JP2000119698A - Foam quality-improving agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a foam quality-improving agent which gives excellent foam quality and foamability and comfortable feeling in use when used in combination with a fatty acid salt by neutralizing a fatty acid with a ditaurine salt, a tritaurine salt or an N-methylditaurine salt. SOLUTION: This foam quality-improving agent comprises a salt of a compound represented by the formula: R-N(C2H4SO3M1)2 with a fatty acid. In the formula, R is H, methyl or -C2H4SO3M2; and M1 and M2 are each alkali metal, alkaline earth metal, ammonium or organic ammonium. As the fatty acid for the foam quality-improving agent are preferable 8-22C fatty acids and there can be exemplified lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, coconut oil fatty acid, palm kernel oil fatty acid, beef tallow fatty acid and the like. The foam quality-improving agent exhibits satisfactory effects in a small amount and its amount to be used is preferably 0.005-5 wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a foam quality improving agent,
In particular, the present invention relates to a foam quality improver that can provide excellent foam quality, foamability, and favorable feeling of use when combined with a fatty acid salt.

[0002]

2. Description of the Related Art Various surfactants are used in detergent compositions according to the purpose. However, in the case of body cleaners, rich foaming and favorable feeling of use suitable for Japanese are used as the main components. Thus, fatty acid salts have been mainly used. However, fatty acid salts alone have good foaming properties, but the foam quality is somewhat coarse and lacks elasticity, and the tactile feeling after washing is strong, so attempts have been made to improve this by combining other components. .

As an example of such a detergent composition, a composition comprising a combination of a fatty acid salt, an amide ether sulfate type anion activator and an alkyl phosphate type anion activator (JP-A-5-201852), A composition combining a lower amide type N-acyl amino acid salt (JP-A-5-156284), a composition combining a fatty acid salt and an amidobetaine type amphoteric activator (JP-A-53-102912), lauric acid potassium,
Composition comprising a combination of potassium myristate, potassium oleate and polyoxyethylene castor oil
No.-300), a combination of a fatty acid salt and an o-substituted malate (JP-A-59-15500), or a combination of a fatty acid salt and a cationized hydroxyethyl cellulose. An example in which an organic compound such as a composition (JP-A-58-167699) is combined is disclosed.

[0004]

Many detergent compositions comprising a combination of a fatty acid salt and various surfactants have the effect of making the foam quality somewhat creamy, but the effect is not sufficient, and furthermore, the fatty acid is not sufficiently effective. In some cases, the foaming property of the salt is rather suppressed, and there is a drawback that a feeling of wetness is given after washing and the usability is remarkably deteriorated. In addition, a satisfactory foam quality was not obtained in combination with an organic compound, and the feeling of tightness after washing remained as it was and did not solve the drawbacks of fatty acid salts. An object of the present invention is to provide a foam quality improving agent which can obtain excellent foam quality, foamability, and favorable feeling of use when combined with a fatty acid salt.

[0005]

In order to solve the above-mentioned problems, studies have been conducted to find a compound obtained by neutralizing a fatty acid with a ditaurine salt, a tritaurine salt or an N-methylditaurine salt. By combining with the above, the above-mentioned drawbacks have been solved, and a foam quality improving agent having an unprecedented characteristic has been obtained. That is, the present invention is a foam quality improving agent comprising a salt of the compound represented by the formula (1) and a fatty acid. RN (C ₂ H ₄ SO ₃ M ¹ ) ₂ (1) (R is a hydrogen atom, a methyl group and —C ₂ H ₄ SO ₃ M ² , M
¹ and M ² represent alkali metal salts, alkaline earth metal salts, ammonium and organic ammonium. )

[0006]

R of the compound represented by the formula (1) of the embodiment of the present invention is a hydrogen atom, a methyl group and ^{_{-C 2 H 4 SO 3 M 2}} . M ¹ and M ² of the compound represented by the formula (1) of the present invention are an alkali metal, an alkaline earth metal, ammonium and organic ammonium, such as sodium, potassium, １ ／ calcium, マ グ ネ シ ウ ム magnesium and ammonium , Monoethanolammonium, diethanolammonium, triethanolammonium and the like, and preferably sodium and potassium.

The fatty acid of the foam quality improving agent of the present invention is preferably a fatty acid having 8 to 22 carbon atoms, for example, lauric acid,
Myristic acid, palmitic acid, stearic acid, oleic acid, coconut oil fatty acid, palm kernel oil fatty acid, tallow fatty acid and the like. If the number of carbon atoms is 7 or less, there is a tendency that preferable foaming properties and foam quality cannot be obtained. When the number is 23 or more, the foaming property tends to be poor, and a favorable feeling in use cannot be obtained.

The compound represented by the formula (1) can be obtained, for example, by the following method. First, to obtain a Jitaurin salt (Formula (1 R is a hydrogen atom)) and tri taurate (R is -C ^₂ H ₄ SO ₃ M ₂ in the formula (1)), taurine salt solution and isethionate solution Was charged into an autoclave so that the molar ratio became taurine salt / isethionate = 1/5, and 200 to 250 under a pressure of 20 kg / cm ^2.
After 2 to 3 hours of reaction at <RTIgt; The obtained reaction product is crystallized with a mixed solvent of dimethylformamide / water = 2/1 to obtain a ditaurine salt, and tritium is formed by crystallization with a mixed solvent of dimethylformamide / water = 4/1. A taurine salt is obtained. Further, in order to obtain N-methylditaurine salt (R in the formula (1) is a methyl group), a methylamine aqueous solution and an isethionate aqueous solution are mixed such that the molar ratio is methylamine / isethionate = 3/1. Charged in an autoclave, 200-250 under pressure of 20 kg / cm ²
After reacting at a temperature of 2 to 3 hours, the mixture is cooled, excess methylamine is recovered by distillation, and the residue is concentrated and evaporated to dryness. The reaction product is obtained by crystallization from a mixed solvent of dimethylformamide and water (weight ratio of dimethylformamide / water = 2/1).

The foam quality improving agent of the present invention can be obtained by neutralizing a fatty acid with a compound represented by the formula (1) in the same manner as a normal fatty acid salt. Further, the foam quality improver of the present invention can exert a satisfactory effect with a small amount of use, and the amount of use is preferably from 0.005% by weight to 5% by weight, and more preferably 5% by weight or less. The use of higher amounts does not increase the effect.

[0010]

EFFECTS OF THE INVENTION The foam quality improving agent of the present invention can provide excellent foam quality, foaming properties and favorable feeling of use by being combined with a fatty acid salt and the like, so that a body shampoo composition, a hair shampoo composition and a hand It can be used for soap compositions, facial cleansing compositions, dishwashing detergent compositions, and the like.

[0011]

EXAMPLES The present invention will be specifically described with reference to examples. Test methods and evaluation methods performed in the examples will be described below. (1) Foam quality The foam quality when the body was washed with 5 g of the detergent composition was evaluated with 10 men and women as panelists. 2 points when the foam felt fine and elastic, 1 when the foam felt slightly coarse
If the point or bubble felt coarse and lacked elasticity, the score was set to 0 and 2
From the total score of 0 persons, the following three grades were evaluated. Good foam quality. (Total point 30 points or more) The foam quality is somewhat poor. (Total score 20 or more and less than 30) The foam quality is poor. (Less than 20 points)

(2) Foaming properties Ten males and females were panelists, and the foaming properties when the body was washed with 5 g of the detergent composition were evaluated. The evaluation was performed on the following three scales based on a total score of 20 persons, with 2 points when foaming was felt good, 1 point when foaming was slightly unsatisfactory, and 0 point when foaming was bad. Good foaming. (30 points or more in total) Foaming is somewhat bad. (Total score 20 or more and less than 30) Foaming is poor. (Less than 20 points)

(3) Sensation of slimming during washing Ten men and women were panelists, and the slimming sensation when the body was washed with 5 g of the detergent composition was evaluated. 2 points if you do not feel slimy, 1 point if you feel a little slimy
Points and the slimy feeling were persistent and felt that rinsing took a long time, and the following three levels were evaluated based on the total score of 20 persons as 0 point. There is no slimy feeling. (30 points or more in total) There is a slight slimy feeling. (20 points or more and less than 30 points) The slimy feeling is persistent. (Less than 20 points)

(4) Skin Tightness after Washing Ten male and female persons were panelists, and the skin tightness after washing the body with 5 g of the detergent composition was evaluated. 2 points if you feel that your skin is not firm at all, 1 point if you feel slightly tight, and 0 if you feel very tight
From the total score of 0 persons, the following three grades were evaluated. I don't feel tight. (30 points or more in total) I feel a little tight. (20 points or more and less than 30 points). Very tight. (Less than 20 points)

(5) Refreshing feeling after washing Ten men and women were panelists, and the refreshing feeling after washing the body with 5 g of the detergent composition was evaluated. The following three scales were given based on a total score of 20 persons, with 2 points for feeling very refreshing, 1 point for feeling not too refreshing, and 0 point for feeling not refreshing at all. A sufficient refreshing feeling is obtained. (Total score of 30 points or more) A refreshing feeling cannot be obtained much. (Total score 20 points or more 3
(Less than 0 points). No refreshing feeling is obtained. (Less than 20 points)

Examples 1 to 10 and Comparative Examples 1 to 9 Samples having the composition shown in Tables 1 and 2 were prepared and their performance was evaluated. The results are shown in Tables 1 and 2. The unit in the table indicates% by weight. Compound 1 in Table 1 and Table 2,
2, 3 and 4 are the following compounds. Compound 1: CH ₃ —N (C ₂ H ₄ SO ₃ Na) ₂ Compound 2: CH ₃ —N (C ₂ H ₄ SO ₃ K) ₂ Compound 3: H—N (C ₂ H ₄ SO ₃ Na) ₂ Compound 4: N (C ₂ H ₄ SO ₃ Na) ₃

[0017]

[Table 1]

[0018]

[Table 2]

From Table 1, it can be seen that the detergent compositions of Examples 1 to 10 of the present invention containing a foam quality improving agent comprising a salt of a compound represented by the formula (1) and a fatty acid of the present invention have the following properties: Foaming,
It is a good detergent composition having excellent usability during and after washing.

The detergent composition of Comparative Example 1 did not contain the foam quality improving agent of the present invention, but added potassium laurate to sodium polyoxyethylene (4 mol) coconut fatty acid monoethanolamide sulfate and sodium lauryl phosphate. Therefore, favorable foam quality cannot be obtained, the foaming property is low, the slimy feeling during washing is strong, and the refreshing feeling after washing cannot be obtained.
The cleaning composition of Comparative Example 2 did not contain the foam quality improving agent of the present invention, and potassium laurate and potassium myristate were blended with sodium lauroylalanine. Low, slimy feeling during washing,
The feeling of firmness of the skin after washing is strong, and the feeling of freshness after washing cannot be obtained. Since the detergent composition of Comparative Example 3 did not contain the foam quality improver of the present invention and blended coconut oil fatty acid triethanolamine with amidopropyl betaine laurate, favorable foam quality was not obtained, and foaming was performed. Low cleaning properties, strong slimy feeling during washing, and no refreshing feeling after washing. Since the detergent composition of Comparative Example 4 does not contain the foam quality improving agent of the present invention and contains potassium laurate, potassium myristate, and potassium oleate with disodium O-lauryl malate, the preferable foam quality is obtained. , The foaming property is low, the slimy feeling during washing and the firmness of the skin after washing are strong, and the fresh feeling after washing cannot be obtained.

The cleaning composition of Comparative Example 5 does not contain the foam quality improving agent of the present invention, and contains potassium laurate, potassium myristate, potassium oleate and polyoxyethylene (3
(Mol) Because castor oil is blended, favorable foam quality cannot be obtained, foaming property is low, slimy feeling at the time of washing, firmness of the skin after washing is strong, and refreshing feeling after washing cannot be obtained. . The cleaning composition of Comparative Example 6 did not contain the foam quality improving agent of the present invention, and potassium laurate, potassium myristate,
Hydroxyethylcellulose dimethyldiallylammonium chloride is added to potassium oleate, so good foam quality cannot be obtained, foaming properties are low, slimy feeling at the time of washing, firm feeling of the skin after washing, strong after washing, I can't get a refreshing feeling. Since the detergent composition of Comparative Example 7 does not contain the foam quality improving agent of the present invention and contains only the salt of lauric acid and sodium N-methyltaurine, a favorable foam quality cannot be obtained. Since the detergent composition of Comparative Example 8 does not contain the foam quality improving agent of the present invention and contains only the salt of lauric acid and sodium taurine, a favorable foam quality cannot be obtained. Since the detergent composition of Comparative Example 9 does not contain the fatty acid and the foam quality improving agent of the present invention, but contains only potassium laurate, potassium myristate and potassium oleate, a preferable foam quality cannot be obtained. The skin feels strong after washing.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) C11D 9:02)

Claims (1)

[Claims] 1. A foam quality improving agent comprising a salt of a compound represented by the formula (1) and a fatty acid. RN (C ₂ H ₄ SO ₃ M ¹ ) ₂ (1) (R is a hydrogen atom, a methyl group and —C ₂ H ₄ SO ₃ M ² , M
¹ and M ² represent alkali metal salts, alkaline earth metal salts, ammonium and organic ammonium. )