JP6312581B2 - Cleaning composition - Google Patents

Description

  The present invention is excellent in low-temperature stability in a detergent mainly composed of a fatty acid salt, good foam is discharged from the former container, and the foam has good persistence, foaming during cleaning, excellent foam quality, and during rinsing The present invention relates to a skin cleanser that provides a refreshing feel without being wet.

  Conventionally, a skin cleanser has been used by lathering a liquid cleanser with a hand, towel, net or the like. In recent years, a former container that can discharge a cleaning agent in a foam form is used. These can mix and foam the air taken from the outside of the container and the cleaning agent inside the dispenser and pass through the net, so that fine bubbles can be discharged from the tip of the nozzle. Since it is discharged from the beginning as foam, it is highly convenient and is used in a wide range of applications such as body soaps, hand soaps, shampoos, and kitchen cleaners.

  Many skin cleansing agents have used one or a combination of two or more anionic surfactants such as alkyl ether sulfates, fatty acid salts, fatty acid glutamates, fatty acid glycine salts, and fatty acid alanine salts as the main cleaning ingredients. . In particular, fatty acid salts are not only excellent in foaming and rinsing properties, but also have good biodegradability, and are therefore widely used as the main agent of cleaning agents.

  However, when a fatty acid salt is selected as the main surfactant in the cleaning composition, there is a problem that precipitation occurs at a low temperature and clogging occurs when discharged in a former container. In order to improve the low-temperature stability of the fatty acid salt, there is a method of blending an amphoteric surfactant or a semi-surfactant (Patent Document 1). It is unsuitable for discharging in a former container having a mechanism for homogenizing foam through the body. A method of using an amphoteric surfactant in combination with a specific salt has also been proposed (Patent Document 2), but it is similarly unsuitable for ejection in a former container because of its viscosity, and the type of amphoteric surfactant Depending on the blending ratio, there are problems such as the occurrence of sliminess during rinsing. There is a need for a cleaning agent that guarantees low-temperature stability, is excellent in the dischargeability of the former container, and is also excellent in rinsing properties.

  On the other hand, as a technique for improving the clogging of the porous body inside the former container, a method of blending a dihydric alcohol and / or a lower monohydric alcohol with a specific surfactant (Patent Documents 3 and 4) As a technique for improving the low temperature stability, a method of blending a surfactant component with an equal amount or more of a dihydric alcohol (Patent Document 5) has been proposed. However, in the case of a detergent with a low concentration of 10% by weight or less surfactant, if a large amount of dihydric alcohol is added, the foam persistence is poor, and the foam disappears in the process of rubbing the washing part by hand, and sufficient foaming occurs. Cannot be obtained. In particular, when washing a portion with many irregularities such as a hand soap or a foot soap, there is a demand for a cleaning agent that maintains the foam continuously and further foams in order to spread the foam over the entire cleaning area.

Japanese Patent No. 4002622 JP 2004-331902 A Japanese Patent No. 3562548 JP 2001-278777 A Japanese Patent No. 4631378

  The present invention is excellent in low-temperature stability in a detergent mainly composed of a fatty acid salt, good foam is discharged from the former container, and the foam has good persistence, foaming during cleaning, excellent foam quality, and during rinsing It is an object of the present invention to provide a skin cleanser that provides a refreshing feel without being wet.

As a result of intensive studies to solve the above problems, the present inventors have found that the above problems can be solved by blending fatty acid salt with lauryldimethylaminoacetic acid betaine and dihydric alcohol in a specific formulation. The present invention has been completed.
That is, the present invention is as follows.

[1] The following (a) to (c),
(A) Fatty acid salt 2-9 mass%
(B) 0.5 to 4% by mass of lauryldimethylaminoacetic acid betaine
(C) 1 to 10% by mass of one or more dihydric alcohols
And the sum (a) + (b) of the blending amounts of the component (a) and the component (b) is 3 to 10% by mass, and the blending ratio (b) / (a) is 0.1 to 0. A skin cleansing composition characterized by filling a former container with a cleansing agent of .5.
[2] The skin cleanser composition according to [1], wherein the fatty acid salt of the component (a) is a potassium salt.
[3] The skin cleanser according to [1] or [2] above, which contains at least one of propylene glycol, 1,3-butylene glycol, hexanediol, and dipropylene glycol as the component (c). Composition.
The present invention includes the following aspects of the invention:
[A] A skin cleanser composition discharged from a former container,
Containing the following components (a) to (c),
(A) 2-9 mass% fatty acid salt,
(B) 0.5-4% by mass of lauryldimethylaminoacetic acid betaine,
(C) 1 to 10% by mass of one or more dihydric alcohols;
And the sum (a) + (b) of the blending amount (mass%) of the component (a) and the component (b) is 3 to 10 mass%, and the blending ratio (b) / (a) is 0.1 to 0. .5, a skin cleanser composition characterized by
(However, a liquid detergent composition containing polyoxyethylene sorbitan fatty acid ester solid or polyoxyethylene sorbitan monooleate at 30 ° C. is excluded).
[B] A skin cleanser composition discharged from a former container,
Containing the following components (a) to (c),
(A) 2-9 mass% fatty acid salt,
(B) 0.5-4% by mass of lauryldimethylaminoacetic acid betaine,
(C) 1 to 10% by mass of one or more dihydric alcohols;
And the sum (a) + (b) of the blending amount (mass%) of the component (a) and the component (b) is 3 to 10 mass%, and the blending ratio (b) / (a) is 0.1 to 0. .5,
(B) Lauryldimethylaminoacetic acid betaine is the only betaine-type amphoteric surfactant contained in the skin cleansing composition.
[C] The skin cleanser composition according to [A] or [B], wherein the fatty acid salt of the component (a) is a potassium salt of fatty acid.
[D] Any of [A] to [C] containing at least one selected from the group consisting of propylene glycol, 1,3-butylene glycol, hexanediol, and dipropylene glycol as the component (c). A skin cleanser composition as described in 1. above.
[E] Further described in any one of [A] to [D], further comprising at least one selected from the group consisting of a trihydric or higher polyhydric alcohol, a nonionic surfactant, and an anionic surfactant. A skin cleanser composition.

  The skin cleanser of the present invention is excellent in low-temperature stability in a cleanser mainly composed of a fatty acid salt, good foam is discharged from the former container, and the foam has good persistence. Excellent and has the effect of providing a refreshing feel when rinsing.

Hereinafter, the present invention will be described in detail.
The component (a) used in the cleaning agent of the present invention is a fatty acid salt, which contributes to foaming of the cleaning agent and imparts a refreshing feeling during rinsing. The fatty acid salt to be used may be produced by heating and mixing a fatty acid and an alkali by a neutralization method, or by heating and mixing an oil and fat by an saponification method. The fatty acid may be a saturated fatty acid or an unsaturated fatty acid, and is preferably a saturated fatty acid. The carbon number is preferably 12-16. Specific examples include lauric acid, myristic acid, palmitic acid, and a mixture of two or more thereof. The fats and oils may be of any origin, and those of plant origin are preferred. Specific examples are palm oil and palm kernel oil. Examples of the fatty acid salt include alkali metal salts such as sodium and potassium, ammonium salts, alkanolamine salts such as monoethanolamine, diethanolamine and triethanolamine, and arginine. Among these, a potassium salt having excellent foam quality and high versatility is preferable. The blending amount of the fatty acid salt is 2 to 9% by mass, preferably 4 to 8% by mass, based on the total mass of the detergent composition. When the blending amount is less than 2% by mass, sufficient foaming cannot be obtained. When the blending amount is more than 9% by mass, uniform and good bubbles cannot be ejected when discharged from the former container, and the pump clogs over time.

The component (b) used in the cleaning agent of the present invention is lauryldimethylaminoacetic acid betaine which is one of betaine type amphoteric surfactants. Lauryldimethylaminoacetic acid betaine is one of the betaine-type amphoteric surfactants having quaternary ammonium. In addition to lauryl dimethylaminoacetic acid betaine, betaine-type amphoteric surfactants include alkyldimethylaminoacetic acid betaine and fatty acid amidopropyl betaine, which are also frequently used in skin cleansing agents. The effect of improving the sustainability of is known. Among the betaine double-sided surfactants, only lauryldimethylaminoacetic acid betaine has the effect of improving the low-temperature stability of the soap component, making it difficult to inhibit the refreshing feel when rinsing the soap, and further improving the foam quality. The blending amount is 0.5 to 4% by mass, preferably 1 to 3% by mass, based on the total mass of the cleaning composition. When it is less than 0.5% by mass, the low-temperature stability is poor and white turbid precipitation occurs at a low temperature. When the amount is more than 4% by mass, the refreshing feeling at the time of rinsing is impaired. As lauryldimethylaminoacetic acid betaine, commercially available products such as Ricavion A-100 (Shin Nihon Rika Co., Ltd.), NIKKOL AM-301 (Nikko Chemicals Co., Ltd.) and the like can be used.

The component (c) used in the cleaning agent of the present invention is a dihydric alcohol. Any of those commonly used for skin cleansing agents may be used, and among these, propylene glycol, 1,3-butylene glycol, hexanediol and dipropylene glycol are the best. One type may be used or two or more types may be used in combination. The dihydric alcohol is known to suppress the precipitation of the surfactant at a low temperature and clogging of the former container, and to give an antiseptic effect, but in the present invention, it is also good when discharged in the former container. When a foam is formed, it contributes to the formation of a fine and smooth textured foam. The blending amount is 1 to 10% by mass, preferably 1 to 5% by mass, based on the total mass of the cleaning composition. If the blending amount is less than 1% by mass, sufficient foam quality imparting effect cannot be obtained, and the low temperature stability is poor and white precipitation occurs. When the blending amount is more than 10% by mass, the original foaming property of the surfactant is inhibited and a sufficient foam amount cannot be obtained.

  In the cleaning agent of the present invention, the sum (a) + (b) of the blending amounts of the component (a) and the component (b) is preferably 3 to 10% by mass. When the amount is less than 3% by mass, sufficient foaming as a cleaning agent cannot be obtained, and when it is stored below the freezing point, it easily freezes. On the other hand, when the amount is more than 10% by mass, the liquid is somewhat viscous, and when discharged with a former container, the bubbles are non-uniform and poorly formed. Furthermore, it feels slimy during rinsing and requires a lot of time for rinsing.

  In the cleaning agent of the present invention, the ratio (b) / (a) of the blending amount of the component (b) to the component (a) is preferably 0.1 to 0.5. If it is less than 0.1, the low-temperature stability is poor and white turbid precipitation occurs at low temperatures. When it is more than 0.5, a refreshing feel is lost during rinsing.

Glycerin moisturizing purposes, trihydric or higher polyhydric alcohols such as polyglycerol, ethanol, lower alcohols, polyethylene glycol fatty acid esters for the purpose of improving skin mildness and foam quality such as isopropyl alcohol, and poly alkyl glucosides Nonionic surfactants, anionic surfactants such as sodium cocoyl glutamate and sodium cocoylalanine, pH adjusters such as citric acid and malic acid, bactericides such as isopropylmethylphenol and parachlorometaxylenol, preservatives, chelates Agents, ultraviolet absorbers, natural extracts derived from animals and plants, pigments and fragrances can be blended.

    Each compounding component used in the cleaning composition of the present invention may be a commercially available product or may be produced by a known method and used. The detergent composition of the present invention is prepared by stirring and mixing the above-described components and additives to be blended as necessary with a predetermined amount of water according to a conventional method.

  The foamer container used for foaming the cleaning composition of the present invention is provided with the cleaning composition of the present invention and air taken from the outside inside the dispenser by a squeeze type, pump type, motor type or the like. It is possible to use a product having a mechanism for mixing and foaming at a foam generating unit, homogenizing through a porous body, and discharging a fine amount of fine foam from the nozzle tip. In particular, a pump type and a motor type are preferable. The pump type has a mechanism that pushes down the pump manually or detects it with a sensor, automatically moves the pump part, and sucks the liquid into the foam generation unit. The motor type has a mechanism that senses with a sensor or the like and activates the motor to suck the liquid into the foam generation unit. Examples of the porous body include a net and a sponge, but it is preferable to use a net from the viewpoint of eliminating clogging. It is preferable to use a single mesh or a combination of a plurality of meshes of 100 to 400 mesh.

  The cleaning composition of the present invention can be used in the same manner as the cleaning agent used in conventional former containers, and can be used for, for example, face-washing foam, cleansing foam, shaping foam, hand soap, foot soap, body soap and the like.

  EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated more concretely, this invention is not limited to a following example.

[Examples 1-9, Comparative Examples 1-8]
Each component shown in Tables 1 to 3 was stirred and mixed according to a conventional method to prepare each cleaning composition of Examples 1 to 9 and Comparative Examples 1 to 8, and performance evaluation was performed on each.
Evaluation items and evaluation methods are as follows, and the evaluation results are shown in Tables 1, 2 and 3.

1. Evaluation of low-temperature stability Each detergent composition was filled in a 50 mL PET sample bottle and stored for 1 month in a thermostatic bath maintained at -5 ± 2 ° C. When there was no change in appearance, it was marked as ◯, and when it became cloudy, it was marked as x.

2. Evaluation of ejection performance Each washed product was ejected with a manual pump-type former container, and the foam was visually evaluated to observe whether the foam had excellent foaming properties and fine texture. It was excellent in foaming property, and when fine foam was ejected, it was evaluated as ◯, and when foam was not sufficiently foamed and coarse texture was ejected, it was rated as x.

3. Sensory evaluation at the time of hand washing After pre-washing with coconut oil potash soap, each detergent composition was discharged twice in a manual-former container, taken into the hand, hand-washed for 20 seconds, and rinsed for 10 seconds. Ten subjects evaluated foaming, foam quality, and sliminess, and investigated the number of respondents who answered that they were excellent.

Evaluation criteria (foaming, foam quality, foam persistence)
◎: More than 9 people who answered that the foam has excellent foam persistence and bubbling, and fine smooth foam. ○: The person who answered that it has excellent foam persistence and bubbling and fine smooth smooth foam. Is 5-8 people ×: Less than 4 people who answered that the foam has excellent durability and foaming and is fine and smooth.

Evaluation criteria (slimming during rinsing)
◎: 9 or more people who answered that they will not be wet when rinsing ○: 5 to 8 people who answered that they will not be wet when rinsing ×: 4 or less people who said that they will not be wet when rinsing

  From Example 1, the foam cleaning agent of the present invention was excellent in low-temperature stability, and was excellent in dischargeability, foaming and rinsing. On the other hand, Comparative Examples 1, 2, and 3 which did not contain the component (b) and were substituted with a betaine amphoteric surfactant other than lauryldimethylaminoacetic acid betaine were poor in low-temperature stability and became cloudy. Many respondents said that they had no foam persistence and were inferior in foaming and foam quality.

  From Examples 2 to 6, the foam detergent of the present invention was excellent in low-temperature stability and excellent in ejection properties, foaming and rinsing. On the other hand, Comparative Example 4 in which (b) / (a) was 2.3 had poor rinsing properties and many people felt slimy. In Comparative Example 5 containing 15% by mass of the component (a), the liquid was somewhat viscous, and the foams at the time of ejection were uneven and poorly formed. Bubbling was poor and a concentrated liquid remained in the hand, so that a refreshing washing comfort was not obtained even when rinsing. In Comparative Example 6 in which the component (c) was not blended, soap was precipitated at -5 ° C., resulting in white turbid precipitation. Many people responded that the foam quality was not enough. In Comparative Example 7 containing a large amount of component (c), fine foam is obtained when foamed, but since foaming is not sufficient, sufficient foam cannot be distributed throughout the hand during hand washing, and the feeling of use Many people said that was bad.

From Examples 7 to 9, the foam cleaning agent of the present invention was excellent in low-temperature stability and excellent in dischargeability, foaming and rinsing. Even when a nonionic surfactant or an anionic surfactant was added as the other component, no effect was observed. On the other hand, the comparative example 8 which does not mix | blend (b) component and is only a nonionic surfactant was poor in low temperature stability.

  A fatty acid salt that has excellent low-temperature stability, good foam is discharged from the former container, and the foam has good persistence, foams when washed, has excellent foam quality, and has a refreshing feel when it is rinsed It can be applied to the main cleaning agent.

Claims (5)

A skin cleansing composition discharged from a former container,
Containing the following components (a) to (c),
(A) 2-9 mass% fatty acid salt,
(B) 0.5-4% by mass of lauryldimethylaminoacetic acid betaine,
(C) The total amount of one or more dihydric alcohols is 1 to 10% by mass , of which the total amount of propylene glycol and dipropylene glycol is 1 to 3% by mass ;
And the sum (a) + (b) of the blending amount (mass%) of the component (a) and the component (b) is 3 to 10 mass%, and the blending ratio (b) / (a) is 0.1 to 0. A skin cleanser composition (except for a liquid cleanser composition containing solid polyoxyethylene sorbitan fatty acid ester or polyoxyethylene sorbitan monooleate at 30 ° C.). A skin cleansing composition discharged from a former container,
Containing the following components (a) to (c),
(A) 2-9 mass% fatty acid salt,
(B) 0.5-4% by mass of lauryldimethylaminoacetic acid betaine,
(C) The total amount of one or more dihydric alcohols is 1 to 10% by mass , of which the total amount of propylene glycol and dipropylene glycol is 1 to 3% by mass ;
And the sum (a) + (b) of the blending amount (mass%) of the component (a) and the component (b) is 3 to 10 mass%, and the blending ratio (b) / (a) is 0.1 to 0. .5,
(B) Lauryldimethylaminoacetic acid betaine is the only betaine-type amphoteric surfactant contained in the skin cleansing composition.   The skin cleansing composition according to claim 1 or 2, wherein the fatty acid salt of the component (a) is a potassium salt of fatty acid.   The skin cleansing according to any one of claims 1 to 3, comprising at least one selected from the group consisting of propylene glycol, 1,3-butylene glycol, hexanediol, and dipropylene glycol as the component (c). Agent composition.   Furthermore, the skin cleanser composition in any one of Claims 1-4 containing at least 1 sort (s) selected from the group which consists of a polyhydric alcohol more than trivalence, a nonionic surfactant, and an anionic surfactant. object.