higher secondary alkoxyethyl sulfate anionic surfactant, 1% by weight tannic acid and 10% by weight Contains propylene glycol, 5 wt% isopropyl alcohol, and 77 wt% water.

  US Pat. No. 5,602,090 discloses a cleaning composition containing an easily oxidizable terpene such as limonene and hydrogen peroxide. The example formulations contain 0.02% butylated hydroxyanisole as an antioxidant.

  European Patent EP209228, International Patent WO97 / 02331, European Patent EP844302, EP1069178 disclose a fabric bleaching composition comprising a surfactant, a peroxide bleaching agent such as hydrogen peroxide, and various radical scavengers. doing. Propyl gallate, butyl-hydroxyanisole and partially constrained substituted hydroxybenzene are described. Ascorbic acid and ascorbyl esters are listed as additional components. US Pat. No. 6,110,883 discloses a similar composition having a pH higher than 8. US Pat.

  US Pat. No. 6,296,880 discloses medicinal skin cleansing compositions for treating various skin abnormalities. The composition preferably contains an amount of an acidic compound such as tannic acid in an amount of at least 1%, an amount of hydrogen peroxide, and an antimicrobial agent sufficient to reduce skin microorganisms. The composition may further comprise an antioxidant.

  However, it is not disclosed anywhere in the prior art that treatment of a surface with an antioxidant can have a positive effect on the removal of oily soils subsequently adhered to the surface.

  European patent EP447553 disclosed a bleaching composition for hard surface cleaning comprising hydrogen peroxide or a precursor thereof, a peracid precursor that forms a peracid with hydrogen peroxide, and optionally a surfactant. The peracid precursor is an alkoxylated aliphatic or arylaliphatic carboxylic acid. Peracid is generated immediately prior to use of the composition by mixing hydrogen peroxide (or precursor) and peracid precursor at pH 5-13. Therefore, hydrogen peroxide and peracid precursors must be stored separately. In order to prevent premature oxidation, an antioxidant is optionally added to the peracid precursor.

  It is known that hydrogen peroxide can be used to bleach colored stains and stains on hard surfaces, but hydrogen peroxide is generally soiled from hard surfaces (whether colored or colorless). It was unexpectedly found to promote the removal of).

  Also, when certain antioxidants are present on a hard surface, the antioxidants prevent oily soils that subsequently adhere to the surface from sticking to the surface, thus preventing subsequent removal of oily soils. The surprising knowledge of making it easy was also obtained.

  More surprisingly, when hydrogen peroxide and these antioxidants are present together in one liquid cleaning composition, it is also oxidized that hydrogen peroxide interferes with the activity of the antioxidant. It has been found that the inhibitor maintains both activities independently without interfering with the activity of hydrogen peroxide. The composition is storage stable without loss of hydrogen peroxide or antioxidant activity during storage.

  Further, although consumers prefer less irritating ingredients as components of cleaning compositions, it is generally accepted that natural ingredients, and more particularly natural antioxidants, are less irritating ingredients.

Thus, according to one object, the present invention provides:
(A) treating the hard surface with a liquid cleaning composition comprising a radical scavenging antioxidant and hydrogen peroxide;
(B) leaving the deposits of fatty dirt;
(C) cleaning the surface to remove fatty soils;
The present invention provides a method for removing fatty soils from a hard surface that sequentially contains.

  A second object of the present invention is to provide a liquid cleaning composition comprising hydrogen peroxide and a natural radical scavenging antioxidant.

  The third object of the present invention is to propose the combined use of radical scavenging antioxidant and hydrogen peroxide to remove fatty soils from hard surfaces.

  Without being bound by any particular theory or explanation, the radical scavenging antioxidant is exerted by maintaining it on the surface in step (a) and as a result subsequently deposited on the surface in step (b) It is believed that the oleaginous soil does not become strong or does not polymerize, thus facilitating soil removal in step (c). Accordingly, in one embodiment of the first object of the present invention, a film comprising an antioxidant in step (a), for example by drying on the surface a solution or liquid composition comprising an antioxidant and hydrogen peroxide. Is formed. Step (c) is advantageously performed using a hard surface cleaning composition that also contains an antioxidant and hydrogen peroxide, so that the soil is removed and a new antioxidant is applied at the same time. That is, step (c) of the first method according to the first object of the present invention and step (a) of the subsequent method according to this object of the present invention are effectively merged. In some cases, step (c) may be followed by a normal water rinsing step.

  Again, without being bound by any theory or explanation, hydrogen peroxide generally facilitates soil removal, with the decomposition of hydrogen peroxide on a hard surface generally generating very small oxygen bubbles that relax the soil. This is considered to be because the dirt is removed from the surface.

  The antioxidant in the liquid composition used in the process may be any synthetic or natural antioxidant for scavenging radicals as described later in the text. Preferably, the antioxidant is a natural antioxidant. The liquid composition preferably comprises at least 0.05 wt%, more preferably 0.1-10 wt%, even more preferably at least 0.2 wt% antioxidant. In general, amounts greater than 2%, or even greater than 1% are not required, and generally less than 1% or at most 0.5% is sufficient. A mixture of antioxidants may also be used.

  The composition used in the process also comprises hydrogen peroxide, preferably in an amount of 0.1-10%, more preferably at least 1%. In general, amounts greater than 5% are not required, and amounts that are too high can damage sensitive surfaces.

  In some cases, the composition used in the method preferably contains one or more surfactants as described below. In addition, the composition may contain other optional ingredients commonly used in cleaning compositions.

  As used herein, the term “dirt” refers to any kind of organic or inorganic contamination or dirt, such as solid waste dirt and / or dirt from bacteria or other pathogens, whether visible or invisible to the naked eye. Is included. As outlined, the present invention is particularly effective for more easily removing fatty soils, and more particularly, old or seized fat soils. For example, such soils often found on the surface of a kitchen are usually oil / fat components and other soil components such as starchy and / or proteinaceous food baskets, dust, lime scales, etc. Including combinations. The present invention is also effective in removing calcareous scale, water marks and similar stains.

  The present invention also improves surface texture (eg, smoothness) during and / or after cleaning, controls acid odor, controls darkening of dirt before cleaning, controls surface corrosion, and noise during cleaning. One or more other advantages such as suppression of

  The methods, uses, compositions and other products according to the invention are for example hard surfaces of household goods, such as in kitchens and bedrooms, such as worktops, exhaust fans, work surfaces, cookware, ceramics, tiles, floors, bathtubs, It can be used to clean toilet bowls, washbasins, showers, dishwashers, faucets, sinks, and general glass and basket surfaces. These surfaces may be made of, for example, paint (eg painted wood or lacquered wood), plastic, glass, ceramic or metal (eg stainless steel or chrome).

Antioxidant Ingold K.K. V. Adv. Chem. Ser. 75 , 296-305 (1968) "Inhibition of Auto-oxidation", antioxidants are primary groups that react with lipid radicals to form more stable radicals. Categorized into agents, ie chain-breaking antioxidants, and secondary (or prophylactic) antioxidants that slow down the rate of chain initiation by various mechanisms. Antioxidants can also be classified as synthetic antioxidants or "natural", ie, antioxidants derived from natural products.

  The classes, subclasses and specific examples of antioxidants that can be used in the methods, uses, processed articles and compositions of the present invention are shown below. As used herein, the term “antioxidant” in the singular means a combination of one type of antioxidant and two or more types of antioxidants.

A. Synthetic antioxidants In general, primary antioxidants are further subdivided into chain break acceptors and chain break donors.

  Chain break acceptors (sometimes referred to as “prophylactic antioxidants”) slow the rate of oxidation by breaking down hydroperoxides into (non-radical) stable end products.

  Chain-breaking donors, also called “hydrogen-donating antioxidants or radical scavengers”, function by competing with organics for peroxy radicals.

B. Natural antioxidants Natural antioxidant compounds are particularly preferred. Natural ingredients are very popular with many consumers. Antioxidants that are considered safe to use on surfaces that may come into contact with food being cooked are particularly preferred.

  Various natural material resources that exhibit antioxidant activity have been reported, such as herbs, spices, cereals, coffee and coffee beans, oil and seeds, tea leaves and protein hydrolysates. Active compounds isolated from extracts as components exhibiting antioxidant activity include chemical classes of compounds such as tocopherols, flavonoids, phospholipids, organic acids and their derivatives, tannins, melanoidins, terpenoids, sterols, Maillard reactions There are products and amino acids. Antioxidants are water-soluble or oil-soluble depending on their structure. Both types are useful in the present invention.

  Carnosol, carnosic acid, rosmanol, rosmarinic acid, rosmariquinone and rosmaridiphenol are known as active ingredients of rosemary leaves exhibiting antioxidant activity. In addition, two major phenolic antioxidant components, gallic acid and eugenol are derived from cloves. Some of the many ingredients isolated from herbal and spice extracts such as sage, marjoram, organo and thyme are known to have potential antioxidant properties. Other natural antioxidants include β-carotene, caffeic acid, quinic acid and ferulic acid, and esters of caffeic acid and sterols (sitosterol, campesterol, glamisterol and cycloartenol). Triterpene alcohol esters of sterols and caffeic acids are not suitable. Other examples of such compounds known to exhibit potential antioxidant activity are cinnamic acid, sinapinic acid, vanillic acid, syringic acid and coumaric acid.

  Cardanol is a mixture of monohydroxylphenols with a meta (3-) 15-carbon chain in the phenolic ring. It is isolated as a distillate from cashew nut shell liquid. Anacardic acid (3-n-pentadecylsalicylic acid) is the main component (80-85%), cardanol (3-n-pentadecyl-phenol) and cardol (3-n-pentadecyl-resorcinol) and methylcardanol (2 -Methyl-5-n-pentadecyl-resorcinol) is present in small amounts. Cardol and cardanol are commercially available. Oryzanol means a group of esterified sterols that have reacted with ferulic acid (4-hydroxy-3-methoxycinnamic acid) having a high molecular weight and low volatility. Sesamol, sesaminol and sesamolino compounds are components of sesame oil and have antioxidant properties. Sesamol is easily oxidized to sesamol dimer, and further oxidized to sesamol quinone dimer.

  Tocopherol exhibits strong antioxidant activity. Under certain conditions, tocopherols can form higher molecular weight materials in oils such as dimers, trimers, and the like. Tocotrienols are a closely related class of compounds, and the structural difference is that they have unsaturated side chains instead of saturated phytyl chains. The antioxidant activity of tocotrienol is weaker than that of tocopherol.

  The flavonoid class is classified into subgroups mainly composed of flavonols, flavones, isoflavones, anthocyanins, catechins, proanthocyanidins and aurones. Related compounds include cinnamic acid and ferulic acid and their esters. Some of these are flavonoid precursors. Tea leaves are an abundant and readily available flavonoid (mainly catechin) resource. When flavonoids are oxidized, they form polymers with complex polyphenolic structures that themselves exhibit antioxidant activity. Epigallocatechin gallate can be extracted from tea leaves together with ascorbic acid, tocopherol, citric acid and tartaric acid.

  Rutin and chlorogenic acid also exhibit antioxidant activity and have a sugar moiety attached to an aromatic functional group. This type of compound is particularly important because it can partition between the aqueous phase and the organic (lipid) phase.

  Another group of natural antioxidants are tannins, tannic acid and related compounds. This is a large group of plant-derived polyphenol compounds. The characteristic of tannin is that it has the ability to precipitate proteins.

Antioxidant Structure Preferred antioxidants suitable for the purposes of the present invention include 1,2-dihydroxybenzene or 1,4-dihydroxybenzene substructure or derivatives thereof in which one OH H is replaced by an organic group. Is a natural antioxidant. The organic group may be -R or -COR, where R is preferably a (substituted) alkyl group, an alkenyl group, a carbocyclic group or a heterocyclic group.

  Suitable examples of compounds having a substructure of 1,2-dihydroxybenzene (derivatives) are caffeic acid, ferulic acid, rosmarinic acid and vanillic acid and their amides, esters, salts and similar derivatives, and sesamol And its derivatives. Suitable examples of compounds having a substructure of 1,4-dihydroxybenzene derivatives are tocopherols and tocotrienols, in which a part of the benzene ring and one of the phenol oxygens together form a condensed heterocyclic ring. Forming part.

  A very useful specific subclass of compounds having a 1,2-dihydroxybenzene substructure is formed from compounds having a 3,4,5-trihydroxybenzoyl structure or substituted derivatives thereof. That is, gallic acid and its natural derivatives are suitable. Tannic acid and tannin are particularly suitable. Tannic acid and tannin contain a plurality of 3,4,5-trihydroxybenzoyl structural units, and the benzoyl group of one structural unit forms an ester bond with the phenol oxygen of the next structural unit.

Tannic acid is the most preferred antioxidant for the purposes of the present invention. Tannic acid is sometimes referred to as gallotannic acid or penta- (m-digaloyl) -glucose (C ₇₆ H ₅₂ O ₄₆ ). However, commercially available tannic acid is usually obtained from plants or gallic, bark and other plant parts. It should be understood that the term “tannic acid” as used herein encompasses all such materials. As already mentioned, tea tannin-containing extracts (such as those used in the composition of JP-A-07 / 228,892) have a very low tannic acid content.

  Another preferred group of antioxidants is tocopherols, especially δ-tocopherol.

The liquid composition composition can be applied to the surface in an undiluted or diluted form. Suitable liquid compositions are solutions, dispersions or emulsions of antioxidant materials in solvents. The solvent is preferably water or a mixture of an organic solvent and water.

  Preferred compositions have a neutral or slightly acidic pH, i.e. 7 or less, preferably 6 or less, in particular 5.5 or less or 4.5 or less. However, it is preferred that the composition not be too acidic to avoid damaging the acid sensitive surface. Preferably the pH is at least 1.5 or 2, more preferably at least 2.5. Most preferably, the pH is in the range of 3-4.5.

The liquid composition may be in the form of a thin or viscous liquid or gel, and may be in the form of a foam, mousse or paste. The liquid is viscous or has a viscosity of at least 100 mPas, preferably at least 150 or 200 mPas as measured at a shear rate of 21 s ⁻¹ (Brookfield viscometer, 20 ° C.), but preferably 5,000 mPas. Hereinafter, a gel-like liquid having a viscosity of 2,000 mPas or less is more preferable. Shear thinning liquids or gels enhance the pleasant sensory effect of antioxidants during hard surface cleaning and are particularly popular with consumers and are therefore a preferred embodiment of the present invention. Viscosity is provided by an “internal structuring system” that uses one or more surfactants, water, and (usually) an electrolyte, resulting in an ordered or liquid crystalline phase within the composition. Alternatively or additionally, a thickening polymer may be added. A number of such polymers are known in the art, such as poly (meth) acrylates, polycarboxylate type polymers such as polymaleic acid, (meth) acrylic acid and / or maleic anhydride and various other vinyls. Copolymers with monomers, polysaccharides such as cellulose derivatives, or vegetable or microbial gums such as xanthan gum, guar gum and the like. Of course, the thickening polymer must be stable in the presence of hydrogen peroxide.

  Foam and mousse are usually supplied by a dispenser. The dispenser mixes and dispenses gas or air into the product.

  Preferred compositions are low foaming. Alternatively, it is preferred that the composition is foamable or that when used as a foam, the foam easily disintegrates and the surface need not be re-rinsed or wiped later to remove the foam. This will leave the maximum amount of antioxidant on the surface.

Surfactant :
The composition of the present invention (or used in the present invention) may comprise a cleaning surfactant. These are generally selected from anionic, nonionic, amphoteric, zwitterionic or cationic surfactants. The composition generally has a total amount of at least 0.05% by weight, preferably at least 0.1, 0.2, 0.5 or 1% by weight but no more than 45% by weight, usually no more than 25, 15 or 10% by weight. Contains a surfactant. Preferably the composition comprises at least one anionic and / or nonionic surfactant, more preferably at least one nonionic surfactant.

  Suitable synthetic (non-soap) anionic surfactants are water-soluble salts of organic sulfates and sulfonic acids having an alkyl group containing 8-22 carbon atoms in the molecular structure.

Examples of such anionic surfactants are water-soluble salts of the following compounds:
Sulfation of fatty alcohols obtained by reduction of (primary) long chain (eg 8-22 carbon atoms) alcohol sulfate (hereinafter referred to as PAS), in particular beef tallow or coconut oil glycerides Obtained by:
Alkyl benzene sulfonates, for example those in which the alkyl group contains 6-20 carbon atoms;
Secondary alkane sulfonate.

Also suitable are salts of the following compounds:
Alkyl glyceryl ether sulfates, in particular such ethers obtained from fatty alcohols derived from beef tallow and coconut oil;
-Fatty acid monoglyceride sulfates;
Sulfate of the reaction product of -1 mol fatty alcohol and 1-6 mol ethylene oxide;
A salt of an alkylphenol ethyleneoxy-ether sulfate having 1-8 ethyleneoxy units per molecule and the alkyl group containing 4-14 carbon atoms;
A reaction product of a fatty acid esterified with isethionic acid and neutralized with alkali;
And mixtures thereof.

  Preferred water-soluble synthetic anionic surfactants include mixtures of alkyl-benzene sulfonates and olefin sulfonates, and alkali metal (eg, sodium and potassium) salts and alkaline earths of alkyl sulfates and fatty acid mono-glyceride sulfates. Metal salts (for example, calcium and magnesium). The most preferred anionic surfactants are alkyl-aromatic sulfonates, such as alkyl benzene sulfonates containing 6-20 carbon atoms in a linear or branched alkyl group, specific examples of which are alkyl benzene sulfonates. Sodium acid or alkyl-toluene-, -xylene- or -phenolsulfonic acid sodium, alkylnaphthalene-sodium sulfonate, diamyl naphthalene-ammonium sulfonate, dinonyl-naphthalene-sodium sulfonate.

  When using synthetic anionic surfactants, the amount present in the composition of the present invention is generally at least 0.2%, preferably at least 0.5%, more preferably at least 1.0%, It will be 20% or less, preferably 10% or less, more preferably 8% or less.

  A suitable nonionic surfactant can be broadly described as a compound formed by the condensation of an alkylene oxide group with hydrophilic properties and an organic hydrophobic compound with aliphatic or alkylaromatic properties. . The length of the hydrophilic or polyoxyalkylene radical attached to a particular hydrophobic group can be easily adjusted to produce a water soluble compound having the desired balance between the hydrophilic and hydrophobic elements. This allows the selection of nonionic surfactants with the correct HLB.

  Specific examples include condensation products of linear or branched aliphatic alcohols having 8-22 carbon atoms with ethylene oxide, such as 2-15 moles of ethylene oxide per mole of coconut alcohol. Coconut oil ethylene oxide condensate; condensate of alkylphenol having 6-12 carbon atoms in the alkyl group with 5-25 moles of ethylene oxide per mole of alkylphenol; reaction product of ethylenediamine and propylene oxide And a condensate of ethylene oxide, which contains 40-80% by weight of ethyleneoxy groups and has a molecular weight of 5,000-11,000.

  Another example is: an alkyl glycoside that is a condensation product of a long-chain aliphatic alcohol and a sugar; having a structure represented by RRRNO, wherein one R represents an alkyl group having 8 to 18 carbon atoms, Each of the remaining Rs has a structure represented by a tertiary amine oxide such as dimethyldodecylamine oxide; RRRPO, each of which represents an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group; A tertiary phosphine oxide, such as dimethyl-dodecylphosphine oxide, which represents an alkyl group of 8-18 atoms and each remaining R represents an alkyl group of 1-3 carbon atoms or a hydroxyalkyl group; In which one R represents an alkyl group having 10 to 18 carbon atoms and the other R represents methyl or ethyl. Sulfoxide, e.g., methyl tetradecyl sulphoxide; an alkylene oxide condensates of fatty acid alkylolamides and alkyl mercaptans; fatty alkylol amide. Ethoxylated fatty alcohols are particularly preferred.

  The amount of nonionic surfactant to be used in the cleaning composition of the present invention is preferably at least 0.1 wt%, more preferably at least 0.2 wt%, most preferably at least 0.5 wt% or 1 % By weight. The maximum amount is suitably 15%, preferably 10%, most preferably 7%.

  The composition contains both anionic and nonionic surfactants in amounts selected to give a structured liquid detergent composition or "self-thickening" composition taking into account the level of electrolyte present. You may contain. In this way, a thickened liquid cleaning composition can be produced in the presence of an organic solvent without the need for any additional thickener, and the resulting composition can be used over a wide temperature range for a long period of time. Can have a shelf life.

  The weight ratio of anionic surfactant to nonionic surfactant can be varied in view of the above conditions and depends on their type, but preferably 1: 9-9: 1, more preferably The range is 1: 4-4: 1. According to an embodiment illustrating the purpose of the present invention, the composition comprises 0.1-2% by weight antioxidant (s), 1-4% by weight hydrogen peroxide, and 8-22. 0-20% by weight, preferably 0.2-10% by weight of a water-soluble synthetic anionic sulfate or sulfonate surfactant salt, containing an alkyl radical having 1 carbon atom in the molecule; 7% by weight ethoxylated nonionic surfactant. This ethoxylated nonionic surfactant can be obtained by condensation of an aliphatic alcohol having 8-22 carbon atoms in the molecule with ethylene oxide, and the condensate is 2 per mole of aliphatic alcohol. It has -15 moles of ethylene oxide. The balance of the composition consists of other optional ingredients and water.

  Suitable amphoteric surfactants that can optionally be used are aliphatic secondary and primary having an alkyl group of 8-18 carbon atoms and an aliphatic group substituted by an anionic water solubilizing group. Derivatives of tertiary amines, such as sodium 3-dodecylaminopropionate, sodium 3-dodecylaminopropanesulfonate and sodium N-2-hydroxydodecyl-N-methyltaurate.

  Suitable cationic surfactants that may be used in some cases have 1 or 2 aliphatic groups of 8 to 18 carbon atoms and 2 or 3 small aliphatic (eg methyl) groups. Quaternary ammonium salts such as cetyltrimethylammonium bromide.

  Suitable zwitterionic surfactants that can optionally be used are aliphatic quaternary having an aliphatic group of 8-18 carbon atoms and an aliphatic group substituted with an anionic water solubilizing group. Derivatives of ammonium, sulfonium and phosphonium compounds such as 3- (N, N-dimethyl-N-hexadecylammonium) propane-1-sulfonate betaine, 3- (dodecylmethylsulfonium) propane-1-sulfonate betaine and 3- ( Cetylmethylphosphonium) ethanesulfonate betaine.

  Another example of suitable surfactants is described in the known document “Surface Active Agents” Vol. 1, Schwartz & Perry, Interscience 1949, Vol. 2, published by Schwartz, Perry & Berch, Interscience 1958, the latest edition of “McCutcheon's Emulsifiers and Detergents”, Manufacturing Factories, Company, or “Tenside-Tch. Stache, 2nd Edn. , Carl Hauser Verlag, 1981, a commonly used compound as a surfactant.

  The composition of the present invention may contain other ingredients that assist its cleaning performance. For example, the composition may be a detergency builder such as nitrilotriacetate, polycarboxylate, citrate, dicarboxylic acid, water-soluble phosphate (especially ortho-, pyro- or poly-phosphate or mixtures thereof), zeolites and mixtures thereof. In an amount up to 25%. If a builder is present, the builder will preferably form at least 0.1% of the composition.

Ethylenediaminetetraacetic acid, polyphosphonates (DEQUEST ^[TM] -series) and (ortho, pyro, poly) phosphate / phosphate (collectively referred to as “phosphate” in the following description), various types of polyfunctional organic acids (especially Sequestering agents such as citrate) and salts may optionally be used provided that they are compatible with the antioxidant. Such sequestering agents are particularly useful when used in combination with antioxidants that can form colored complexes with metals such as in the case of tannic acid, tannin, gallic acid and derivatives. When such a sequestering agent is present, its useful amount is 0.05-5% by weight of the composition, preferably 0.1-1%.

  Another optional component of the composition of the present invention is a foam control material, which can be used in compositions that tend to produce excessive foam during use.

An example of a foam control material is soap. The soap is a salt of a fatty acid and an alkali metal soap such as sodium, potassium and ammonium salts of fatty acids containing from about 8 to about 24 carbon atoms, preferably from about 10 to about 20 carbon atoms. It is. Particularly useful are the sodium, potassium and mono-, di- and triethanolamine salts of mixtures of fatty acids derived from coconut oil and peanut oil. When using soap, the amount of soap may form at least 0.005%, preferably at least 0.1% by weight of the composition. It has been found that fatty acid soaps such as Prifac 7901 ^[TM] are suitable for this purpose.

  Another example of a foam control material is silicone oil. When the hydrocarbon co-solvent is present at a sufficiently high level, the hydrocarbon itself provides some or all of the desired foam suppression activity.

  In addition to the components described above, the composition of the present invention also contains a dye, a white extender pigment, a fluorescent brightener, a soil suspending agent, a detersive enzyme, a gel control agent, a freeze-thaw stabilizer, a preservative ( For example, 1,2-benzisothiazolin-3-one) and various other optional components such as hydrotropes can be included. However, the compositions of the present invention do not contain an appropriate amount of antimicrobial agent (other than hydrogen peroxide) to impart antimicrobial activity to the skin. When present, the antimicrobial agent is generally present only in an amount necessary to prevent microbial contamination of the composition.

  Since the use of the composition of the present invention and the composition for cleaning hard surfaces is dependent on the presence of hydrogen peroxide, the composition can be an alkoxylated aliphatic or arylaliphatic carboxylic acid as the corresponding peracid precursor. Does not contain.

The dispensing liquid composition can be dispensed by being contained in any suitable means such as a spray applicator. Pump dispensers (spray pumps or non-spray pumps) and dispensing applicators (bottles, etc.) are also possible. The composition can also be applied to the surface by a cloth impregnated with the liquid composition.

  In the following examples, all percentages are by weight unless otherwise stated.

Example 1 : General purpose cleaning composition Biodac L6S50 (non-ionic) 1.2%
LAS (anionic) 3.5%
Tannic acid 0.50%
Hydrogen peroxide 3.0%
Phosphoric acid 0.42%
Sodium hydroxide 0.046%
Urea 1.0%
Fragrance 0.35%
Dequest 2046 0.10%
Coco fatty acid (Prifac 7907 ^™ ) 0.30%
Up to 100% water

Control 1
Same as Example 1 except not containing tannic acid.

Details of Evaluation Substrate A stainless steel substrate was used for the cleaning test. The substrate was brushed stainless steel (grade 304 sheet BS 1449 Pt2 1983, provided by Mercyside Metal Services Ltd) with dimensions of 380 mm x 300 mm. With this dimension, two wash areas, one each on the left and right sides of the tile, can be provided. Each cleaning area is 215 mm × 150 mm.

Pre-cleaning of stainless steel tiles Prior to the cleaning experiment, the tiles were pre-cleaned as follows:
-Commercially available liquid abrasive cleaner (Jif cream cleaner),
Polish with moist J-cloth and rinse with hot water;
・ Liquid dish detergent (Persil liquid dish detergent),
Polish with moist J-cloth and rinse with hot water;
・ Polish with calcium carbonate, wet J-cloth, rinse with hot water and finally rinse with deionized water;
-Drain the tiles, dry them with a paper towel, and remove the calcium carbonate deposits completely.

Pretreatment for stainless steel tiles A cardboard frame was placed on top of the stainless steel tiles to expose the two areas of the tile to be pretreated. On one 215 mm × 150 mm area, approximately half of the 1.0 ml aliquot of the test composition collected with a pipette was applied linearly along the 150 mm upper side of the pretreatment area. The remaining amount of 1.0 ml of the test composition was applied in the same manner along the 150 mm lower side of the area. The cardboard frame was carefully removed so that the applied specimen could be easily spread over the entire pretreatment area. Wet and squeezed by hand, J-close ^™ (deionized water) was folded around a 150 mm plastic ruler. This was used to spread a 1.0 ml aliquot of the composition under test across the steel surface. The specimen was spread over the entire designated area with four straight lines, two downwards and two upwards, and in each case four overlapping washed specimens were prepared. After the pretreatment application was completed, the tiles were dried for 2 hours and then sprayed with dehydrated castor oil stains.

Stain adhesion and aging on pretreated stainless steel tiles Castor oil stain spraying was performed under standard conditions in a ventilated chamber to ensure good reproducibility between different experiments. The soil was dehydrated castor oil with 0.2% fat red 7B dye. This was stored in the refrigerator when not in use. Equilibrated to ambient temperature before spraying.

  Ventilation chamber walls / floor and laboratory jacks were covered with paper towels. A laboratory jack was used to push the tiles up to the actual spray height. The height of the experimental jack was 200 mm, and was placed in the center of the back of the ventilation chamber. A line 40 mm away from the rear wall of the ventilation chamber was marked on the top of the experimental jack. This was used as the positioning line for each stainless steel tile before spraying. A parallel line of 40 mm to 270 mm above the experimental jack was written on the floor of the ventilation chamber. The Perspex spray guide was aligned to this location when spraying.

  Oily soil was sprayed onto the steel tile using a commercially available gravity filled spray gun. The rear dial of the gravity filling gun was rotated 360 degrees counterclockwise from the closed position, and the side dial was also rotated 270 degrees counterclockwise from the closed position. Connect the gravity filled spray gun to the floor-mounted air compressor device, 25p. s. i. The soil was sprayed onto the steel tile using a pressure of. A clamp base was placed in the ventilation chamber to hold the spray gun when not in use. Dehydrated castor oil stain was poured into an open bowl of a spray gun.

  A cardboard spray frame was clipped to the stainless steel tile and placed in the center of the laboratory jack at a well-viewed location along a 40 mm line from the rear wall of the ventilation chamber. The cardboard spray frame is a rectangular card piece with the same dimensions as a stainless steel tile, with two cutout areas of 215mm x 150mm, with one window on the left and the other on the right, separating the card between the two windows There is a belt. The Perspex spray guide was positioned directly on the 270 mm line in front of the first window of the tile to be sprayed. Starting from the top, this area of the tile was sprayed for a total of 35 seconds following the spray guide line. The time required for spraying from the top to the bottom is about 9 seconds. Therefore, the trajectory of the spray guide is drawn four times in each area to be sprayed of 215 mm × 150 mm. After spraying the first area of the tile, the Perspex spray guide was positioned in front of the second area and the adjacent areas were sprayed in exactly the same way. After spraying the entire tile twice, the tile was removed from the ventilation chamber and the cardboard spray frame was carefully removed. Sprayed tiles were stacked directly on the oven shelf. An aluminum ring spacer placed at each corner of the tile was used to separate each of the stainless steel tiles. These spacers separated each tile by 10 mm. When all the tiles had been sprayed, they were put together in an oven and aged.

  The tile was aged at 85 ° C. for 1.5 hours. The prepared tile was not washed until the next day.

  The force required to remove dirt from the test surface using a cellulose sponge cloth was measured with a device manufactured for the specific purpose of measuring the force represented by Ns. The cleaning composition used to remove the soil was the Control 2 composition. Therefore, it can be judged that the reduction in the force required for cleaning is caused solely by the antioxidant in the pretreatment composition.

  The results for Example 1 and Control 1 (corresponding to the composition from Example 1 with tannic acid removed) are shown in Table I. The results shown in the table are the geometric mean of four duplicate experiments.

Claims (21)

(A) treating the hard surface with a liquid cleaning composition comprising a radical scavenging antioxidant and hydrogen peroxide;
(B) leaving the deposits of fatty dirt;
(C) cleaning the surface to remove fatty soils;
A method for removing fatty dirt from a hard surface that sequentially contains.   The method of claim 1 wherein a liquid cleaning composition comprising a radical scavenging antioxidant and hydrogen peroxide is also used in step (c).   The method of claim 1 wherein the antioxidant is a natural antioxidant.   4. A method according to any one of claims 1 to 3 wherein the liquid cleaning composition comprises 0.05 to 10 wt% antioxidant.   5. A method according to any one of claims 1 to 4 wherein the liquid cleaning composition comprises 0.1-10% by weight hydrogen peroxide.   The method of any one of claims 1 to 5, wherein the cleaning composition comprises a surfactant.   7. A method according to any one of claims 1 to 6, wherein the antioxidant is selected from tannic acid and tocopherol.   A liquid cleaning composition comprising a natural radical scavenging antioxidant and hydrogen peroxide.   The liquid cleaning composition according to claim 8, further comprising a surfactant.   The liquid cleaning composition according to claim 8 or 9, wherein the amount of hydrogen peroxide is 0.1-10 wt%.   The liquid cleaning composition according to any one of claims 8 to 10, wherein the amount of the antioxidant is 0.05 to 10% by weight.   12. A liquid cleaning composition according to claim 11 wherein the amount of antioxidant is 0.1-0.5% by weight.   The liquid cleaning composition according to any one of claims 8 to 12, wherein the antioxidant is a compound containing a substructure of 1,2-dihydroxybenzene or 1,4-dihydroxybenzene.   The liquid cleaning composition according to any one of claims 8 to 13, wherein the antioxidant is selected from tannic acid and tocopherol.   The liquid cleaning composition according to any one of claims 8 to 14, wherein the pH is 1.5-7.   Use of a radical scavenger antioxidant and hydrogen peroxide in a liquid cleaning composition to facilitate the removal of fatty soils from hard surfaces.   17. Use according to claim 16, wherein the antioxidant is present in the cleaning composition in an amount of 0.05-10% by weight and hydrogen peroxide is present in an amount of 0.1-10% by weight.   Use according to claim 16 or 17, wherein the antioxidant is a natural antioxidant.   The use according to claim 18, wherein the antioxidant is a compound containing a substructure of 1,2-dihydroxybenzene or 1,4-dihydroxybenzene.   20. Use according to claim 19, wherein the antioxidant is selected from tannic acid and tocopherol.   21. Use according to any one of claims 16 to 20, wherein the pH of the cleaning composition is 1.5-7.