MXPA97003374A - Lig work liquid cleaning compositions - Google Patents

Abstract

A light duty liquid detergent with disposable cleansing properties and gentleness to human skin comprising 5 essential surfactants: a water-soluble non-ionic surfactant, a non-ionic surfactant of C8-18 ethoxylated alkyl ether sulfate, a sodium sulfonate surfactant of C10-20 paraffin, an alkyl sulfate surfactant and a betai surfactant

Description

LIGHT WORK LIQUID CLEANING COMPOSITIONS Field of the Invention This invention relates to a light duty liquid cleaning composition which imparts softness to the skin and is designed in particular for washing dishes and which is effective in removing greasy dirt and leaving unrinsed surfaces with a shiny appearance.

Background of the Invention In recent years, liquid detergents for all purposes have been widely accepted for the cleaning of hard surfaces, for example, woodwork and painted panels, tile walls, wash receptacles, bath tubs, linoleum and tile floors, washable wallpaper, etc. Such liquids for all purposes comprise transparent and opaque aqueous mixtures of water-soluble synthetic organic detergents and water-soluble detergent-reinforcing salts. In order to achieve a cleaning efficiency comparable to cleaning compositions for all granular or powder purposes, the use of water-soluble inorganic phosphate-reinforcing salts in the liquids for all purposes of prior art. For example, such initial phosphate-containing compositions are described in U.S. Patent Nos. 2,560,839; 3,234,138; 3,350,319; and British Patent No. 1,223,739.

In view of the efforts of environmentalists to reduce phosphate levels in the earth's water, liquids have appeared for all improved purposes containing reduced concentrations of inorganic phosphate-reinforcing salts or phosphate-free reinforcing salts. A particularly useful autopacificial liquid of the latter type is described in U.S. Patent No. 4,244,840.

However, these liquid detergents for all purposes of the prior art containing detergent reinforcing salts or other equivalents tend to leave films, stains or scratches on un-rinsed cleaned surfaces, particularly glossy surfaces. Therefore, such liquids require a thorough rinsing of the cleaned surfaces which is a time-consuming task for the user.

In order to overcome the above disadvantage of the liquid for all purposes of the prior art, United States Patent No. 4,017,409 teaches that a A mixture of paraffin sulphonate and a reduced concentration of inorganic phosphate-reinforcing salt should be used. However, such compositions are not completely acceptable from an environmental point of view based on the content of the phosphate. On the other hand, another alternative to achieve liquids for all phosphate-free purposes has been the use of a major proportion of a mixture of anionic and nonionic detergents with minor amounts of glycol ether solvent and organic amine as shown in the patent of the United States of America No. 3,935,130. Again, this approach has not been completely satisfactory and the high levels of organic detergents needed to achieve cleaning causes foaming which, in turn, leads to the need for thorough rinsing which has been found to be undesirable by consumers. current Another approach to the formulation of the liquid detergent composition for all purposes or hard surface where the homogeneity of the product and clarity are important considerations involves the formation of oil-in-water microemulsions (o / w) which contain one or more surfactant detergent compounds, a water-immiscible solvent (typically a hydrocarbon solvent), water, and a "cosurfactant" compound which provides stability to the product. By definition, an oil-in-water microemulsion is a colloidal dispersion that spontaneously forms "oil" phase particles having a particle size in the range of 25 to 800 A in a continuous aqueous phase.

In view of the extremely fine particle size of the dispersed oil phase particles, the microemulsions are transparent to light and are transparent and are usually highly stable against phase separation.

Patent disclosures relating to the use of grease removal solvents in oil-pet microemulsions include, for example, European patent applications EP 0137615 and EP 0137616 - Herbots et al .; European Patent Application EP 0160762 to Johnston et al .; and U.S. Patent No. 4,561,991 to Herbots et al. Each of these patent disclosures also shows the use of at least 5% by weight of grease removal solvent.

It is also known from the patent application British GB 2144763A granted to Herbots et al., Published on March 13, 1985, that magnesium salts improve the fat removal performance of organic grease removal solvents, such as terpenes, in liquid microemulsion detergent compositions of oil-in-water. The compositions of this invention described by Herbots and others they require at least 5% of the mixture of grease removal solvent and magnesium salt and preferably at least 5% solvent (which may be a mixture of a non-polar solvent immiscible in water with a slightly polar solvent and sparingly soluble) and at least 0.1% magnesium salt.

However, since the amount of sparingly soluble and water-insoluble components which may be present in the oil-in-water microemulsion, with the total active ingredients low without impairing the stability of the microemulsion is very limited, ( example up to 18% by weight of the aqueous phase), the presence of such high amounts of grease removal solvent tend to reduce the total amount of oily or greasy soils that can be taken by and within the microemulsion without causing a phase separation .

The present invention relates to novel light duty liquid laundry detergent compositions with high foaming properties, containing noionic surfactant, an alkyl sulfate surfactant, a sulfanate surfactant, a betaine surfactant, and an ethoxylated alkyl ether surfactant.

Noionic surfactants are generally chemically inert and stable towards pH change and are therefore very suitable for mixing and formulating with others materials. The superior performance of the noionic surfactants on the removal of oily dirt is well recognized. Oionic surfactants are also known to be mild to human skin. However, as a class, noionic surfactants are known to be low or moderate frothers. Consequently, for detergents which require a copious and stable foam, the application of noionic surfactants is limited. There has been a substantial interest and efforts to develop a high foaming detergent with substantial amounts of noion surfactants. However, little has been achieved.

The prior art is replete with light duty liquid detergent compositions containing noionic surfactants in combination with betaine and / or anionic surfactants wherein the noionic detergent is not the main active surfactant, as shown in the United States patent No No. 3,658,895 wherein an anionic base shampoo contains a minor amount of a fatty acid alkanolamide. U.S. Patent No. 3,769,398 describes a betaine-based shampoo containing minor amounts of noion surfactants. This patent states that the low foaming properties of the noionic detergents makes their non-preferred use in shampoo compositions. U.S. Patent No. 4,329,335 also describes a shampoo containing a surfactant of betaine, the main ingredient and minor amounts of a noionic surfactant and a fatty acid mono- or di-ethanolamide. U.S. Patent No. 4,259,204 discloses a shampoo comprising 0.8-20% by weight of an anionic phosphoric acid ester and an additional surfactant which can be either anionic, amphoteric, or nonionic. U.S. Patent No. 4,329,334 discloses an amphoteric-anionic base shampoo containing a major amount of anionic surfactant and minor amounts of noion and betaine surfactants.

U.S. Patent No. 3,935,129 discloses a liquid cleaning composition based on the alkali metal silicate content and containing five basic ingredients, such as urea, glycerin, triethanolamine, anionic detergent and a nonionic detergent. The silicate content determines the amount of anionic and / or nonionic detergent in the liquid cleaning composition. However, the foaming property of these detergent compositions is not discussed there.

The patent of the United States of America No. 4,129,515 discloses a heavy-duty liquid laundry detergent for washing fabrics comprising a mixture of essentially equal amounts of anionic and noionic surfactants, alkanolamides and magnesium salts, and optionally, zwitterionic surfactants such as foam modifiers.

U.S. Patent No. 4,224,195 discloses an aqueous detergent composition for washing socks or stockings comprising a specific group of nonionic detergents, such as an ethylene oxide of a secondary alcohol, a specific group of anionic detergents, such as , a sulfuric ester salt of an ethylene oxide adduct of a secondary alcohol, and an amphoteric surfactant which may be a betaine, wherein either the anionic or the noionic surfactant may be the main ingredient.

The prior art also discloses detergent compositions containing all nonionic surfactants as shown in U.S. Patent Nos. 4,154,706 and 4,329,336 wherein the shampoo compositions contain a plurality of particular nonionic surfactants in order to effect desirable foaming. and detersive properties despite the fact that nonionic surfactants are usually deficient in such properties.

U.S. Patent No. 4,013,787 discloses a piperazine-based polymer in conditioning and shampoo compositions which may contain all of the noion surfactant or all of the anionic surfactant.

The patent of the United States of America No. 4,671,895 shows a liquid detergent composition containing an alcohol sulfate surfactant, a nonionic surfactant, a paraffin sulphonate surfactant, an alkyl ether sulfate surfactant and water.

U.S. Patent No. 4,450,091 discloses high viscosity shampoo compositions containing a mixture of an amphoteric betaine surfactant, a polyoxyethylene polybutylene noionic detergent, an anionic surfactant, a fatty acid alkanolamide and a polyoxyalkylene glycol fatty ester . But none of the exemplified compositions contains a mixture of active ingredient wherein the noionic detergent is present in a higher proportion, probably due to the low foaming properties of the polyoxybutylene polyoxyethylene noionic detergent.

U.S. Patent No. 4,595,526 discloses a composition comprising a nonionic surfactant, a betaine surfactant, an anionic surfactant and a C 2 -C 14 fatty acid monoethanolamide foam stabilizer.

However, none of the patents cited above describe a liquid detergent composition containing a nonionic surfactant, a high foam anionic sulfonate surfactant, an alkyl sulfate surfactant, a betaine surfactant, and an ethoxylated alkyl ether sulfate surfactant as the essential ingredients, and the composition does not contain any HEDTA, amine oxide, abrasives , silicas, alkaline earth metal carbonates, alkyl glycine surfactant, cyclic imidinium surfactant, alkali metal carbonates or more than 3% by weight of a fatty acid or its salt thereof.

Synthesis of the Invention It has now been found that a light duty liquid composition can be formulated with a non-ionic surfactant which has desirable cleansing properties, softness to human skin.

It is an object of this invention to provide a novel light duty liquid detergent composition containing a nonionic surfactant, an alkyl sulfate surfactant, a betaine surfactant, a sulfonate surfactant and an ethoxylated alkyl ether sulfate surfactant, wherein the composition does not contain any amine oxide, HEDTA, silicas, abrasives, alkali metal carbonates, alkaline earth metal carbonates, alkyl glycine surfactant, cyclic imidineo surfactant, or more than 3% by weight of a fatty acid or salt of the same.

Another object of this invention is to provide a novel lightweight working liquid detergent with desirable high foam and cleaning properties which is gentle to human skin.

The objects, advantages and additional novel features of the invention will be set forth in part in the description that follows, and in part will be apparent to those skilled in the art of examining the following or may be learned by practicing the invention. The objects and advantages of the invention can be realized and achieved by means of instrumentation and combinations particularly designated in the appended claims.

To achieve the foregoing and other objects and in accordance with the purpose of the present invention, as disclosed herein and herein, the novel high foam lightweight liquid laundry detergent of this invention comprises five essential surfactants: a soluble ethoxylated nonionic surfactant in water, a betaine surfactant, an ethoxylated alkyl ether sulfate surfactant, an anionic alkyl sulfate surfactant, and an anionic sulfonate surfactant; wherein the composition does not contain any amine oxide, HEDTA, silicas, abrasives, and alkali metal carbonates, alkaline earth metal carbonates, alkyl surfactant glycine, cyclic imidinium surfactant or more than 3% by weight of a fatty acid or salt thereof.

Detailed description of the invention The light duty liquid compositions of the present invention comprise approximately by weight: (a) from 10% to 17% of an alkali metal salt of a C12 paraffin sulfate, g; (b) from 3% to 8% of an alkali metal salt of an ethoxylated alkyl ether sulfate of Cg.lg; (c) from 2% to 4% of a betaine surfactant; (d) from 10% to 14% of a non-ionic surfactant; (e) from 0% to 12% of at least one solubilizing agent; (f) from 2% to 5% of an alkyl sulfate surfactant; (g) from 0 to 10% of a complementary solubilizing agent; and (h) the rest being water.

The noionic surfactant is present in amounts of 10 to 14%, preferably 11% to 12% by weight of the composition and provides superior performance in the removal of oily dirt and softness to human skin.

The water-soluble nonionic surfactants used in this invention are commercially known and include the primary aliphatic alcohol ethoxylates, the secondary aliphatic alcohol ethoxylates, the alkyl phenol ethoxylates and the propylene oxide-ethylene oxide condensates on primary albanises, such as Plurafacs (BASF) and condensates of ethylene oxide with esters is of sorbitan fatty acid such as Tweens (ICI). Organic nonionic synthetic detergents are generally the condensation products of an organic alkyl or aliphatic aromatic hydrophobic compound and hydrophilic ethylene oxide groups. Virtually any hydrophobic compound having a carboxy, hydroxy, aido or amino group with a free hydrogen subject to nitrogen can be condensed with ethylene oxide or with the polyhydration product thereof, polyethylene glycol, to form a water-soluble noionic detergent. In addition, the length of the polyethenoxy chain can be adjusted to achieve the desired balance between the hydrophobic and hydrophilic elements.

The class of noionic detergent includes the condensation products of a higher alcohol (for example an alkanol containing 8 to 18 carbon atoms in a straight or branched chain configuration) condensed with five to thirty moles of ethylene oxide, for example, a lauryl or myristyl alcohol condensed with 16 moles of ethylene oxide (EO), tridecanol condensed with 6 moles of ethylene, myristyl alcohol condensed with 10 moles of ethylene oxide per mole of myristyl alcohol, the condensation product of ethylene oxide with a cut of coconut fatty alcohol containing a mixture of fatty alcohols with alkyl chains varying from 10 to 14 carbon atoms in length and where the condensate contains 6 moles of ethylene oxide ether per mole of total alcohol or 9 moles of ethylene oxide per mole of alcohol and tallow alcohol ethoxylates containing 6 ethylene oxide to 11 ethylene oxide per mol of alcohol.

A preferred group of the above noion surfactants are the Neodol ethoxylates (from Shell Co.) which are higher aliphatic primary alcohol containing 9-15 carbon atoms, such as C9-C alkanol, condensed with 7 to 10 moles of ethylene (Neodol 91-8), alkanol C, 2.13 condensed with 6.5 moles of ethylene oxide (Neodol 23-6.5), C12.1S alkanol condensed with 12 moles of ethylene oxide (Neodol 25-12), C14-15 alkanol condensed with 13 moles of ethylene oxide (Neodol 45-13) and the like. Such ethoxymers have an HLB (lipophilic hydrophobic balance) value of 8 to 15 and give good oil-in-water emulsification, whereas ethoxymers with lipophilic hydrophobic balance values below 8 contain less than 5 ethylene oxide groups and tend to be poor emulsifiers and poor detergents.

The further satisfactory water-soluble ethylene oxide alcohol condensates are the condensation products of the secondary aliphatic alcohol containing from 8 to 18 carbon atoms in a straight or branched chain configuration condensed with 5 to 30 moles of ethylene oxide. Examples of the commercially available nonionic detergents of the above type are the secondary alcohol C, -C, 5 fused with either 9 ethylene oxide (Tergitol 15-S-9) or 12 ethylene oxide (Tergitol 15-S-12). ) marketed by Union Carbide.

Other suitable nonionic detergents include the polyethylene oxide condensates of one mole of alkyl phenol containing from 8 to 18 carbon atoms in a straight or branched chain alkyl group with 5 to 30 moles of ethylene oxide. Specific examples of alkyl phenol ethoxylates include nonyl phenol condensed with 9.5 moles of ethylene oxide per mole of nonyl phenol, of nonyl phenol condensed with 12 moles of ethylene oxide per mole of phenol, of nonyl phenol condensed with 15 moles of oxide ethylene per mole of phenol and di-isoctylphenol condensed with 15 moles of ethylene oxide per mole of phenol. Commercially available nonionic surfactants of this type include Igepal CO-630 (nonyl phenol ethoxylate) marketed by GAF Corporation.

The water-soluble condensation products of water are also among the satisfactory nonionic detergents. a C8-C20 alkanol with a heteric mixture of ethylene oxide and propylene oxide wherein the weight ratio of ethylene oxide to propylene oxide is from 2.5: 1 to 4: 1, preferably from 2.8: 1 to 3.3 : 1, with the total ethylene oxide and propylene oxide (including the ethanol or terminal propanol group) being from 60-85%, preferably 70-80%, by weight. Such detergents are commercially available from BASF-Wyandotte and a particularly preferred detergent is a condensate of C0-C6 alkanol with ethylene oxide and propylene oxide, the ratio by weight of ethylene oxide to propylene oxide being 3. : 1 and the total alkoxy content being 75% by weight.

Condensates of 2 to 30 moles of ethylene oxide with sorbitan C10-C20 alkanoic acid tri- and mono- and tri-esters having a lipophilic hydrophobic balance of 8 to 15 can also be employed as the noionic detergent ingredient in the composition described. These surfactants are well known and are available from Imperial Chemical Industries under the trademark Tween. Suitable surfactants include polyoxyethylene (4) sorbitan monolaurate, polyoxyethylene (4) sorbitan monostearate, polyoxyethylene (20) sorbitan trioleate and polyoxyethylene (20) sorbitan tristearate.

Other suitable water-soluble noionic detergents are marketed under the name "Pluronics". The Compounds are formed by condensing the ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol. The molecular weight of the hydrophobic part of the molecule is of the order of 950 to 4000 and preferably of 200 to 2,500. The addition of the polyoxyethylene radicals to the hydrophobic part tends to increase the solubility of the molecule as a whole to make the surfactant soluble in water. The molecular weight of the block polymers varies from 1,000 to 15,000 and the ethylene oxide content may comprise from 20% to 80% by weight. Preferably, these surfactants will be in the liquid form and satisfactory surfactants are available as classes L 62 and L 64.

The anionic sulfonate surfactants which are used in the detergent of this invention are water soluble such as the triethanolamine salts or the sodium, potassium, ammonium and ethanolammonium salts of linear C8-C16 alkyl benzene sulfonates; sulfonates of C, 0-C20 paraffins and alpha-olefin sulfonates containing 10-24 carbon atoms. The preferred anionic sulfonate surfactant is a sodium salt of a C12.18 paraffin sulfonate present in the composition at a concentration of 10% to 17% by weight, more preferably 12% to 15%.

The paraffin sulfonates can be monosulfonates or di-sulfonates and are usually mixtures of the same, obtained by sulfonating paraffins of 10 to 20 carbon atoms. Preferred paraffin sulphonates are those of chains of C carbon atoms, 2.1H and more preferably these are C chain. 4., 7. Paraffin sulfonates having the sulfonate group or groups distributed along the paraffin chain are described in U.S. Patent Nos. 2,503,280; 2,507,088; 3,260,744; and 3,372,188; and also in German Patent No. 735,096. Such compounds should be made to specifications and desirably the content of paraffin sulfonates outside the range of C, 4., 7 will be lower and will be minimized as will the contents of di- or polysulfonates.

Examples of other suitable sulfonated anionic detergents are the well-known higher alkyl mononuclear aromatic sulphonates, such as the higher alkylbenzene sulfonates containing from 9 to 18 or preferably from 9 to 17 carbon atoms in a higher alkyl group in a straight or branched chain, or sulfonated, or sulfonates of alkyl toluene C8.l5. A preferred alkylbenzene sulfonate is a linear alkylbenzene sulfonate having a higher content of 3-phenyl (or higher) isomers and a correspondingly lower (well below 50%) 2-phenyl content (or lower) isomers, such as those sulfonates wherein the benzene ring is subject mainly to position 3 or higher (eg, 4, 5, 6 or 7) of the alkyl group and the The content of the isomers in which the benzene ring is held in position 2 or 1 is correspondingly low. Preferred materials are set forth in U.S. Patent No. 3,320,174, especially those in which the alkyls are 10 to 13 carbon atoms.

The ethoxylated alkyl ether sulfate surfactants used in the present compositions have the structure R- (OCHCH2) nOS03M + wherein n is 1 to 22 more preferably 1 to 3 and R is an alkyl group having 8 to 18 carbon atoms, more preferably 12 to 15 and natural cuts, for example, C12., 4; C, 2_i5 and M is an ammonium cation or a metal cation, more preferably sodium. The ethoxylated alkyl ether sulfate is present in the composition at a concentration of 3 to 8 percent by weight, more preferably 3.5% to 5.5% by weight.

The ethoxylated alkyl ether sulfate can be made by sulfating the condensation product of ethylene oxide and C8.10 alkanol, and neutralizing the resulting product. The ethoxylated alkyl ether sulfates differ from one another in the number of carbon atoms in the alcohols and in the number of moles of ethylene oxide reacted with one mole of such alcohol.

Preferred ethoxylated alkyl ether polyethenoxy sulphates contain from 12 to 15 carbon atoms to the alcohols and in the alkyl groups thereof, for example, sulphate (3E0) myristyl sodium.

The alkylphenol ether sulphates Cg.lg ethoxylates containing from 2 to 6 moles of ethylene oxide in the molecule are also suitable for use in the compositions of the invention. These detergents can be prepared by reacting an alkylphenol of 2 to 6 moles of ethylene oxide and sulfatar and neutralizing the resulting ethoxylated alkylphenol. The concentration of the ethoxylated alkyl ether sulfate sulfactant is from 1 to 8% by weight.

Examples of the satisfactory anionic sulfate surfactants used in the present composition are the ammonium salts of C8-alkyl alkyl sulfate salts. The alkyl sulphates can be obtained by sulfating the alcohols obtained by reducing the glycerides of coconut oil or bait or mixtures thereof and neutralizing the resulting product.

Water-soluble zwitterionic surfactant (beta? na) which is also an essential ingredient of the present light duty liquid detergent composition, constitutes from 2% to 4%, preferably from 2.5% to 3.5%, by weight and it provides good blending and softness properties to the liquid detergent of non-ionic base present. The aionic oil surfactant is a water soluble betaine having the general formula.

R2 + R, - N - R4 - X - R3 wherein X is selected from the group consisting of C02- and S03 wherein R is an alkyl group having from 10 to 20 carbon atoms, preferably from 2 to 16 carbon atoms, or the amido radical; H R - C - N - (CH 2), - wherein R is an alkyl group having from 9 to 19 carbon atoms and a is the integer from 1 to 4; R2 and R3 are each alkyl groups having from 1 to 3 carbons and preferably a carbon; R4 is a hydroxyalkylene or alkylene group having from 1 to 4 carbon atoms, and optionally, a hydroxyl group. Typical alkyl dimethyl betaines include decyl dimethylbetaine or 2- (N-decyl-N, N-dimethyl, ammonium) acetate, cocodimethyl betaine or 2- (N-coconut, N, N-dimethylammonium) acetate, myristyl dimethyl betaine, palmityl dimethyl betaine, lauryl dimethyl betaine, cetyl dimethyl betaine, stearyl dimethyl betaine, etc. Amidobetaines silarly include coco amido ethyl betaine, coco amido propyl betaine and the like. A preferred betaine is coco (C8-Clg) amido propyl dimethyl betaine.

The present compositions contain 0% by weight at 12% by weight, more preferably from 1% by weight to 10% by weight of at least one solubilizing agent, which can be mono or dihydroxy C2.3 alkanols such as ethanol, sopropanol and propylene glycol and mixtures thereof. The solubilizing agents are included in order to control the low temperature turbidity transparency properties. Urea can optionally be employed in the present composition as a complementary solubilizing agent at a concentration of 0 to 10% by weight, more preferably 0.5% by weight to 8% by weight.

Other solubilizing agents are glycerol, water-soluble polyethylene glycols having a molecular weight of 300 to 600, polypropylene glycol of the formula HO (CH3CHCH20) nH wherein n is a number of 2 to 18, epoxies of polyethylene glycol and polypropylene glycol ( Synalox) and mono alkyl ethers C, -C6 and ethers of ethylene glycol and polypropylene glycol having the structural formulas R (X) "OH and R, (X) nOH where C is alkyl group, - C6, R, is a C2-C4 acyl group, (OCH2CH2) or (OCH2 (CH3) CH) and n is a number from 1 to 4.

Representative numbers of polypropylene glycol include dipropylene glycol include dipropylene glycol and polypropylene glycol having a molecular weight of 200 to 1000, for example polypropylene glycol 400. Other satisfactory glycol ethers are ethylene glycol monobutyl ether (butyl cellosolve), diethylene glycol monobutyl ether (butyl carbitol) triethylene glycol monobutyl ether, mono, di, tri, propylene glycol monobutyl ether, tetraethylene glycol monobutyl ether, mono, di, tri propylene glycol monobutyl ether, propylene glycol monomethyl ether, ethylene glycol monohexyl ether, propylene glycol tertiary butyl ether, ethylene glycol, onoethyl ether, ethylene glycol monomethyl ether, ethylene glycol monopropyl ether, ethylene glycol mono pentylether, diethylene glycol monomethyl ether, diethylene glycol monomethyl ether, diethylene glycol monopropyl ether, diethylene glycol monopentyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monopropyl ether, triethylene monopentyl glycol ether, triethylene glycol monohexyl ether, mono, di, tripropylene glycol mono ethyl ether, mono, di, tripropylene glycol monopropyl ether, mono, di tripropylene glycol monopentyl ether, mono, di, tripropylene glycol monohexyl ether, mono, di, tributyl glycol monomethyl ether, mono, di, tributylene glycol mono, di, tributylene glycol propyl ether, mono, di, tributylene glycol monobut ether, mono, di, tributylene glycol monopentyl ether, and mono, di, tributylene glycol monohexyl ether, ethylene glycol monoacetate and dipropylene glycol propionate.

The present formulas explicitly exclude alkali metal silicates and alkali metal reinforcing agents such as alkali metal polyphosphates, alkali metal carbonates, alkali metal phosphates and alkali metal citrates because these materials are used in The present composition can cause the composition to have a high PH as well as leaving a residue on the surface being cleaned. The final essential ingredient in the inventive compositions having improved interfacial tension properties is water.

In a final form, the present compositions exhibit stability at reduced and increased temperatures. More specifically, such compositions remain clear and stable in the range of 5 degrees centigrade to 50 degrees centigrade, especially from 10 degrees centigrade to 43 degrees centigrade. The present compositions have a light transmission of at least 95 percent. Such compositions exhibit a pH of 5 to 8. The liquid compositions are easily pourable and exhibit a viscosity in the range of 100 to 400 cps as measured at 25 ° C with a Brookfield RVT viscometer using a # 2 spindle rotating at 30 revolutions per minute. Preferably, the viscosity is maintained in the range of 150 to 300 cps. The compositions present have a minimum foam height of 150 ml after 55 rotations at 40 ° C as measured by the foam volume test using 0.75 grams of the composition per liter of water and 10 grams of corn oil per liter of water a hardness of 300 ppm.

The following examples illustrate the liquid cleaning compositions of the described invention. Unless otherwise specified, all percentages are by weight. The exemplified compositions are illustrative only, and do not limit the scope of the invention. Unless otherwise specified, the proportions in the examples and outside in the description are by weight.

EXAMPLE 1 The following composition was prepared in percent by weight by a simple mixing procedure: C9-C alcohol "7.5-8: 1 11.6 Lauryl alkyl dimethyl betaine 3.0 EO C12-C14 alcohol 2: 1 Na sulfate 4.3 Naphine sulfonate C14-17 13.7 Sodium exonic sulfonate mixture / LMMEA 5/3 2.0 Lauryl sulfate Ammonium 3.4 Perfume 0.25 Water Balance Brookfield rate (a) 225 rates Foaming litigation (b) 5.6 Washing dishes by hand with mixed dirt (c) 16 (a) LVT Brookfield with sp? 2 at 30 rpm (at 25 ° C) (b) Critical dirt load (in grams) required for reduce the foams of a test solution to a defined minimum under standard conditions of wash bath concentration, agitation, temperature and water hardness. (c) The mixed dirt is a mixture of olive oil, lard, flour and milk powder.

Claims (5)

1. A transparent light working liquid cleaning composition comprising approximately by weight: (a) from 10% to 17% of an alkali metal salt of a C12 paraffin sulfonate; (b) from 3% to 8% of an alkali metal salt of an ethoxylated alkyl ether sulfate Cg., g; (c) from 2% to 6% of a betaine surfactant; (d) from 10% to 14% of a non-ionic surfactant; (e) from 1% to 12% of at least one solubilizing agent; (f) from 2% to 5% of an ammonium salt of an alkyl sulfate surfactant; Y (g) the rest being water.

2. The composition as claimed in clause 1, characterized in that the solubilizing agent is a mono- or dihydroxy-alkanol CM.

3. The composition as claimed in clause 1, characterized in that said solubilizing agent is selected from the group consisting of isopropanol, ethanol and polypropylene glycol and mixtures thereof.

4. The composition as claimed in clause 1, characterized in that said solubilizing agent is selected from the group consisting of glycerol, polyethylene glycols, polypropylene glycol of the formula HO (CH3) CHCH20) nH, wherein n is from 2 to 18 , mono alkyl ethers C, -C6 and esters of ethylene glycol and propylene glycol having the formulas R (X) nOH and R ^ XJ.OH wherein R is an alkyl group C, ^, R, is an Acyl group C2 ^, X is (OCH2CH2) or (OCH2CHCH3) and n is from 1 to 4.

5. The composition as claimed in clause 1, characterized in that the solubilizing agent is diopropylene glycol monomethyl ether.