KR20150019011A - Liquid detergent composition comprising excess electrolyte - Google Patents

Abstract

The present invention relates to a liquid detergent composition, and to a liquid detergent composition comprising an appropriate amount of an anionic surfactant, a nonionic surfactant and an amphoteric surfactant in an appropriate ratio of two or more surfactants, and an excess of electrolyte. The composition does not contain a disinfectant and an antimicrobial agent, and is characterized in that it exhibits effective disinfecting power for dishwashing articles such as hard surfaces of dishware and dishwasher, regardless of the acidity at pH 6 to 10.5. In addition, the composition is excellent in dispersion stability because the electrolyte exists in a supersaturated phase. That is, the composition contains an anion, a nonionic, and an amphoteric surfactant in an appropriate ratio and contains an excessive amount of electrolyte, and therefore, the composition is excellent in sterilizing power, excellent in bubble power and cleaning power.

Description

A liquid detergent composition comprising an excess of electrolyte,

The present invention relates to a liquid detergent composition containing a surfactant and an excess of electrolyte. More particularly, the present invention relates to a liquid detergent composition which is excellent in bubble power and detergency against aqueous contamination or oily contamination due to the presence of excessive electrolyte material in a supersaturated state, and which has excellent disinfecting power even without preservatives.

In general, liquid dishwashing agents that wipe dishes and bowls include electrolytes, pH adjusters, viscosity modifiers, and fragrances, including anionic surfactants, nonionic surfactants, and amphoteric surfactants. The detergency and the foaming power can show the difference in performance depending on the content of the anionic surfactant and the amphoteric surfactant. Thus, a liquid detergent composition can be prepared under optimum conditions in consideration of viscosity, pH, and usability. Increasing the quality of the detergent while reducing the amount of surfactant is a technical challenge in the art.

In addition, the liquid detergent for wiping dishes and utensils has a composition having sterilizing power against harmful bacteria. In order for the detergent to exhibit the sterilizing power, a synthetic preservative may be used, or the pH may be adjusted to an acidic condition or an alkaline condition, for example, an organic acid may be used to reduce the pH to 4 or less to inhibit or kill the harmful microorganism. However, it is a technical problem in the art to develop a detergent composition that meets the pH of the domestic kitchen cleaner of 6 to 10.5, and that minimizes or does not contain preservatives and bactericides.

Rather than increasing the surfactant content to improve the quality of the liquid detergent, the bubble power and cleaning power can be increased by using a solubilizer, an alkaline agent, an electrolyte, or a synthetic polymer as an auxiliary cleaning component. However, it is difficult to secure the stability of the liquid formulation and the flowability and usability of the product may be deteriorated.

In order for the liquid detergent to exhibit the antimicrobial activity and the sterilizing power, a synthetic preservative such as an isothiazolinone derivative, sodium benzoate or parabens, or a method of lowering or raising the pH of the liquid detergent can be used. However, side effects such as skin irritation or erythema may occur when the preservative is excessively contained to exhibit antibacterial activity and sterilizing power, or the acidity is excessively lowered by utilizing AHA such as citric acid, lactic acid or glycolic acid. In addition, regarding the preservative content and the pH range of the detergent, selection of the raw materials is limited in order to comply with the standard method related to the detergent product. In addition, by using caustic soda or caustic soda, it is possible to produce strong alkalinity and inhibit the growth and propagation of microorganisms, thereby exhibiting sterilizing power. However, also in such a case, side effects such as skin irritation or erythema may occur.

Therefore, it has been necessary to develop a technique that exhibits sterilizing power only by a combination of a surfactant and an electrolyte at a pH of 6.0 to 10.5 without using a preservative or an antimicrobial agent as in the prior art. Further, there was a need for a technique for improving the foaming power and cleaning power of the cleaning agent without increasing the content of the surfactant.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a liquid detergent composition comprising an anionic surfactant, a nonionic surfactant and an excess electrolyte, thereby improving the sterilizing power and the antibacterial power without using any preservative or antimicrobial agent.

In addition, a problem to be solved by the present invention is to provide a liquid detergent composition having excellent detergency and foaming power and good feeling of use by including a surfactant and an excess electrolyte.

In order to accomplish the above object, the present invention provides a detergent composition comprising 1 to 40% by weight of an anionic surfactant, based on the total weight of the detergent composition; 1 to 20% by weight of a nonionic surfactant; 5 to 40 wt% of electrolyte; And a residual amount of water.

In the liquid detergent composition of the present invention, the content of the anionic surfactant with respect to the nonionic or amphoteric surfactant content is 0.1 to 10 times, preferably 0.5 to 8 times, more preferably 0.5 to 5 times.

Surfactant monomers are combined to form a micelle. The micelle structure can be variously changed depending on the electrolyte concentration, such as spherical, rod-like, or lamellar, and formed into a worm-like structure As the concentration of the electrolyte increases, the combination of the surfactants exhibits viscoelasticity, and unlike the conventional cleaning agent, the foam exhibits excellent physical properties such as cleaning power and feel.

In the liquid detergent composition of the present invention, the content of the anionic surfactant is 1 to 40 wt%, more preferably 5 to 15 wt%, based on the total weight of the composition. The content of the nonionic surfactant is 1 to 20% by weight, more preferably 1 to 15% by weight, based on the total weight of the composition. The content of the electrolyte is 5 to 40% by weight, more preferably 15 to 30% by weight, based on the total weight of the composition.

As a result, the surfactant component in the liquid detergent composition of the present invention is 5 to 50% by weight, preferably 10 to 40% by weight, more preferably 10 to 35% by weight based on the total weight of the composition.

The pH of the liquid detergent composition of the present invention is 6 to 11.

In the liquid detergent composition of the present invention, it is preferable that the anionic surfactant is a mixture containing a sulfonate anionic surfactant and a sulfate anionic surfactant in order to exhibit detergency. It is also known that anionic surfactants are excellent in detergency, and when two or more anionic surfactants and nonionic surfactants or amphoteric surfactants are used, synergistic effects on cleaning power can be seen. .

The sulfate anionic surfactant may be an alkylsulfate, an alkyl ether sulfate or a mixture thereof. More specifically, an alkyl sulfate having a C8-C16 alkyl group, preferably an alkyl ether sulfate having a C12-C16 alkyl group, may be used as the sulfate anionic surfactant.

The sulfonate anionic surfactant may be an alkylbenzenesulfonate having a linear or branched C8 to C22 alkyl group, an olefin sulfonate, a secondary alkanesulfonate, an alpha sulfonate methyl / ethyl ester, or a mixture thereof . More specifically, C12 to C18 alkanesulfonates, C8 to C18 olefin sulfonates, preferably C14 to C16 alkanesulfonates, C12 to C18 olefin sulfonates, or mixtures thereof may be used as the sulfonate-based anionic surfactant.

As the sulfate anionic surfactant, a sulfuric acid monoester compound having a primary or secondary alcohol having 8 to 18 carbon atoms is used. As the alcohol, a coconut fatty alcohol, a tallow fatty alcohol, an oleyl alcohol or a C1 to C20 oxoalcohol may be used have.

The sulfuric acid monoester compound of the aliphatic primary alcohol containing 1 to 6 ethylene oxide as the sulfate anionic surfactant, the sulfuric acid monoester compound of the ethoxylated secondary alcohol or the alkylphenol, the sulfuric acid monoester compound of the sulfated fatty acid alkane Napamide or sulfated fatty acid monoglyceride can be used.

The anionic surfactant is not particularly limited as long as it can be used in a conventional cosmetic composition. Examples of the anionic surfactant include fatty acid soap (sodium laurate, sodium palmitate, etc.); Higher alkyl sulfate ester salts (sodium lauryl sulfate, potassium lauryl sulfate and the like); Alkyl ether sulfuric acid ester salts (POE-laurylsulfuric triethanolamine, POE-laurylsulfate, etc.); N-acyl sarcosinate (such as sodium lauroyl sarcosine); Higher fatty acid amide sulfonates (N-myristoyl-N-methyltaurine sodium, palm oil fatty acid Methyl tauride sodium, lauryl methyl tauride sodium, etc.); Phosphoric acid ester salts (sodium POE-oleyl ether phosphate, POE-stearyl ether phosphoric acid, etc.); Sulfosuccinic acid salts (sodium di-2-ethylhexylsulfosuccinate, sodium monooroyl monoethanolamide polyoxyethylene sulfosuccinate, sodium lauroyl polypropylene glycol sulfosuccinic acid and the like); Alkylbenzenesulfonates (sodium linear decylbenzenesulfonate, triethanolamine linear decylbenzenesulfonate, linear decylbenzenesulfonic acid, etc.); Higher fatty acid ester sulfuric acid ester salts (such as hardened coconut oil fatty acid glycerin sodium sulfate); N-acyl glutamate (monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, monosodium N-myristoyl-L-glutamic acid, etc.); Sulfuric acid oil (lot oil, etc.); POE-alkyl ether carboxylic acid; POE-alkyl allyl ether carboxylate; ? -olefin sulfonate; Higher fatty acid ester sulfonates; Secondary alcohol sulfuric acid ester salts; Higher fatty acid alkylolamide sulfates; Sodium lauroyl monoethanolamide succinate; N-palmitoyl aspartic acid ditriethanol amine, and sodium caseinate; however, it is not limited thereto. The higher fatty acid refers to a fatty acid having a carbon number of C8 to C22.

The anionic surfactant is preferably in the form of a salt, and a sodium salt is particularly suitable.

The nonionic surfactant may be a primary or secondary alcohol type nonionic surfactant containing 1 to 25 moles of ethylene oxide, an alkyl polyglycoside type nonionic surfactant, a fatty acid amide type nonionic surfactant (for example, ammonia Amide, monoethanol amide, diethanol amide or isopropanol amide) or mixtures thereof may be used. Preferably, alkylpolyglycoside-based nonionic surfactants having a linear or branched alkyl group having 8 to 22 carbon atoms can be used.

Also, as the nonionic surfactant, a lipophilic nonionic surfactant or a hydrophilic nonionic surfactant can be used and is not particularly limited as long as it can be used in a conventional cosmetic composition. For example, the lipophilic nonionic surfactant Examples of the active agent include sorbitan fatty acid esters (sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, Sorbitan trioleate, penta-2-ethylhexyl acid diglycerol sorbitan, tetra-2-ethylhexyl acid diglycerol sorbitan and the like); Glycerin polyglycerin fatty acids (monosaccharic fatty acid glycerin, monoelucic acid glycerin, sesquioleic acid glycerin, monostearic acid glycerin,?,? '- oleic acid pyroglutamic acid glycerin, monostearic acid glycerin malic acid, etc.); Propylene glycol fatty acid esters (such as propylene glycol monostearate); Hardened castor oil derivatives; Glycerin alkyl ethers, etc. Examples of the hydrophilic nonionic surfactant include POE-sorbitan fatty acid esters (POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan tetraoleate and the like); POE-sorbit fatty acid esters (POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, and the like); POE-glycerin fatty acid esters (POE-glycerin monostearate, POE-glycerin monoisostearate, POE-glycerin triisostearate, etc.); POE-fatty acid esters (POE-distearate, POE-monodioleate, ethylene glycol distearate, etc.); POE-alkyl ethers (POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); Pluronic molds (Pluronic and the like); POE / POP-alkyl ethers (POE / POP-cetyl ether, POE / POP-2-decyltetradecyl ether, POE / POP-monobutyl ether, POE / POP-hydrogenated lanolin, POE / POP-glycerin ether and the like); Tetra POE tetra POP-ethylenediamine condensation products (such as Tetronic); POE-castor oil-hardened castor oil derivative (POE-castor oil, POE-hardened castor oil, POE-hardened castor oil free monoisostearate, POE-hardened castor oil free triisostearate, POE-hardened castor oil free monopyrroglutamate monoisoprene Stearic acid diester, POE-hardened castor oil free maleic acid); POE beeswax / lanolin derivatives (POE-sorbitol beeswax); Alkanolamides (coconut fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid esters; POE-alkylamines; POE-fatty acid amide; Sucrose fatty acid esters; Alkyl ethoxydimethylamine oxides; And trioleyl phosphoric acid. However, the present invention is not limited thereto.

The amphoteric surfactant may be a fatty acid amide based betaine having 8 to 22 carbon atoms, an amine-based alkyl amine oxide having 8 to 22 carbon atoms, or a mixture thereof.

The amphoteric surfactant is not particularly limited as long as it can be used in a conventional cosmetic composition, and examples thereof include an imidazoline surfactant (2-undecyl-N, N, N- (hydroxyethylcarboxy Methyl-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt and the like) and betaine surfactants (2-heptadecyl-N-carboxy Methyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkyl betaine, amide betaine, sulfobetaine, etc.), but is limited to at least one selected from the group consisting of It is not.

The liquid detergent compositions of the present invention also include an excess of electrolyte, which exhibit viscoelastic effects in surfactant systems and can increase cleaning and foaming power, and may be present as granules above a supersaturated phase. The role of these electrolytes in surfactant systems also has the effect of increasing dispersion stability and enhancing cleaning power.

As the electrolyte, a monovalent or multivalent organic or inorganic acid salt may be used. Preferably, it is made up of a chloride, bromide, iodide, acetate, bicarbonate, phosphate, citrate, sulfate, polyphosphate, pyrophosphate, triphosphate, tetraphosphate, silicate, One or more selected from the group consisting of < RTI ID = 0.0 > More preferably, at least one selected from the group consisting of chloride, acetate, bicarbonate, phosphate, silicate, and carbonate can be used. Most preferably, a chloride may be used. Calcium, magnesium, zinc, aluminum or iron may be used as the counter cation of the anion of such salts. More specifically, a chloride electrolyte of a monovalent, divalent or trivalent salt is preferable.

Preferred components and proportions of the composition of the liquid detergent composition of the present invention are 5 to 15% by weight of alkyl ether sulfate, 1 to 10% by weight of alkylpolyglycoside, 1 to 5% by weight of alkylamine oxide, 1 to 3% by weight, sodium chloride 15 to 30% by weight, and the balance water.

The liquid detergent composition of the present invention may further contain, in addition to the above components, a solubilizing agent, an organic solvent, an incense, a dye, a pH adjuster, a metal salt concentrate, an enzyme or water within the range not hindering the object of the present invention, And the content can be appropriately selected and adjusted by those skilled in the art. In this case, it is preferable to use purified water, and it may be a liquid phase or a solvent dissolved in a liquid solvent at room temperature and having a function other than a function of a simple filler. As such a solvent, a solubilizing agent or an organic solvent may be used.

Examples of the solubilizing agent include polyethylene glycol having a weight average molecular weight of 100 to 2,000, glycerin, propylene glycol, an alkanol having 1 to 4 carbon atoms, an alkylaryl sulfonate, a carboxylic acid sulfate or a sulfonate salt, a urea, a hydrocarboxylate, And at least one selected from the group consisting of the above-mentioned compounds. Examples of the alkanol having 1 to 4 carbon atoms include methanol, ethanol, propanol, isopropanol, linear or branched butanol, and the like. The solubilizing agent is used in an amount of 0.1 to 5% by weight, more preferably 1 to 3% by weight based on the total composition. If the solubilizing agent is less than 0.1% by weight, the solubilizing effect is not sufficiently exhibited. And the phase may be separated.

As the organic solvent, a mono- or polyhydric alcohol may be used. Specifically, methanol, ethanol, propanol, isopropanol, butanol, glycerin, or a mixture thereof having a carbon number of about 1 to 4 can be used.

As the fragrance, aromatic compounds conventionally used may be used, and those which are chemically synthesized or extracted from natural materials and known in the art may be used.

The preservative may be ethanol, phenoxyethanol, formaldehyde solution, pentene diol, paraben or sodium benzoate.

The pH adjusting agent is used to maintain a pH of 6.0 to 10.5, and a low molecular weight inorganic or organic compound may be used. Preferably, as the alkali regulator, caustic soda, phthalic acid, diethanolamine or triethanolamine can be used. As the acidic regulator, citric acid, malic acid, salicylic acid, tartaric acid, lactic acid, acetic acid, sorbic acid or benzoic acid can be used have.

The metal ion sulfonating agent is used for increasing the formulation and phase stability of the liquid composition of the present invention and may be selected from citric acid, lactic acid, succinic acid, tartaric acid, malic acid, EDTA, EDTA-2Na, EDTA-4Na, DTA, NTPA, At least one selected from the group consisting of polyacrylic acid, gluconic acid, sorbitol and sodium bicarbonate can be used.

The pH range of the liquid detergent composition of the present invention is preferably in the range of 6 to 10.5. If the pH is lower than 6, the surfactants containing ethylene oxide are decomposed by hydrogen ions, which may deteriorate the performance as a surfactant. If the pH is higher than 10.5, irritation to the skin may increase to cause skin troubles

The liquid detergent composition of the present invention can be produced by any method conventionally used in this field. To prepare a particularly homogeneous liquid or gel type dishwashing detergent composition, it may be prepared by mixing together the required optional ingredients in the usual manner using suitable agitation.

The liquid detergent composition of the present invention can be used for cleaning kitchen tools.

The liquid detergent composition of the present invention has an excellent sterilizing power by containing an excess amount of electrolyte and does not contain a bactericide and an antibacterial agent and does not have strong acidity or strong alkalinity, thereby reducing side effects such as skin irritation or erythema.

Further, the liquid detergent composition of the present invention is excellent in bubble power and detergency due to the combination of supersaturated electrolyte and surfactant, and is usable.

Hereinafter, in order to facilitate understanding of the present invention, examples and experimental examples will be described in detail. However, the embodiments according to the present invention can be modified into various other forms, and the scope of the present invention should not be construed as being limited to the following embodiments. Embodiments of the invention are provided to more fully describe the present invention to those skilled in the art.

Comparative Example  And Example  Manufacture of 1 to 6

A liquid detergent composition was prepared with the compositions and contents shown in Table 1 below. The compositions were mixed through agitation so as to be homogeneous liquid phase. As each component of Table 1, alkyl ether sulfates having 12 to 18 carbon atoms, alkylpolyethylene glycols having 12 to 18 carbon atoms and 1 to 8 moles of ethylene oxide, alkylamine oxides having 12 to 18 carbon atoms, and alkylamide propyl betaines having 12 to 18 carbon atoms And other electrolyte, flavor and pH adjuster were used.

Category (% by weight) Comparative Example Example One 2 3 4 5 6 Alkyl ether sulfate 12 12 12 12 12 12 12 Alkyl amine oxide 2 3.5 2 2 2.5 2.5 2.5 Alkyl amide propyl betaine - 1.5 1.5 1.5 - - - Alkylpolyglycoside - 1.5 1.5 1.5 1.5 1.5 1.5 Sodium chloride One 5 10 15 20 25 30 incense q.s. q.s. q.s. q.s. q.s. q.s. q.s pH adjusting agent q.s. q.s. q.s. q.s. q.s. q.s. q.s Purified water To 100 To 100 To 100 To 100 To 100 To 100 To 100

Comparative Example  And Example  Evaluation of 1 to 6

The following evaluations were performed on the liquid detergent compositions of the above Comparative Examples and Examples. The bubble power was measured as shown in Table 2, and the microbial sterilizing power was evaluated as shown in Table 8. In addition, as shown in Table 7, the decontamination power, the washing duration and the skin irritancy were measured, and the biodegradability of the activated sludge was measured as shown in Table 10.

Experimental Example  One. Bubble power  evaluation

Foam production for animal oil and vegetable oil contamination was evaluated at 25 ° C. Using a 600 ml cylinder, 1.5 g of cleaning agent and 3 g of vegetable and animal oil contamination were contained in 100 ml of soft water, and the height at which the air bubbles were generated was measured by rotating it 100 times at 60 rpm. The evaluation results are shown in Table 2.

Comparison of bubble generation power Comparative Example Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Animal oil 220 240 300 350 350 350 350 vegetable oil 400 450 520 520 530 550 550

Comparing the Comparative Examples with Examples 1 to 6, Examples 1 to 6, which contain a large amount of sodium chloride as an electrolyte, compared with Comparative Examples of an anionic surfactant-free electrolyte containing no foaming agent for animal oils and vegetable oils Respectively.

Experimental Example  2. Decontamination power  Measure

The contaminants containing tallow (tallow) and soybean oil as main ingredients were prepared by KS M2716 method and uniformly coated on a slide glass. Then, a cleaning agent composition of Comparative Examples and Examples was added to a stirring mixed tester (rotation speed: 100 rpm) Each was added and rinsed for 3 minutes. Then, the residual contamination was dissolved in chloroform to measure the UV absorbance and evaluated according to the evaluation criteria shown in Table 3. The results are shown in Table 7 below.

Evaluation standard More than 90% of decontamination ◎ Decontamination rate 80 to 89% ○ Decontamination rate 70 to 79% △ Decontamination rate 69% or less ×

Experimental Example  3. Evaluation of dish washing power

The cleaning durability was measured by a method of evaluating the number of dishes cleaned after applying 1 g / m.sup.2 of stain on a 100 mm diameter watch plate using a plate test method. 3 L of the aqueous solution of the detergent composition (0.2 wt%) of the comparative examples and the examples was placed in a bucket having a diameter of 30 cm and a height of 30 cm and freely dropped at a height of 1 m. When the thickness was less than the thickness, the end point was determined, and the cleaning power was evaluated by the number of the washed dishes. The results are shown in Table 7 below. Evaluation criteria of dish washing power are shown in Table 4 below. Oil / inorganic residues such as sebum, mud, debris, plant residue, protein, starch, fat or oil are used for the decontamination power measurement. In this experiment, emulsified contaminants were used, The contaminant composition for evaluating detergency was shown.

Criteria for evaluating dish washing power Number of dishes washed Evaluation standard sign Less than 1 Inadequate × 2 to 3 usually △ 4 to 6 Great ○ 7 or more very best ◎

Contaminant composition weight (%) milk 20 egg 20 Starch 15 margarine 10 cooking oil 10 water Up to 100% by weight

Experimental Example  4. Evaluation of skin irritation ( A closure  exam)

A 2 wt% test solution was prepared by mixing 2 wt% of the compositions of the above Examples and Comparative Examples and 98 wt% of water. The test specimen of the test solution was applied to the inside of the upper abdomen, and after 48 hours, it was peeled off. After the sample was removed, the degree of erythema was judged visually after 4 hours. Table 6 shows the visual discrimination criteria of the erythema levels, and the results are shown in Table 7.

Visual judgment Judgment code No erythema ◎ Slightly redder than surrounding ○ More than 1/3 reddish symptom △ Red color, browning, blistering, etc. ×

The evaluation results of the decontamination power, the cleaning power, and the skin irritation according to the criteria of Tables 3, 4 and 6 are summarized in Table 7 below.

division Comparative Example Example One 2 3 4 5 6 Decontamination power △ △ △ ◎ ◎ ◎ ◎ Continuity of washing (number of dish) ○ ○ ○ ◎ ◎ ◎ ◎ Skin irritation ○ ○ ○ ○ ○ ○ ○

As a result, in Examples 3 to 6 having a high electrolyte content, the skin irritation was the same as that of the comparative example, and the decontamination power and the washing duration were remarkably improved.

Experimental Example  5. Evaluation of sterility

Comparative Examples and Examples 1 to 6 were evaluated. The test strains were Escherichia coli ) and Staphylococcus aureus ) was added to 20 ml of the sample solution at a constant concentration. After 8 hours, 1 ml was taken from the sample solution and transferred to a sterile dilution. After being neutralized for a certain period of time, 0.5 ml of the solution was transferred to the medium and stained. The number of colonies grown after incubation for 24 hours in an incubator was determined and the mortality rate relative to the initial number of bacteria was measured. The results are summarized in Table 8 below.

division Initial number of bacteria Comparative Example Example One 2 3 4 5 6 Sterilization power 5 * 10 ⁵ 4.2 * 10 ⁴ 4.0 * 10 ⁴ 8 * 10 ³ 25 20 10 10 - 91.6% 92% 98.4 99.9%
More than 99.9%
More than 99.9%
More than 99.9%
More than

As a result, it was confirmed that when the cleaning agent composition contained 15 to 30% by weight of the electrolyte, the bactericidal power was 99.9% or more, which was excellent.

Experimental Example  6. Evaluation of biodegradability

The composition of the incubator for biodegradation test was as shown in Table 9, and the activated sludge was used as a decomposition source and cultured in a shaking incubator containing a detergent at 23 占 폚 for 8 days with shaking. The biodegradability of the sampled samples was evaluated by the bubble volume method. The activated sludge was activated sludge collected from an activated sludge type sewage treatment plant and used so that the concentration of the suspended material was 10,000 to 20,000 mg / L within 5 hours after the collection. At this time, the surfactant concentration in the used and comparative examples was 30 mg / L.

Raw material Composition (g / L) Ammonium chloride 3.0 Potassium phosphate 1.0 Magnesium sulfate 0.25 Potassium chloride 0.25 Ferrous sulfate 0.002 Yeast extract 0.1 water  11

The evaluation results of the biodegradability of the compositions of the Examples and Comparative Examples are shown in Table 10 below.

division Day 2 Day 4 Day 6 Comparative Example 81.4 99.9 99.9 Example 1 81.5 99.9 99.9 Example 2 82.7 99.9 99.9 Example 3 85.2 99.9 99.9 Example 4 86.5 99.9 99.9 Example 5 86.0 99.9 99.9 Example 6 87.7 99.9 99.9

As can be seen from the results of Tables 7, 8 and 10, in Examples 1 to 6 in which an anionic surfactant, a nonionic surfactant and a supercritical electrolyte were appropriately used according to the present invention, In addition, they exhibited excellent characteristics in terms of decontamination power, washing duration, sterilization power and biodegradability.

Claims (9)

1 to 40% by weight of an anionic surfactant, 1 to 20% by weight of a nonionic surfactant, 5 to 40% by weight of an electrolyte and a balance of water, based on the total weight of the composition. The detergent composition of claim 1, wherein the pH of the composition is between 6 and 11. 2. The composition of claim 1, wherein the anionic surfactant comprises a sulfate- and sulfonate-based anionic surfactant,
The sulfate anionic surfactant is an alkyl sulfate or an alkyl ether sulfate,
The sulfonate anionic surfactant may be at least one selected from the group consisting of alkylbenzenesulfonates having straight or branched C8 to C22 alkyl groups, olefin sulfonates, secondary alkanesulfonates and alpha-sulfonate methyl / ethyl esters ≪ / RTI > The nonionic surfactant according to claim 1, wherein the nonionic surfactant is at least one selected from the group consisting of primary or secondary alcohol-based, alkylpolyglycoside-based, and fatty acid amide-based nonionic surfactants containing 1 to 25 moles of ethylene oxide ≪ / RTI > The method of claim 1, wherein the electrolyte is selected from the group consisting of chloride, bromide, iodide, acetate, bicarbonate, phosphate, citrate, sulfate, polyphosphate, pyrophosphate, triphosphate, tetraphosphate, silicate, metasilicate, polysilicate, carbonate, And an alkali metal salt. ≪ RTI ID = 0.0 > 18. < / RTI > 6. The detergent composition of claim 5, wherein the electrolyte is a chloride. The composition of claim 1, wherein the composition further comprises an amphoteric surfactant, a fatty acid amide based betaine having 8 to 22 carbon atoms, an amine based alkyl amine oxide having 8 to 22 carbon atoms, or a mixture thereof. Composition. 2. The detergent composition of claim 1, wherein the composition is used for cleaning kitchen tools. Wherein the composition comprises from 5 to 15% by weight of alkyl ether sulfate, from 1 to 10% by weight alkylpolyglycoside, from 1 to 5% by weight alkylamine oxide, from 1 to 3% by weight alkylamide propylbetaine, from 15 to 30% by weight sodium chloride, Lt; RTI ID = 0.0 > water. ≪ / RTI >