JPS6272796A - Detergent composition for human body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a novel body cleansing composition. More specifically, the present invention relates to a gel-like body cleansing composition that does not have a slimy feel and has good stability.

[Prior Art] Soap and N-
BACKGROUND OF THE INVENTION Solid, paste, gel, cream, and liquid detergent compositions containing acyl glutamate as a main component are known. However, although these product groups are satisfactory in terms of detergency and ease of rinsing after washing, they are not fully satisfactory in terms of foaming and foam quality. Ease of rinsing here means that there is no slimy feeling, such as when the skin feels slimy after washing. On the other hand, sulfate-based surfactants used as bases for detergents such as shampoos have the characteristics of quick foaming and light foam, but even though they are anionic surfactants, they have a strong slimy feel and are difficult to wash hair. Although it is suitable for use in the body, it does not feel good when used on the body, so it was never used as a main ingredient. For the same reason, betaine surfactants are also rarely used as the main base in body cleansing compositions. Therefore, these sulfate-based anionic surfactants and betaine-based surfactants are known to thicken and gel in a specific combination region, as disclosed in JP-A-60-1.
41797 r gel-like composition",
Although it has the characteristics of good foaming in hard water and light foam quality, its characteristic slimy feel makes it undesirable to use it as a main base in body cleansing compositions. is the current situation.

[Problems to be Solved by the Invention] In view of the above circumstances, the present inventors have developed a gel-like composition produced in a specific combination region of a sulfate-based anionic surfactant and a betaine-based surfactant, which has a slimy feel. As a result of intensive research in order to obtain a body cleansing composition that is easy to rinse, does not cause problems such as precipitation at low temperatures, and has good stability, we have found that a specific anionic surfactant and
We discovered that the above problem could be solved by adding an amino acid surfactant and/or a weak base salt of a higher fatty acid to a surfactant base that is a combination of betaine surfactants in a specific ratio. Based on this, the present invention has been completed.

[Means for solving the problems] That is, the present invention provides (i) the following general formula (A) RIO (
CH2CH2)aSO3M... (A) (wherein, R represents an alkyl group or alkenyl group having an average number of carbon atoms of 8 to 20, and M represents an alkali metal or an organic amine. a
represents a number from O to 3. ) 2 to 20% by weight of one or more anionic surfactants represented by (if) 3 to 25% by weight of one or more betaine amphoteric surfactants; (ii myroamino surfactants and It consists of 4 to 20% by weight of one or more selected from the group consisting of weak base salts of higher fatty acids and (iv) water, and the molar ratio of (i):(ii) is 1:10 to 4:1. This is a body cleansing composition characterized in that it contains a composition.

Hereinafter, the configuration of the present invention will be explained in detail.

The anionic surfactant represented by the following general formula (A) used in the present invention is generally called a sulfate-based anionic surfactant.

In the formula, R1 represents an alkyl or alkenyl group having an average number of carbon atoms of 8 to 20, M represents an alkali metal or an organic amine, and a is an integer of 0 to 3.

Commercially available anionic surfactants include Toho Chemical's 5P-40, AP-30, and TA-40.

In the present invention, one or more of these may be arbitrarily selected and used.

RIO(CH2CH2)a303M ・” ” ” ”
(A) As the betaine amphoteric surfactant used in the present invention, an amidobetaine amphoteric surfactant represented by the following general formula (B) (CH2)yCH3 [commercially available products include Revon 2000 (Sanyo Kasei), That'＞BDF(
Nippon Oil & Fats), etc.], or the following general formula (C) (
The amidosulfopetaine type amphoteric surfactant represented by CH2)ycH3 is represented by the following general formula (D) (CH2h CH3 [Commercially available products include Anon BL (NOF), Deviton AB- 1, such as 30 (Henkel), or the following general formula (E) L, CH
2) Sulfopetaine-type amphoteric surfactant represented by yCH3 (CH2)YCH3 [commercially available products include Lonzyne 12C3 (Lonza)], or imidazolinium-type amphoteric surfactant represented by the following general formula (F) agent [commercially available is Opezolin 662-N (Toho Chemical) Anone GLM
(NOF) etc. (In the formulas (B) to (F), R2 has an average number of carbon atoms of 9 to 1
The alkyl group or alkenyl group of 7 and R3 are an alkyl group or alkenyl group having an average number of carbon atoms of 10 to 18. X
is an integer of 2 to 4, y is an integer of 0 to 3, and 2 is an integer of 1 to 2. ), and one or more of these may be used arbitrarily.

The blending amount is (i) 2 to 20% by weight of the anionic surfactant based on the total amount of the surfactant base, (ii) 3 to 25% by weight of the betaine type amphoteric surfactant based on the total amount of the surfactant base.
The molar ratio of (i):(ii) is in the range of 1:10 to 4:1. When the molar ratio is outside the above range, sufficient viscosity cannot be obtained.

Furthermore, when (i) is less than 2% by weight or (ii) is less than 3% by weight, sufficient viscosity cannot be obtained, and conversely, (1)
) exceeds 20% by weight, or (ii) exceeds 25% by weight, a paste-like non-uniform substance results.

As the amino acid surfactant used in the present invention, n-acylglutamate represented by the following general formula (G) CH2CH2C00M 2 [commercially available product and pa are amidino? Examples include Ls-11 and Amidino l'c T-12 (Ajinomoto). ], or the following general formula (H) or (D) RCN CH2COOM... (H) H3 RCN CH2CH2C00M... (I) H3 N-acyl, N-alkyl amino acid salt [(
Commercially available products of H) include Sarcosinate N-30, Sarcosinate LT-30 (Nikko Chemical), Soibon S
LE (Yoken Fine Chemicals) and others. ] [As a commercial product of (■), Alaninate LT-30 (
These include Nikko Chemical) and Alanone ALE (Yoken Fufin Chemical). ] Among these, one or more types can be arbitrarily used. In the formula (G), R has an average number of carbon atoms of 8 to
20 alkyl group or alkenyl group, M represents an alkyl metal or an organic amine or a hydrogen atom, a monosalt is preferable, and in the formula (H) (I), R is an alkyl group or alkenyl having an average number of carbon atoms of 8 to 20 The group M represents an alkyl metal or an organic amine. Further, the higher fatty acid weak base salt used in the present invention can be represented by the following general formula LJ) RCOOM (J), and the weak bases include triethanolamine, 2-amino- Examples include 2-methylpropatol, 2-amino-2-methylpropanediol, lysine, arginine, and guanidine. In the formula (J), R has an average number of carbon atoms of 8 to
20 alkyl or alkenyl groups. In the present invention, one or more of these can be arbitrarily used.

Further, more preferable results can be obtained by combining an amino acid surfactant with a weak base salt of a higher fatty acid.

The blending amount of the amino acid surfactant and higher fatty acid weak base salt of the present invention is 4 to 20% by weight. When the amino acid surfactant and the higher fatty acid weak base salt are less than 4%, the sliminess improvement effect is not sufficient, and when it exceeds 20%, it is difficult to maintain a gel-like or paste-like state, and the viscosity is 200c.
ps, and it causes inconveniences such as precipitation at low temperatures,
Low-temperature stability becomes poor.

There are no particular restrictions on the production of the body cleansing composition of the present invention, and each component may be added in random order.

In addition to the above-mentioned essential components, the body cleansing composition of the present invention may optionally contain acids and alkalis as pH control components, as well as EDTA and its salts.
As malic acid and its salts and preservatives, methylparaben,
Benzoic acid and its salts can be added.

Other additives include pullulan, carboxymethyl cellulose, carboxyvinyl polymer, cationic polymer, water-soluble polymers such as aluminum magnesium silicate, polyhydric alcohol, pyrrolidone carboxylic acid, sodium pyrrolidone carboxylate, hyaluronic acid, polyoxy Moisturizing agents such as ethylene alkyl glucoside ether, lecithin, saponin, natural extracts such as aloe, quince, apricot, apricot kernel, electrolytes such as sodium chloride, potassium chloride, citric acid, fragrances, and coloring agents can be included.

Of course, these must be used under qualitative and quantitative conditions that do not impair the purpose of the present invention.

[Example] Next, the present invention will be explained in detail with reference to Examples. The present invention is not limited thereby. The blending amount is in weight%. In addition, the effectiveness was determined using the following test methods and evaluation methods.

(1) Easy to rinse face wash test with 35°C warm water on a panel of 10 people::
was conducted and compared with the material of Comparative Example 1, it was found that rinsing was easy,
Evaluation scores were given as follows: +2 for easy rinsing, +1 for easy rinsing, 0 for the same level, -11 for easy rinsing, and -2 for difficult to rinse. Judgments were made as follows based on the total score of the 10 evaluations.

20~11...0 10~1...O O~-20...× (2) Stability Inconveniences such as precipitation and separation at low temperatures (-5°C, 1 month) does not occur.

Stable......O Slightly precipitated...Δ Precipitated...× (3) Viscosity Using a single cylindrical rotational viscometer (required by Precision Industrial Research Institute),
Measured at 30'C.

[Effects of the Invention] The present invention uses a sulfate surfactant that foams quickly and has a light foam quality, and a betaine surfactant to form a gel in a specific combination area. Without sacrificing its characteristics, amino acid-based surfactants and/or
By combining higher fatty acid weak base salt soap, it was possible to obtain a body cleansing composition with improved sliminess.

It also had good skin safety, cleansing power, and foaming properties.

In general, the body cleansing composition of the present invention requires special equipment,
It does not require any steps such as heating or cooling, and can be produced only by a simple stirring operation, and in this respect it can be said to be an excellent composition.

Claims (1)

[Claims] (i) The following general formula (A) R_1O(CH_2CH_2)aSO_3M...(A
) (wherein, R represents an alkyl group or alkenyl group having an average number of carbon atoms of 8 to 20, M represents an alkali metal or an organic amine, and a represents a number of 0 to 3.) 2 to 20% by weight of one or more agents; and (ii)
One or more betaine-based amphoteric surfactants 3 to 25
(iii) one or more selected from the group consisting of amino acid surfactants and higher fatty acid weak base salts4
~20% by weight and (iv) water (i): (i
A body cleansing composition comprising: i) in a molar ratio of 1:10 to 4:1.