JPH05156291A - Detergent composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition comprising a salt of a secondary amide type N-acylamino acid and a specific branched fatty acid ester, having low irritation to skin and hair, excellent in foamability and foam retaining property. CONSTITUTION:The objective composition comprising (A) a salt of a secondary amide type N-acylamino acid of the formula (R<1>CO is 10-16C straight-chain acyl: n is 1 or 2; M<1> is sodium, potassium or alkanolammonium when n is 1 and M<1> is potassium or alkanolammonium when n is 20, (B) a branched fatty acid ester selected from (i) an ester between an adduct of a polyhydric alcohol with 40-400 mols ethylene oxide and 8-36C branched fatty acid, (ii) an ester between a polyethylene glycol having 2,000-20,000 average molecular weight and 8-36C branched fatty acid and (iii) an adduct of an ester between a polyhydric alcohol and 8-36C branched fatty acid with 40-400 mols ethylene oxide and (C) a salt of a higher fatty acid.

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 particularly, to a skin and hair having a low irritation, foaming property,
The present invention relates to a detergent composition which is excellent in foam quality and foam durability and has a good feeling in use.

[0002]

2. Description of the Related Art Body cleansing compositions generally contain anionic surfactants as main components, and for skin cleansing agents,
Soap, i.e., higher fatty acid salt, is also used for hair washing,
Alkyl sulfates and alkyl sulfonates are mainly used. Soaps used for skin cleansing have the drawback of producing squeaky and taut during rinsing, and alkylsulfates and alkylsulfonates used for hair washing have excellent detergency but are problematic in terms of irritation. was there.
Therefore, it has been investigated to use a specific N-acylated amino acid type surfactant as a main base of a detergent as a surfactant having excellent feeling of use and low irritation. In terms of foam quality and foam sustainability, it was not sufficiently satisfactory at a practical level.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a detergent composition which is excellent in foaming property, foam quality and foam lasting property, has low irritation and has a good feeling in use. ..

[0004]

Under the circumstances, as a result of intensive investigations by the present inventors, it has been found that a secondary amide type N-acyl amino acid salt having a specific structure and a branched fatty acid ester are combined and blended to form a mixture. It has been found that a detergent composition having excellent foamability, foam quality, and foam persistence, having no irritation to skin, hair, etc., and having good foam breakage and slippage after washing, and having a good feeling in use, can be obtained. Completed the invention.

That is, the present invention provides the following components (A) and (B) (A) a secondary amide type N- represented by the following general formula (1).
Acyl amino acid salt R ¹ CONH (CH ₂ ) _n COOM ¹ (1) (In the formula, R ¹ CO represents a linear acyl group having 10 to 16 carbon atoms, n represents a number of 1 or 2, and M ¹ represents When n is 1, it represents sodium, potassium or alkanolammonium, and when n is 2, it represents potassium or alkanolammonium.) (B) From the following (B-1), (B-2) and (B-3) Branched fatty acid ester (B-1) polyhydric alcohol ethylene oxide 40-
Ester of 400 mol Addition Product and Branched Fatty Acid with Total Carbon Number of 8 to 36 (B-2) Ester of Polyethylene Glycol with Average Molecular Weight of 2,000 to 20,000 and Branched Fatty Acid with Total Carbon Number of 8 to 36 (B- 3) Ethylene oxide 40 to 400 which is an ester of a polyhydric alcohol and a branched fatty acid having a total carbon number of 8 to 36
A cleaning composition comprising a molar adduct is provided.

The secondary amide type N-acyl amino acid salt of the component (A) used in the present invention has the property of reacting with calcium contained in tap water or the like to form a plate crystal with high lubricity. It exhibits the effect of imparting a good feeling of use such as slippage after washing to a detergent composition containing this. Here, the lubricity of the plate-like crystals produced by the reaction of the secondary amide type N-acyl amino acid salt and calcium is, for example, the plate on which dried pork skin (Aloask, manufactured by Antibody Chemical Industries) is regenerated with physiological saline. It is determined by measuring the coefficient of static friction of crystal-like crystals, and those having a coefficient lower than that of the blank from the time of containing water to the time of drying are evaluated as good.

In the above-mentioned secondary amide type N-acyl amino acid salt, in the general formula (1), the linear acyl group represented by R ¹ CO has 10 to 16 carbon atoms, particularly 12 to 14 carbon atoms.
Is preferable, and specifically, a caprinoyl group, a lauroyl group, or a myristoyl group is preferable. When the number of carbon atoms exceeds 16, it is not preferable because the lubricity of the plate-like crystals to be formed is lowered, and when the number of carbon atoms is less than 10, foaming is lowered, which is not preferable. In addition, it is very important that the secondary amide type N-acyl amino acid salt has a secondary amide type structure in which the N-acyl group is composed of the linear acyl. That is, when the acyl group constituting the N-acyl group is branched or the amide structure is a tertiary amide type, the production of plate crystals is suppressed, and the physical properties of the produced crystals are poor in lubricity. However, it is difficult to obtain a desirable feeling because it is sticky. Further, in the general formula (1), the one in which n is 2 and M ¹ is a sodium salt has a high Kraft point and is inferior in water solubility, so that it is not preferable when used in a liquid detergent.

The component (B) used in the present invention (B-
1) Ester of ethylene oxide adduct of polyhydric alcohol and branched fatty acid, (B-2) Ester of polyethylene glycol and branched fatty acid, and (B-3) Ethylene oxide adduct of ester of polyhydric alcohol and branched fatty acid Is manufactured by a known manufacturing method, and the manufacturing method and conditions are not limited. As a production method, for example, a method of adding ethylene oxide to a polyhydric alcohol branched fatty acid ester obtained by reacting a polyhydric alcohol and a branched fatty acid in the presence of an alkali catalyst and an acid catalyst, in the presence of an alkali catalyst A method of adding ethylene oxide to a polyhydric alcohol in the presence of an alkali catalyst, and further esterifying with a branched fatty acid in the presence of an alkali catalyst and an acid catalyst; polyethylene glycol and a branched fatty acid of an alkali catalyst and an acid catalyst And a method of adding ethylene oxide to a branched fatty acid (branched fatty acid ester of polyethylene glycol) and the like.

The number of moles of ethylene oxide added is 40 to 400 moles per 1 mole of the starting polyhydric alcohol branched fatty acid ester or the starting polyhydric alcohol.
More preferably, it is 80 to 300 mol.

As the branched fatty acid, a branched fatty acid having a total carbon number of 8 to 36 is used, and more preferably, an α-branched fatty acid represented by the general formula (2) is used.

[0011]

[Chemical 1]

(In the formula, R ² represents a linear or branched alkyl or alkenyl group having 4 to 18 carbon atoms, and R ³ represents 2 carbon atoms.
~ 16 represents a linear or branched alkyl or alkenyl group)

Specifically, for example, 2-ethylhexanoic acid, 2-ethylisohexanoic acid, 2-propylheptanoic acid, 2-propylisoheptanoic acid, 2-butyloctanoic acid, 2-isobutylisooctanoic acid, 2-pentylnonane. Acid, 2-isopentylnonanoic acid, 2-hexyldecanoic acid, 2-hexylisodecanoic acid, 2-butyldodecanoic acid, 2-isobutyldodecanoic acid, 2-heptylundecanoic acid, 2-isoheptylundecanoic acid, 2-isoheptyl Isoundecanoic acid, 2-dodecylhexanoic acid, 2-isododecylhexanoic acid, 2-octyldodecanoic acid, 2-
Isooctyldodecanoic acid, 2-octylisododecanoic acid, 2-nonyltridecanoic acid, 2-isononylisotridecanoic acid, 2-decyldodecanoic acid, 2-isodecyldodecanoic acid, 2-decylisododecanoic acid, 2-decyl Tetradecanoic acid, 2-octylhexadecanoic acid, 2-isooctylhexadecanoic acid, 2-undecylpentadecanoic acid,
2-isoundecyl pentadecanoic acid, 2-dodecyl heptadecanoic acid, 2-isododecyl isoheptadecanoic acid, 2
-Decyl octadecanoic acid, 2-decyl isooctadecanoic acid, 2-tridecyl heptadecanoic acid, 2-isotridecyl isoheptadecanoic acid, 2-tetradecyl octadecanoic acid, 2-isotetradecyl octadecanoic acid, 2-hexadecyl hexadecane Acid, 2-hexadecyltetradecanoic acid, 2-hexadecylisohexadecanoic acid, 2-isohexadecylisohexadecanoic acid, 2-pentadecylnonadecanoic acid, 2-isopentadecylisononadecanoic acid, 2
-Tetradecylbehenic acid, 2-isotetradecylbehenic acid, 2-tetradecylisobehenic acid, 2-isotetradecylisobehenic acid and the like.

As the polyhydric alcohol, trihydric or higher polyhydric alcohols are preferably used. For example, glycerin, trimethylolpropane, pentaerythritol, arabinitol, xylitol, sorbitol, mannitol, galactitol, heptitol, inositol, sorbitan, Sorbide, glucose, galactose, mannose, maltose, fructose, sucrose,
Lactose, maltitol, lactitol, methyl glucoside, methyl galactoside, methyl mannoside, methyl maltoside and the like, but for reasons such as thermal stability, economic efficiency and thickening effect, glycerin, trimethylolpropane, pentaerythritol, sorbitol, Mannitol, sorbitan, sorbide, inositol, methyl glucoside and the like are preferably used.

As the polyethylene glycol, those having a molecular weight of 2,000 to 20,000 are used, and those having a molecular weight of 3,500 to 15,000 are more preferable.

The branched fatty acid is 1 to 8 relative to the raw material polyoxyethylene polyhydric alcohol ether and polyhydric alcohol.
Used in double mole. The esterification degree of the branched fatty acid ester of the component (B) of the present invention is 1 to 8, preferably 1.0 to
It is 5.0. 1 or 2 branched fatty acid esters
It is possible to mix and use one or more species in any proportion.

The content of the component (B) in the detergent composition of the present invention varies depending on the dosage form, but is preferably 0.1 to 10% by weight, particularly 1 to 5% by weight.

Component (A) in the detergent composition of the present invention
The mixing ratio of the component (B) and the component (B) is A / B = 100/1 by weight.
˜2 / 1, especially 50/1 to 5/1 are preferred. Further, the total amount of the components (A) and (B) mixed varies depending on the dosage form of the detergent composition, but is 5 to 50% by weight in the composition for a liquid detergent and 15 to 70 for a paste detergent. %, And in the case of a solid detergent, it is preferably 40 to 95% by weight.

By adding a higher fatty acid salt (C) to the detergent composition of the present invention, a foaming property is further improved and a detergent having a good feel of foam can be obtained. Here, examples of the higher fatty acid salt (C) include basic salts of fatty acids having 8 to 22 carbon atoms. Specifically, lauric acid,
In addition to single fatty acids such as myristic acid, palmitic acid, isostearic acid, and oleic acid, there can be mentioned basic salts of mixed fatty acids such as coconut oil fatty acid and tallow fatty acid. Here, as the salt, inorganic basic salts such as sodium and potassium, ammonium salts, monoethanolamine salts, diethanolamine salts, triethanolamine salts (hereinafter, TE
Abbreviated as A), 2-amino-2-methylpropanol, 2
Examples include alkanolamine salts such as -amino-2-methylpropanediol and basic amino acids such as lysine and arginine. These higher fatty acid salts (C) do not necessarily have to be blended as fatty acid salts, and fatty acids and bases may be blended independently to form fatty acid salts in the formulation system. These higher fatty acid salts may be used alone or in combination of two or more. The blending amount of the higher fatty acid salt (C) in the detergent composition of the present invention depends on the blending amounts of the components (A) and (B), and the weight ratio is (C) /
(A) + (B) = 1/20 to 1/2, especially 1/10 to 1
/ 3 is preferred.

The detergent composition of the present invention includes other surfactants such as alkyl sulfates, alkyl sulfonates, polyoxyethylene alkyl sulfates, alkylbenzene sulfonates, N-acyl sarcosine salts and N-acyl. Anionic surfactant such as -N-methyl taurine salt, alpha olefin sulfonate, alkyl ether acetate, polyoxyethylene alkyl ether acetate, polyoxyethylene alkyl ether, sugar ester type, sugar ether type, sugar amide type It is also possible to optionally use nonionic surfactants such as the above and amphoteric surfactants such as the imidazoline type and the betaine type within a range that does not impair the effects of the present invention.

Further, as other additives, components usually used in detergents can be optionally used in combination within a range not impairing the effects of the present invention. For example, propylene glycol, sorbitol, humectants such as glycerin, carboxyvinyl polymer, methyl cellulose, ethanol,
Viscosity modifiers such as polyoxyethylene glycol distearate, pearling agents, fragrances, dyes, ultraviolet absorbers, antioxidants, bactericides, anti-inflammatory agents and preservatives can be added.

The detergent composition of the present invention is manufactured by a conventional method and can be made into a paste, gel, liquid, solid, etc. dosage form, and is suitable as a detergent for the body such as skin or hair. In particular, it is preferably used for cleaning the skin.

[0023]

EXAMPLES Next, the present invention will be described in detail based on examples. However, the present invention is not limited to the examples shown below.

Example 1 A detergent composition having the composition shown in Tables 1 and 2 below was prepared, and the amount of foam and the persistence of foam (foam retention) of these detergent compositions were measured by the following method. Measured by
The feeling of use was evaluated based on the following methods and criteria. The results are shown in Tables 1 and 2 below. In addition, No. The cleaning compositions of 9 and 10 are comparative products.

(Measurement of foaming amount and foam retention) A 20-fold diluted aqueous solution was prepared for each detergent composition, and this solution 1
Pour 00 ml (liquid temperature 40 ° C) into a graduated cylinder. Next, a stirring blade was placed in the above solution, and the volume (ml) of the foam generated 30 seconds after the start of stirring was measured.
The amount of foaming. Volume of foam after left for 1 minute (ml)
Was measured, and it was considered as the foam retention. The rotation speed of the stirring blade is 1
It was 000 rpm and was reversed every 5 seconds.・ Evaluation criteria Foaming amount, foam retention ◎; Foam volume 250 ml or more ○; Foam volume 200 ml or more and less than 250 ml △; Foam volume less than 200 ml (Evaluation of feeling of use) For each cleaning composition, 10 parts for each gender
A famous panelist was made to wash his body and sensory evaluation was performed. For evaluation, an average value was calculated according to the following criteria, and when the average value was 4.5 or more, it was very good (⊚), 3.5 to 4.
The case of 4 was judged to be good (◯), the case of 2.5 to 3.4 was normal (Δ), and the case of 2.4 or less was judged to be bad (x). (1) Defoaming during rinsing 5; Good defoaming 4; Good defoaming 3; Normal 2; Bad defoaming 1; Bad defoaming (2) Sliding during rinsing, (3) After rinsing And (4) slippage after drying 5; good slippage 4; good slippage 3; normal 2; poor slippage 1; bad slippage

[0026]

[Table 1]

[0027]

[Table 2]

Example 2 (Blend composition) (% by weight) (1) Lauroyl-β-alanine TEA 27 (2) POE (160) sorbitan stearate (average degree of esterification 3.0) 3 (3) Lauric acid TEA 4 (4) TEA 2 myristic acid (5) Perfume 0.5 (6) Dibutylhydroxytoluene 0.2 (7) Ethanol 3 (8) Purified water balance According to the above composition, the above (1) to ( 4) The component is dissolved, and after cooling, the components (5) to (7) are added,
A liquid detergent composition was prepared. When the body was washed with the obtained detergent composition, it was found to have good foaming, foam retention and foam breakage, and good slipperiness from the time of rinsing to the time of drying, resulting in excellent usability.

Example 3 (Compounding composition) (% by weight) (1) Lauroyl-β-alanine K 20 (2) POE (250) pentaerythritol 2-heptyl undecanoic acid ester (average degree of esterification 4.0) 2 ( 3) Lauric acid K 2 (4) Myristic acid K 2 (5) Perfume 0.5 (6) Dibutylhydroxytoluene 0.3 (7) Ethanol 4 (8) Purified water balance The components (1) to (4) are dissolved and, after cooling, the components (5) to (7) are added,
A liquid detergent composition was prepared. When the body was washed with the obtained detergent composition, it was found to have good foaming, foam retention and foam breakage, and good slipperiness from the time of rinsing to the time of drying, resulting in excellent usability.

[0030]

The cleaning composition of the present invention has a foaming property, a foam quality,
It is excellent in the durability of the foam and has low irritation to the skin, hair, etc., and also has good foam breakage and slippage after washing, and has a good feeling in use, and is particularly suitable for skin washing.

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Claims (2)

[Claims] 1. The following components (A) and (B) (A) A secondary amide type N- represented by the following general formula (1):
Acyl amino acid salt R ¹ CONH (CH ₂ ) _n COOM ¹ (1) (In the formula, R ¹ CO represents a linear acyl group having 10 to 16 carbon atoms, n represents a number of 1 or 2, and M ¹ represents When n is 1, it represents sodium, potassium or alkanolammonium, and when n is 2, it represents potassium or alkanolammonium.) (B) From the following (B-1), (B-2) and (B-3) Branched fatty acid ester (B-1) polyhydric alcohol ethylene oxide 40-
Ester of 400 mol Addition Product and Branched Fatty Acid with Total Carbon Number of 8 to 36 (B-2) Ester of Polyethylene Glycol with Average Molecular Weight of 2,000 to 20,000 and Branched Fatty Acid with Total Carbon Number of 8 to 36 (B- 3) Ethylene oxide 40 to 400 which is an ester of a polyhydric alcohol and a branched fatty acid having a total carbon number of 8 to 36
A cleaning composition comprising a molar adduct. 2. The cleaning composition according to claim 1, further comprising (C) a higher fatty acid salt.