JP2529865B2 - Skin cleanser composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to a skin cleansing composition, and more particularly, to a skin cleansing composition having an excellent feeling in use, a long lasting foam, and excellent temperature stability. Regarding things.

(Prior Art) Conventionally, anionic surfactants such as alkyl sulfates, alkyl sulfonates, polyoxyethylene alkyl sulfates and alkylbenzene sulfonates have been widely used as surfactants used in skin cleansing agents. However, although this type of surfactant has a good foaming property, it has a poor foam lasting property and has a "slickness", so that a skin cleansing agent having a good usability cannot always be obtained. In addition, the soap that has been widely used in general is good in terms of "slickness", but has a foaming property,
It was not sufficient in terms of foam sustainability and smooth feeling of use. Therefore, efforts have been made to obtain a skin cleansing composition having an excellent feeling of use and a long-lasting foam by combining these surfactants, but still having a sufficient feeling of use and long-lasting foam. Moreover, a skin cleansing agent having no problem in stability has not been obtained.

(Problems to be Solved by the Invention) Therefore, in the present invention, good foaming property, smoothness and no “slickness”, which cannot be obtained by the combination of the surfactants used in the conventional skin cleansing agents. As a result of diligently studying to obtain a skin cleansing composition having a long-lasting foam and a long-lasting foam stability, a combination of a weakly fatty acid salt-forming salt and a sulfosuccinate salt is used. Excellent feeling
The inventors have found that a skin cleansing composition having a long-lasting foam, exhibiting no water separation and separation phenomena even at -5 ° C to 50 ° C and having a small change in viscosity can be obtained, and thus completed the present invention. .

(Means for Solving Problems) That is, the present invention provides a weak base salt of a fatty acid and the following general formula (I): A skin cleansing composition containing a sulfosuccinate group represented by:

The R portion of the sulfosuccinate salt used in the present invention is a higher alcohol having 8 to 22 carbon atoms, for example, lauryl alcohol, myristyl alcohol, cetyl alcohol, oleyl alcohol, stearyl alcohol, 2-ethylhexyl alcohol, polyoxyethylene alkyl ether. And so on.

Examples of M1 and M2 include sodium, potassium ammonium, alkanolamine, and basic amino acid.
As the sulfosuccinate salt used in the present invention, one kind or two or more kinds having different R moieties, M1 and M2 are arbitrarily selected and used.

Regarding the weak base salt of fatty acid which is the other component,
A fatty acid having 8 to 22 carbon atoms, for example, a single fatty acid such as lauric acid, myristic acid, palmitic acid, isostearic acid, and oleic acid, or a weakly basic salt of a mixed fatty acid such as palm fatty acid and beef fatty acid is used. . Here, the weak base salt means ammonium, etc., monoethanolamine salt, diethanolamine salt, triethanolamine salt, 2-amino-2-methylpropanol, alkanolamine salt such as 2-amino-2-methylpropanediol, lysine, Basic amino acids such as arginine are shown. It is not always necessary to mix these fatty acid weak base salts as fatty acid weak base salts, and the fatty acid and weak base may be blended independently and neutralized in the formulation system before use. In addition, one kind or two or more kinds of these weakly basic salts of fatty acids are arbitrarily selected and used.

The compounding ratio of the fatty acid weak base salt and the sulfosuccinate salt is used in the range of 10/1 to 1/10 by weight,
Especially when used in the range of 2/1 to 1/2, it has an excellent feeling of use,
A skin cleansing composition having a long-lasting foam can be obtained. The total blending amount of both depends on the type of detergent, but in the case of a liquid detergent, 3 to 30% by weight of the composition, in the case of a paste detergent 15 to 70% by weight, and in the case of a solid detergent 70
~ 95% by weight.

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, N-acyl-N- Methyl tauric acid, alkyl phosphate ester salt, alpha olefin sulfonate, higher fatty acid ester sulfonate,
Contains anionic surfactants such as alkyl ether acetates, polyoxyethylene alkyl ether acetates, fatty acid soaps, nonionic surfactants such as fatty acid amides and polyoxyethylene alkyl ethers, imidazoline-based and betaine-based amphoteric surfactants However, the effect of the present invention is not impaired.

Further, as other additives, a thickener, a curing agent, a usability improving agent such as a cationic polymer, a preservative, a sequestering agent, a fragrance, a coloring agent, etc. may be added to the composition of the present invention. The effect of the invention is not damaged.

(Effects of the Invention) The effects of the present invention will be specifically described below with reference to examples.

Examples 1 to 4 Liquid skin cleansing composition Lauric acid triethanolamine salt Lauryl sulfosuccinate 2 sodium or more Total 25% by weight Propylene glycol 5% by weight Ion-exchanged water Residual composition Lauric acid triethanolamine salt and sulfosuccinic acid 2 The composition ratio of sodium was changed, and the foaming power at that time, the smoothness of the foam, the ease of rinsing, and the stability (state) at high temperature (50 ° C) and low temperature (-5 ° C) were evaluated. It became like -1. The evaluation method was as follows.

Foaming power: CaCO370 ppm artificial hard water was used to prepare 400 ml of a 5% sample solution, and the foaming amount (foam volume) was measured using a cylindrical cylinder with a stirrer at a temperature of 30 ° C.

◎ Foaming is very good, foaming amount is 2100 ml or more ○ Foaming is good, foaming amount is 1800 to 2100 ml △ Foaming is normal, foaming amount is 1500 to 1800 ml × Foaming is not good, foaming amount is less than 1500 ml Sustainability of foam: After measuring the foaming amount above , The time required for the drainage volume to be 200 ml was measured ◎ Very good sustainability, 300 seconds or more ○ Good sustainability, 200 to 300 seconds △ Sustainability normal, 100 to 200 seconds × Poor sustainability, 100 seconds Less than smoothness: Sensory evaluation panel evaluated by 10 persons.

◎ Very good, 8 people or more ○ Good, 6 to 7 people △ Average, 4 to 5 people × Poor, less than 4 people Ease of rinsing: Sensory evaluation panel evaluated 10 people.

◎ Very good, 8 people or more ○ Good, 6 to 7 people △ Normal, 4 to 5 people × Poor, less than 4 people High temperature stability (50 ° C): Water separation, separation, viscosity change and other conditions were observed.

Low-temperature stability (-5 ° C): Conditions such as water separation, separation, and viscosity change were observed. (For the sake of convenience, the increase in viscosity is referred to as stickiness and the decrease in viscosity is referred to as low viscosity) As is clear from Table 1, by using lauric acid triethanolamine salt and sulfosuccinic acid lauryl disodium salt together, foaming ability: foam sustainability, smoothness, ease of rinsing, and stability are each active. It was confirmed that the agent synergistically improved compared to the agent alone.

Examples 5-8 Liquid skin cleansing composition Lauric acid triethanolamine salt Myristic acid triethanolamine salt Lauryl sulfosuccinate disodium salt Lauryl sulfosuccinate 2 triethanolamine salt Total 30% by weight Propylene glycol 5% by weight Ion-exchanged water Residue By changing the compounding ratio of triethanolamine laurate and disodium lauryl sulfosuccinate in the above composition, foaming power at that time, smoothness of foam, smoothness of rinsing, high temperature (50 ° C), low temperature (- Stability (state) at 5 ℃
The results are shown in Table 2.

As is clear from Table 2, two weak fatty acid salts of lauric acid triethanolamine salt and myristic acid triethanolamine salt, sulfosuccinic acid lauryl disodium salt, and sulfosuccinic acid lauryl 2 triethanolamine salt 2 Foaming power Sustainability, smoothness, smoothness,
It was confirmed that rinsing ease and stability were synergistically improved as compared with each active agent alone.

Examples 9 to 11 Paste-like skin cleansing composition Lauric acid triethanolamine salt Lauryl sulfosuccinate 2 sodium or more Total 60% by weight Propylene glycol 5% by weight Ion-exchanged water Residue With the above composition, laurate triethanolamine salt and sulfosuccinic acid When the blending ratio of lauryl disodium was changed and the foaming power at that time, the smoothness of the foam, the ease of rinsing, and the stability (state) at high and low temperatures were evaluated, the results are shown in Table-3. It was

As is clear from Table 3, by using the lauric acid triethanolamine salt and the sulfosuccinic acid lauryl disodium salt together, foaming ability foam sustainability, smoothness, rinsability, and stability are each active. It was confirmed that the agent synergistically improved compared to the agent alone.

Examples 12 to 14 Solid skin cleanser composition Myristic acid sodium salt Disodium lauryl sulfosuccinate Total 90% by weight or more Propylene glycol 5% by weight Ion-exchanged water Residue Myristic acid sodium salt and lauryl sulfosuccinate disodium salt When the blending ratio was changed and the foaming power at that time, the smoothness of the foam, the ease of rinsing, and the stability (state) at high temperature (50 ° C) and low temperature (-5 ° C) were evaluated, Table-4 It became like.

As is clear from Table-4, the combined use of myristic acid sodium salt and myristyl sulfosuccinate disodium salt improves the foaming ability of the foam such as sustainability, smoothness and rinsability as compared with each of the active agents alone. It was recognized that there was a synergistic improvement.

Claims (1)

(57) [Claims] 1. A weakly basic salt of a fatty acid and the following general formula (I): A skin cleansing composition comprising a sulfosuccinate salt represented by: