KR20150059580A - Liquid detergent composition - Google Patents

Abstract

The present invention relates to a liquid detergent composition. The liquid detergent composition of the present invention comprises an anionic surfactant, a nonionic surfactant, an alkali builder, an electrolyte, and a solubilizer of a proper concentration ratio. The composition uses the anionic surfactant, the nonionic surfactant, and the alkali builder with the proper concentration ratio, contains the alkali builder improving cleaning power and secures stability in the composition, can be stored and used for a long time and can maintain high transparency, has excellent usability and cleaning power, and is economical.

Description

[0001] LIQUID DETERGENT COMPOSITION [0002]

The present invention relates to a liquid detergent composition, and more particularly, to a liquid detergent composition having improved transparency and stability so that a transparent image can be maintained while using an alkali builder for improving cleaning power.

In recent years, the use of liquid laundry detergents has been increasing in domestic and worldwide, which is intended to compensate for disadvantages such as scattering of powder with conventional powder type detergent and poor storage stability over a long period of time. However, such a liquid detergent has disadvantages in that it can be used and stored for a long time without deterioration such as phase separation due to storage stability and viscosity stability under various climatic conditions, and also has a disadvantage that detergency is lower than that of powder detergent. Research and development is underway. Particularly, in order to increase the detergency of the liquid detergent, various kinds of surfactants are mixed in various ratios, or an alkali builder is added. In this case, raising the concentration of the surfactant may be disadvantageous in terms of cost, and the phase may become opaque. Even when the alkali builder is applied, the viscosity of the liquid detergent composition becomes too high, or the phase becomes unstable, And there is a problem that a precipitate is formed. In addition, conventionally, a lot of phosphate builders have been used as alkaline builders, but there are a lot of restrictions in applying them to liquid detergents.

To improve this point, U.S. Patent No. 4,921,629 discloses a method for improving the cleaning performance by using an alkaline builder, and Korean Patent Laid-Open Publication No. 2011-0019118 also discloses the use of a builder in a liquid detergent composition. However, in order to stabilize the builder in the liquid detergent, there is a problem that the concentration of the surfactant should be increased or the micelle of the surfactant should be made into a complicated structure.

Therefore, it is an important task to control the composition ratio of the surfactant, water, and alkali builder so as to be advantageous in terms of cost while using the alkali builder. That is, this is a problem caused by the difference in solubility of alkali builders and surfactants in water. Builders may have unstable phases if they have too high an alkali, and may have poor performance if they have too low alkali. As a result, Forming or opaque compositions can be made, there is a need to find a suitable compositional range within the composition that does not cause such problems.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a liquid detergent composition comprising an anionic surfactant, a nonionic surfactant, an alkali builder, an electrolyte and a solubilizing agent in a proper concentration ratio, Is to provide a liquid detergent composition that maintains transparency while maintaining the cleaning power and the cleaning duration, and is stable at low temperatures.

However, the problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to a first aspect of the present invention, 1 to 40% by weight of an anionic surfactant; 1 to 40% by weight of a nonionic surfactant; 0.5 to 15% by weight alkali builder; 0.5 to 15% by weight electrolyte; And 0.5 to 30% by weight of a solubilizing agent, wherein the anionic surfactant: the nonionic surfactant is in a weight ratio of 1: 10 to 10: 1.

The liquid detergent composition may further comprise 0.5 to 10% by weight of a hydrotrope.

The hydrotrope may be selected from the group consisting of cumene sulfonate, toluene sulfonate, xylene sulfonate, and an alkyl polyglucoside system having a linear or branched alkyl or alkenyl group.

The alkali builder may be a monovalent or multivalent organic or inorganic acid salt such as a bicarbonate, a carbonate, a phosphate, a polyphosphate, a pyrophosphate, a triphosphate, a tetrapolyphosphate, a silicate, a metasilicate, a polysilicate, a hydroxide, an alkali metal salt, May be selected from the group consisting of < RTI ID = 0.0 >

The electrolyte may be a monovalent or multivalent organic or inorganic acid salt selected from the group consisting of a chloride, a bromide, an iodide, a nitrate, a citrate, a sulfate, and a mixture thereof.

The solubilizing agent may be selected from the group consisting of polyethylene glycol, glycerin, propylene glycol, alkanols having 1 to 4 carbon atoms, alkylaryl sulfonates, carboxylic acid sulfates, carboxylic acid sulfonate salts, urea, hydrocarboxylates, carboxylates, Mixtures may be used. The alkanol having 1 to 4 carbon atoms may be methanol, ethanol, propanol, isopropanol, linear or branched butanol, and the like.

The liquid detergent composition may have a transparency of 1 to 20 NTU.

The liquid detergent composition may have a viscosity of 10 to 1000 cP.

The liquid detergent composition may further include at least one additive selected from the group consisting of organic solvents, detergent auxiliaries, stabilizers, enzymes, preservatives, flavors, dyes, viscosity controlling agents, metal ion poisons, thickeners and pH regulators .

The pH of the liquid detergent composition may be most effective when the pH is 8 to 11, but is not limited to the pH.

The present invention relates to a liquid detergent composition which stabilizes a liquid detergent composition even in the presence of an alkali builder by using an appropriate concentration ratio of an anionic surfactant and a nonionic surfactant to secure a detergency and a cleaning sustainability, Lt; / RTI > That is, the present invention solves the problems of conventional liquid detergents which have a phenomenon that precipitates are generated or become opaque when they contain alkali builders, and can improve cleaning power while maintaining the stability and transparency of the liquid detergent.

Hereinafter, embodiments of the present invention will be described in detail. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, terms used in this specification are terms used to appropriately express the preferred embodiments of the present invention, which may vary depending on the user, the intention of the operator, or the practice of the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

The liquid detergent composition of the present invention comprises 1 to 40% by weight of an anionic surfactant; 1 to 40% by weight of a nonionic surfactant; 0.5 to 15% by weight alkali builder; 0.5 to 15% by weight electrolyte; And 0.5 to 30 wt% of a solubilizing agent, wherein the anionic surfactant: the nonionic surfactant has a weight ratio of 1:10 to 10: 1.

The anionic surfactant is preferably a sulfonate-based anionic surfactant, a sulfate-based anionic surfactant, or a mixture thereof.

It is known that an ionic surfactant, especially an anionic surfactant, has excellent detergency when it is required to exhibit cleaning power. When two or more of them are used in combination with a single anionic surfactant, the synergistic effect It is preferable to use a mixture of a sulfonate-based anionic surfactant and a sulfate-based anionic surfactant.

Preferred sulfonate anionic surfactants include alkylbenzenesulfonates, olefin sulfonates, secondary alkanesulfonates, alpha sulfonate methyl / ethyl esters, or alkyl benzene sulfonates in which the alkyl group is a linear or branched alkyl having 9 to 18 carbon atoms, May be used. More specifically, an alkylbenzene sulfonate having 9 to 15 carbon atoms, preferably an alkylbenzene sulfonate having an alkyl group having 12 to 15 carbon atoms, or an alkane sulfonate having 12 to 18 carbon atoms, preferably an alkane sulfone having 14 to 16 carbon atoms Or an olefin sulfonate having 8 to 18 carbon atoms, preferably an olefin sulfonate having 12 to 18 carbon atoms can be used. Other sulphonate-based anionic surfactants may also be used, such as the alpha-sulphonate methyl / ethyl ester of alpha-sulfo fatty acids, such as coconut oil, palm kernel oil and tallow fatty acid.

The preferred sulfate anionic surfactant may be an alkyl ether sulfonate represented by the following formula (1)

In the formula (1)

R ₁ is an alkyl group having a carbon number of 8 to 16, preferably an alkyl group having a carbon number of 10 to 16, more preferably an alkyl group having a carbon number of 12 to 14,

M is a cationic salt, preferably sodium, potassium, ammonium or alkanolammonium, more preferably sodium,

n is an integer of 1 to 6, preferably an integer of 1 to 5, more preferably an integer of 2 to 5.

Other preferred sulfate anionic surfactants include sulfuric acid monoester compounds of primary or secondary alcohols having 8 to 18 carbon atoms, sulfuric acid monoester compounds of aliphatic primary alcohols containing 1 to 6 ethylene oxides, ethoxylated secondary alcohols Sulfuric acid monoester compounds of alkylphenols, sulfated fatty acid alkanolamide, sulfated fatty acid monoglycerides or mixtures thereof may be used.

The nonionic surfactant, which is one component of the liquid detergent composition of the present invention, can be usually those used in the field. Preferable examples of the nonionic surfactant include primary or secondary alcohol type nonionic surfactants having a linear or branched alkyl or alkenyl group having 8 to 22 carbon atoms and containing from 1 to 25 mol of ethylene oxide, Or an alkylpolyglycoside-based nonionic surfactant having a branched alkyl or alkenyl group may be used. As the fatty acid amide type nonionic surfactant, a fatty acid amide having a linear or branched alkyl or alkenyl group having 8 to 22 carbon atoms and having a fatty acid amide type in the form of ammonia amide, monoethanol amide, diethanol amide or isopropanol amide Nonionic surfactants can be used. More specifically, it includes alkylpolyalkylene glycols having 8 to 22 carbon atoms, alkylaryl polyalkylene glycols, fatty alcohol polyoxyethylene glycols, fatty acid polyoxyethylene glycols, alkyldimethylamine oxides, di-alkylmethylamine oxides, Propylamine oxide, alkylglucamide, alkylpolyglucoside oxylated phytate, and alkylamine. At this time, the alkyl group of the above compounds may be substituted with an alkene group, and the number of carbon atoms is preferably 8 to 22, and it may be linear or branched. The alkyl polyalkylene glycol preferably contains 1 to 20 ethoxy or propoxy units.

The surfactant content of the liquid detergent composition of the present invention is 1 to 40% by weight of an anionic surfactant and 1 to 40% by weight of a nonionic surfactant, and the anionic surfactant is 1:10 to 10: 1.

However, the content ratio of the anionic surfactant: nonionic surfactant may be varied depending on the performance goals of the product, but is not limited thereto.

More specifically, the content of the anionic surfactant with respect to the nonionic surfactant content may be 0.1 to 10 times, preferably 0.5 to 2 times (preferably, the ratio of anionic surfactant to nonionic surfactant Is 1: 2 to 2: 1). The surfactant monomers are combined to form a micelle. The micelle structure can be variously changed into spherical, rod-like, lamellar, and the like depending on the surfactant concentration and kind. Therefore, When the combination ratio of ion and anionic surfactant is in the above range, the surfactant shows proper physical property to form an appropriate micelle structure.

In addition, the anionic surfactant and the nonionic surfactant are preferably contained in the liquid detergent composition of the present invention in an amount of 1 to 40 wt%, more preferably 1 to 20 wt%, respectively.

The liquid detergent composition of the present invention comprises an alkaline builder, which serves to increase the repulsive force between the laundry and the contaminant in the composition, thereby exhibiting an effect of increasing the detergency of the liquid detergent composition.

As the alkali builder, any component that is completely dissolved in water can be used. (Here, completely dissolved in water means that the detergent is completely dissolved in water at 20 DEG C on the basis of the standard usage amount of the laundry detergent.) A typical standard usage amount is 30 mL of detergent per 30 liters of water. More specifically, As the mono- or multivalent organic or inorganic acid salts, bicarbonates, carbonates, phosphates, polyphosphates, pyrophosphates, triphosphates, tetraphosphates, silicates, metasilicates, polysilicates, hydroxides, alkali metal salts or mixtures thereof may be used. Sodium, potassium, calcium, magnesium, zinc, aluminum, iron, and the like can be used as the counter cation of the anion of such a salt.

In addition, the feature of the present invention is that the surfactant should be selected in order to apply the builder more stably, and in particular, the main object of the present invention is to control the ratio of the surfactant. The reason and mechanism is that when the builder and the surfactant are mixed, the phase is unstable if the builder has too high an alkali because of the difference in solubility in water, and if it is too low, the performance may be deteriorated. It is also important to control the content of the surfactant, water, and builders by adjusting the composition of the range should be set not to precipitate. Phosphates and phosphonates, builders whose usage is restricted in Korea, should pay attention to the content setting.

Thus, the content of the alkali builder may be from 0.5 to 15% by weight, more preferably from 1 to 10% by weight, based on the liquid detergent composition. If the content of the alkali builder is less than 0.5% by weight, the increase of the cleaning power is insignificant. If the content is more than 15% by weight, the solubility may deteriorate and precipitation may occur.

The liquid detergent composition of the present invention may comprise an electrolyte. In a composition containing a surfactant, the electrolyte exhibits an increasing effect, and exhibits various effects such as enhancing dispersion stability of effective particles and bubbles.

As the electrolyte, a chloride, a bromide, an iodide, a nitrate, a citrate, a sulfate, or a mixture thereof may be used as a monovalent or multivalent organic or inorganic acid salt. More preferably, chlorides, citrates, sulfates or mixtures thereof may be used. Sodium, potassium, calcium, magnesium, zinc, aluminum, iron and the like can be used as the counter cation of the anion of such salt.

The content of the electrolyte is preferably 0.5 to 15% by weight, more preferably 1 to 10% by weight, based on the liquid detergent composition. When the content of the electrolyte is less than 0.5% by weight, the effect of increasing the electrolyte and the stability of the dispersion are lowered. When the content of the electrolyte is more than 15% by weight, the salts of the electrolyte may interfere with the structuring of the surfactants.

As a constituent component of the liquid detergent compositions of the present invention, the solubilizer serves to maintain the surfactant in a stable state. Examples of the solubilizer include polyethylene glycol, glycerin, propylene glycol, alkanol having 1 to 4 carbon atoms, alkyl Aryl sulfonates, carboxylic acid sulfates, carboxylic acid sulfonate salts, urea, hydrocarboxylates, carboxylates or mixtures thereof may be used. The alkanol having 1 to 4 carbon atoms may be methanol, ethanol, propanol, isopropanol, linear or branched butanol, and the like.

The solubilizing agent is used in an amount of from 0.5 to 30% by weight, more preferably from 5 to 20% by weight based on the liquid detergent composition. If the solubilizing agent is less than 0.5% by weight, the solubilizing effect is not sufficiently exhibited. There is a fear that the viscosity becomes very low.

And may further include a hydrotrope as one component constituting the liquid detergent compositions of the present invention. The hydrotrope serves to dissolve the surfactant more stably in the liquid detergent composition, and plays a role of enhancing the dissolution stability particularly when using an alkali builder. Preferred hydrotropes are selected from the group consisting of Cumene Sulfonate, p-toluene sulfonate, Xylene Sulfonate, alkylpolyglycosides having a straight chain or branched alkyl or alkenyl group In particular, the alkylpolyglycoside system can increase the efficiency by adjusting the length of the carbon group of the alkyl group.

The hydrotrope is contained in an amount of 0.5 to 10% by weight, more preferably 1 to 5% by weight based on the liquid detergent composition. If the amount is less than 0.5% by weight, the solubilization effect is not sufficiently exhibited, There is a possibility that the viscosity becomes very low.

The liquid detergent composition of the present invention may have a transparency of 1 to 20 NTU. As used in the specification, the term "transparent composition" means that the NTU value determined by the clarity test below is 20 or less, more preferably about 10 or less .

When the liquid detergent composition of the present invention is mixed with each raw material, the viscosity according to the product should be controlled. In order to control the viscosity, a desired viscosity can be obtained by varying the amount of the solubilizing agent and surfactant in an appropriate amount. In particular, the viscosity of the liquid detergent composition of the present invention is preferably in the range of 10 to 1000 cP, more preferably in the range of 50 to 1000 cP, while maintaining the room temperature (25 DEG C). However, when the viscosity is less than 10 cP, the viscosity of the product may be too low for the consumer to use, which may be inconvenient to use. When the product contains effective particles due to its prescription characteristics, the dispersion state is not stable at a temperature of -15 to 40 캜, When the viscosity is more than 1000 cP, the viscosity is too high and it is difficult to use.

The liquid detergent composition of the present invention may contain, in addition to the above-described components, a fatty acid, an organic solvent, a detergent aid, a stabilizer, an enzyme, a preservative, an incense, a dye, , A metal ion activator, a thickener, and a pH adjuster.

The fatty acid of the present invention serves as a vesicle in the liquid detergent or contributes to the stabilization of the pH and the like. The fatty acid may be a fatty acid having 8 to 18 carbon atoms.

As the thickening agent of the present invention, inorganic salts such as sodium chloride, water-soluble polymers such as hydroxyethyl cellulose and xanthan gum, and fatty acid alkanolamides are known. Among them, the fatty acid alkanolamide is used in combination with a surfactant such as an alkyl ether sulfate type surfactant as well as a thickening effect and is widely used because it has a bubble increasing effect.

Mono- or polyhydric alcohols may be used as the organic solvent. Specifically, methanol, ethanol, propanol, isopropanol, butanol, glycerin and a mixture thereof having a carbon number of 1 to 4 can be used.

The fragrance can be a normally used aromatic compound, and can be chemically synthesized or extracted from natural materials and known in the art.

The preservative is not limited to ethanol, phenoxyethanol, benzisothiazolinone, methylchloroisothiazolinone, methylisothiazolinone, pentyneol, parabens, sodium benzoate and the like.

The pH adjusting agent is excellent in the effect of removing stains and can be any low molecular weight organic or any organic compound which provides neutrality. Preferred are monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide, a liquid alkaline agent of potassium hydroxide, and citric acid, malic acid, salicylic acid, tartaric acid, lactic acid, acetic acid, sorbic acid and benzoic acid.

The pH of the liquid detergent composition of the present invention may range from 8 to 11. It is preferable that the pH is 8.5 to 9.5. Exceeding pH 11 may cause skin problems when exposed to human body.

The metal ion sulfonating agent may be used to increase the formulation and phase stability of the liquid composition of the present invention and may be selected from the group consisting of EDTA, EDTA-2Na, EDTA-4Na, DTA, NTPA, phosphates, polyacrylic acid, gluconic acid, sorbates, At least one member selected from the group consisting of sulfur, nitrogen, and sulfur.

Further, the enzyme is used for further increasing the washing effect of the liquid detergent composition, and mainly alkaline proteolytic enzyme can be used, and specifically, it can be selected from the group consisting of protease, lipase, amylase, and mixtures thereof. The content of the enzyme is preferably 0.01 to 1% by weight, which is a typical range of the enzyme for the whole composition.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Preparation of Examples and Comparative Examples

A liquid detergent composition was prepared with the compositions and contents shown in Tables 1 and 2 below. And mixed by stirring so as to be a homogeneous liquid phase. As the components of Examples 1 to 3 in Table 1, sodium alkyl ether sulfate as an anionic surfactant and polyoxyethylene alkylether as a nonionic surfactant were mixed at a ratio of 1: 1 (Example 1) or 2: 1 (Example 2). In Example 3, 2% by weight of lauryl / myristyl glucoside was added as a nonionic surfactant. As a result, the ratio of anionic surfactant to nonionic surfactant was 1: 1 And hydrotroctaoctyl glucoside was used. In the case of Comparative Example 1, only polyoxyethylene alkyl ether was used. In the examples, 5% by weight of sodium bicarbonate was used as the alkali builder, sodium chloride was used as the electrolyte, and propylene glycol was used as the solubilizing agent. Other examples include fatty acids , pH adjusters and water. On the other hand, in Comparative Example 2, sodium carbonate was used as an alkali builder and the ratio of nonionic to anionic was 1: 1. In Comparative Examples 3 and 4, only sodium dodecylbenzenesulfonate was used as an anionic surfactant, and 15 wt% (Comparative Example 3) or 20 wt% (Comparative Example 4) of sodium triflosphate as an alkali builder (Comparative Example 4) And other ingredients including fatty acid, pH adjuster, thickener and water.

ingredient Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Sodium dodecylbenzenesulfonate 20 20 Sodium alkyl ether sulfate 10 10 10 2 Polyoxyethylene alkyl ether 10 5 8 25 25 Lauryl / myristyl glucoside 2 Lauric acid 2 2 2 2 2 2 2 Sodium hydroxide 2 2 2 2 2 2 2 Sodium chloride 2 2 1.5 2 1.5 2 2 Sodium bicarbonate 5 5 5 5 Sodium tripolyphosphate 15 20 Sodium carbonate 5 아릴산산 중합체 One Propylene Glycol 5 5 5 5 Octyl Glucoside 2 water q.s. q.s. q.s. q.s. q.s. q.s. q.s.

Evaluation of Examples and Comparative Examples

The following evaluations were carried out on the liquid detergent compositions of the above Comparative Examples and Examples.

1. pH measurement

The pH of each example and comparative example was measured to confirm that transparency and stability were maintained even in alkalinity. The pH value was measured using a pH meter (Orion 550A) manufactured by Thermo Co., and it is shown in Table 2 below.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Product pH 9.05 9.10 9.0 9.0 11.0 11..2 11.9 1 g / L pH 8.80 8.9 8.8 8.8 9.0 10.6 9.8

In Table 2, it can be seen that the pH of the compositions of Examples 1 to 3 and Comparative Examples 1 to 4 is high, and it is possible to compare the phase stability and transparency of the liquid detergent composition on the premise that the pH is high .

2. Evaluation of transparency

The transparency is measured in terms of the turbidity of the detergent solution, using a HACH 2100AN Turbidimeter at 455 nm (according to USEPA method 180.1) and is shown in Table 3 below.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Transparency (NTU) 7 8 4 45 250 420 430 Transparency after 12 weeks 10 9 5 55 Sedimentation Sedimentation Sedimentation

According to the above Table 3, although Examples 1 to 3 and Comparative Examples 1 to 4 all contain alkali builders, Examples 1 to 3, in which an anionic surfactant and a nonionic surfactant were mixed at an appropriate concentration ratio, On the other hand, in Comparative Examples 1 to 4 which did not meet these ratios, it was confirmed that the liquid phase was opaque or precipitated. This is because when an anionic surfactant and a nonionic surfactant are used in a proper concentration ratio, the alkali builder can be stabilized in the composition, and therefore, precipitation or phase separation does not occur in the precipitate and the transparency of the liquid detergent composition is kept high . It has also been confirmed that the use of an appropriate alkali builder is a very important factor in increasing the transparency of the product. In addition, it was confirmed that Example 3 in which hydrotrop was added was improved in transparency more transparent than Examples 1 and 2, although there was no significant difference in comparison with Examples 1 and 2. [

3. Evaluation of viscosity and stability

The viscosity was measured at 25 ° C on a Brookfield LV digital viscometer # 4 spindle, 60 rpm, and is shown in Table 4 below.

The compositions of Examples 1 to 3 and Comparative Examples 1 to 4 were placed in a polyester sample bottle in an amount of 100 ml each, and the mixture was stored at 50 ° C And the change in appearance over time was observed. In the visual observation of the appearance, whether or not the main confirmation object is deteriorated, such as whether the image of the contents is separated or not, is shown in Table 4 below.

4. Evaluation of cleaning force

The detergency of the liquid detergent was evaluated by a Terg-o-tometer for laboratory use. Washing force The measuring temperature was 20 ° C at 100 rpm. The amount of sample used was 1 g of sample in 1 L of water, washing time was 10 minutes, and rinsing was carried out twice for 3 minutes each. The artificial contaminated cloth used in the measurement was a wet artificial contaminated cloth of the Japan Cleanup Association. Wet artificial contamination was 5cm x 5cm and 8 pieces were used per sample. For each contaminated cloth before and after washing, the washing effect was measured by measuring the Wb value with a color difference meter (Nippon denshoku) and using the following formula 1. The comparative detergent was a standard liquid detergent of Korean industrial standard synthetic detergent. In comparison with the detergent, the washing detergent showed good results when the detergent was superior to the detergent, and the failure was indicated when the detergent was not predominant.

5. Results of viscosity, stability and cleaning force evaluation

The following Table 4 shows the viscosities of Examples 1 to 3 and Comparative Examples 1 to 4, stability for 3 months, and cleaning power.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Viscosity (cP) 300 350 350 200 250 550 450 Cleansing power Good Good Good Good Good Good Good Long-term stability
3 months stability stability stability Sedimentation Phase separation Cloudy Phase separation

As can be seen from Table 4, Examples 1 to 3 and Comparative Examples 1 to 4 All of the liquid detergents exhibited good results in terms of cleaning performance, which is the basic performance of the liquid detergent. However, unlike the examples, in Comparative Examples 3 and 4, the viscosities are very high, and when stored at high temperature, they cause turbidity or precipitation, Was observed. In the case of Comparative Example 1, although the viscosity was not high, only a non-ion was formed, and the phenomenon of precipitation upon stabilization over a long period of time was observed. This phenomenon appears to be due to the alkaline builder reacting as the viscosity of the product lowers when stored at high temperature for a long period of time and the precipitate in the composition is formed by the reaction of the alkali builder and consequently the viscosity in the composition is very high High. On the other hand, in Examples 1 to 3 in which the nonionic surfactant and the anionic surfactant were mixed in an appropriate ratio, the liquid phase was stable and transparency was maintained even after 3 months.

When the pH, the transparency, the viscosity, the stability and the cleansing power were analyzed based on the results of the above evaluations, the optimum ratios of the surfactant of the present invention and Examples 1 to 3, to which the solubilizer was applied, had transparency, It can be seen that both the stability and the cleaning power are excellent. In addition, Example 3 with hydrotrops showed similar results to those of Examples 1 and 2 which did not have hydrotrops applied in terms of viscosity, stability and cleaning power, but the transparency of the composition was the best. Thus, it can be seen that Example 3 is most suitable for the purposes of the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Do. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

Claims (10)

1 to 40% by weight of an anionic surfactant;
1 to 40% by weight of a nonionic surfactant;
0.5 to 15% by weight alkali builder;
0.5 to 15% by weight electrolyte; And
From 0.5 to 30% by weight of a solubilizing agent,
Said anionic surfactant: said nonionic surfactant being in a weight ratio of from 1:10 to 10: 1.
The method according to claim 1,
Wherein the liquid detergent composition further comprises 0.5 to 10% by weight of a hydrotrope.
3. The method of claim 2,
Wherein the hydrotrope is at least one selected from the group consisting of cumene sulfonate, toluene sulfonate, xylene sulfonate, and an alkyl polyglucoside system having a linear or branched alkyl or alkenyl group.
The method according to claim 1,
The alkali builder may be a monovalent or multivalent organic or inorganic acid salt such as a bicarbonate, a carbonate, a phosphate, a polyphosphate, a pyrophosphate, a triphosphate, a tetrapolyphosphate, a silicate, a metasilicate, a polysilicate, a hydroxide, an alkali metal salt, ≪ RTI ID = 0.0 > 1, < / RTI >
The method according to claim 1,
Wherein the electrolyte is at least one selected from the group consisting of monovalent or multivalent organic or inorganic acid salts selected from the group consisting of chloride, bromide, iodide, acetate, citrate, sulfate and mixtures thereof.
The method according to claim 1,
The solubilizing agent may be selected from the group consisting of polyethylene glycol, glycerin, propylene glycol, alkanols having 1 to 4 carbon atoms, alkylaryl sulfonates, carboxylic acid sulfates, carboxylic acid sulfonate salts, urea, hydrocarboxylates, And mixtures thereof. ≪ RTI ID = 0.0 > 18. < / RTI >
The method according to claim 1,
Wherein the liquid detergent composition has a transparency of 1 to 20 NTU.
The method according to claim 1,
Wherein the liquid detergent composition has a viscosity of 10 to 1000 cP.
The method according to claim 1,
Wherein the liquid detergent composition further comprises at least one additive selected from the group consisting of organic solvents, detergent auxiliaries, stabilizers, enzymes, preservatives, fragrances, dyes, viscosity control agents, metal ion poisons, fatty acids, thickeners, .
The method according to claim 1,
Wherein the liquid detergent composition has a pH of from 8 to 11.