JPH0761921A - Liquid washing agent composition - Google Patents

Abstract

PURPOSE:To obtain a liquid washing agent composition having little stimulation and excellent usability, free from deterioration of color tone and odor during a high temperature storage and practically advantageous. CONSTITUTION:A liquid washing agent composition contains (A) 2-60wt.% of a secondary amide type N-acylamino acid salt of formula I (R<1>CO is 10-16C straight chain acyl; n-1, 2; M<1> is Na, K or alkanolammonium when n=1 and K or alkanoammonium when n=2), e.g. lauroyl-beta-alanine triethanolammonium salt, (B) 0.01-1.0wt.% of a phosphonic acid compound of formula II (M<2> is H or alkali metal), e.g. 1-hydroxyethylidene-1,1-diphosphonic acid and (C) 0.05-1.0wt.% of dibuthylhydroxytoluene of formula III. The optical compounding ranges of the above-mentioned active components are as follows; A=4-40wt.%, B=0.02-0.5wt.% and C=0.1-0.5wt.%. The deteriorations of color and odor are effectively prevented by using B and C in combination with each other.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a detergent composition, and more particularly to the addition of a specific phosphonic acid compound and dibutylhydroxytoluene to a detergent composition containing an N-acylated amino acid type surfactant. Thus, the present invention relates to a liquid detergent composition which is low in irritation, has excellent feeling in use, and prevents deterioration of its color tone and odor.

[0002]

2. Description of the Related Art Body cleansing compositions generally contain an anionic surfactant as a main component. Soaps, that is, higher fatty acid salts, are used for cleansing the skin, and alkyl sulfates and alkyl sulfones are used for cleaning the hair. The acid salt is mainly used. However, the soap used for washing the skin has a drawback that it causes squeaky and taut during rinsing, and the alkyl sulfates and alkyl sulfonates used for washing the hair have excellent detergency but are irritating. I had a problem with.

Therefore, it has been studied to use a specific N-acylated amino acid type surfactant as a main base of a detergent as a surfactant having an excellent feeling of use and a low irritation.
This has problems such as coloration and deterioration of odor during storage at high temperature, and is not yet satisfactory as a surfactant for detergent compositions.

[0004]

Therefore, it has been desired to develop a detergent composition capable of preventing coloration and odor deterioration even at high temperature storage while utilizing the characteristics of N-acylated amino acid type surfactants. .

[0005]

Under such circumstances, the present inventor has conducted earnest research to solve the above-mentioned drawbacks with respect to a detergent composition using an N-acylated amino acid type surfactant, and as a result, it has now been discovered. By adding the phosphonic acid compound represented by the general formula (2) and the dibutylhydroxytoluene represented by the formula (3) to the N-acylated amino acid type surfactant represented by the general formula (1), The present invention has been completed by finding that a liquid detergent composition that prevents coloration and deterioration of odor during storage at temperature can be obtained.

That is, the present invention provides the following components (A), (B) and (C); (A) the following general formula (1): 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 a sodium atom, a potassium atom or an alkanol ammonium when n is 1.] , A potassium atom or an alkanol ammonium when n is 2] 2 to 60% by weight of a secondary amide type N-acyl amino acid salt represented by the following general formula (2):

[0007]

[Chemical 3]

[Wherein, M ² represents a hydrogen atom or an alkali metal atom] 0.01 to 1.0% by weight (C) The following formula (3):

[0009]

[Chemical 4]

The present invention provides a liquid detergent composition containing 0.05 to 1.0% by weight of dibutylhydroxytoluene represented by:

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 ions contained in tap water or the like to form highly lubricious plate crystals. When added to a detergent composition, it exhibits an effect of giving a good feeling of use such as slippage after washing. Here, the lubricity of the plate-like crystals produced by the reaction of the secondary amide type N-acyl amino acid salt and calcium ion is determined by, for example, regenerating dried pig skin (Aloask, manufactured by Antibody Chemical Industry Co., Ltd.) with physiological saline. It is determined by measuring the coefficient of static friction of the plate-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, the lubricity of the plate-like crystals to be formed is deteriorated, which is not preferable.

Examples of the alkanolammonium represented by M ¹ include monoethanolammonium, diethanolammonium and triethanolammonium, with triethanolammonium being particularly preferred.

In the general formula (1), n is 2 and M
Those in which ¹ is a sodium atom have a high crafting point,
Since it is poor in water solubility, it is not preferable when used in a liquid detergent.

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, N
-When the acyl group constituting the acyl group is branched or the amide structure is a tertiary amide type, the production of plate crystals is suppressed, the physical properties of the produced crystals are poor in lubricity, and sticky. It is difficult to obtain a favorable feeling because it is too much.

In the present invention, the compounding amount of the secondary amide type N-acyl amino acid salt of the component (A) is 2 to 60 in the total composition.
% By weight (hereinafter referred to simply as%), preferably 4-40%
Is. If the blending amount is less than 2%, a good feeling due to the plate-like crystals generated during rinsing cannot be obtained, while 60%
When it exceeds, the liquid gels and a good liquid detergent composition cannot be obtained.

The phosphonic acid compound as the component (B) used in the present invention is represented by the above general formula (2). In the formula, the alkali metal atom represented by M ² is a sodium atom, a potassium atom, Examples thereof include a lithium atom.

The amount of the phosphonic acid compound as the component (B) is 0.01 to 1.0%, preferably 0.0
2 to 0.5%. When the blending amount is less than 0.01%, it is not possible to prevent coloration and deterioration of odor even when used in combination with dibutylhydroxytoluene which is the component (C) described later,
On the other hand, if it exceeds 1.0%, the odor of the phosphonic acid compound itself is deteriorated, and the deterioration of the odor cannot be prevented.

The amount of dibutylhydroxytoluene represented by the formula (3) of the component (C) of the present invention is 0.05 to 1.0%, preferably 0.1 to 0.5% in the total composition.
%. If the blending amount is less than 0.05%, it is not possible to prevent coloring and odor deterioration. On the other hand, if it is more than 1.0%, the effect of preventing coloring and odor deterioration is almost achieved even when used in combination with the phosphonic acid compound. It is not preferable because it will reach equilibrium.

The liquid detergent composition of the present invention is produced according to a conventional method, but it is preferable to use water as the liquid medium, and the amount thereof is preferably 50 to 90% of the total composition.

In the liquid detergent composition of the present invention, other surfactants such as alkyl sulfates, alkyl sulfonates, polyoxyethylene alkyl sulfates, alkylbenzene sulfonates, N-acyl-N- Anionic surfactants such as methyl taurine salt, alpha olefin sulfonate, alkyl ether acetate, polyoxyethylene alkyl ether acetate, fatty acid amide, polyoxyethylene alkyl ether, sugar ester-based, sugar ether-based, sugar amide-based Nonionic surfactants such as the above, and amphoteric surfactants such as imidazoline-based and betaine-based can also be optionally used in combination 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, A bactericidal agent, an anti-inflammatory agent, a preservative and the like can be added.

The liquid cleansing composition of the present invention is suitable as a cleansing agent for the body such as skin or hair, and is preferably used for cleansing the skin.

[0024]

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 liquid detergent composition having the composition shown in Tables 1 and 2 below was prepared, and each of the liquid detergent compositions was evaluated for its anti-coloring effect and the anti-coloring effect based on the following methods and criteria. The effect of preventing deterioration of the dough odor was evaluated. The results are shown in Tables 1 and 2.

(1) Anti-coloring effect: The prepared liquid detergent composition was stored under accelerated test conditions at 50 ° C. for 20 days, and the coloring degree was visually evaluated by the following evaluation criteria as compared with that immediately after preparation. judge. ◯: Good with no change in color tone. Δ: Unusable due to change in color tone. ×: Unusable due to remarkable change in color tone.

(2) Deterioration effect of dough odor: The prepared liquid detergent composition was stored under accelerated test conditions at 50 ° C. for 20 days, and judged immediately after preparation by sensory evaluation by odor panelists as a standard. To do. ◯: Good with no change in odor. Δ: Can be used although there is a change in odor. ×: Unusable due to remarkable change in odor.

[0028]

[Table 1]

[0029]

[Table 2]

As is clear from the results of Tables 1 and 2, the product of the present invention was superior to the comparative product in the effect of preventing coloration and the effect of preventing deterioration of dough odor.

Example 2 A liquid detergent composition having the following composition was prepared by dissolving the component (1), cooling and then adding the components (2) to (5). The obtained liquid detergent composition is also less irritating,
It was excellent in usability and stability in color tone and odor during storage at high temperature.

[0032]

[Table 3] [Composition] (wt%) (1) Lauroyl-β-alanine triethanolamine 25 (2) 1-Hydroxyethylidene-1,1-diphosphonic acid 0.1 (3) Dibutylhydroxytoluene 0.2 (4) Ethanol 3 (5) Perfume 0.5 (6) Purified water Balance

[0033]

The liquid detergent composition of the present invention has low irritation,
It is excellent in practical use and has no deterioration in color tone and odor even when stored at high temperature, which is practically advantageous.

Claims (1)

[Claims] 1. The following components (A), (B) and (C); (A) the following general formula (1): R ¹ CONH (CH ₂ ) _n COOM ¹ ... (1) [Formula] Wherein R ¹ CO represents a linear acyl group having 10 to 16 carbon atoms, n represents a number of 1 or 2, M ¹ is a sodium atom, a potassium atom or an alkanol ammonium when n is 1, and n is 2 represents a potassium atom or an alkanolammonium] 2 to 60% by weight of a secondary amide type N-acyl amino acid salt represented by the formula (B) The following general formula (2): [Wherein M ² represents a hydrogen atom or an alkali metal atom] 0.01 to 1.0% by weight (C) The following formula (3): A liquid detergent composition containing 0.05 to 1.0% by weight of dibutylhydroxytoluene.