JPH08245982A - Cleaning agent composition - Google Patents

Abstract

PURPOSE: To provide a cleaning agent composition containing a secondary amide type N-acyltaurine salt and an amphoteric surfactant, having a low irritation to skin and hair, excellent in foaming and rinsing properties and capable of giving a preferable feeling after cleaning. CONSTITUTION: This composition contains (A) a secondary amide type N- acyltaurine salt of the formula, RCONHCH2 CH2 SO3 M (RCO is a C10-16 straight- chain acyl; M is Na, K or an alkanol ammonium), and (B) a betaine type amphoteric surfactant (preferable example; a coconut oil alkyldimethylaminoacetic acid betaine, or laurylhydroxysulfobetaine) in an weight ratio of A/B of 100/1 to 2/1 (preferably 50/1 to 5/1), more preferably contains the components (A) and (B) and (C) a higher fatty acid salt such as sodium laurate in an weight ratio of component C/components A+B of 1/20 to 1/2 (preferably 1/10 to 1/3). In addition, it is preferable that total blend amount of the compounds A and B is 5 to 50wt.%, 15 to 70wt.%, and 40 to 95wt.% in the cases of liquid, paste type and solid cleaning agents, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition, and more particularly to a detergent composition having a low irritation to the skin and hair, an excellent foaming property and a good feeling after washing. Regarding

[0002]

2. Description of the Related Art A personal cleansing composition generally contains an anionic surfactant as a main component and is used for cleansing the skin with soap,
That is, higher fatty acid salts are mainly used, and for hair, alkyl sulfates and sulfonates are mainly used.

Soaps used for cleaning the skin have the drawback of producing squeaks and tautness, and the alkyl sulphates and sulphonates used for cleaning the hair do not have the squeaky or tautnesses of soaps. It has excellent detergency, but has a problem in terms of irritation. 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 excellent feeling of use and low irritation. I was not completely satisfied.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a detergent composition which is excellent in foaming, has low irritation, and has a good feeling in use.

[0005]

Under these circumstances, the inventors of the present invention have conducted extensive studies and as a result, as a result of combining a specific secondary amide type N-acyl taurine compound and an amphoteric surfactant in combination, The inventors have found that the object is achieved and have reached the present invention.

That is, the present invention provides the following components (A) and (B) (A) a secondary amide type N-acyl taurine salt represented by the following general formula (1).

Embedded image RCONHCH ₂ CH ₂ SO ₃ M (1) (wherein RCO represents a linear acyl group having 10 to 16 carbon atoms, and M represents sodium, potassium or alkanol ammonium). (B) Amphoteric surface activity The present invention provides a detergent composition containing an agent.

The secondary amide type N-acyl taurine salt of the component (A) used in the present invention has the property of reacting with calcium contained in tap water to form highly lubricious plate crystals. It shows the effect of imparting a good feeling of use such as slippage after washing to a detergent composition containing the above. Here, the lubricity of the plate-like crystals formed by the reaction of the secondary amide type N-acyl taurine salt and calcium is, for example, the plate on a dried pig skin (Aroask, manufactured by Antibody Chemical Industries) regenerated with physiological saline. It is determined by measuring the coefficient of static friction of crystalline 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 secondary amide type N-acyl taurine salt, RCO in the general formula (1) has 1 carbon atom.
It is preferably a linear acyl group of 0 to 16, and particularly preferably 12 to 14, and specifically, a caprinoyl group, a lauroyl group or a myristoyl group is preferable. When the carbon number is more than 16, it is not preferable because the lubricity of the plate-like crystals to be formed is lowered, and when the carbon number is less than 10, foaming is lowered, which is not preferable. In addition, it is very important that the secondary amide type N-acyl taurine salt has a secondary amide type structure in which the N-acyl group is composed of the linear acyl group. That is, when the acyl group forming the N-acyl group is branched or the amide structure is a tertiary amide type, the production of plate crystals is suppressed, and the physical properties of the produced crystals are poor in lubricity. However, since it is often sticky, it is difficult to obtain a favorable feeling.

Examples of the amphoteric surfactant (B) used in the present invention include carbobetaine surfactants, amidobetaine surfactants, sulfobetaine surfactants,
Examples thereof include betaine-based surfactants such as hydroxysulfobetaine-based surfactants, amide sulfobetaine-based surfactants and phosphobetaine-based surfactants.

More specific examples of the betaine-based surfactant in the present invention include the following. (1) A carbobetaine-based surfactant having an alkyl group, an alkenyl group, or an acyl group having 8 to 24 carbon atoms. (2) An amidobetaine-based surfactant having an alkyl group, an alkenyl group, or an acyl group having 8 to 24 carbon atoms. (3) A sulfobetaine-based surfactant having an alkyl group, an alkenyl group, or an acyl group having 8 to 24 carbon atoms. (4) A hydroxysulfobetaine-based surfactant having an alkyl group, an alkenyl group, or an acyl group having 8 to 24 carbon atoms. (5) An amide sulfobetaine-based surfactant having an alkyl group, an alkenyl group, or an acyl group having 8 to 24 carbon atoms. (6) A phosphobetaine-based surfactant having an alkyl group, an alkenyl group, or an acyl group having 8 to 24 carbon atoms.

Preferable examples of the component (B) include coconut oil alkyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, stearyldihydroxyethylaminoacetic acid betaine, laurylhydroxysulfobetaine, laurylsulfobetaine, laurylphosphonate. Examples include betaine.

These betaine surfactants as the component (B) may be used either individually or in combination of two or more, and are used in an amount of 0.5 to 25% by weight based on the total composition of the detergent of the present invention.
It is particularly preferable to add 1 to 10% by weight.

Component (A) in the detergent composition of the present invention
A / B = 100/1 in terms of weight ratio with the component (B).
To 2/1, particularly preferably 50/1 to 5/1. Further, the total amount of the components (A) and (B) blended varies depending on the dosage form of the detergent composition, but in the case of a liquid detergent, it is 5 to 50 in the composition.
It is preferably 15% by weight to 50% by weight in the case of a paste-like detergent and 40 to 95% by weight in the case of a solid detergent.

By adding a higher fatty acid salt (C) to the detergent composition of the present invention, in addition to the above characteristics,
Further, a cleaning agent having a good foaming property and a good feeling of foam can be obtained. Here, the higher fatty acid salt (C) has, for example, 8 to 2 carbon atoms.
The base salt of the fatty acid of 2 is mentioned. Specifically, in addition to single fatty acids such as lauric acid, myristic acid, palmitic acid, isostearic acid, and oleic acid, coconut oil fatty acid,
Mention may be made of basic salts of mixed fatty acids such as beef tallow fatty acid. Here, as the salt, inorganic basic salts such as sodium and potassium, ammonium salts, monoethanolamine salts,
Examples thereof include alkanolamine salts such as diethanolamine salt and triethanolamine salt (hereinafter abbreviated as TEA), and basic amino acids such as lysine and arginine. These higher fatty acid salts (C) do not necessarily have to be blended as fatty acid salts, and fatty acids and bases may be blended independently to form fatty acid salts in the formulation system. These higher fatty acid salts may be used alone or in admixture of two or more. The blending amount of the higher fatty acid salt (C) in the detergent composition of the present invention varies depending on the blending amounts of the component (A) and the component (B), and the weight ratio is (C) / (A) + (B). =
1/20 to 1/2, particularly 1/10 to 1/3 are preferable.

The detergent composition of the present invention includes other surfactants such as alkyl sulfates, alkyl sulfonates, polyoxyethylene alkyl sulfates, alkylbenzene sulfonates, N-acyl sarcosine salts and N-acyl salts. Anionic surfactants such as amino acid salts, N-acyl-N-methyl taurine salts, alpha-olefin sulfonates, higher fatty acid ester sulfonates, alkyl ether acetates, polyoxyethylene alkyl ether acetates, etc.,
Fatty acid amide, polyoxyethylene alkyl ether,
Nonionic surfactants such as sugar ester-based, sugar ether-based and sugar amide-based surfactants can be optionally used in combination within a range that does not impair the effects of the present invention.

Further, as other additives, the components usually used in detergents can be optionally used in combination within a range not impairing the effects of the present invention. For example, humectants such as propylene glycol, sorbitol, glycerin,
Addition of viscosity modifiers such as carboxyvinyl polymer, methyl cellulose, ethanol, polyoxyethylene glycol distearate, pearling agents, fragrances, pigments, UV absorbers, antioxidants, bactericides, anti-inflammatory agents, preservatives, etc. be able to.

The detergent composition of the present invention is produced by a conventional method and can be made into a paste form, gel form, liquid form, solid form or the like, and is suitable as a detergent for the body such as skin or hair. In particular, it is preferably used for cleaning the skin.

[0018]

EXAMPLES Next, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

Examples 1 to 10 and Comparative Examples 1 to 5 A cleaning composition having the composition shown in Table 1 below was prepared, and the foaming amount and feeling of use of these cleaning compositions were measured by the following method. And evaluated based on the criteria. Table 1 shows the results.

(Evaluation of foaming amount) A 20-fold diluted aqueous solution was prepared for each cleaning composition, and 100 ml of this solution was prepared.
(Liquid temperature 40 ° C) is injected into the graduated cylinder. Next, a stirring blade is installed in the above solution, and stirring is started for 30
The volume (ml) of the foam generated after 2 seconds was measured and used as the foaming amount. The rotation speed of the stirring blade was 1000 rpm, and it was reversed every 5 seconds.・ Evaluation criteria ◎; foaming amount of 250 ml or more ○; foaming amount of 200 ml to less than 250 ml △; foaming amount of less than 200 ml

(Evaluation of Feel of Use) With respect to each detergent composition, 10 panelists each of male and female were asked to wash their bodies for one week, and sensory evaluation was performed. For the evaluation, an average value was calculated based on the following criteria. When the average value was 4.5 or more, it was very good (⊚), when 3.5 to 4.4, it was good (∘), and 2.5 to 3. The case of 4 was judged to be normal (Δ), and the case of 2.4 or less was judged to be defective (x). Defoaming during rinsing 5; Good defoaming 4; Good defoaming 3; Normal 2; Poor defoaming 1; Poor defoaming Sliding during rinsing, sliding after rinsing and sliding after drying 5; Good sliding 4; Slightly sliding 3; Normal 2; Sliding is slightly bad 1; Sliding is bad

[0022]

[Table 1]

Example 11 According to the above composition, the above-mentioned components were dissolved in heated water, and after cooling, the above-mentioned components were added to prepare a liquid detergent composition. When the skin was washed with the obtained detergent composition, the foaming was very good, the foam was broken and the sliding from the time of rinsing to the time of drying was good, and the feeling of use was excellent.

[0024]

EFFECT OF THE INVENTION The cleaning composition of the present invention has excellent foaming properties, low irritation, good foam breakage, and high lubricity on the surface of the object to be cleaned from the time of rinsing to the time of drying, and is used. There is no squeaky or tight feeling afterwards,
It has excellent usability and is particularly suitable for cleaning the skin.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location // A61K 7/00 A61K 7/00 C (72) Inventor Teruyuki Nagata Asakuta-cho, Omuta-shi, Fukuoka Address 30 Mitsui Toatsu Chemicals, Inc.

Claims (2)

[Claims] 1. The following components (A) and (B) (A) A secondary amide type N-acyl taurine salt represented by the following general formula (1): embedded image RCONHCH ₂ CH ₂ SO ₃ M ( 1) (In the formula, RCO represents a linear acyl group having 10 to 16 carbon atoms, and M represents sodium, potassium or alkanolammonium.) (B) A detergent composition containing an amphoteric surfactant Stuff. 2. The cleaning composition according to claim 1, further comprising (C) a higher fatty acid salt.