JPH04114100A - Detergent composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition having excellent and detergency with extremely low irritation to skin and hair and having fresh using feeling comprising respectively specific N-acyl aspartic acid salt and alkyl glycoside. CONSTITUTION:The aimed composition contains (A) N-acyl aspartic acid salt expressed by formula I (R1 is 7-21C alkyl or alkenyl; M1 and M2 are H, Na<+>, K<+>, NH4<+> or cation derived from alkanolamine with a proviso that M1 and M2 are not simultaneously H) and (B) alkyl glycoside expressed by formula II (R2 is 8-18C alkyl or alkenyl; G is 5-6C group derived from reduced sugar; n is integer of 1-5) preferably in a weight ratio of the components A/B=0.1-10 and in a total weight of 5-30wt.%.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention contains an anionic surfactant and a nonionic surfactant and is used in detergents for hair or laundry, dishwashing, etc. The present invention relates to a cleansing composition that has good properties in terms of cleansing properties, has extremely low irritation to the skin and hair, and gives a refreshing feel to the skin during and after use.

[Conventional technology]

BACKGROUND ART Conventionally, alkyl sulfates, α-olefin sulfonates, and the like have been widely used as main ingredients for detergents for hair, body, clothing, and tableware. However, although these anionic surfactants have excellent detergency, they lack a rich foam quality and are highly irritating to the skin.

Therefore, in recent years, N-long chain acyl acidic amino acid salts, including N-acylaspartate, which is the component (A) of the present invention, have attracted attention as shampoo base materials that are less irritating to the skin and eyes. . However, these have inferior foaming power and detergency when compared to polyoxyethylene alkyl ether 6AM ester salts and the like.

On the other hand, although the alkyl glycoside of component (B) is also hypoallergenic, it has the disadvantage of being inferior in foaming power and detergency.

Therefore, in JP-A-1-178597, a detergent composition containing N-acyl glutamic acid salt, N-anoralanine salt, and alkyl gliconide, which is hypoallergenic, has good foaming power, and has excellent foam quality, was developed. is proposed.

However, this also has the disadvantage that its foaming power and detergency are not fully satisfactory, and that it leaves a residual feeling such as sliminess on the skin after rinsing.

By using N-acylaspartate and alkyl glycoside instead of N-acyl glutamic acid, N-acylalanine salt, and alkyl glycoside, the present inventors have surprisingly found that all the above-mentioned disadvantages are alleviated by the political situation, and in particular, the slimy feeling The present invention has been completed based on the discovery that this can significantly improve bulkiness.

[Problem to be solved by the invention]

Therefore, an object of the present invention is to provide a detergent composition that is less irritating to the skin and hair, has excellent foaming and detergent power, and does not leave a feeling of detergent residue after rinsing.

[Means to solve the problem]

The present invention is a cleaning composition containing an N-acylaspartate represented by the general formula (A) and an alkyl glycode represented by the general formula (B).

General formula (A) (In the above formula, R7 is an alkyl group or alkenyl group having 7 to 21 carbon atoms, M+ and M! represent hydrogen or a cation derived from Na', Ni', NH= or alkanolamine, However, M and M are not hydrogen at the same time.) General formula (B) R2-〇-(G).

(In the formula, R2 is a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms, G is a residue derived from a reducing sugar having 5 to 6 carbon atoms, and n is an integer of 1 to 5. ) As the N-acylaspartate represented by the general formula (A) used in the present invention, N-sodium lauroyl-L-aspartate, N-potassium coconut oil fatty acyl-l-aspartate, N- Examples include, but are not limited to, sodium myristoyl-aspartate, 7N-valmitoyl-L-potassium aspartate, N-stearoyl-L-aspartate triethanolamine, and the like.

As raw materials for G in the alkyl glycoside represented by the general formula (B) used in the present invention, examples of monosaccharides include glucose, galactose, fructose, mannose, lyxose,
Examples include xylose, arabinose, etc., and maltose, isomaltose, xylobiose, lactose, sucrose, raffinose, etc. at 2 vM or more, but are not limited to these. Among these, preferred raw materials are glucose, fructose, maltose, and sucrose in terms of ease of use and low cost.

In the case of an alkyl glycoside composed of two or more residues, the binding mode of the sugar chain is 1-2.1.3.1-4.
．． Any one of 1-6 bonds may be used. Further, the degree of polymerization n of G is an integer of 1 to 5, but a mixture thereof (average degree of polymerization 1
．． 5) can also be used.

The total amount of general formulas (A) and (B) is approximately 3 to 50% by weight, preferably 5 to 30% by weight, based on the total amount of the cleaning composition. A blending amount of 3% by weight without grooves makes it difficult to obtain sufficient foaming power and detergency, and a blending amount exceeding 50% is unfavorable in terms of safety and stability.

In addition, the weight ratio of (A)/(B) is preferably in the range of 0.1 to 10; if it is less than 0.1 in this composition, sufficient foaming power and detergency cannot be obtained, and if it exceeds 10, I was overwhelmed with anticipation for its gentle effect on the skin and hair.

Furthermore, in addition to the above-mentioned essential components, the cleaning composition of the present invention can also contain components and additives commonly used in cleaning agents. Namely, higher alcohol, silicone oil,
Lanolin derivatives, oils such as ester oils, nonionic surfactants such as polyoxyethylene hydrogenated castor oil, etc.3 cationic polymers [Polymer JR (manufactured by Union Carbide Corporation), Polycoat NH (manufactured by Henkel), Marquat 550 (Merck ), Gaff Cut 755N (manufactured by
GAF), etc., disinfectants, chelating agents, ultraviolet absorbers2
Natural extracts of animals and plants and their derivatives, organic acids such as citric acid, inorganic salts such as sodium chloride, fragrances, pigments, etc. can be appropriately blended within the range that does not impair the effects of the present invention.

〔Example〕

Next, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited thereby. The content is expressed in weight %, and the effectiveness was measured by the following Test Method 5 evaluation method. In addition, by examining the protein denaturation rate,
It was replaced with a skin irritation test.

(Foaming power test method) Foaming power was measured according to the Ross Miles method. However, the sample is a 2% aqueous solution (CaCCL 50ppm artificial hard water used)
And the temperature is 40°C.

◎・・・Extremely good foaming (foaming power 250 or more)○
... Good foaming (foaming power 210 or more and less than 250) Δ... Normal foaming (foaming power 170 or more and less than 210 ×...poor foaming (foaming power less than 170 mm) Test method) 7% lanolin on a 5 cm x 5 cm wool muslin cloth.
and Sudan I 110.005% chloroform to a volume of 0.
, 4 m e was applied uniformly and dried, and the contaminated cloth was coated with 3 m e.
The contaminated cloth was placed in a glass cylinder of approximately 100 mA containing 40 ml of % cleaning solution and shaken for 15 minutes in a constant temperature bath at 40°C.The contaminated cloth was thoroughly rinsed under running water and dried, and the reflectance was determined using the following formula. The cleaning rate was determined.

In addition, the evaluation criteria were set as follows.

◎... Excellent cleaning performance (cleaning rate of 85% or more) ○... Good cleaning performance (cleaning rate of 70% or more and less than 85%) Δ... Fair cleaning performance (cleaning rate of 55% or more and less than 70%) ×・・・Poor cleaning performance (cleaning rate less than 55%) (Protein denaturation rate test method) When a sample is added to an egg albumin pH 711 buffer solution using aqueous high performance liquid chromatography at a sample concentration of 1%, the egg white The albumin modification rate was measured using the absorption peak at 220 nm.

Ho: Height of the 220 nm absorption peak of ovalbumin H5: 22 when the sample is added to the ovalbumin buffer solution
The criteria for evaluating the height of the 0 nm absorption peak was set as follows.

◎... Ovalbumin denaturation rate less than 30% O... Ovalbumin denaturation rate 30% or more and less than 60% Δ... Ovalbumin denaturation rate 60% or more and less than 80% ×... Ovalbumin denaturation rate 80% or more (Slimy feeling) Twenty women (panel) continuously used the cleaning agent of the present invention for one week and evaluated the feeling of use. As an evaluation method, each composition was placed on a bath sponge and lathered thoroughly.
The body was washed, then rinsed with warm water, and the slimy feeling of each part of the body after rinsing was evaluated.

◎... No slimy feeling O... Almost no slimy feeling Δ... Slightly slimy feeling ×... Large slimy feeling Examples 1 to 5. Comparative Examples 1 to 7 Cleaning agents having the compositions shown in Table 1 were prepared in a conventional manner, and the effects of each essential component were examined and the effects are shown in Table 1.

As is clear from Table 1, all of the cleaning agents using the components of the present invention shown in Examples 1 to 5 showed excellent performance. On the other hand, Comparative Example 1.2 using an N-acyl amino acid salt synthesized from an amino acid other than aspartic acid did not cause skin irritation, but a slimy feeling remained, and the foaming power and cleansing performance were inferior to the examples. . Comparative Example 3.4 lacking either N-acylaspartic acid or alkyl glycoside had poor foaming power and detergency, and was also slimy.

Example 6 A shampoo for hair having the following composition was prepared and evaluated using the method described above.

Blend composition (wt%) Alkyl glycond (C1□~+ -O(G)+~Z) 7
．． ON-lauroyl-L-aspartate triethanolamine 17.0 Hydrolyzed silk 0.2 Dipropylene glycol 3.0 Pigment, fragrance
Appropriate amount of purified water
Remaining Example 7 A body shampoo having the following composition was prepared and evaluated using the method described above.

Blend composition (wt%) alkyl glycoside CC+t~-h O(G)+~z)
2. ON-coconut oil fatty acid acyl-potassium aspartate 15.0 coconut oil fatty acid ethyl ester sodium sulfate 2.0 ethylene glycol distearate 0.8 concentrated glycerin 2.0 color 3 fragrance
Appropriate amount of purified water
Remaining Example 6. The hair shampoo and body shampoo of Nos. 7 and 7 were satisfactory in terms of foaming properties, cleansing properties, safety, and feel during use.

〔Effect of the invention〕

The present invention is less irritating to the skin and has foaming properties.

Excellent cleaning properties. Furthermore, compared to when N-acyl glutamate or N-acyl-β-alanine salt was used instead of N-acylaspartate, the slimy feeling after use was significantly improved and the product felt light and refreshing. It is clear that this is a cleaning composition that provides a soft feel.

Claims (1)

[Scope of Claims] A cleaning composition containing an N-acylaspartate represented by the following general formula (A) and an alkyl glycoside represented by the following general formula (B) General formula (A) ▲Mathematical formula , chemical formulas, tables, etc. ▼ (In the above formula, R_1 is an alkyl group or alkenyl group having 7 to 21 carbon atoms, M_1 and M_2 are hydrogen or Na^+
, K^+, NH_4^+ or a cation derived from an alkanolamine. However, M_1 and M_2 are never hydrogen at the same time. ) General formula (B) R_2-O-(G)_n (In the formula, R_2 is a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms, and G is a reducing sugar having 5 to 6 carbon atoms.) n represents an integer from 1 to 5.)