KR102264144B1 - Liquid detergent composition for washing dishes by hands - Google Patents

Abstract

The present invention relates to a liquid detergent composition for hand washing that can exhibit excellent cleaning power even if the physical force is reduced or omitted during cleaning, and based on the total weight of the composition, 1 to 20% by weight of a surfactant; 0.1 to 10% by weight of at least one chelating agent consisting of carboxylic acid, aminocarboxylic acid and salts thereof; 3 to 30% by weight of a solubilizer comprising a diol; and the remaining amount of water; wherein the diol comprises 3 to 10% by weight based on the total weight of the composition, and the pH of the composition is characterized in that it represents 6.0 to 7.5.

Description

Liquid detergent composition for washing dishes by hands

The present invention relates to a liquid detergent composition for hand washing, which can exhibit excellent cleaning power even if the physical force is reduced or omitted during cleaning.

A dishwashing detergent for removing contamination from tools such as tableware is generally composed of a relatively simple formulation such as an electrolyte, a pH adjuster, a viscosity adjuster, and a fragrance while including a cleaning surfactant. The detergent composition is applied to the surface of the tableware to generate bubbles, and the wetting, penetration, rolling-up, emulsification, and solubilization of the surfactant are performed in a complex manner, and contaminants are formed. will remove In this case, the rolling-up refers to a process in which surfactant molecules penetrate and adsorb between the contaminant and the substrate to drop the contamination from the surface.

In most cases, it is difficult to activate the rolling-up without the physical friction of rubbing when washing dishes, so that contamination cannot be completely removed. Therefore, a tool capable of giving a physical friction force such as a loofah or a sponge is used incidentally, and individual time and energy are consumed in the rubbing process, and, in addition, there is a problem that the contamination cannot be completely removed.

In the conventional dishwashing detergent, in order to enable washing without rubbing, there are examples containing enzymes and examples containing solvents. However, these enzymes have the problem of irritating the skin. The amount of enzyme must be increased in order to wash without rubbing, but the usable content is limited due to skin irritation. In addition, there is a disadvantage in that long-term stability cannot be ensured due to low enzyme activity in the detergent composition. Solvents also have a problem of irritating the skin and causing off-flavor in the composition, so their use is limited.

Therefore, research on a liquid detergent composition for hand washing that can exhibit excellent cleaning power even if the physical force is reduced or omitted during cleaning is required.

The present invention relates to a liquid detergent composition for hand washing, and an object of the present invention is to provide a liquid detergent composition for hand washing that can exhibit excellent cleaning power even if the physical force is reduced or omitted during washing.

In order to solve the above problems, the present invention is based on the total weight of the composition, 1 to 20% by weight of a surfactant; 0.1 to 10% by weight of at least one chelating agent consisting of carboxylic acid, aminocarboxylic acid and salts thereof; 3 to 30% by weight of a solubilizer comprising a diol; and the remaining amount of water; wherein the diol comprises 3 to 10% by weight based on the total weight of the composition, and the pH of the composition is 6.0 to 7.5. A liquid detergent composition for hand washing, characterized in that it represents to provide.

The liquid detergent composition for hand washing according to the present invention contains a surfactant and a chelating agent that exhibit excellent cleaning power, so that even if the physical force is reduced or omitted during cleaning, the effect of easily removing contaminants from the object to be washed can perform

Hereinafter, the present invention will be described in detail.

Liquid detergent composition according to the present invention, the total composition of 1 to 20% by weight of a surfactant;

0.1 to 10% by weight of at least one chelating agent consisting of carboxylic acid, aminocarboxylic acid and salts thereof; and a solubilizer comprising a diol, wherein the diol comprises a total of 3 to 10% by weight of the composition, and the pH of the composition is characterized in that it represents 6.0 to 7.5. The composition may further include additives commonly used in the field of detergent compositions.

The liquid detergent composition of the present invention can exhibit the effect of easily removing the contaminants of the object to be washed even if the physical force is reduced or omitted during cleaning.

Surfactants

The surfactant of the present invention may be an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, or a mixture thereof. The anionic surfactant has excellent cleaning power, and when a nonionic surfactant and/or an amphoteric surfactant are used together, a synergy can be exerted in the cleaning power.

The anionic surfactant may be a sulfonate-based surfactant, a sulfate-based surfactant, or a mixture thereof.

The anionic surfactant is an alkylbenzenesulfonate, olefin sulfonate, secondary alkane sulfonate, alpha sulfonate methyl/ethyl ester, alkyl sulfate, alkyl ether sulfate, wherein the alkyl group is a straight-chain or branched alkyl having 8 to 22 carbon atoms. or mixtures thereof may be used. More specifically, as the sulfate-based surfactant, a sulfonate having an alkyl group having 8 to 16 carbon atoms, preferably an alkylether sulfate having an alkyl group having 12 to 16 carbon atoms, or an alkane sulfonate having 12 to 18 carbon atoms, preferably having 12 carbon atoms An alkane sulfonate having from 16 to 16 carbon atoms, or an olefin sulfonate having 8 to 18 carbon atoms, preferably an olefin sulfonate having 12 to 16 carbon atoms can be used. .

The hydrocarbon group of the anionic surfactant has 8 or more carbon atoms, preferably 10 or more, more preferably 12 or more, and 22 or less, preferably 18 or less, more preferably 14 or less, more preferably 14 or less carbon atoms from the viewpoint of detergency. 12 or less.

As the above anionic surfactant having a sulfuric acid ester group, from the viewpoint of detergency, straight chain chain having 8 or more, preferably 10 or more, and 22 or less, preferably 18 or less, more preferably 14 or less, and preferably 12 or less carbon atoms; Alkyl sulfate ester salts having a branched alkyl group are suitable.

Further, as the anionic surfactant having a sulfuric acid ester group and a polyoxyalkylene group, from the viewpoint of detergency, the carbon number is 8 or more, preferably 10 or more, and 22 or less, preferably 18 or less, more preferably 14 or less, and more preferably Preferably, it has 12 or less linear or branched alkyl group, and the average added mole number of the oxyalkylene group having 2 or more and 3 or less carbon atoms is preferably 0.1 or more, more preferably 0.3 or more, further preferably 0.4 or more, and preferably Preferably, polyoxyalkylenealkyl ether sulfate ester salts having a polyoxyalkylene group of 6 or less, more preferably 3 or less, and more preferably 1.5 or less are suitable.

In addition, as the anionic surfactant having a sulfonic acid group, from the viewpoint of detergency, (1) an alkyl benzenesulfonate having an alkyl group having 6 to 15 carbon atoms and (2) 8 or more carbon atoms, preferably 10 or more, and 22 or less, preferably At least one anionic surfactant selected from alkane sulfonates of 18 or less, more preferably 14 or less, and preferably 12 or less is suitable.

The anionic surfactants are preferably in the form of salts, for example, a metal cation selected from the group consisting of sodium, potassium, lithium, calcium, and magnesium; A substituted ammonium cation selected from the group consisting of methylammonium, dimethyl ammonium, trimethylammonium, mono-ethanolammonium, di-ethanolammonium, triethanol ammonium, and quaternary ammonium may be used, wherein the quaternary ammonium is tetraammonium and dimethylpipette Lidinium cations and those selected from the group consisting of ethylamine or diethylamine, or triethylamine and alkylamine derivatives can be used. Among these salts, the sodium salt is particularly suitable.

For example, the anionic surfactant may be a mixture of an alpha olefin sulfonate salt and an alkyl ether sodium sulfate. The olefin or alkyl preferably has 12 to 16 carbon atoms.

The nonionic surfactant and/or the amphoteric surfactant serves to improve foaming power and cleaning power in addition to the anionic surfactant.

As the nonionic surfactant, those commonly used in the field to which the present invention pertains may be used without limitation, but preferably those having a hydrophilic lipophilic balance (HLB) of 4 to 20 may be used. The HLB value is a value indicating the degree of hydrophilicity or lipophilicity of the surfactant, and it means that as the HLB value increases, the hydrophilicity increases.

Specifically, primary or secondary alcohol-based nonionic surfactants containing 1 to 25 mol of ethylene oxide, alkyl polyglycoside-based nonionic surfactants, and fatty acid amides are ammonia amide, monoethanolamide, diethanolamide or isopropanolamide. It is possible to use a fatty acid amide-based nonionic surfactant or a mixture thereof. Preferably, the alkyl polyglycoside-based nonionic surfactant has 8 to 22 carbon atoms, and a linear or branched type may be used.

The amphoteric surfactant includes a structure in which a cation and an anion are present simultaneously in the molecular structure, and those known in the art may be used, and fatty acid amide-based betaines having 8 to 22 carbon atoms and amine-based surfactants having 8 to 22 carbon atoms may be used. Alkyl amine oxide and the like can be used, and mixtures thereof can also be used.

Preferably, the amphoteric surfactant may be at least one selected from alkyl amine oxide and alkyl betaine. More preferably, an alkylamine oxide may be used, and the alkyl group may have 6 to 18 carbon atoms, specifically, 12 to 14 carbon atoms. For example, the alkyl group is preferably a lauryl group having 12 carbon atoms.

In one example, the surfactant is a mixture of the alpha olefin sulfonate salt (the olefin has 12 to 16 carbon atoms), sodium alkyl ether sulfate (the alkyl group has 12 to 16 carbon atoms) and an alkylamine oxide (the alkyl group has 6 to 18 carbon atoms). can be In this case, the mixing ratio of the alpha olefin sulfonate salt, alkyl ether sodium sulfate, and alkyl amine oxide may be 80:10:10 to 1:4:90. When the surfactant has the above compounding ratio range, excellent cleaning power may be exhibited.

The surfactant may be contained in an amount of 1 to 20% by weight based on the total weight of the composition. If the content of the surfactant is less than 1%, the cleaning power is inferior, and if it exceeds 20%, the rinse property is inferior.

chelating agent

The chelating agent of the present invention increases the formulation and phase stability of the composition, and improves the cleaning power together with the surfactant, thereby reducing or omitting the physical force during cleaning.

The chelating agent of the present invention may be at least one selected from the group consisting of carboxylic acids, aminocarboxylic acids, and salts thereof.

The carboxylic acid may be at least one selected from the group consisting of citric acid, lactic acid, succinic acid, tartaric acid, malic acid, and the like.

The aminocarboxylic acid may be at least one selected from the group consisting of ethylenediamine tetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), glutamic acid, and the like.

Examples of the carboxylic acid salt or aminocarboxylic acid salt include ethylenediamine tetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), nitrilotriacetic acid (NTA), imino acetic acid, diethylene triamine acetic acid (DPTA) , glycine diacetic acid (GLDA), iminodisuccinimide (IDS), N-hydroxyethyl-ethylenediamine acetic acid (HEDTA), aspartic acid acetic acid (ASDA) and salts thereof may be at least one selected from the group consisting of .

Examples of the salt include alkali metal salts, ammonium salts, and amine salts. Preferably it is an alkali metal salt, More preferably, it is a sodium salt or potassium salt.

For example, the chelating agent may be at least one selected from the group consisting of ethylenediamine tetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), citric acid, and lactic acid.

The chelating agent may be included in an amount of 0.1 to 10% by weight based on the total weight of the composition. If the content of the chelating agent is less than 0.1% by weight, the cleaning power may be inferior, and if it exceeds 10% by weight, formulation stability may be inferior.

solubilizer

The solubilizer of the present invention is polyethylene glycol having a weight average molecular weight (Mn) of 100 to 2000 g/mol, glycerin, an alkanol having 2 to 4 carbon atoms, alkylaryl sulfonate, carboxylic acid sulfate or sulfonate salt, urea, hydro At least one selected from the group consisting of carboxylate carboxylate and diol may be used.

For example, the alkanol having 2 to 4 carbon atoms may be ethanol, propanol, isopropanol, straight-chain or branched butanol. For example, the diol may be monoethylene glycol, diethylene glycol, propylene glycol and butylene glycol.

Preferably, the solubilizing agent may be used by mixing the alkanol having 2 to 4 carbon atoms and the diol. For example, the solubilizing agent may be a mixture of ethanol and propylene glycol. For example, the mixing ratio of the alkanol and the diol may be a weight ratio of 1:0.2 to 1:0.7. The solubilizing agent may implement a viscosity (25° C.) of the composition of 100 cps or less, specifically, 0 cps to 100 cps, for example, 1 cps to 100 cps.

The solubilizer may be contained in an amount of 3 to 30% by weight based on the total weight of the composition.

Among the solubilizers, the diol may be contained in an amount of 3 to 10% by weight based on the total weight of the composition. In the case of the diol, if it is used in an amount of less than 3% by weight based on the total weight of the composition, there is a risk of clogging the outlet due to gelling or the like.

The liquid detergent composition according to the present invention can be used by mixing an appropriate amount of conventional additives such as fragrances, antifoaming agents, and pigments as needed within a range that does not impair the effects of the present invention.

The additive may be included in an amount of 0.01 to 10% by weight, preferably 0.01 to 5% by weight, based on the total weight of the composition, but its content may vary depending on the object, purpose, and cleaning method of the object to be cleaned, cleaning power against contamination or Those skilled in the art can arbitrarily adjust the content within the range that human body, environment and storage stability are not impaired.

The liquid detergent composition for hand washing of the present invention includes water as the remaining components in addition to the above components. These ingredients are mixed with water to form a liquid detergent composition for hand washing.

The pH of the liquid detergent composition for hand washing of the present invention is preferably 6.0 to 7.5. When the pH is less than 6.0, the formulation stability is inferior, and when the pH exceeds 7.5, the effect of improving the cleaning power may not appear.

More specifically, the liquid detergent composition for hand washing has a pH in the range of 6.0 to 7.5, thereby increasing the cleaning power by removing metal ions bound between the object to be washed and the contaminants, and the removal power of water can also be improved.

The chelating power can be calculated by the following formula, and among the carboxylic acid-based chelating agents of the present invention, citric acid has three pKa values, so it is more effective in realizing the effect of increasing the concentration of the chelating agent at pH 7.5 or less.

The liquid detergent composition for hand washing of the present invention may be used as it is in liquid form, or sprayed in the form of a foam or spray in a container. The composition can be washed by contacting the object to be washed without separately diluting it with water, and can exhibit an excellent cleaning effect without using little or complete physical force such as rubbing with a loofah or sponge.

The viscosity of the liquid detergent composition for hand washing of the present invention may exhibit a low viscosity characteristic of 100 cps or less, specifically, 1 to 100 cps at room temperature (25° C.). When the viscosity exceeds 100 cps, it may not be easily sprayed when using a foam or spray container.

Hereinafter, Examples and Comparative Examples of the present invention will be described. These Examples and Comparative Examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto. That is, other modifications of the present invention may be permitted within the scope of those skilled in the art of hand-washing liquid detergent compositions without departing from the spirit and scope of the present invention.

[Examples 1-27 and Comparative Examples 1-14]

Liquid detergent compositions of Examples 1-27 and Comparative Examples 1-14 were prepared according to a conventional method known in the art according to the compositions and contents shown in Tables 1 to 4 below. All percentages in the present invention are percentages by weight of the total composition unless otherwise indicated and all ratios are by weight unless otherwise indicated.

< Experimental Example 1-3 >

Experimental Example 1: Evaluation of cleaning power

Contaminants were prepared with a mixed salt of tallow and soybean oil at a weight ratio of 7:3, and a certain amount of contaminants (2 g) was applied to a plate. After natural drying at room temperature for 1 hour, the detergent was sprayed on the dish and left for 5 minutes. After rinsing in running water for 30 seconds without applying physical force to rub with a loofah, the cleaning power of the dishes was evaluated. Visual discrimination was performed according to the following criteria.

[Criteria for cleaning power evaluation]

◎: more than 90% decontamination rate

○: Pollution Removal Rate 70% or more ~ less than 90%

△: 50% or more to less than 70% of decontamination rate

X: Less than 50% decontamination rate

Experimental Example 2. Evaluation of scale removal power

Detergent was sprayed on the water stained plate DC-30 (Center For Testmaterials BV, tile) and left for 5 minutes. After rinsing in running water for 30 seconds, the cleaning power of the dish was evaluated. Visual identification was performed according to the following criteria.

[Criteria for evaluation of cleaning power]

◎ : More than 90% decontamination rate

○ : Decontamination rate 70% or more ~ less than 90%

△: 50% or more to less than 70% of decontamination rate

X: Less than 50% decontamination rate

Experimental Example 3. Evaluation of anti-gelling power

The detergent composition was put in a spray container and sprayed twice a day for 10 days, and finally, the spraying state was checked and the gelling resistance was evaluated.

[Assessment Methods]

○: Excellent (no problem with spraying)

△: Normal (spray clogging occurs and liquid is sprayed only in some areas)

X: bad (bad discharge port is clogged and liquid is not sprayed)

Experimental Example 4. Injection force evaluation

After the detergent composition was put into a spray container and sprayed, the spraying state was checked and the spraying power of the contents was evaluated.

[Assessment Methods]

○: Excellent (the contents are evenly sprayed)

△: Normal (contents are not sprayed evenly, only in some areas)

X: Bad (not sprayed due to high viscosity of the contents)

As can be seen from Tables 5 and 6, it can be seen that compared to the Examples, the Comparative Examples have better overall performance in the physical properties of cleaning power, scale removal power, and gelling prevention power. Among them, Comparative Examples 2 and 4 did not include a chelating agent, and Comparative Example 13 did not include a chelating agent within the range of the present application. can In addition, in the case of Comparative Examples 4 to 8 that do not include a diol, it can be confirmed that the cleaning power and the gelling prevention power is inferior.

Claims (8)

with respect to the total weight of the composition,
1 to 20% by weight of a surfactant;
0.1 to 10% by weight of at least one chelating agent composed of carboxylic acid, aminocarboxylic acid and salts thereof;
3 to 30% by weight of a solubilizer comprising a diol; and
The remaining amount of water; including,
The diol comprises 3 to 10% by weight based on the total weight of the composition,
The pH of the composition represents 6.0 to 7.5,
The surfactant is a mixture of alpha olefin (12 to 16 carbon atoms) sulfonate, alkyl (12 to 16 carbon atoms) ether sodium sulfate and alkyl (6 to 18 carbon atoms) amine oxide, a liquid detergent composition for hand washing. delete delete According to claim 1,
The chelating agent is ethylenediamine tetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), citric acid, and at least one liquid detergent composition for hand washing selected from the group consisting of lactic acid. According to claim 1,
The solubilizing agent will further include an alkanol having 2 to 4 carbon atoms, a liquid detergent composition for hand washing. 6. The method of claim 5,
The mixing ratio of the alkanol and the diol is 1:0.2 to 1:0.7 by weight, a liquid detergent composition for hand washing. According to claim 1,
The composition has a viscosity (25 ℃) range of 1 to 100 cps, a liquid detergent composition for hand washing. According to claim 1,
The composition is a liquid detergent composition for hand washing, which is used by being sprayed in the form of a spray or foam.