JPS61283695A - 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 cleaning composition that has excellent cleaning performance and foam stability, is mild to the skin, and has good storage stability. .

To 1L 11 Traditionally, as a base for cleaning products such as kitchen detergent and shampoo,
Anionic surfactants such as alkylbenzene sulfonates, alkyl sulfates, or alkyl ether sulfates have been widely used. Although these anionic surfactants have excellent cleansing and foaming properties, they may be harmful to the skin. Because of its irritating properties and low biodegradability, there was a risk of contaminating the environment.

Therefore, in recent years, there has been a demand for surfactants that have mild effects on the skin and are highly biodegradable. Active agents have started to attract attention. In particular, among amine oxide type surfactants, alkyl amine oxides such as alkyldimethylamine oxide have excellent detergency and foaming power, and are less likely to cause skin irritation. 1982-122898, Japanese Patent Publication No. 1973
9-1597, JP-A-59-78297) and solid detergents (JP-A-57-74393).

However, when alkylamine oxides are combined with other surfactants, low-temperature stability and compatibility often deteriorate, resulting in turbidity, which often impairs commercial value as a cleaning agent.

Therefore, in order to improve these drawbacks, it was necessary to change the blending ratio or add a hydrophilic solvent, hydrotrope, etc., and the properties of alkylamine oxide could not be utilized.

Furthermore, even if a combination of N-acyl-N-methyl-β-alanine salt, which is a type of amino acid surfactant, and an alkylamine oxide, or an alkanolamide with high viscosity and foaming effects are added, low temperature It has drawbacks such as poor stability, has low commercial value as a cleaning agent, and it has been difficult to take advantage of the excellent properties of both.

Day　゛　　　.

The present invention provides a combination of an amine oxide type surfactant and an N-acyl-N-methyl-β-alanine salt, which has good storage stability such as low temperature stability, and has excellent detergency and foaming power. The object of the present invention is to provide a cleansing composition that is gentle on the skin and has the following properties.

Another object of the present invention is to provide a detergent composition which imparts thickening effect, foam increasing effect and foam stability by incorporating an alkanolamide into the above combination, without degrading the properties of the above combination. It is about providing.

. The above-mentioned problems of Pat.me can be solved by selecting a specific amidoamine oxide as the amine oxide type surfactant and blending it with an N-acyl-N-methyl-β-alanine salt. Also. By adding alkanolamide to this combination, it has become possible to increase the viscosity and foam.

That is, the present invention is based on the general formula (1) (wherein R and C○ are saturated or unsaturated fatty acid residues having 10 to 20 carbon atoms, and R2 and R3 are methyl, ethyl, or hydroxyethyl groups. 1.5 to 20% by weight of amidoamine oxide represented by the general formula (I[)CH.

R4C0NCH2CH2C00M (II) (wherein R4Co is a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, M is an alkali metal, ammonium,
N-
Acyl-N-methyl-β-alanine salt 1,5 to 30
A cleaning composition characterized in that it contains % by weight of the above component (I>1.5 to 20% by weight, and 1.5 to 30% by weight of the component (II) of the general formula (Ill) (
In the formula, R5Co is a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, R6 is a hydrogen atom or a hydroxyethyl group, and n is an integer of 1 to 20. The present invention relates to a detergent composition characterized in that it is blended in an amount of 10 to 10% by weight.

The first component, amidoamine oxide, used in the present invention is a compound represented by the above general formula (I), in which R
Fatty acid residues that can be 1C0 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, and rapeseed oil fatty acid. Representative compounds of the amine oxide of general formula (I) include lauramidopropyl dimethylamine oxide, oleamidopropyl dimethylamine oxide, coco (coconut oil fatty acid acyl) amidopropyl dimethylamine oxide, and the like.

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 dimethylaminopropylamine. There is a way.

The second component N-acyl-N-methyl-β-alanine salt used in the present invention is a compound represented by the general formula (II>), and the acyl group includes lauric acid, myristic acid, palmitic acid, Examples include residues of fatty acids such as oleic acid, stearic acid, isostearic acid, coconut oil fatty acid, beef tallow fatty acid, and rapeseed oil fatty acid.N-acyl-N
-Methyl-β-alanine salts include alkali metal salts such as sodium salts and potassium salts, ammonium salts,
Examples include alkanolamine salts such as monoethanolamine salts and triethanolamine salts, and basic amino acid salts such as lysine salts.

In the second invention of the present invention, the alkanolamide used as the third component is a compound represented by the above general formula (III), and fatty acid residues that can become R5C0 groups in the formula include lauric acid, myristic acid, palmitic acid, acid,
Examples include residues of fatty acids such as oleic acid, stearic acid, isostearic acid, coconut oil fatty acid, beef tallow fatty acid, and rapeseed oil fatty acid.

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 20% by weight, foaming, detergency and storage stability will be poor, and if it exceeds 20% 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-acyl-N-methyl-β-alanine 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 decrease.

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

Unless the purpose of the present invention is impaired, other surfactants such as 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.

1) The storage stability of the cleaning composition of the present invention is improved because of amidoamine oxide and N-acyl-N-methyl-
This is thought to be due to the synergistic effect of β-alanine salt, but the detailed reason is unknown.

Fruit "1 Hiro" 22 j-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%.

As for storage stability, the following low temperature stability test and high temperature stability test were conducted. 3 (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 visually observed.

(High temperature stability) Pour 100cc of cleaning agent into a transparent bottle and place it in a 50°C constant temperature bath.
The appearance was visually observed after storage for several months.

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

○: Transparent liquid △: Opaque liquid ×: Cloudy or separated liquid Below margin Examples 6 to 11, Comparative Examples 8 to 13 With the composition shown in Table 2, A cleaning agent according to one aspect of the present invention and a cleaning agent according to a comparative example were prepared according to Example 1, and their viscosity and low-temperature stability were examined. 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 low temperature stability was determined according to Example 1.

The following margin Example 12 (Shampoo) Lauramidobropyl dimethyl % Amine oxide 12.0 N-oleoyl-N-methyl-β-alanine lysine salt 3.0 Lauric acid monoethanolamide polyethoxylate (5 moles Addition) 7.0 Citric acid
Amount to adjust pH to 7.0: 4 1 s of edetic acid
~Rium 0,3・
Non(-ance 100.0 Example 13 Shampoo) ・Palmitamidopropyl diethyl % Amine oxide 3.0 ・N-cocoyl-N-methyl-β-alanine triethanolamine salt 10.0 ・Lauric acid jetanolamide 3,0・Sodium lauryl alcohol sulfate 3.0・Citric acid Amount to adjust pH to 6.0,
Balance 100.0 The shampoo obtained in Example 12.13 was found to have good storage stability, excellent lathering and cleansing properties, and little irritation to the eyes.

Example 14 (transparent soap) - Cosmetic soap dough 72 parts - Lauramidopropyl dimethylamine oxide 5 - Cocoamide propyl bis(2-hydroxyethyl)-amine oxide 5, N-taloyl-N-methyl-β-alanine sodium 12. Palmi
Monoenolamide 6 The above formulation was added to a solution of 50 parts of ethanol and 50 parts of water and dissolved by heating. Then add dyes and fragrances, place in molds and cool and dry to obtain a transparent surface. It was found that this product did not lose its transparency even when stored at low temperatures for a long time, had good cleansing properties, gave a moist feel to the skin after washing the face, and was less irritating.

Example 15 Kitchen detergent - Cocoamidopropyl dimethyl % Amine oxide 3.0 N-myristoyl-N-methyl-β-alanine potassium 5.0 Lauric acid jetanolamide 3.0 Sodium lauryl ethoxy sulfate (3 mole addition ) 15.0・Sodium xylene sulfonate 4.0・Ethanol 5.0,
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 16 (Hand cleaner) - Ammonium lauryl sulfate salt 12.0% - Sodium lauryl ethoxy sulfate (3 moles added) 8.0 - Myristiamidopropyldimethylamine oxide 8.0 - N-cocoyl-N-methyl-β- Sodium alanine 3.0・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.

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

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

Claims (1)

[Claims] 1. General formula (I) ▲ Numerical 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, R_2 and R_3 represents a methyl group, ethyl group, or hydroxyethyl group) and 1.5 to 20% by weight of amidoamine oxide represented by general formula (II) ▲ Numerical formula, chemical formula, table, etc. ▼ (II) , R_4CO is a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, M is at least one selected from cationic residues of alkali metals, ammonium, alkanolamines, or basic amino acids) -acyl-N-methyl-β-alanine salt 1
．． A cleaning composition characterized in that it contains 5 to 30% by weight. 2. The composition according to claim 1, wherein R_2 and R_3 in general formula (I) are each a methyl group. 3. The composition according to claim 1, wherein M in general formula (II) is sodium. 4. 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, R_2 and R_3 are methyl groups, 1.5 to 20% by weight of amidoamine oxide (representing an ethyl group or hydroxyethyl group) and the general formula (II) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(II) (In the formula, R_4CO is the number of carbon atoms 10 to 20 saturated or unsaturated fatty acid residues, M represents at least one selected from cationic residues of alkali metals, ammonium, alkanolamines, or basic amino acids) -β-alanine salt 1
．． 5 to 30% by weight, and general formula (III) ▲ Numerical formula, chemical formula, table, etc. ▼ (III) (In the formula, R_5CO is a saturated or unsaturated fatty acid residue having 10 to 20 carbon atoms, and R_6 is a hydrogen atom. or hydroxyethyl group, n represents an integer of 1 to 20) 1.0 to 10% by weight
A cleaning composition comprising: 5. The composition according to claim 4, wherein R_2 and R_3 in general formula (I) are each a methyl group. 6. The composition according to claim 4, wherein M in formula (II) is sodium.