JPH1150091A - Cleanser containing betaine type amphoteric surfactant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleanser composition containing a betaine type amphoteric surfactant and excellent in viscosity and foamability, while eleminating problems that conventional cleanser compositions do not satisfy both the viscosity and the foamability that the production of a cleanser composition having both a desired viscosity and a desired foamability requires the increase in the concentration of a surfactant and that the increase in the concentration of the surfactant causes the increase of production cost and the pollution of environments such as rivers. SOLUTION: This cleanser composition contains an alkylamide propyl betaine whose 70 wt.% or more is occupied with a betaine compound having a 13C alkyl group, and the cleanser composition has a viscosity of 1.5 times or larger and a foamability of 1.3 times or larger those of a cleanser composition replaced by a betaine compound having a 11C coconut oil fatty acid residue.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition containing a betaine-type amphoteric surfactant excellent in thickening and foaming properties.

[0002]

BACKGROUND OF THE INVENTION Hitherto, amphoteric surfactants are dermatologically mild surfactants due to their behavior and protein-like structure. It also forms a complex with anionic surfactants, which can mildly stimulate these surfactants. Therefore, its main use is widely used as a mild surfactant for cosmetics, cosmetics, detergents for washing hands and dishes, and the like. It is known that the amphoteric surfactant has improved foaming properties when combined with an anionic surfactant or an alkanolamide type nonionic surfactant. Recently, a detergent formulation using a combination of a mild surfactant for the skin, for example, a method of using an N-acylglutamate and a betaine-type amphoteric surfactant in combination (Japanese Patent Laid-Open No. 59-1891).
97), a method in which an alkyloyl neutral amino acid salt, a betaine-type amphoteric surfactant, and an alkanolamide-type surfactant are used in combination (Japanese Patent Application Laid-Open No. 63-6096). A method in which a surfactant is used in combination with an alkanolamide-type surfactant (JP-A-53-26805) is disclosed. However, with these detergent compositions, a product satisfying the thickening and foaming properties cannot be obtained.In order to obtain the desired thickening and foaming properties, the concentration of the surfactant must be increased. In addition, there arises a problem of increased cost and a problem of environmental pollution of rivers and the like.

[0003]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, an object of the present invention is to provide a detergent composition containing a betaine-type amphoteric surfactant excellent in thickening and foaming properties. And

[0004]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, a cleaning composition which satisfies all of the above characteristics can be obtained by combining a specific alkylamidopropylbetaine. This led to the completion of the present invention. That is, the present invention
A detergent composition containing an alkylamidopropyl betaine, wherein the betaine compound in which the alkyl group has 13 carbon atoms accounts for 70% by weight or more, and the viscosity of the detergent composition is 11 carbon atoms and coconut oil fatty acid residue. A cleaning composition characterized in that the cleaning composition is 1.5 times or more as compared with the cleaning composition substituted with the base betaine compound.

In the present invention, 1 to 20% by weight, preferably 2 to 15% by weight, of a betaine compound occupying 70% by weight or more of alkylamidopropylbetaine having an alkyl group of 13 carbon atoms is added to the detergent composition. . If the thickness is out of this range, sufficient thickening and foaming properties cannot be obtained. The other surfactant can be arbitrarily selected from anionic surfactants, nonionic surfactants, and cationic surfactants, and one or more of these can be used arbitrarily.

[0006] In the present invention, in addition to the above components, components and additives commonly used as detergents may be added. For example, higher alcohols, silicone derivatives, protein derivatives, squalane, jojoba oil, oily components such as olive oil, lanolin, lecithin, humectants such as glycerin and ethylene glycol, water-soluble polymers such as hydroxypropylcellulose and hydroxyethylcellulose, and bactericides ,
It may contain chelating agents, ultraviolet absorbers, pH adjusters, natural extracts derived from animals and plants, pigments, fragrances and the like.

By the way, the present invention relates to a detergent composition in which the alkyl group is substituted with alkylamidopropyl betaine having 11 carbon atoms and a coconut oil fatty acid residue, more specifically, lauric amide propylbetaine and coconut oil fatty acid amidepropyl betaine. Amidopropyl betaine myristate is 1.5 times or more more viscous than
(Preferably 1.8 times or more) More preferably, the foaming property is 1.3 times or more excellent. For example, Japanese Patent Application Laid-Open No. 63-6096 discloses a detergent composition having excellent foaming power, but foaming equivalent to amide propyl betaine laurate or coconut fatty acid amide propyl betaine and amide propyl betaine myristic acid. There were many questions about the foaming power, not limited to this patent, such as claims for power. In addition, there is almost no mention of such a thickening effect in such a detergent composition, and even if it was disclosed, no specific difference was shown. Therefore, by clarifying these questions, a detergent composition excellent in thickening and foaming properties as in the present invention could be presented.

[0008]

Next, the present invention will be described in more detail by way of examples. The present invention is not limited by this.

Examples 1 to 8 Eight kinds of detergent compositions were prepared according to the composition shown in Tables 1 to 3, which were blended with amidopropyl betaine myristate represented by the following chemical formula.

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[Table 1]

[Table 2]

[Table 3]

Comparative Examples 1 to 16 Sixteen detergent compositions were prepared according to the compositions shown in Tables 4 to 6.

[Table 4]

[Table 5]

[Table 6]

Each of the detergent compositions of Examples 1 to 8 and Comparative Examples 1 to 16 was evaluated for stability over time, thickening and foaming properties in the following manner. Table 7 shows the results.

(1) Stability over time A sample (detergent composition) was stored at -5 ° C. and 40 ° C. for one week, and its appearance was evaluated by the following three steps. ：: Good stability (no change in appearance with transparent liquid) △: Slightly poor stability (slightly turbid or colored) ×: Poor stability (precipitation is recognized or solidified)

(2) Foaming property An aqueous solution having a sample concentration of 0.1% by weight was prepared, and the foam height was measured at 40 ° C. immediately after sample introduction (bubble force) and 5 minutes later (stability) by the Rossmiles method. Was measured (JIS K3362).
-1970).

(3) Viscosity and thickening After the sample was prepared, the sample was allowed to stand in a constant temperature bath at 25 ° C. for 24 hours. 3 of 30
The viscosity was measured by rotation, and evaluated by the ratio (thickening) to the viscosity of the detergent in which the alkyl (C13) amidopropylbetaine contained in the sample was replaced with a betaine compound of carbon 11 and coconut oil fatty acid residue.

[Table 7]

Results 1 to 16 Table 8 shows a comparison between amide propyl betaine laurate and amidopropyl betaine myristate, and Table 9 shows a comparison between amide propyl betaine coconut oil fatty acid and amidopropyl betaine myristate. As is clear from the above evaluation results, the cleaning compositions of the present invention of Examples 1 to 8 are all excellent in stability over time, and show a value of 1.5 times or more in viscosity, and , The foaming property was 1.3 times or more.

[Table 8]

[Table 9]

[0016]

As described above, according to the present invention, it is possible to provide a detergent composition containing a betaine-type amphoteric surfactant excellent in thickening and foaming properties.

Claims (2)

[Claims] 1. A detergent composition comprising an alkylamidopropylbetaine, wherein the betaine compound having an alkyl group having 13 carbon atoms accounts for 70% by weight or more, and the viscosity of the detergent composition is 11 carbon atoms. And a detergent composition which is 1.5 times or more the detergent composition substituted with a betaine compound of a coconut oil fatty acid residue. 2. The cleaning composition according to claim 1, wherein:
A detergent composition characterized in that the foaming property of the detergent composition is 1.3 times or more that of a detergent composition substituted with a betaine compound having 11 carbon atoms and a coconut oil fatty acid residue.