EP1272597A1

EP1272597A1 - High foaming, grease cutting light duty liquid detergent

Info

Publication number: EP1272597A1
Application number: EP01926849A
Authority: EP
Inventors: Rita Erilli; Chantal Gallant
Original assignee: Colgate Palmolive Co
Current assignee: Colgate Palmolive Co
Priority date: 2000-04-14
Filing date: 2001-04-10
Publication date: 2003-01-08
Also published as: WO2001079403A1; AU2001253359A1

Abstract

A light duty, liquid comprising: a paraffin sulfonate, an alpha olefin sulfonate, an ethoxylated alkyl ether sulfate, a fourth surfactant, a magnesium containing inorganic compound, and water.

Description

HIGH FOAMING, GREASE CUTTING LIGHT DUTY LIQUID DETERGENT Background of the Invention

The present invention relates to novel light duty liquid detergent compositions with high foaming and good grease cutting properties.

The prior art is replete with light duty liquid detergent compositions containing nonionic surfactants in combination with anionic and/or betaine surfactants wherein the nonionic detergent is not the major active surfactant. In U.S. Patent No. 3,658,985 an anionic based shampoo contains a minor amount of a fatty acid alkanolamide. U.S. Patent No. 3,769,398 discloses a betaine-based shampoo containing minor amounts of nonionic surfactants. This patent states that the low foaming properties of nonionic detergents renders its use in shampoo compositions non-preferred. U.S. Patent No. 4,329,335 also discloses a shampoo containing a betaine surfactant as the major ingredient and minor amounts of a nonionic surfactant and of a fatty acid mono- or di- ethanolamide. U.S. Patent No. 4,259,204 discloses a shampoo comprising 0.8 to 20% by weight of an anionic phosphoric acid ester and one additional surfactant which may be either anionic, amphoteric, or nonionic. U.S. Patent No. 4,329,334 discloses an anionic-amphoteric based shampoo containing a major amount of anionic surfactant and lesser amounts of a betaine and nonionic surfactants.

U.S. Patent No. 3,935,129 discloses a liquid cleaning composition containing an alkali metal silicate, urea, glycerin, triethanolamine, an 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 properties of these detergent compositions are not discussed therein.

U.S. Patent No. 4,129,515 discloses a heavy duty liquid detergent for laundering fabrics comprising a mixture of substantially equal amounts of anionic and nonionic surfactants, alkanolamines and magnesium salts, and, optionally, zwitferionic surfactants as suds modifiers. U.S. Patent No. 4,224,195 discloses an aqueous detergent composition for laundering socks or stockings comprising a specific group of nonionic detergents, namely, an ethylene oxide of a secondary alcohol, a specific group of anionic detergents, namely, 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 nonionic surfactant may be the major 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

) affect 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 nonionic surfactant or all anionic surfactant. i U.S. Patent No. 4,450,091 discloses high viscosity shampoo compositions containing a blend of an amphoteric betaine surfactant, a polyoxybutylenepolyoxyethylene nonionic detergent, an anionic surfactant, a fatty acid alkanolamide and a polyoxyalkylene glycol fatty ester. But, none of the exemplified compositions contain an active ingredient mixture wherein the nonionic detergent is

) present in major proportion which is probably due to the low foaming properties of the polyoxybutylene polyoxyethylene nonionic detergent.

U.S. Patent No. 4,595,526 describes a composition comprising a nonionic surfactant, a betaine surfactant, an anionic surfactant and a C12-C14 fatty acid monoethanolamide foam stabilizer.

> Summary of the Invention

It has now been found that a high foaming liquid detergent properties can be formulated with a paraffin sulfonate, ethoxylated alkyl ether sulfate surfactant, an alpha olefin sulfonate, an ethoxylated nonionic surfactant, magnesium ions and water. Accordingly, one object of this invention is to provide novel, high foaming, light duty liquid detergent compositions containing an alpha olefin sulfonate surfactant.

To achieve the foregoing and other objects and in accordance with the purpose of the present invention, as embodied and broadly described herein the novel, high

5 foaming, light duty liquid detergent of this invention comprises an alpha olefin sulfonate, ethoxylated alkyl ether sulfate surfactant, an ethoxylated nonionic surfactant, magnesium ions and water wherein the composition does not contain a dialkyl sulfosuccinate surfactant, a zwitterionic surfactant, an alkyl benzene sulfonate surfactant, a glycol ether solvent, an ethoxylated and/or propoxylated nonionic

⁾ surfactant, an amine oxide surfactant, a mono- or di-saccharides a polyoxyalkylene glycol fatty acid, a builder, a polymeric thickener, an acid, a clay, a fatty acid alkanol amide, abrasive, silicas, tricloscan, alkaline earth metal carbonates, alkyl glycine surfactant, cyclic imidinium surfactant, or more than 0.2 wt. % of a perfume or water insoluble hydrocarbon other than trichlorocarbanilibe.

5 It has also been found that a high foaming liquid detergent properties can be formulated with a paraffin sulfonate, ethoxylated alkyl ether sulfate surfactant, an alpha olefin sulfonate, a surfactant selected from the group consisting of ether carboxylates and amine oxide surfactants and mixtures thereof, magnesium ions and water.

Accordingly, one object of this invention is to provide novel, high foaming, light

) duty liquid detergent compositions containing an alpha olefin sulfonate surfactant.

To achieve the foregoing and other objects and in accordance with the purpose of the present invention, as embodied and broadly described herein the novel, high foaming, light duty liquid detergent of this invention comprises an alpha olefin sulfonate, ethoxylated alkyl ether sulfate surfactant, a surfactant selected from the group

> consisting of ether carboxylates and amine oxides surfactants and mixtures thereof, magnesium ions and water wherein the composition does not contain an alkyl benzene sulfonate surfactant, a glycol ether solvent, an ethoxylated and/or propoxylated nonionic surfactant, a zwitterionic surfactant, a mono- or di-saccharides a polyoxyalkylene glycol fatty acid, a builder, a polymeric thickener, an acid, a clay, a fatty acid alkanol amide, abrasive, silicas, tricloscan, alkaline earth metal carbonates, alkyl glycine surfactant, cyclic imidinium surfactant, or more than 0.2 wt. % of a perfume or water insoluble hydrocarbon other than trichlorocarbanilibe.

^'■> It has also been found that a high foaming liquid detergent properties can be formulated with a paraffin sulfonate, ethoxylated alkyl ether sulfate surfactant, an alpha olefin sulfonate, a surfactant selected from the group consisting of dialkyl sulfosuccinates and zwitterionic surfactants and mixtures thereof, magnesium ions and water.

) To achieve the foregoing and other objects and in accordance with the purpose of the present invention, as embodied and broadly described herein the novel, high foaming, light duty liquid detergent of this invention comprises an alpha olefin sulfonate, ethoxylated alkyl ether sulfate surfactant, a surfactant selected from the group consisting of dialkyl sulfosuccinates and zwitterionic surfactants and mixtures thereof,

. magnesium ions and water wherein the composition does not contain an alkyl benzene sulfonate surfactant, a glycol ether solvent, an ethoxylated and/or propoxylated nonionic surfactant, an amine oxide surfactant, a mono- or di-saccharides, a polyoxyalkylene glycol fatty acid, a builder, a polymeric thickener, an acid, a clay, a fatty acid alkanol amide, abrasive silicas, triclosan, alkaline earth metal carbonates,

) alkyl glycine surfactant, cyclic imidinium surfactant, or more than 0.2 wt. % of a perfume or water insoluble hydrocarbon other than trichlorocarbanilibe. Detailed Description of the Invention

The present invention relates to a light duty liquid detergent which comprises by weight:

> (a) 12% to 30% of a paraffin sulfonate surfactant;

(b) 0.5% to 5% of an ethoxylated alkyl ether surfactant;

(c) 2% to 22% of an alpha olefin sulfonate surfactant;

(d) 0.5% to 5% of an ethoxylated nonionic surfactant; (e) 1 % to 5.5% of magnesium containing inorganic compound;

(f) 0.5% to 6% of a C1-C3 alkanol; and

(g) the balance being water wherein the composition does not contain a glycol ether solvent, a dialkyl sulfosuccinate surfactant, a zwitterionic surfactant, an

> amine oxide surfactant, an alkyl benzene sulfonate surfactant, a polyoxyalkylene glycol fatty acid, a mono- or di-saccharides, a builder, a polymeric thickener, an acid, a clay, a fatty acid alkanol amide, abrasive, silicas, triclosan, alkaline earth metal carbonates, alkyl glycine surfactant, cyclic imidinium surfactant, or more than 0.3 wt. % of a perfume or water insoluble hydrocarbon other than trichlorocarbanilibe.

) The present invention also relates to a light duty liquid detergent which comprises by weight:

(a) 12% to 30% of a paraffin sulfonate surfactant;

(b) 0.5% to 5% of an ethoxylated alkyl ether surfactant;

(c) 2% to 30% of an alpha olefin sulfonate surfactant;

> (d) 0.5% to 5% of at least one surfactant selected from the group consisting of ether carboxylates and amine oxides surfactants and mixtures thereof;

(e) 1 % to 5.5% of magnesium containing inorganic compound;

(f) 0.5% to 6% of a Cι -C3 alkanol; and

(g) the balance being water wherein the composition does not contain a ) glycol ether solvent, an ethoxylated and/or propoxylated nonionic surfactant, a zwitterionic surfactant, an alkyl benzene sulfonate surfactant, a polyoxyalkylene glycol fatty acid, a mono- or di-saccharides, a builder, a polymeric thickener, an acid, a clay, a fatty acid alkanol amide, abrasive, silicas, triclosan, alkaline earth metal carbonates, alkyl glycine surfactant, cyclic imidinium surfactant, or more than 0.3 wt. % of a perfume

> or water insoluble hydrocarbon other than trichlorocarbanilibe.

The present invention also relates to a light duty liquid detergent which comprises by weight:

(a) 12% to 30% of a paraffin sulfonate surfactant; (b) 0.5% to 5% of an ethoxylated a\kγ\ ether surfactant;

(c) 2% to 22% of an alpha olefin sulfonate surfactant;

(d) 0.5% to 5% of at least one surfactant selected from the group consisting of dialkyl sulfosuccinates and zwitterionic surfactants and mixtures thereof;

(e) 1 % to 5.5% of magnesium containing inorganic compound;

(f) 0.5% to 6% of a C1-C3 alkanol; and

(g) the balance being water wherein the composition does not contain a glycol ether solvent, an ethoxylated and/or propoxylated nonionic surfactant, an amine oxide surfactant, an alkyl benzene sulfonate surfactant, a polyoxyalkylene glycol fatty acid, a mono- or di-saccharides, a builder, a polymeric thickener, an acid, a clay, a fatty acid alkanol amide, abrasive, silicas, triclosan, alkaline earth metal carbonates, alkyl glycine surfactant, cyclic imidinium surfactant, or more than 0.3 wt. % of a perfume or water insoluble hydrocarbon other than trichlorocarbanilibe.

The C12-C20 paraffin sulfonates used at a concentration of 12 wt. % to 30 wt.

%, more preferably 14 wt. % to 28 wt. % in the instant compositions may be monosulfonates or di-sulfonates and usually are mixtures thereof, obtained by sulfonating paraffins of 10 to 20 carbon atoms. Preferred paraffin sulfonates are those of C12-18 carbon atoms chains, and more preferably they are of C-i 4-17 chains.

Paraffin sulfonates that have the sulfonate group(s) distributed along the paraffin chain are described in U.S. Patents 2,503,280; 2,507,088; 3,260,744 and 3,372,188 and also in German Patent 735,096. Such compounds may be made to specifications and desirably the content of paraffin sulfonates outside the C14-17 range will be minor and will be minimized, as will be any contents of di- or poly-sulfonates.

The alpha olefin sulfonate surfactants used in the instant composition may be prepared in a known manner by the reaction of sulfur trioxide (SO3) with long-chain olefins containing 8 to 25, preferably 12 to 21 carbon atoms and having the formula RCH=CHR<| where R is a higher alkyl group of 6 to 23 carbons and R-] is an alkyl group of 1 to 17 carbons or hydrogen to form a mixture of sultones and alkene sulfonic acids which is then treated to convert the sultones to sulfonates. Preferred alpha olefin sulfonates contain from 14 to 16 carbon atoms in the R alkyl group and are obtained by sulfonating an a-olefin.

The C8-18 ethoxylated alkyl ether sulfate surfactants have the structure R-(OCHCH2)nOSθ3^M 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, C12-14; C12-15 and M is an ammonium cation or an alkali metal cation, most preferably sodium. The C8-C18 ethoxylated alkyl ether sulfate surfactant is present in the composition at a concentration of 0.5 to 8.0 wt. %, more preferably 1.0 to 7.0 wt. %.

The ethoxylated alkyl ether sulfate may be made by sulfating the condensation product of ethylene oxide and C8-10 alkanol, and neutralizing the resultant 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 sulfates contain 12 to 15 carbon atoms in the alcohols and in the alkyl groups thereof, e.g., sodium myristyl (3 EO) sulfate.

Ethoxylated Cδ-18 alkylphenyl ether sulfates containing from 2 to 6 moles of ethylene oxide in the molecule also are suitable for use in the invention compositions. These detergents can be prepared by reacting an alkyl phenol with 2 to 6 moles of ethylene oxide and sulfating and neutralizing the resultant ethoxylated alkylphenol. The concentration of the ethoxylated alkyl ether sulfate surfactant is 1 to 8 wt. %.

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

The nonionic detergent class includes the condensation products of a higher alcohol (e.g., an alkanol containing 8 to 18 carbon atoms in a straight or branched chain configuration) condensed with 5 to 30 moles of ethylene oxide, for example, lauryl or myristyl alcohol condensed with 16 moles of ethylene oxide (EO), tridecanol condensed with 6 to moles of EO, myristyl alcohol condensed with 10 moles of EO per mole of myristyl alcohol, the condensation product of EO 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 wherein the condensate contains either 6 moles of EO per mole of total alcohol or 9 moles of EO per mole of alcohol and tallow alcohol ethoxylates containing 6 EO to 11 EO per mole of alcohol.

A preferred group of the foregoing nonionic surfactants are the Neodol ethoxylates (Shell Co.), which are higher aliphatic, primary alcohol containing 9-15 carbon atoms, such as C-j *ι alkanol condensed with 9 moles of ethylene oxide (Neodol

1-9), C-12-13 alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5), C-12-15 alkanol condensed with 7 or 3 moles ethylene oxide (Neodol 25-7 or Neodol 25-3), C 4-15 alkanol condensed with 13 moles ethylene oxide (Neodol

45-13), and the like. Such ethoxamers have an HLB (hydrophobic lipophilic balance) value of 8 to 15 and give good O/W emuisification, whereas ethoxamers with HLB values below 8 contain less than 5 ethyleneoxide groups and tend to be poor emulsifiers and poor detergents.

Additional satisfactory water soluble alcohol ethylene oxide condensates are the condensation products of a secondary aliphatic alcohol containing 8 to 18 carbon atoms in a straight or branched chain configuration condensed with 5 to 30 moles of ethylene oxide. Examples of commercially available nonionic detergents of the foregoing type are C<ι 1-C15 secondary alkanol condensed with either 9 EO (Tergitol

15-S-9) or 12 EO (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 condensed with 9.5 moles of EO per mole of nonyl phenol, dinonyl phenol condensed with 12 moles of EO per mole of phenol, dinonyl phenol condensed with 15 moles of EO per mole of phenol and di-isoctylphenol condensed with 15 moles of EO per mole of phenol. Commercially available nonionic surfactants of this type include Igepal CO-630 (nonyl phenol ethoxylate) marketed by

GAF Corporation.

Also among the satisfactory nonionic detergents are the water-soluble condensation products of 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 2.8:1 to 3.3:1 , with the total of the ethylene oxide and propylene oxide (including the terminal ethanol or 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 C Q-C Q alkanol condensate with ethylene oxide and propylene oxide, the weight ratio 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 mono- and tri-C-jo- C20 alkanoic acid esters having a HLB of 8 to 15 also may be employed as the nonionic detergent ingredient in the described composition. These surfactants are well known and are available from Imperial Chemical Industries under the Tween trade name. Suitable surfactants include polyoxyethylene (4) sorbitan monolaurate, polyoxyethylene (4) sorbitan monostearate, polyoxyethylene (20) sorbitan trioleate and polyoxyethylene (20) sorbitan tristearate.

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

The ether carboxylates which can be used in the instant compositions are depicted by the formula:

CH3(CH2)lθCH2(OCH2CH2)nOCH2COONa wherein n is a number from 3 to 12, preferably 6 to 12 and most preferably 10.

The amine oxides which can be used in forming the light duty liquid compositions are depicted by the formula:

R₂

I

R-l — N → O

I R3 wherein Ri is a C10-C18 a linear or branched chain alkyl group, R2 is a C1-C16 linear alkyl group and R3 is a C1-C16 linear alkyl group, or the amido radical:

O H II I

R - C - N - (CH2)a- wherein R is an alkyl group having 9 to 19 carbon atoms and a is the integer 1 to 4: R2 and R3 are each alkyl groups having 1 to 3 carbons and preferably 1 carbon; The zwitterionic surfactant is a water soluble betaine having the general formula:

R2 l⁺ R1 — N— ^R4 x

I R3 wherein X- is selected from the group consisting of COO^" and S0₃. and R-| is an alkyl group having 10 to 20 carbon atoms, preferably 12 to 16 carbon atoms, or the amido radical:

O H

II I

R - C - N - (CH₂)a- wherein R is an alkyl group having 9 to 19 carbon atoms and a is the integer 1 to 4: R2 and R3 are each alkyl groups having 1 to 3 carbons and preferably 1 carbon; R4 is an alkylene or hydroxyalkylene group having from 1 to 4 carbon atoms and, optionally, one hydroxyl group. Typical alkyldimethyl betaines include decyl dimethyl betaine or 2-(N- decyl-N, N-dimethyl-ammonia) acetate, coco dimethyl betaine or 2-(N-coco N, N- dimethylammonia) acetate, myristyl dimethyl betaine, palmityl dimethyl betaine, lauryl dimethyl betaine, cetyl dimethyl betaine, stearyl dimethyl betaine, etc. The amidobetaines similarly include cocoamidoethylbetaine, cocoamidopropyl betaine and the like. A preferred betaine is coco (Cβ-C-iβ) amidopropyl dimethyl betaine. Three preferred betaine surfactants are Genagen CAB and Rewoteric AMB 13 and Golmschmidt Betaine L7.

The dialkyl sulfo succinates which can be used in the instant formula are depicted by the formula:

wherein n is a number from 1 to 5, preferably 3 which is dioctyl sulfo succinate. The magnesium inorganic compound used at a concentration of 1 wt. % to 5.5 wt. %, more preferably 1.5 wt. % to 4.5 wt. % of the instant composition is a magnesium oxide, sulfate or chloride. The magnesium salt or oxide provides several benefits including improved cleaning performance in dilute usage, particularly in soft

> water areas. Magnesium sulfate, either anhydrous or hydrated (e.g., heptahydrate), is especially preferred as the magnesium salt. Good results also have been obtained with magnesium oxide, magnesium chloride, magnesium acetate, magnesium propionate and magnesium hydroxide. These magnesium salts can be used with formulations at neutral or acidic pH since magnesium hydroxide will not precipitate at

) these pH levels.

The water is present at a concentration of 26 wt. % to 86 wt. %.

In addition to the previously mentioned essential and optional constituents of the light duty liquid detergent, one may also employ normal and conventional adjuvants, provided they do not adversely affect the properties of the detergent. Thus, there may

> be used various coloring agents and perfumes; ultraviolet light absorbers such as the Uvinuls, which are products of GAF Corporation; sequestering agents such as ethylene diamine tetraacetates; magnesium sulfate heptahydrate; pH modifiers; etc. The proportion of such adjuvant materials, in total will normally not exceed 15% by weight of the detergent composition, and the percentages of most of such individual components

I will be a maximum of 5% by weight and preferably less than 2% by weight. Sodium formate or formalin can be included in the formula as a perservative at a concentration of 0.1 to 4.0 wt. %. Other preservatives are dibromodicyanobutane, citric acid, benzylic alcohol and poly (Hexamethylene) biguanidium hydrochloride and mixtures thereof. Sodium bisulfite can be used as a color stabilizer at a concentration of 0.01 to 0.2 wt. i %.

The present light duty liquid detergents such as dishwashing liquids are readily made by simple mixing methods from readily available components which, on storage, do not adversely affect the entire composition. Solubilizing agent such as ethanol, sodium chloride and/or sodium xylene or sodium xylene sulfonate are used to assist in solubilizing the surfactants. A preferred solubilizing system is 0.5 to 6.0 wt. % of a C-|- C3 alkanol such as ethanol and 0 to 2 wt. %, more preferably 0.1 to 1.5 wt. % of urea. The viscosity of the light duty liquid composition desirably will be at least 100 centipoises (cps) at room temperature, but may be up to 1 ,000 centipoises as measured with a Brookfield Viscometer using a number 21 spindle rotating at 20 rpm. The viscosity of the light duty liquid composition may approximate those of commercially acceptable light duty liquid compositions now on the market. The viscosity of the light duty liquid composition and the light duty liquid composition itself remain stable on storage for lengthy periods of time, without color changes or settling out of any insoluble materials. The pH of the composition is substantially neutral to skin, e.g., 4.5 to 8 and preferably 5.0 to 7.0. The pH of the composition can be adjusted by the addition of Na2θ (caustic soda) to the composition.

The instant compositions have a minimum foam volume of 300 mis after 40 rotation at 25°C as measured by the foam volume test using 0.033 wt. % of the composition in 150 ppm of water. The foam test is an inverted cylinder test in which 100 ml. of a 0.033 wt. % LDL formula in 150 ppm of H2O is placed in a stoppered graduate cylinder (500 ml) and inverted 40 cycles at a rate of 30 cycles/minute. After 40 inversions, the foam volume which has been generated is measured in mis inside the graduated cylinder. This value includes the 100 ml of LDL solution inside the cylinder.

The following examples illustrate liquid cleaning compositions of the described invention. Unless otherwise specified, all percentages are by weight. The exemplified compositions are illustrative only and do no limit the scope of the invention. Unless otherwise specified, the proportions in the examples and elsewhere in the specification are by weight. Description of the Preferred Embodiments

Example 1 The following formulas were prepared at room temperature by simple liquid mixing procedures as previously described

"Positive results versus a current PS/AEOS technology Preservative is Myacid BT : 2 bromo2-nitropopane -1.3 diol

Example 2 The following formulas were prepared at room temperature by simple liquid mixing procedures as previously described

°positive difference versus a current PS/AEOS technology ¹Presen ative is Myacid BT : 2 bromo2-nitropopane -1.3 diol

Example 3 The following formulas were prepared at room temperature by simple liquid mixing procedures as previously described

"Positive difference versus a current PS/AEOS technology Vreservative is Myacid BT : 2 bromo2-nitropopane -1.3 diol

Claims

WHAT IS CLAIMED IS

1. A light duty liquid detergent composition comprising by weight:

(a) 12% to 30% of a C-i 0-C20 paraffin sulfonate;

(b) 2% to 22% of an alpha olefin sulfonate;

(c) 0.5% to 5% of an ethoxylated alkyl ether sulfate;

(d) 0.5% to 5% of an ethoxylated nonionic surfactant;

(e) 1 % to 5.5% of a magnesium containing inorganic compound; and

(f) the balance being water.

2. A light duty liquid composition according to Claim 1 which includes, in addition, 1% to 6% by weight of a solubilizing agent which is a C1-C3 alkanol.

3. A light duty liquid composition according to Claim 1 further including a preservative.

4. A light duty liquid composition according to Claim 1 further including a color stabilizer.

5. A light duty liquid cleaning composition according to Claim 1 wherein said magnesium containing inorganic compound is magnesium sulfate.

6. A light duty liquid composition according to Claim 2 further including urea.

7. A light duty liquid detergent composition comprising by weight:

(a) 12% to 30% of a C-| 0-C20 paraffin sulfonate;

(b) 2% to 30% of an alpha olefin sulfonate;

(c) 0.5% to 5% of an ethoxylated alkyl ether sulfate;

(d) 0.5% to 5% of at least one surfactant selected from the group consisting of dialkyl sulfo succinates and zwitterionic surfactants and mixtures thereof;

(e) 1% to 5.5% of a magnesium containing inorganic compound; and

(f) the balance being water.

8. A light duty liquid composition according to Claim 7 which includes, in addition, 1 % to 6% by weight of a solubilizing agent which is a C-J-C3 alkanol.

9. A light duty liquid composition according to Claim 7 further including a preservative.

10. A light duty liquid composition according to Claim 7 further including a color stabilizer.

11. A light duty liquid cleaning composition according to Claim 7 wherein said magnesium containing inorganic compound is magnesium sulfate.

12. A light duty liquid composition according to Claim 8 further including urea.

13. A light duty liquid detergent composition comprising by weight:

(a) 12% to 30% of a C-] 0-C20 paraffin sulfonate;

(b) 2% to 30% of an alpha olefin sulfonate;

(c) 0.5% to 5% of an ethoxylated alkyl ether sulfate;

(e) 1 % to 5.5% of a magnesium containing inorganic compound; and

(f) the balance being water.

14. A light duty liquid composition according to Claim 13 which includes, in addition, 1 % to 6% by weight of a solubilizing agent which is a C1-C3 alkanol.

15. A light duty liquid composition according to Claim 13 further including a preservative.

16. A light duty liquid composition according to Claim 13 further including a color stabilizer.

17. A light duty liquid cleaning composition according to Claim 13 wherein said magnesium containing inorganic compound is magnesium sulfate.

18. A light duty liquid composition according to Claim 14 further including urea.