JPS6220596A - Liquid detergent composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid detergent composition that has excellent cleaning performance and foam stability, is mild to the skin, and has good storage stability. be.

11 In recent years, in addition to excellent cleaning power and foaming power, the performance required for kitchen detergents and shampoos is not only low toxicity but also mildness to the skin. As a detergent composition that satisfies these various performances, for example, a liquid detergent composition comprising an N-acyl amino acid surfactant and an amine oxide type surfactant such as an alkyldimethylamine oxide is disclosed in Japanese Patent Application Laid-Open No. 48-55904.
No.) is known.

However, when N-acyl amino acid surfactants such as N-acyl sarcosine salts and N-acyl glutamates are combined with alkylamine oxides, low-temperature stability and compatibility often deteriorate and turbidity occurs. In many cases, the product value as a cleaning agent was significantly impaired. Therefore, in order to improve these drawbacks, it was necessary to change the blending ratio or add hydrophilic solvents, hydrotropes, etc., and it was not possible to take advantage of the characteristics of N-acylamino acid surfactants and alkylamine oxides. .

Day (゛.

The present invention provides a combination of an N-acyl amino acid surfactant and an amine oxide surfactant that has good storage stability such as low temperature stability, excellent detergency and foaming power, and is gentle on the skin. It is an object of the present invention to provide a cleaning composition that is gentle even for people with disabilities.

The above-mentioned problems can be solved by selecting a specific amidoamine oxide as the amine oxide type surfactant and blending it with an N-acylamino acid type surfactant and an alkanolamide.

That is, the present invention relates to a liquid cleaning composition characterized by comprising the following three components (A), (B), and (C).

(A>General formula (I) RICONH(CH2)3 N→0 (■) However, in the formula, R and CO are saturated or unsaturated fatty acid residues having 10 to 20 carbon atoms, and R2 and R3 are methyl groups. , ethyl group or hydroxyethyl group) (B) General formula (II) CH3 Akebono R4CON CH2COOM s (n
) (wherein, R4C0 represents a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, and M represents at least one selected from cationic residues of alkali metals, ammonium, alkanolamines, and basic amino acids) N-acyl sarcosine salts represented by and general formula (II
I) (wherein R5Co is a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, M2 and M3 are selected from hydrogen atoms, alkali metals, ammonium, alkanolamines, or cationic residues of basic amino acids) At least one N-acyl amino acid salt selected from N-acyl glutamic acid salts represented by
to 30% by weight (C) General formula (IV) (wherein R6C○ is a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, m is an integer of 1 to 20, and n is O
1.0 to 10% by weight of alkanolamide represented by the formula (representing an integer from 20 to 20) The amidoamine oxide as the first component used in the present invention is a compound represented by the general formula (I>), in which R
, fatty acid residues that can become CO groups include lauric acid,
Examples include residues of fatty acids such as myristic acid, palmitic acid, oleic acid, stearic acid, isostearic acid, coconut oil fatty acid, castor oil fatty acid, beef tallow fatty acid, and rapeseed oil fatty acid.

Representative compounds of such amine oxides of the general formula <I) include lauramidobrobyl dimethylamine oxide, oleamidopropyl dimethylamine oxide, coco (coconut oil fatty acid acyl) amidopropyl dimethylamine oxide, etc. .

The method for producing amidoamine oxide of general formula (I) is not particularly limited, but for example, hydrogen peroxide is reacted with an amidoamine compound obtained by condensing a fatty acid such as lauric acid or its lower alkyl ester with dimethylamine propylamine. There is a way.

The second component N-acyl amino acid type surfactant used in the present invention has the general formula (II) and/or (1).
N-acyl sarcosine salt and N-acyl glutamate represented by Acyl groups include lauric acid, myristic acid, palmitic acid, oleic acid, stearic acid,
Examples include residues of fatty acids such as isostearic acid, coconut oil fatty acid, beef tallow fatty acid, castor oil fatty acid, and rapeseed oil fatty acid.

Examples of N-acyl amino acid salts include alkali metal salts such as sodium salts and potassium salts, ammonium salts, alkanolamine salts such as monoethanolamine salts and triethanolamine salts, and basic amino acid salts such as lysine salts. It will be done.

The alkanolamide used as the third component of the present invention is a compound represented by the above general formula (IV), in which R
Fatty acid residues that can become 6C0 groups include lauric acid,
Examples include residues of fatty acids such as myristic acid, palmitic acid, oleic acid, stearic acid, isostearic acid, coconut oil fatty acid, beef tallow fatty acid, castor oil fatty acid, and rapeseed oil fatty acid. In general formula (IV), m is practically preferably 1 to 10, and n is preferably 0 to 20.

The blending ratio of each component in the present invention is as described above, and if each component exceeds the range of the blending ratio, the following disadvantages occur, which is not preferable.

That is, the first component, amidoamine oxide, is 1.5
If it is less than 15% by weight, the foaming, detergency and storage stability will be poor, and if it exceeds 15% by weight, the viscosity of the detergent will increase rapidly and it will be difficult to control the viscosity.

If the blending ratio of the second component, N-acylamino acid salt, is less than 1.5% by weight, the cleaning power will be poor, and if it exceeds 30% by weight, the storage stability will be reduced.

The blending ratio of the third component, alkanolamide, is 1.0.
If it is less than 10% by weight, thickening and foaming effects cannot be expected, and if it exceeds 10% by weight, the storage stability will decrease and the viscosity of the detergent will increase rapidly, making it difficult to control the viscosity.

Unless the purpose of the present invention is impaired, other anionic surfactants, nonionic surfactants, amphoteric surfactants, pigments, fragrances, hydrotropes, etc. commonly used in cleaning compositions,
Auxiliary agents such as metal ion sequestering agents, antibacterial agents, and humectants may be added.

The storage stability of the liquid detergent composition of the present invention is improved due to the synergistic effect of the three components: amidoamine oxide, N-acyl amino acid salt, and alkanolamide, but the detailed reason is It is unknown.

Fire "L Doctor" 22j-1 Comparative Examples 1 to 7 A surfactant having the composition ratio shown in Table 1 was dissolved in distilled water,
A cleaning agent of the present invention and a cleaning agent of a comparative example were prepared by adjusting the pH to 6.0 with citric acid, and their storage stability was investigated. In addition, the numerical value of each component in a table|surface represents weight%.

The viscosity of the cleaning agent was measured using a B-type viscometer, and the following low-temperature stability test and high-temperature stability test were conducted to check storage stability.

(Low temperature stability test) The detergent was placed in a test tube and stored in a -5°C constant temperature bath for 3 days, and its appearance was observed with the naked eye.

(High-temperature stability test) The detergent was placed in a 100 cc transparent bottle and stored in a 50°C constant temperature bath for one month, and its appearance was visually observed.

(Judgment Criteria) Low-temperature stability and high-temperature stability were evaluated according to the following criteria.

O: Transparent liquid △: Opaque liquid ×: Cloudy or separated liquid From the results in Table 1, the liquid cleaning composition of the present invention has storage stability. In contrast, the detergents in the comparative examples had poor storage stability or difficulty in controlling the viscosity (either extremely low or too high, resulting in a gel-like state). it is obvious.

Examples 6 to 10, Comparative Examples 8 to 12 Cleaning agents were prepared according to Example 1 with the compositions shown in Table 2,
Their viscosity and storage stability were investigated. In addition, the numerical value of each component in a table|surface represents weight%.

The viscosity and storage stability of the detergent were measured according to Example 1.

From the results in Table 2 in the margin below, it can be seen that the liquid cleaning composition of the present invention has excellent storage stability and is easy to control viscosity, whereas the cleaning agent of the comparative example has poor storage stability or viscosity control. It is clear that it is difficult (low or too high at the i-end, resulting in a gel-like state).

Example 11 (Shampoo) Lauramidopropyl dimethyl % Amine oxide 5.0 N-cocoylsarcosine Triethanolamine salt 8,0 N-
Taloylglutamate monosodium salt
3.0・Lauric acid monoethanolamide-polyethoxylate (E○ average number of added moles 10) 3.0・Citric acid Amount to make pH 7.0・
Balance 100.0 Example 12 (Shampoo) ・Palmitamidobropyrdiethyl % Amine oxide 2.0 ・N-oleoylsarcosine lysine salt 4.5 ・Coconut oil fatty acid acid jetanolamide 3.0 ・Lauryl alcohol sulfuric acid Ester - Sodium 3.0 Citric acid Amount to make pH 6.0
Burns 100.0 Example 13 (Shampoo) Cocoamidopropyl diethylamine-% oxide
5.0 N-lauroylglutamic acid monotriethanolamine salt 10.0 Lauric acid jetanolamide 3.0 Sodium α-olefin sulfonate 3.0 Citric acid
Amount to adjust pH to 7.0・edetate disodium salt 0.1・
Balance: 100.0 It was found that the shampoos obtained in Examples 11 to 13 had good storage stability, excellent lathering and cleansing properties, and little irritation to the eyes.

Example 14 (Dish detergent) - Beef tallow amidopropyl dimethyl - % Amine oxide 2.0 - Cocoamidopropyl bis(2-hydroxyethyl) amine oxide 2.0 - N-oleylglutamic acid disodium salt 5.5 - Poly Oxyethylene lauryl ether-sodium sulfate (EO average number of moles added 5) 8.5 Coconut oil fatty acid monoethanolamide polyethoxylate (EO average number of moles added 5) 2.0 Ethanol 3.0
65.0100.0 The above kitchen detergent was found to exhibit excellent low-temperature stability and to have good foaming and detergency as a kitchen detergent.

Example 15 (Hand cleaner) %・α-
Sodium olefin sulfonate 8.0 Cocoamidopropyl dimethylamine oxide
2.0・N-cocoylsarcosine sodium salt 5.0・Hardened beef tallow fatty acid monoethanolamide polyethoxylate (EO average added mole number 10) 2.0・Citric acid Amount to adjust pH to 6.5・
Burns 100.0 The above hand cleaner is a viscous transparent liquid, exhibits excellent low temperature stability, and has foam as a hand cleaner.
It was found to have excellent cleaning power and less irritation to the skin.

1iyu11 The liquid cleaning composition of the present invention has the following excellent characteristics.

(1) Good storage stability at low and high temperatures.

2) It has excellent cleaning and foaming power, and is gentle on the skin.

Claims (1)

[Scope of Claims] 1. A liquid detergent composition comprising the following three components (A), (B) and (C). (A) General formula (I) ▲Mathematical formulas, chemical formulas, tables, etc.▼(I) (However, in the formula, R_1CO is a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, and R_2 and R_3 are methyl groups. , ethyl group or hydroxyethyl group) 1.5 to 15% by weight of amidoamine oxide represented by (B) General formula (II) ▲ Numerical formula, chemical formula, table, etc. ▼ (II) N-acylsarcosine salt represented by a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, M representing at least one selected from cationic residues of alkali metals, ammonium, alkanolamines, or basic amino acids. and general formula (III
) ▲Mathematical formulas, chemical formulas, tables, etc.▼(III) (In the formula, R_5CO is a saturated or unsaturated fatty acid residue with 10 to 20 carbon atoms, M_2 and M_3 are hydrogen atoms, alkali metals, ammonium, alkanolamines 1.5 to 30% by weight of at least one N-acyl amino acid salt selected from N-acyl glutamic acid salts represented by (C) General formula (IV) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (IV) (In the formula, R_6CO is a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, m is an integer from 1 to 20, and n is 0 to 20. 2. The composition according to claim 1, wherein R_2 and R_3 of the general formula (I) are each a methyl group. 3. The composition according to claim 1, wherein M_1 in general formula (II) is sodium. 4. The composition according to claim 1, wherein M_2 and/or M_3 in general formula (III) is sodium.