JPH11246890A - Cleanser composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cleanser composition mild in irritation against skin, and having a highly mild property and an excellent cleansing power even in the case of a high surfactant concentration by compounding a specific N-alkylamino acid (salt) and a polyhydroxyfatty acid amide. SOLUTION: This cleanser composition contains (A) an N-alkylamino acid of the formula: R1 NH(CH2 )m COOM1 [R1 is a 6-22C linear or branched alkyl or alkenyl; (m) is 1 or 2; M1 is H, an alkali metal ion and the like] (for example, N-decyl-β-alanine) or its salt and (B) a polyhydroxyfatty acid amide of the formula (R2 is an 8-18C linear or branched alkyl or alkenyl; R3 is hydrogen, a 1-4C hydrocarbyl and the like; X is glucose and/or maltose) (for example, N-methylalkylglucamide). The components A and B are compounded in an A/B weight ratio of 30/70 to 70/30 and in a total amount of 1.5-30 wt.% based on the total amount of the composition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition, and more specifically, it has mild mild irritation to the skin, is extremely mild, and is extremely resistant to oil stains attached to a hydrophobic hard surface. The present invention relates to a detergent composition having excellent detergency, which is extremely useful as a detergent for hard surfaces, especially for kitchens.

[0002]

2. Description of the Related Art Conventionally, anionic surfactant-based compositions have been developed as detergent compositions, but when these are used as kitchen detergents, the hands may be rough. Therefore, the combined use with amine oxide has been proposed and put to practical use, but nowadays when kitchen detergents are made compact and concentrated, and the concentration of surfactants in detergents that come into direct contact with the hands is increased, it will be further increased. There is an increasing demand for improved mildness.

Therefore, recently, it has been proposed to use an amphoteric surfactant such as amidopropyl betaine having a high mildness (for example, JP-A-4-253943 and JP-A-6-116596, JP-A-6-116596). -62388
Japanese Patent Laid-Open Publication No. 6-502119), a composition in which a sugar-derived nonionic surfactant is used in combination is proposed.
No. 8, gazette of Japanese Patent Publication No. 6-505032, etc.).

However, the former composition using the amphoteric surfactant in combination has satisfactory mildness but lacks the detergency, and the latter composition using the sugar-derived nonionic surfactant in the latter composition has a sugar-derived nonionic surface. It is mixed with a surfactant showing a synergistic effect in order to cover the lack of detergency of the active agent, but there is a problem that it is highly irritating and inferior in mildness to the skin. In particular, the detergency against oil stains attached to hydrophobic hard surfaces such as tappers is poor, and it is not satisfactory in the present circumstances in consideration of the lifestyle of recent years. Therefore, in recent years, there has been a strong demand for the development of a detergent composition which has mild mild irritation to the skin and high mildness and has excellent detergency.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is an object of the present invention to solve this problem. Even when the surfactant concentration is high, the skin irritation is mild and the mildness is high. It is an object of the present invention to provide a detergent composition having the above and having excellent detergency.

[0006]

[In the formula (I), R ₁ is a linear or branched alkyl group or alkenyl group having 6 to 22 carbon atoms. m is an integer of 1 or 2, M ₁ is a hydrogen atom, an alkali metal ion, ammonium, a mono-, di- or trialkanol ammonium having an alkanol group having 2 to 3 carbon atoms, an alkyl group-substituted ammonium having 1 to 5 carbon atoms or a base. Shows a polar amino group. ]

[Chemical 2] [In the formula (II), R ₂ is a linear or branched carbon atom having 8 carbon atoms.
A to 18 alkyl or alkenyl group, R ₃ represents a hydrogen atom, a hydrocarbyl of 1 to 4 carbon atoms, 2-hydroxyethyl, 2-hydroxypropyl or a mixture thereof. X represents glucose, maltose or a mixture thereof. )

[0007]

[In the formula (I), R ₁ is a linear or branched alkyl group or alkenyl group having 6 to 22 carbon atoms. m is an integer of 1 or 2, M ₁ is a hydrogen atom, an alkali metal ion, ammonium, a mono-, di- or trialkanol ammonium having an alkanol group having 2 to 3 carbon atoms, an alkyl group-substituted ammonium having 1 to 5 carbon atoms or a base. Shows a polar amino group. ]

[Chemical 3] [In the formula (II), R ₂ is a linear or branched carbon atom having 8 carbon atoms.
A to 18 alkyl or alkenyl group, R ₃ represents a hydrogen atom, a hydrocarbyl of 1 to 4 carbon atoms, 2-hydroxyethyl, 2-hydroxypropyl or a mixture thereof. X represents glucose, maltose or a mixture thereof. )

In the N-alkylamino acid or salt thereof used in the above general formula (I) of the present invention, R ₁ is a linear or branched alkyl group or alkenyl group having 6 to 22 carbon atoms. R ₁ preferably has 10 to 16 carbon atoms. R ₁ may be saturated or unsaturated and may optionally contain a substituent such as a hydroxyl group. Preferably, R ₁ is a decyl group, a lauryl group, a myristyl group, a palmityl group, an oleyl group, an alkyl group derived from coconut fatty acid, or an alkyl group derived from tallow fatty acid. m is an integer of 1 or 2, and 2 is particularly preferable.
In addition, M ₁ is a hydrogen atom, an alkali metal ion, ammonium, or a monocyclic alkanol group having 2 to 3 carbon atoms,
Di- or trialkanol ammonium, carbon number 1
5 represents an alkyl group-substituted ammonium or a basic amino group of 5.

The N-alkyl amino acid represented by the above general formula (I) or a salt thereof is N- which is one of the compounds.
It is a known compound as can be seen from the fact that the lauryl β-alanine Cas. No. is 3546-96-1, and its production method is not particularly limited, and it can be produced by a conventionally known method. .. For example, if the alkylamine is reacted with equimolar halogenated acetic acid, the desired N-
Alkylglycine is obtained. For example, the target N-alkyl β-alanine can be obtained by adding equimolar amount of acrylic acid to alkyl amine.

Specific examples of the N-alkyl amino acid represented by the above general formula (I) include N-decyl β-alanine and its salt, N-lauryl glycine and its salt, N-lauryl β-alanine and its salt, N-myristyl β-alanine and salts thereof, N-palmityl β-alanine and salts thereof,
Examples thereof include, but are not limited to, N-cocoylglycine and salts thereof, N-cocoyl β-alanine and salts thereof, and the like. These can be used alone or in combination of two or more.

On the other hand, the detergent composition of the present invention contains the polyhydroxy fatty acid amide represented by the general formula (II) as an essential component. In the polyhydroxy fatty acid amide represented by the general formula (II) used in the present invention, R ₂ is a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms. R ₂ has 10 carbon atoms
-16 are especially desirable. R ₂ may be saturated or unsaturated. Preferably, R ₂ is a decyl group, a lauryl group, a myristyl group, a palmityl group, an alkyl group derived from coconut fatty acid, or an alkyl group derived from tallow fatty acid. R ₃ is a hydrogen atom, hydrocarbyl having 1 to 4 carbon atoms, 2-hydroxyethyl, 2-hydroxypropyl or a mixture thereof, and a methyl group is particularly preferable.
X is glucose, maltose or a mixture thereof, with glucose being particularly preferred.

The polyhydroxy fatty acid amide represented by the above general formula (II) is a known compound, and the production method thereof is not particularly limited, and can be produced by a conventionally known method. For example, by reacting N-alkylglucamine with a fatty acid ester, the desired N-methylalkylglucamide can be obtained. Specific examples of the polyhydroxy fatty acid amide represented by the general formula (II) include, but are not limited to, N-methylalkylglucamide, N-methylalkylmaltamide, and the like. These can be used alone or in combination of two or more.

Further, the detergent composition of the present invention may preferably contain an anionic surfactant in order to further enhance the detergency. The structure of the anionic surfactant is not particularly limited. Examples of preferably mixable anionic surfactants include polyoxyethylene alkyl ether sulfate, α-olefin sulfonate, α
-Sulfo fatty acid salts, alkylbenzene sulfonates, fatty acid soaps, sulfosuccinates, alkyl ether carboxylates and the like are included, but are not limited thereto. These can be used alone or in combination of two or more.

In the detergent composition of the present invention, the N-alkyl amino acid represented by the above general formula (I) and the polyhydroxy fatty acid amide represented by the above general formula (II) are blended in a blending amount and a blending ratio (weight ratio). ) Is not particularly limited, but is preferably general formula (I)/general formula (II)=1/99 to 99/
It is preferable to blend in the range of 1, and more preferably the range of general formula (I)/general formula (II)=30/70 to 70/30 is very good. General formula (I)/General formula (II)
If the compounding ratio is less than 1/99 and exceeds 99/1, the effect of the present invention cannot be achieved. And the total compounding quantity of the said General formula (I) and General formula (II) is 1-60 weight% in the whole composition, Preferably it is 1.
It is compounded in the range of 5 to 30% by weight. If the total content is less than 1% by weight, the effect of the present invention cannot be achieved, and if the total content exceeds 60% by weight, the desired effect is not only saturated, but also It is not preferable because it is not economical and causes poor storage stability. Further, it is desirable that the above anionic surfactant is contained in the entire composition in an amount of 0.1% by weight or more, and preferably 0.5 to 20% by weight.

Further, the detergent composition of the present invention may contain other known nonionic surfactants, amphoteric surfactants, and other additives which have been conventionally used, which impair the effects of the present invention. You may use it combining arbitrarily in the range which does not exist.
Preferably, the nonionic surfactant that can be mixed is, for example, polyoxyethylene alkyl ether, sorbitan fatty acid ester, polyoxyethylene acyl ester, alkyl polyglycoside, fatty acid glycoside ester, fatty acid methyl glycoside ester, amine oxide, fatty acid. Alkanol amide etc. are mentioned as an example. Furthermore, as amphoteric activators that can be preferably mixed, for example, alkyl betaine, alkyl hydroxysulfobetaine, alkylamido betaine, imidazolinium betaine and the like can be mentioned. These surfactants are
They can be blended alone or in an appropriate combination of two or more kinds.

The solvent of the detergent composition of the present invention is preferably water, and may further contain other liquid solvent such as lower alcohol and glycol. Other preferable additive components that can be added include, for example, cationic surfactants such as alkylamine hydrochloride and quaternary ammonium salt, chelating agents such as citric acid, builders such as inorganic salts, and aromatic sulfones. Ordinarily used substances such as hydrotropes such as acid salts, viscosity modifiers, colorants, antioxidants, preservatives, bactericides, antiphlogistics, medicinal ingredients and fragrances may be added.

In the detergent composition of the present invention thus constituted, two components of the N-alkyl amino acid represented by the general formula (I) and the polyhydroxy fatty acid represented by the general formula (II) are contained. For the first time, by containing amide, it has no irritation to the skin, has extremely high mildness, and has extremely excellent detergency against oil stains attached to a hydrophobic hard surface, especially for kitchen use. The resulting detergent composition is extremely useful as a detergent for hard surfaces (these points and the like will be described later in Examples and the like).

[0018]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

[Examples 1 to 5 and Comparative Examples 1 to 7] A detergent composition having a composition ratio shown in Table 1 below was prepared, and skin irritation and detergency (tappa detergency, leanut detergency) were measured by the following test methods. Power) was evaluated. The blending amount in the table is "% by weight", and the composition has a pH adjusted to 6.5. The results are shown in Table 1 below.

[Evaluation of skin irritation] Using the 1% aqueous solution (35° C.) of the cleaning composition of Examples 1 to 5 and Comparative Examples 1 to 7, evaluation was carried out by a hand test of 10 testers. That is, the immersion-drying operation is performed 15 times every 1 minute,
The degree of rough skin of the hand after 24 hours was visually judged by the following evaluation criteria. Evaluation Criteria: ◯: Almost no rough skin △: Some signs of rough skin symptoms such as dry desquamation and changes in red spots are observed on a part of the keratinous surface of the skin. X: Rough hand symptoms such as dry desquamation and red spot change are clearly observed.

[Evaluation of Detergency] (1) Evaluation of Detergency of Tappa 1 g of beef tallow was evenly applied to a 10 cm×15 cm tapper container to give a violently soiled hydrophobic surface stain. 36 g of water and 4 g of the detergent compositions of Examples 1 to 5 and Comparative Examples 1 to 7 (the detergent compositions shown in Table 1 below) were placed in a dishwashing sponge, and after kneading by hand several times, The contaminated tapper container was washed at 25° C. as it would normally be done at home. After washing, it was rinsed well with water, and the touch feeling when touching the contaminated surface of the tapper container at that time was evaluated based on the following evaluation criteria. Evaluation criteria: ◯: No matter what part of the tapper container is touched, there is a squeaky frictional sensation, and no slimyness due to residual oil is felt. Δ: There is a feeling of friction when touching the smooth surface of the tapper container, and no residual oil is observed, but sliminess remains at the edges and corners. X: Lubricity is felt in the entire tapper container, and it is clear that oil remains.

(2) Leannut Detergency 60 ml of 10 g each of soybean oil and beef tallow prescribed by the Japanese Pharmacopoeia
After dissolving in 0.1 g of chloroform, 0.1 g of oil red was added and mixed well to prepare a dirt solution. A glass plate was immersed in this solution to contaminate it, and it was air-dried at a temperature of 25° C. for 30 minutes or more to remove chloroform to prepare a contaminated piece.
(Amount of contamination 20 to 30 mg/sheet). 25 of these 6 contaminated pieces
C., 700 ml of 0.15% by weight of Examples 1 to 5 and Comparative Examples 1 to 7 were stirred and washed at a rotation speed of 20 rpm for 3 minutes, air-dried, and then weighed. The degreasing power was calculated by the following formula. The higher the value, the better the cleaning performance of leanuts.

[0023]

[Equation 1]

[0024]

[Table 1] (Discussion of Table 1) As is apparent from Table 1, the N-alkylamino acid represented by the general formula (I) or the salt thereof and the polyhydroxy group represented by the general formula (II) within the scope of the present invention. Examples 1 to 5 containing a fatty acid all have excellent mildness without skin irritation and excellent cleaning performance (tappa cleaning power) as compared with Comparative Examples 1 to 7, which are outside the scope of the present invention. , Leanut detergency). On the other hand, in Comparative Examples 1 to 7, at least one of the N-alkylamino acid salt represented by the general formula (I) and the polyhydroxy fatty acid represented by the general formula (II), which are essential components, was used. In the case of the combination that does not contain them, both the skin irritation and the cleaning performance (tappa cleaning power and leanut cleaning power) cannot be satisfied, and it can be seen that the performance of either one is inferior.

[0025]

EFFECTS OF THE INVENTION According to the present invention, a detergent composition which has no irritation to the skin, has extremely high mildness, and has extremely excellent detergency against oil stains attached to a hydrophobic hard surface. Will be provided.

Claims (1)

[Claims] 1. (a) N- represented by the following general formula (I):
An alkyl amino acid or salt thereof, and (b) the following general formula (I
A cleaning composition comprising a polyhydroxy fatty acid amide represented by I). During _{R 1 NH (CH 2) m} COOM 1 ......... (I) [Formula (I), R ₁ is an alkyl or alkenyl group of 6 to 22 carbon atoms having a linear or branched chain. m is 1
Or an integer of 2, M ₁ is a hydrogen atom, an alkali metal ion,
Ammonium, mono-, di- or trialkanol ammonium having an alkanol group having 2 to 3 carbon atoms, an alkyl group-substituted ammonium having 1 to 5 carbon atoms or a basic amino group is shown. ] [Chemical 1] [In the formula (II), R ₂ is a linear or branched carbon atom having 8 carbon atoms.
A to 18 alkyl or alkenyl group, R ₃ represents a hydrogen atom, a hydrocarbyl of 1 to 4 carbon atoms, 2-hydroxyethyl, 2-hydroxypropyl or a mixture thereof. X represents glucose, maltose or a mixture thereof. )