JPS5850680B2 - Aqueous liquid cleaning composition - Google Patents

Abstract

of the Invention An aqueous liquid detergent composition especially adapted for dishwashing, comprising 5-60% by weight of an organic synthetic surfactant system of at least two surfactants, and 5-50% by weight of a citrus juice, said organic synthetic surfactant system consisting of1) from about 30-90 parts by weight of the surfactant system of a Ca-sensitive first surfactant selected from the group consisting Water-soluble C8-16 alkyl benzene sulphonates; alkane sulphonates having 8-20 car-bon atoms; olefin sulphonates having from 8-20 carbon atoms; di-C8-20-alkyl sulpho-succinates; di-C6-12-alkyl phenol sulphosuccinates; primary and secondary alkyl suphates having 8-20 carbon atoms; C8-20 alkyl polyethoxy sulphates having 1-25 ethoxy groups and mixtures thereof, and2) from about 70-10 parts by weight of said system of a less Ca-sensitive second surfactant selected from the group consisting of water-soluble nonionic condensation products obtained by condensing from 5-30 moles of an alkylene oxide, preferably ethylene or propylene oxide with one mole of an organic hydrophobic compound, aliphatic or alkyl aromatic in nature, having 8 to 24 carbon atoms and at least one reactive hydrogen atom, particularly a reactive hydroxyl, amino, amido or carboxyl group; C8-20-alkylsulphobetaines; amines oxides containing one long chain alkyl moiety of from 10-28 carbon atoms and two moieties which can be either alkyl radicals or hydroxyalkyl radicals having from 1-4 carbon atoms; C8-20 alkyl-polyethoxy sulphates having from 1-25 ethoxy groups, and mixtures thereof, said surfactants of group (1) and the ion-active surfactants of group (2) being present in the form of their alkalimetal salts, ammonium salts, or mixtures thereof. The composition is an effective liquid dishwashing composition with improved cleaning performance on difficult soils.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to liquid cleaning compositions with improved cleaning effectiveness.

More particularly, the present invention relates to improved liquid cleaning compositions particularly suitable for manual cleaning of dishes, glass, kitchen utensils, cutlery, and the like.

The liquid cleaning composition of the present invention contains citrus fruit juice, such as lemon juice.

Liquid cleaning compositions containing lemon juice are known in the art.

U.S. Patent No. 3,650,968 has water 30-80
A cleaning composition for removing fish odor is described, which ranges by weight from 0.1 to 35 parts by weight of detergent and from 0.1 to 15 parts by weight of citrus (lemon) juice.

However, these liquid cleaning compositions have very poor dishwashing properties and therefore cannot be satisfactorily used for cleaning dishes, glass, kitchen utensils, cutlery and the like.

It is also an object of the present invention to provide an effective liquid dishwashing composition that is particularly effective against difficult to remove soils.

Another object of the invention is to provide a method for removing difficult stains from dishes, bottles, pots and other kitchen utensils.

By "difficult soil" is meant difficult-to-clean residue such as burnt protein and starch stains.

These and other objects of the present invention which will become apparent below are achieved by combining at least two surfactants as defined below, an organic synthetic leather surfactant system and 5 weight φ of citrus juice based on the total composition. This can be achieved by mixing.

The juice of any citrus fruit belonging to the common species citrus fruits can be used, for example orange [
citrus sinensis
s) ], Daidai [Cinthrus aurantechium (
citrus auranticum)), Chinese mandarin orange [citrus reticulata
iculata)), grapefruit (citrus paradisi)
, pumelos (citrus grandis), lemon (citrus limon)
], lime fruit [Citrus aurantehoria (citr)
us aurantifolia) ':l, Quen (citrus medica)
, papeda (Citrus hystrix) and Karatachi (Citrus trifoliata) can be used, although lemon juice is preferred in the present invention from the standpoint of ensuring consumer acceptance. .

The range of fruit juices indicated herein refers to single strength fruit juices unless otherwise indicated.

The term "single strength" is used to indicate the average strength of the fruit juice squeezed from the fruit.

If concentrated juice is used, it is expressed by indicating a concentration factor, eg 4×concentration.

Accordingly, the compositions of the present invention are particularly designed for general use in conventional dishwashing, and can be used in concentrated aqueous form or in conventional high dilution dishwashing operations to provide a consumer-acceptable amount of suds and foam. A good cleaning effect with stability can be achieved.

Accordingly, the liquid detergent composition of the present invention comprises at least two surfactants, an organic synthetic surfactant system of about 5 to 60 parts by weight, as shown below, and at least 5 parts by weight of citrus juice.

Organic synthetic detergent systems include a) water-soluble C8-C16 alkylbenzene sulfonates, alkanesulfonates having 8 to 20 carbon atoms, olefin sulfonates having 8 to 20 carbon atoms, di-C8-26 alkyl sulfosuccinates; , di-C612 alkylphenol sulfosuccinates, primary and secondary alkyl sulfates having 8 to 20 carbon atoms, C8-28 alkyl polyethoxy sulfates having 1 to 25 ethoxy groups and mixtures thereof. C selected from the group
a sensitive first surfactant having about 30 to 90 parts by weight of the surfactant system; a) 50 to 30 moles of alkylene oxide, preferably ethylene or propylene oxide, and 8 to 24 carbon atoms; and a water-soluble nonionic compound obtained by condensation with 1 mol of an organic hydrophobic compound, aliphatic or alkyl aromatic in nature, having at least one reactive hydrogen atom, in particular a reactive hydroxyl, amine, amide or carboxyl group. The condensation product, C8-2o alkylsulfobetaine, can be one long chain alkyl moiety with 10 to 28 carbon atoms and an alkyl group with 1 to 4 carbon atoms or a hydroxyalkyl group Amine oxide containing two moieties that can
C8- having 1 to 25 ethylene oxide groups
a Ca-insensitive second surfactant selected from the group consisting of 26-alkyl polyethoxy sulfates and mixtures thereof, comprising about 70 to 10 parts by weight of the surfactant system; Agents and group (b) ionically active surfactants include their alkali metal salts, ammonium salts, lower alkanolamine salts,
Present in the form of lower alkylamine salts or mixtures thereof.

Examples of nonionic water-soluble condensation products obtained by condensing 5 to 30 mol of alkylene oxide with 1 mol of an organic hydrophobic compound are: a) ethylene oxide and aliphatic linear or branched chains of more than 8 carbon atoms; chains, condensates with primary or secondary alcohols, such as tallow or coconut fatty acids containing 5 to 20 ethylene oxide groups and branched chains C11-Cl condensed with 5 to 20 ethylene oxide groups.
b) condensates of ethylene oxide and alkylphenols, in which the phenols may be mono- or polyalkylated and the total number of carbon atoms in the side chains or chains is from 5 to 18;

C) condensates of ethylene oxide and fatty acid esters, preferably monofatty acid esters of sugar alcohols, sorbitol and mannitol, d) ethylene oxide and natural fatty acids or 8 to 2
Synthetic fatty acids prepared from oxidized paraffin wax with 0 carbon atoms, or polyethenoxy obtained by reaction with carboxylic acids, which are alkylbenzoic acids or naphthenic acids with 5 to 18 carbon atoms in the alkyl chain. ester, e) c717 alkyl-C0-NHC2H40H1
C7-17 alkyl-condensation products of fatty acyl alkanolamides of type C0-N(C2H,0H)2 with ethylene oxide; f) condensation products of c818 alkyl-1c818 alkenyl- and C8-18 alkylarylamines with ethylene oxide; A special example is the condensation product of 1 mole of dodecylamine and 9-12 moles of ethylene oxide.

Specific examples of amine oxides are dimethyldodecylamine oxide, diethyltetradecylamine oxide, bis-
(2-hydroxyethyl)-dodecylamine oxide and dimethyl-2-hydroxydodecylamine oxide.

The surfactant system defined above can be used effectively in combination with citrus juices, especially lemon juice, over a wide pH range, in fact from acidic pH to alkaline IJ p)l, e.g. and, in the properties listed above, have the desired combined effect of good cleaning properties, good foam behavior and excellent performance in removing difficult soils, especially burnt or dry deposited protein or starch soils. It has been found.

The preferred pH range for compositions of the invention is about 5.5 to 9.
, especially 6-8.5, and even 7-8.5.

Any combination of the first and second surfactants described above can be used in the compositions of the present invention to form an organic synthetic surfactant system.

Typical examples of surfactant systems are alkylbenzene sulfonate/alkyl polyethoxy sulfate mixtures, alkyl benzene sulfonate/alkyl polyethoxy sulfate/nonionic surfactant mixtures, alkyl sulfate/alkyl benzene sulfonate/alkyl polyethoxy sulfate mixtures, and alkyl sulfate/alkyl polyethoxy sulfate mixtures. It is an ethoxysulfate/amine oxide mixture.

As explained above, any type of citrus juice can be used in the present invention in an amount from 5 oz.
Lime, orange and grapefruit juices are representative examples of common species.

Since lower amounts of citrus juice have little or practically no effect, 5 weights of citrus juice is the minimum amount.

Although in principle any proportion of citrus juice of 5 or higher that is practically possible may be used, it has been found that high proportion amounts are not necessary to achieve the high desired benefits.

Moreover, the increase in performance improvement by increasing the juice content above a factor of 10 clearly decreases, especially rapidly in the high φ range, so using too high a proportion of juice may result I cannot afford very high expenses.

Advantageously, 50 parts and preferably 25 parts are convenient practical upper limits for single strength citrus juice in the compositions of the present invention; at concentrations above these parts the citrus juice no longer contains the excess citrus juice. There is no profit to compensate for the price.

The amount of citrus juice most advantageously used in the liquid cleaning compositions of the present invention is from about 5 to about 10 by weight.

The present invention therefore comprises an organic synthetic surfactant system comprising 5 to 60% by weight of at least two surfactants as defined above and 5 to 50% by weight of citrus juice, which is particularly suitable for dishwashing. Further, it provides an aqueous liquid cleaning composition having improved cleaning performance especially on difficult soils.

Citrus juices are readily available in the market.

They are generally provided as single strength juices or as concentrates of various strengths, such as 2x to 1°x concentrates.

Lemon juice contains a large number of different types of compounds including acids, sugars, amino acids, fats and oils, and trace elements.

Analytical data for citrus juices can be found in the following documents:

a) Chemical Constituents of Citrus Fruit (Ch.
chemical conditions of C1
trusFruitsj Expanded Edition 2 (1970) b) Nido A-C-Hulme (Ed-A-C-Hulme)
"Biochemistry of Fruit and Their Products" by
yof Fruits and their Prod
ucts ) J Volume 1 (1970) In various types of horsemeat, there are some different components that can be separated and determined by analysis.

The predominant acid in citrus juices is citric acid, present in an amount of about 5 to 6% by weight.

The ingredients present in the citrus juice that are responsible for improving the cleaning effect are not precisely known, but the interface with one or more ingredients present in the citrus juice used in the composition of the invention is not known. It is believed that the combination of active agent systems creates a synergistic effect.

In addition to the above essential ingredients, the liquid cleaning compositions of the present invention can optionally contain other non-essential materials.

Such optional ingredients may include additional surfactants other than those described as the first and second surfactants of the organic synthetic surfactant system, to promote the cleaning and stain removal efficiency of the surfactants of the composition. builder salts, such as phosphates, polyphosphates, phosphonates, carbonates, polyacetates and polycarboxylates, foam promoters, such as coconut oil fatty acid jetanolamide, hydrotrope agents and solubilizers, Examples are 2 to 4
Lower alkanols containing 5 carbon atoms, especially ethanol, urea, sodium or potassium toluene sulfonate and sodium or potassium xylene sulfonate, since they generally promote phase stability of the composition, especially at high concentrations of surfactants. ), preservatives, flavorings and coloring agents.

Furthermore, if desired, an acidic or alkaline substance for adjusting pH and a scouring agent may be added to the cleaning composition of the present invention.

A preferred composition has 10 to 50% by weight of the organic synthetic surfactant system, 5 to 25% by weight of lemon juice, and about 15 to 75% by weight of water.

Particularly preferred are those having an active detergent content of 35% by weight or more.

The invention is illustrated in the following examples.

Example I-I The following composition was prepared.

The following half-tile comparison test method was used to determine the relative ease of cleaning of burnt-on stains from the screen after soaking.

A soiled substrate in the form of a square enamel tile (10 x 10 cIrL) is immersed in a test product solution 11 with a concentration of 0.151°C.

Start the test with the solution at 45°C and reheat when it drops to 40°C (using a small immersion coil).

The tiles are checked until the soil on one tile is softened and then removed entirely from the test solution for the first signs of cleanliness (soak times vary from 5 to 50 minutes).

Brillo Slice sponge soaked in the appropriate test solution (
Wash for 30 seconds using Br1llo 5w1sh sponge).

How to stain and stain Fruit pie fillings (Fruit piefilli)
ng ) Cherry and Apricot (Cherry)
y and Apricot) and a mixture of flour and fruit pie filling (1:4).

The pie filling is finally mashed by pressing through a 240μ sieve to form a fine paste from the flour/pie filling mixture.

The stain is applied to the substrate in two passes with the screen summer dye.

Large oven [Gallenkampf oven (Galler)
kamp 0ven) 1 type 0V330] at the center of 4
Bake for minutes.

The temperature must be 250°C before placing the soiled substrate in the oven, and it is desirable that the rate of loading the substrate into the oven does not drop below 220°C.

result As fully shown in Table 1 below.

Evaluation was made by a professional judge who judged the degree of stain removal according to the following criteria.

0 = Completely clean 1 = Still slightly soiled 2 = Moderately soiled 3 = Very soiled 4 - No cleaning action Average of 8 result ratings for each product and control did.

Product A was used as a control. From the above results, the lemon juice composition of the present invention 1. It is clear that II and ■ are superior to compositions A and B, which are outside the scope of the present invention.

Example 1 The influence of p)l was investigated by evaluating the performance of the following liquid compositions in an immersion test.

Composition Sodium Dodecylbenzenesulfonate 29.0 C12 alkyl ether sulfate containing 3 ethylene oxides 14. Oφ lemon juice 10.0φ ethyl alcohol 5.5 urea
5.5 Water + preservative
Comparisons were made using standard enamel tiles (10XI 0crIL) stained and baked with apricot pile filling/flour as in Example I-1, Section 36.0.

A half tile comparison* comparison test was carried out in water at 45° C. with a German hardness of 11.3°.

Test products were tested in a random manner and all tests were repeated.

Dilute sulfuric acid (0,1M) and dilute sodium hydroxide (0,1
M) solution was used to adjust the pH at 45° C. and the final pH measurement of each test was also taken.

A product of the above nominal composition without lemon juice was used as a control.

The degree of soiling remaining on each half tile was evaluated by an expert judge using the following criteria:

O = Completely clean 1 = Still slightly soiled 2 - Moderately soiled 3 = Very soiled 4 = No cleaning action These evaluations were averaged to give each test product at each pH value and 6 results for the control), the difference in staining between the control and the test product was calculated.

The above table shows that the composition of the present invention has a pH of 5,5,7°0,8.5.
and 10.0, indicating excellent agreement, p
This shows that the results for H8.5 are particularly good.

The method used is as follows.

(1) Egg stain was prepared by carefully mixing dried egg powder and water in a 1:1 ratio.

(2) 5CIr in the center of 30×25crrL glass tile
The stains on the L strips were screen printed.

(3) Bake the tiles at 200°C for 30 minutes.

Five evaluations were made across each tile.

At least two control evaluations were performed for each tile.

(4) Cut 5 5Cs across the tile using viscosity strips for crafting.
An IrL depression was created.

6 ml of solution (0.15%) was placed in the well.

Using a J-face coated head and a 1°5kg weight, 5c
The number of rubs to clean the IIL strip was recorded.

(5) The results of the test solution were calculated as the performance of the closest control in the tile.

The results of a test using 50H water are shown below.

The above results clearly show that the performance of compositions 1 to 6 of the present invention containing 5 to 50 parts of lemon juice, respectively, on baked eggs is superior to the control.

Examples ■ Standard dishwashing test to test dishwashing ability and Example I
The following compositions were compared in a test to determine their relative ease of cleaning baked-on soils from substrates after soaking using the test method described in -H.

A standard dishwashing test was conducted using the following test conditions.

Product temperature: 0.15% and 0.45φ solution concentration: 45°C Standard gravy stain El/plate: fat, starch, oleic acid and stearic acid The results are shown in the table below.

Test results to determine the relative ease of cleaning baked-on soils from substrates.

The evaluation summarized the results of five replicates of each product used at 0.75% concentration.

The above results clearly show that Composition (1) of the present invention outperforms Composition (1) in the comparative test of dishwashing and baking stain removal performance.

Example ■−■ The following liquid dishwashing compositions are within the scope of this invention.

Claims (1)

[Scope of Claims] 1 Consists of at least two surfactants, an organic synthetic surfactant system (5 to 60% by weight) and a citrus juice (5 to 50% by weight), wherein the organic synthetic surfactant system is (a) water-soluble; c816 alkylbenzene sulfonate,
Alkanesulfonates with 8 to 20 carbon atoms, olefin sulfonates with 8 to 20 carbon atoms, diC8-2o alkyl sulfosuccinates, diC6-1□alkylphenolsulfosuccinates, 8 to 20 C selected from the group consisting of primary and secondary alkyl sulfonates having 1 to 25 carbon atoms, C8-2o alkyl polyethoxy sulfates having 1 to 25 ethoxy groups, and mixtures thereof.
a sensitive first surfactant, about 30 to 90 parts by weight of said surfactant system, and (b) 5 to 30 moles and 8 to 24 moles of alkylene oxide, preferably ethylene or propylene oxide.
carbon atoms and at least one reactive hydrogen atom, in particular a reactive hydroxyl, amino, amido or carboxyl group. A water-soluble nonionic condensation product obtained by condensation, c820 alkyl sulfobequin, one long chain alkyl moiety with 10 to 28 carbon atoms and an alkyl group with 1 to 4 carbon atoms. or amine oxides containing two moieties that are hydroxyalkyl groups, C8-2o alkyl-polyethoxy sulfates having 1 to 25 ethoxy groups, and mixtures thereof. 2 surfactants, about 70 to 10 parts by weight of said surfactant system, wherein said surfactants of group (a) and ionically active surfactants of group (middle) are their alkali metal salts, ammonium salts, An aqueous liquid detergent composition particularly suitable for dishwashing, characterized in that it is present in the form of lower alkanolamine salts, lower alkylamine salts or mixtures thereof. 2. The composition of claim 1, wherein the citrus juice is present in an amount of 5 to 25 parts by weight of the composition. 3. A composite acid composition according to claim 1, wherein the citrus juice is present in an amount of 5 to 10 parts by weight of the composition. 4 Claim 1 in which the pH is 5.5 to 9
Compositions as described in Section. 5. The composition of claim 1, wherein the organic surfactant system is present in an amount greater than 35% by weight of the composition.