KR20150065163A - Liquid detergent composition - Google Patents

Abstract

According to the present invention, a liquid detergent composition includes an ingredient (A), an ingredient (B), an ingredient (C), and an ingredient (D). The ingredient (A) is 0.5-20 mass%, the ingredient (B) is 0.2-8 mass%, and the ingredient (C) is 1.0-20 mass%, with respect to the total mass of the ingredients (A), (B), (C) and (D). The sum of the content of the ingredients (A), (B), and (C) is 1.7-30 mass% with respect to the total mass of the ingredients (A), (B), (C), and (D). A mass ratio of the ingredient (A) to the ingredient (B) is 2/1 to 20/1. The ingredient (A) is a polyoxyethylene alkyl ether-type nonionic surfactant represented by chemical formula (1). In the chemical formula (1), R^1 is a linear or branched alkyl group or alkenyl group having 10-14 carbon atoms; n is the number of 85-150; the ingredient (B) is linear/branched and saturated/unsaturated higher fatty acid having 8-16 carbon atoms; the ingredient (C) is polyvalent alcohol having 3-6 carbon atoms; and the ingredient (D) is water.

Description

[0001] LIQUID DETERGENT COMPOSITION [0002]

The present invention relates to a liquid detergent composition. Specifically, the present invention relates to a liquid detergent composition for filling a pump foamer.

In general, soaps have been used in detergent compositions such as body wash or facial wash, which not only provide a refreshing feel after washing but also show good foam properties, Soap is widely used today because it is a detergent base that provides good biodegradability and less burden on the environment.

The fine bubbles can enter small areas such as pores of the skin, and are excellent for dust and stains. Usually, for foaming, it is necessary to rub the detergent composition by hand or use a foaming net for a certain period of time for the air to enter, so foaming requires labor and time. On the other hand, products that contain a detergent composition filled in a pump former and used to dispense the composition in fine bubbles have become popular recently because the product saves labor and time for foaming, This is because a person who is not well able to easily obtain fine bubbles easily.

The pump formers allow air to pass through the porous membrane into the container, causing the content composition to foam through mixing of the composition with air. For the formation of foam, it must be able to pass through the porous membrane, and there is a problem of clogging of the contents composition in the porous membrane. Particularly, when soap is used, there is a problem that clogging is likely to occur through precipitation in a low temperature storage.

In order to solve this problem, JP-A-8-92064 proposes an aqueous liquid detergent composition which uses an organic salt of a fatty acid and is packed in a pump former. However, even with such attempts, problems such as formulation stability, clogging of the porous membrane, foam quality, feeling of use and the like are still not solved, and the composition is unsatisfactory.

JP-A-2006-342293 also provides a foam cleaning agent containing an organic salt of a fatty acid, a polyoxyethylene alkyl ether, an alkylol amide, and a polyhydric alcohol and having excellent storage stability at a low temperature and a high temperature.

Regarding the elasticity of the foam, JP-A-2006-183039 discloses a composition containing an N-acyl amino acid anionic surfactant, a soap having a Krafft point of 20 ° C or higher, a polyhydric alcohol, and a polyoxyethylene alkyl ether. It proposes a detergent composition in a foam container that has a foam quality of creamy and elastic, has excellent stability at low temperatures, and provides a moist skin feeling after washing.

However, the foam cleaner described in JP-A-2006-342293 has a problem in terms of elasticity of foam and persistence of foam.

In addition, the detergent described in JP-A-2006-183039 has room to improve the durability of the foam and the feeling after rinsing.

Accordingly, it is an object of the present invention to provide a method for producing a foamable foam material which does not cause clogging, is capable of maintaining a fine and high elastic foam, is excellent in long-term storage stability, To provide a liquid detergent composition.

As a result of continuous research for solving the above problems, the inventors of the present invention have found that the composition of the present invention is suitably constituted so as not to cause clogging, to maintain the high resilience foam, to provide excellent cleansing force and long- , Provided a good feel after washing, and provided the liquid detergent composition most suitable for pump formers.

That is, the liquid detergent composition according to the present invention is a liquid detergent composition comprising the following components (A), (B), (C) and (D) (B), (B), (C) and (D), the content of the component (B) is 0.5 to 20 mass% (A), (B), (C) and (D) in an amount of from 0.2 to 8 mass% based on the mass of the component (A) , (B) and (C) relative to the total mass of the components (A), (B), (C) and (D) is 1.7 to 30 mass% (B) content is from 2/1 to 20/1:

Component (A) is a polyoxyethylene alkyl ether type nonionic surfactant represented by the following formula (1):

Wherein R ¹ is a linear or branched alkyl or alkenyl group having from 10 to 14 carbon atoms, n is a number from 85 to 150;

Component (B) is a linear or branched saturated or unsaturated higher fatty acid having from 8 to 16 carbon atoms;

Component (C) is a polyhydric alcohol having 3 to 6 carbon atoms; And

Component (D) is water.

The liquid detergent composition of the present invention is particularly suitable as a detergent composition for a pump former, and relates to discharging bubbles from a pump former, which does not cause clogging, maintains a fine, high elastic foam, Provides a good feel after washing, and is the most suitable liquid cleaner composition for pump formers.

1 is a model drawing of a foam membrane.
Fig. 2 is a schematic view showing a state in which the component (A) is adsorbed onto the interface after the component (B) is adsorbed on the interface, and the foam membrane is viscosity-imparted by entanglement of the intestine polyethylene glycol chains.
Fig. 3 is a schematic view showing a state in which entanglement of the polyethylene glycol chain does not occur.

Hereinafter, the present invention will be described in detail.

The polyoxyethylene alkyl ether having an average addition mole number (n) of ethylene oxide as the component (A) of the present invention is 85 to 150 moles, and the nonionic surfactant ethylene oxide is added to the long chain alkyl alcohol (R ¹ OH).

The long chain alkyl alcohol (R ¹ OH) used as the starting material is not particularly limited, but a saturated or unsaturated linear or branched long chain alkyl alcohol having 10 to 14 carbon atoms can be used. Examples of such alcohols include decanol, lauryl alcohol, myristyl alcohol and the like, preferably lauryl alcohol and myristyl alcohol. They may be used alone, or two or more may be used in appropriate combination. In addition, long-chain alkyl alcohols are obtained by reducing fat-derived materials such as natural oils, or coconut oil or palm kernel oil, which is the major component of lauryl alcohol or myristyl alcohol.

When R < ^{1 >} has less than 10 carbon atoms, there is concern about the persistence of bubbles during washing and irritation to the skin and eyes. From this point, R ¹ is regulated to have 10 or more carbon atoms, but more preferably has 12 or more carbon atoms. In addition, when R ¹ has more than 14 carbon atoms, the low-temperature stability becomes worse. From this point, R ¹ is regulated to have 14 or fewer carbon atoms.

The addition mole number (n) of ethylene oxide is 85 to 150 mol. When the addition mole number of the ethylene oxide is less than 85 moles, the elasticity of the foam and the stability of the foam are reduced and a moist feeling after washing is not sufficiently obtained. From this point of view, the addition mole number (n) of ethylene oxide is more preferably 90 mol or more, and still more preferably 95 mol or more. In addition, when the addition mole number (n) of ethylene oxide exceeds 150 mol, the viscosity at the time of melting becomes very high and becomes more difficult to handle, so that not only industrial production is difficult but also low temperature stability is obtained by precipitation of polyether crystals It gets worse. From this point of view, the addition mole number (n) of ethylene oxide is more preferably 130 moles or less, and more preferably 120 moles or less.

As fatty acids for use in the fatty acid salt of component (B) there may be mentioned, for example, an exemplary fatty acid having 8 to 16 carbon atoms such as capric, caprylic, lauric, myristic, Lt; / RTI > They may be used alone, or two or more may be used in appropriate combination.

When the fatty acid for use in the fatty acid salt of component (B) has less than 8 carbon atoms, there is concern about the persistence of the foam and irritation to the skin and eyes during washing. From this point of view, the fatty acid preferably has 10 or more carbon atoms, but more preferably has 12 or more carbon atoms. In addition, when the fatty acid has more than 16 carbon atoms, the low-temperature stability and the stability of the foam become worse. For this reason, it is more preferable that the fatty acid has 14 carbon atoms or less. Here, from the viewpoint of the detergency and foam-forming ability, higher fatty acids having 12 to 16 carbon atoms are preferably used, and higher fatty acids having 12 to 14 carbon atoms are more preferable. They may be used alone, or two or more may be used in appropriate combination. Furthermore, fatty acids obtained by hydrolyzing fats and natural oils such as coconut oil or palm kernel oil can also be suitably used.

Examples of the fatty acid salt of the component (B) include alkali metal salts and organic amine salts obtained by saponifying or neutralizing a fatty acid with an alkali. As the alkali to be used, inorganic alkalis such as sodium hydroxide, potassium hydroxide, sodium carbonate, and potassium carbonate; Organic alkalis such as monoethanolamine, diethanolamine, triethanolamine, trimethylamine, and triethylamine; May be mentioned. In the present invention, from the viewpoint of foam formation of the detergent composition, an alkali metal salt is preferably used, and a potassium salt is more preferable.

The Krafft point of the fatty acid salt of the component (B) is preferably 19 DEG C or lower. The kraft point is measured by the following method.

A fatty acid salt having a concentration of 1.0% by mass was poured into a test tube, the pH was adjusted to 10.0 using an alkali such as potassium hydroxide, and an anion surfactant solution . The sample was placed on a hot water bath at 5 DEG C and the temperature was raised by 1 DEG C per hour. In the case where no insoluble matter was observed, the kraft point was considered to be 5 DEG C or less, and when the insoluble matter was present, the temperature at which the insoluble matter dissolved was determined as the kraft point.

The polyhydric alcohol of component (C) is used to prevent clogging of the pump former and to provide a moist feeling after washing. The polyhydric alcohol of component (C) is not particularly limited and includes, for example, glycerin, diglycerin, 1,3-butylene glycol, ethylene glycol, propylene glycol, dipropylene glycol, sorbitol, maltitol, , 1,2-hexanediol, and the like. Either one of these may be used alone, or two or more may be used in appropriate combination.

The polyhydric alcohol of component (C) preferably has 3 to 5 carbon atoms. The number of hydroxyl groups in the polyhydric alcohol of component (C) is preferably 3 to 5.

Component (D) is water, and purified water such as distilled water or ion-exchanged water may be more preferably used.

When the total mass of the components (A), (B), (C) and (D) is assumed to be 100 mass%, the content of the component (A) is adjusted to 0.5 to 20 mass%.

When the content of the component (A) exceeds 20 mass%, not only the viscosity of the cleaning agent liquid increases but also the discharge performance from the pump former becomes worse, and stickiness also occurs during washing and after washing. From this point of view, the content of the component (A) is more preferably 18% by mass or less, and more preferably 16% by mass or less. Further, when the content of the component (A) is less than 0.5% by mass, the persistence of the foam is insufficient. From this point of view, the content of the component (A) is preferably 1.0% by mass or more, and more preferably 2% by mass or more.

When the total mass of the components (A), (B), (C) and (D) is assumed to be 100 mass%, the content of the component (B) is adjusted to 0.3 to 8 mass% with respect to the total amount of the liquid detergent composition do.

When the content of the component (B) exceeds 8 mass%, there is a concern about deterioration of the discharge performance due to the low-temperature stability and the thickening of the cleaning liquid. From this point of view, the content of the component (B) is preferably 6 mass% or less, and more preferably 4 mass% or less. Further, when the content of the component (B) is less than 0.3% by mass, not only the foam is not discharged but also the cleaning power is reduced. From this point of view, the content of the component (B) is preferably 0.4% by mass or more, and more preferably 0.6% by mass or more.

When the total mass of the components (A), (B), (C) and (D) is assumed to be 100 mass%, the content of the component (C) is adjusted to 1.0 to 20 mass%.

When the content of the component (C) is less than 1.0% by mass, clogging occurs and the discharge performance becomes worse. From this point of view, the content of the component (C) is more preferably 3% by mass or more, and more preferably 5% by mass or more. When the content of the component (C) exceeds 20 mass%, there is a concern about irritation to the skin, stickiness after washing, and stickiness after washing. From this point of view, the content of the component (C) is preferably 18 mass% or less, and more preferably 15 mass% or less.

(A + B + C) of component (A), component (B) and component (C), assuming that the total mass of components (A), (B), C] is adjusted to 1.7 to 30 mass%.

When [A + B + C] exceeds 30% by mass, not only there is a disadvantage from the viewpoint of cost, but also there is a fear that the viscosity of the cleaning agent liquid increases and the discharge performance becomes worse. From this point of view, [A + B + C] is preferably 25 mass% or less, more preferably 20 mass% or less. In addition, when [A + B + C] is less than 1.7% by mass, the persistence of the foam and the cleaning power are insufficient. From this point of view, [A + B + C] is preferably 2% by mass or more, and more preferably 4% by mass or more.

Further, the mass ratio [A / B] to the content of the component (B) in the content of the component (A) is adjusted to 1/8 to 40/1. When [A / B] exceeds 40/1, the persistence of the foam and the cleaning power during washing are insufficient. From this point of view, [A / B] is more preferably 20/1 or less, and more preferably 16/1 or less. Also, when [A / B] is less than 1/8, the persistence of the foam during washing and the moist feeling after washing are insufficient. From this point of view, [A / B] is preferably 1/1 or more, more preferably 2/1 or more.

Hereinafter, the composition according to the present invention will be described in more detail.

1 is a model drawing of a foam membrane. When the gas-liquid interface is newly formed, the component (B) having excellent dynamic surface tension rapidly adsorbs from the interior of the water to the interface to stabilize the interface (FIG. 1). After the component (B) is adsorbed to the interface, the component (A) is then adsorbed to the interface, and the foam membrane is thickened by entanglement of long chain polyethylene glycol (hereinafter referred to as "PEG chain"), The sustainability is greatly improved (Fig. 2). When the addition mole number of ethylene oxide is in the low molecular range, that is, when the addition mole number of ethylene oxide is 80 mole or less, the entanglement of the PEG chain does not occur as shown in FIG. 3 and the resilience and persistence of the foam are insufficient .

In addition, other ingredients may be added to the detergent composition of the present invention to the extent that the effect of the present invention is not impaired. Thus, other optional ingredients such as, for example, blended oils, and fats such as vegetable oils and animal oils; Hydrocarbon oils such as squalene, liquid paraffin and hydrogenated polyisobutene; Higher alcohols such as cetyl alcohol, stearyl alcohol, and cetostearyl alcohol; Cyclic silicon. Dimethylpolysiloxane, and amino-modified polysiloxanes; Ester oils such as 2-ethylhexyl palmitate, glyceryl tri (caprylic acid / capric acid), and isopropyl myristate; Cationic surfactants such as stearyl trimethyl ammonium chloride, benzalkonium chloride, and cocoyl arginine-ethyl PCA; Anionic surfactants other than component (B) such as polyoxyethylene lauryl ether sulfate and? -Olefin-sulfonate; Amphoteric surfactants such as alkyldimethylaminoacetic acid betaine, N-acyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, and alkyl iminodiacetic acid salts; Nonionic surfactants other than component (A) such as polyoxyethylene alkyl ethers, polyglycerin fatty acid esters, and polyoxyethylene glycerin fatty acid esters; Solvents such as ethanol, propylene glycol, and glycerin; PH adjusting agents such as citric acid salt, succinic acid salt, malic acid salt, and tartaric acid salt; Antioxidants such as tocopherol; And polysaccharides, amino acids, peptides, antiseptic, perfumes, coloring agents, and the like.

The pH value of the liquid detergent composition of the present invention is not particularly limited, but is preferably 6.5 to 11.0, more preferably 7.0 to 10.0, even more preferably 7.0 to 9.0 at 25 占 폚. When the pH is less than 6.5, persistence of the foam is insufficient, and when the pH exceeds 11.0, there is a concern about irritation to the skin.

The formulation of the liquid detergent composition in the present invention is not particularly limited, but the composition is suitable as a detergent for filling a former container which discharges the liquid detergent composition in a foam form. As the foam container, for example, a non-gaseous foam-ejection container can be mentioned. The non-gaseous foam-dispensing container is not particularly limited as long as the liquid detergent solution can be discharged in the form of a foam mixed with air. Examples thereof include a squeeze foamer capable of ejecting foam by squeezing a bottle body by hand, a pump foamer capable of ejecting foam by pressing the nozzle downward, and the like , The container can be appropriately selected according to the purpose. However, the composition may be used as such, if viscosity is not required for the final formulation.

The liquid detergent composition of the present invention can be used as a body shampoo, hand soap, hair shampoo, etc. in addition to a cleanser for removing makeup.

Example

In the following, components (A), (B), (C) and (D) are specified as mass% based on the total mass of components (A), (B), (C) The components are specified in parts by mass when the total mass of components (A), (B), (C) and (D) is assumed to be 100 parts by mass. The present invention will be described in more detail with reference to embodiments, but the present invention is not intended to be limited thereto.

≪ Preparation of detergent composition >

All the individual raw materials of each of Examples 1 to 6 and Comparative Examples 1 to 6 shown in Tables 1 and 2 were filled in a beaker and stirred with a propeller for 1 hour while heating in a 60 ° C water heater. After confirming the dissolution, the whole was cooled to 40 캜 or lower to obtain a detergent composition. The prepared detergent composition was filled in a pump former and used in the following evaluation.

≪ Evaluation of detergent composition >

Ten expert panels used each of the detergent compositions in the pump former immediately after preparation. They evaluated the fineness of the bubbles according to the following evaluation criteria. The average value of the scores shown by the ten panelists was determined, and a composition having an average value of at least 3.0 was determined to be suitable.

<Fine of bubbles>

4 points: Very fine

3 points: slightly fine

2 points: Not a little fine

1 point: Not fine

<Clogging>

Immediately after preparation in the pump former, each of the detergent compositions was pressed three times (about 30 mL). Thereafter, after leaving for one week, the bubbles were discharged again, and the size of the bubbles was visually observed.

A: A uniform foam can be discharged.

C: The foam can not be discharged.

<Evaluation of elasticity of bubbles>

Each of the detergent compositions in the pump former was pressed once (approximately 10 mL) immediately after preparation, and the viscosities observed after 100 seconds from the evaluation were measured using a cone-plate type rheometer at a speed of 100 s ^-1 . At this time, a cone plate type having a diameter of 50 mm and an angle of 2 was used as a measuring tool, the measurement was carried out at a measurement temperature of 25 캜, and a composition having a foam viscosity of 250 mPa.s or the like was determined to be suitable.

<Stability of foam>

50 mL of foam was dispensed from the pump former and placed in a 100 mL graduated cylinder, and after 5 minutes the appearance of the foam was visually confirmed.

A: The appearance is unchanged.

B: The volume of the foam has decreased but more than 50% of the foam remains.

C: The liquid drainage continued, and the volume of the foam was reduced to less than 50%.

<Evaluation of skin feeling after washing>

After 10 expert panels used each of the detergent compositions in the pump formers, they performed a functional assessment according to the following criteria for skin feel after washing. The average value of the scores shown by the ten panelists was determined, and a composition having an average value of at least 3.0 was determined to be suitable.

4: There is a feeling of good refreshing.

3: There is a slight feeling of softness.

2: There is a little feeling of refreshing.

1: No feeling of refreshing.

<Low Temperature Stability>

50 g of detergent composition was charged into a 100 mL spiral tube and tightly closed with a helical tube and stored in a constant temperature chamber at 0 DEG C for one month. After the test was confirmed, the state of the sample was confirmed, and the evaluation was carried out according to the following criteria.

A: No change in the appearance of the sample was observed.

B: Appearance of turbidity was confirmed.

In each embodiment, the effects of the present invention have been shown.

In Comparative Example 1, the regenerating power of the reference 3 was tried, but the detergent composition was inferior in the persistence of the foam and the feeling after washing (feeling of refreshing feeling).

In Comparative Example 2, since the n of the component (A) was less than 85 moles, the detergent composition was inferior in elasticity of foam and persistence of foam.

In Comparative Example 3, since the n of the component (A) was less than 85 moles, the detergent composition was inferior in the elasticity of the foam, the persistence of the foam, and the low temperature stability.

In Comparative Example 4, R ¹ of the component (A) was a stearyl group, the detergent composition was in the form of a gel, and no bubbles could be discharged. The detergent composition showed weak foam resilience, poor foam stability and low temperature stability.

In Comparative Example 5, since the component (A) had no alkyl group, the detergent composition showed weak foam elasticity, inferior foam stability and low temperature stability.

In Comparative Example 6, a stearate was used instead of the component (B), but the salt was precipitated and evaluation was impossible.

In addition, the effect of the present invention is shown in a baby shampoo having the following composition.

(Example 7)

mass(%)

Polyoxyethylene (120) lauryl ether    5

Coconut oil fatty acid potassium    2

Propylene glycol    3

1,3-butylene glycol    3

Purified water  Remainder

gun(%)   100

(Other ingredients)

Lauryldimethylaminoacetic acid betaine    3

perfume    0.1

Citric acid  Proper amount

(adjusted to pH 8)

(Example 8)

mass(%)

Polyoxyethylene (100) myristyl ether    5

Potassium myristate    2

Sorbitol    3

1,3-butylene glycol    3

Purified water  Remainder

gun(%)   100

(Other ingredients)

Sodium lauryl amino diacetate    2

2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine    2

Antiseptic    0.2

perfume    0.1

Citric acid  Proper amount

(adjusted to pH 8)

(Example 9)

mass(%)

Polyoxyethylene (100) lauryl ether    5

Potassium myristate    2

Sorbitol    3

1,3-butylene glycol    3

Purified water  Remainder

gun(%)   100

(Other ingredients)

Sodium lauryl amino diacetate    2

2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine    2

Cocamide DEA    2

Tocopherol    0.01

perfume    0.1

Citric acid  Proper amount

   (adjusted to pH 8)

Claims (1)

A liquid detergent composition comprising the following components (A), (B), (C) and (D)
The content of the component (A) is 0.5 to 20 mass% with respect to the total mass of the components (A), (B), (C) and (D)
The content of the component (B) is 0.2 to 8 mass% with respect to the total mass of the components (A), (B), (C) and (D)
The content of the component (C) is 1.0 to 20 mass% with respect to the total mass of the components (A), (B), (C) and (D)
The sum of the contents of the component (A), the component (B) and the component (C) is 1.7 to 30 mass% with respect to the total mass of the components (A), (B), (C)
The mass ratio of the component (A) content to the component (B) content is 2/1 to 20/1,
The component (A) is a polyoxyethylene alkyl ether type nonionic surfactant represented by the following formula (1)

Wherein R ¹ is a linear or branched alkyl or alkenyl group having from 10 to 14 carbon atoms, n is a number from 85 to 150;
Component (B) is a linear or branched saturated or unsaturated higher fatty acid having from 8 to 16 carbon atoms;
Component (C) is a polyhydric alcohol having 3 to 6 carbon atoms; And
Component (D) is water.

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