JPS5958100A - Body liquid detergent - 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 The present invention relates to a liquid cleansing agent for the body, such as a so-called body shampoo.

Solid soaps have been widely used for body washing. Cosmetic soaps have a good feeling of use with little sliminess and are easily washed off, making them extremely suitable for body cleansing. However, cosmetic soaps have the disadvantage that as they are used, their lather quality deteriorates, cracks occur, and they become soggy. In order to solve this problem, liquid soaps have been proposed, but none have been found to be fully satisfactory, as the soap has poor solubility, crystallizes at low temperatures, and takes on a gelatinous state at high temperatures. Also, soap is highly alkaline,
From this point, the skin surface P■1 becomes too alkaline,
In order to overcome this problem, mild soaps such as amino acid soap and triethanol soap have been developed. As liquid body cleansers, so-called body shampoos containing anionic surfactants as the main ingredients have been developed, but although these have good foaming and solubility at low temperatures, they are not slippery when used. Toilet soaps are not widely accepted because they are strong and do not lather easily.

In view of these circumstances, the present inventors have conducted extensive studies in order to eliminate the drawbacks of body cleansers whose main ingredients are soap and anionic activators, and to obtain body cleansers that take advantage of the advantages of both. As a result of repeated research, it was discovered that the objective could be achieved by using a specific combination of a certain type of soap and an anionic or amphoteric surfactant, leading to the completion of the present invention.

That is, the present invention provides the following: A, a mixture of potassium coconut oil fatty acid and potassium oleate (hereinafter referred to as component A), formula 80: % formula % () (wherein k is coconut oil fatty acid (general number), C8 ~ Sodium polyoxyethylene alkyl ether sulfate, represented by a hydrocarbon group derived from C□4 acid as the main component, n means 1 to 3), formula: C, same as above) Sodium coconut oil fatty acid methyltauride and N-(3-dodecanoylamidopropyl)-N,N-
One or more surfactants selected from the group consisting of dimethylammoniocarboxymethylbetaine (hereinafter referred to as component B), and formula 6: % formula % () In formula C, 1ζ is the same as above. ) Yashiura fatty acid jetanolamide and polyoxyethylene coconut oil fatty e monoethanolamide represented by the formula: % formula % () 0 where k is the same as above and n means 1 to 9) The present invention provides a liquid body cleansing agent containing one or more surfactants (hereinafter referred to as component C) selected from the group consisting of: The cleaning agent of the present invention has a good feeling of use with less sliminess, has good foaming properties, is easy to wash off, and has little irritation to the skin.
It has good solubility at low temperatures and exhibits excellent performance as a liquid body cleansing agent.

Next, the results of testing the relationship between the blending ratio of the components A to C and the performance of the cleaning agent will be shown.

(1) Mixing ratio of potassium coconut oil fatty acid and potassium oleate in component A In the following basic formulation, the ratio of potassium coconut oil fatty acid and potassium oleate was variously changed, and each component was mixed according to a conventional method. A cleaning agent was prepared.

Ingredients Weight %A
Acid component 10. O B component (polyoxyethylene (3) alkyd (III)
) 4.0 Purified water
The remaining detergent obtained was evaluated for foaming, solubility at low temperature, and properties as described above.

Foaming: The foam height of a 0.5% aqueous solution of the detergent was measured by the Ross Miles method, and evaluated based on the sticking standard.

L-)-120rrtn"2, △-100~120
rrtn, ×... Solubility knee at low temperature of 100 ml or more The state of dissolution at 5° C. was observed and evaluated by the following group L.

○...Transparent for more than 10 days, △...Transparent for 2-10 days,
x: Within 2 days Cloudiness: Viscosity was measured and evaluated according to the following criteria.

○...100-2000Cp, △...50-100
cp.

×...50 cp or less or 2000 cp or more The results are shown in Table 1.

Table 1 Note) The numerical values represent the ratio of each potash soap when the blending amount of component A is 10.

As shown in Table 1, potassium coconut oil fatty acid or potassium oleate cannot provide sufficient performance when used alone, and the ratio of the two is between 3nia and 6:4, preferably between 3nia and 5:5. Good performance is exhibited.

(2) Mixing ratio of component A and component B Prepare various body cleansers according to the basic formulation in (1) above.Component A - mixture of equal amounts of potassium coconut oil fatty acid and potassium oleate, component A and component B. -20% formulation), its feeling of use and skin pr1 recovery ability were evaluated as follows.

Feeling of use: The slipperiness when actually used was evaluated based on the following criteria.

○...No sliminess, △...slightly slimy, ×...slimy or quite a bit.Skin pH recovery ability: Recovery of skin pH after washing by pI (measured with a meter, normal cosmetic soap) It was compared with the recovery after washing and evaluated based on the criteria of sticking.

0...Recovery is clearly good, △...Recovery is fast, ×
...Table 2 shows the results that the recovery was at the same level.

Note) Values represent the ratio of each component when the blending amount of component A and component B is 10.

As shown in Table 2, sufficient performance cannot be obtained even if the A component and the 13 component 0 deviation are missing, and the ratio power of both (4:6 to 7:
3. Preferably, good performance is exhibited with a ratio of 5:5 to 6:4.

(3) Selection of Component B According to the basic formulation in (1) above, prepare various body cleansers by using 1 yen 11) and various surfactants similar to Component A. (mixture of equal amounts of potassium coconut oil fatty acid and oleic acid, potassium phosphate), and its performance was evaluated.

The results are shown in Table 3.

Table 3 Note) Foam stability was evaluated as follows based on the foam height after 5 minutes using the Ross Miles method.

○: Change within 15% of initial bubble height △: -5 to -1 OtfD change with respect to initial bubble height ×: Change of 10% or more with respect to the initial foam height Other evaluations are the same as in Tables 1 and 2.

As shown in Table 3, the surfactant described above as component B exhibits specific (excellent) performance.

(4) Influence of C component According to the basic prescription in +11 above, the C component is expressed by the formula (
Using the surfactants 1) and (IV) (n = 5), various body cleansers were prepared [component A - mixture of Yasshiura fatty acid potassium and potassium oleate]
, and evaluated its performance.

The results are shown in Table 4.

Table 4 Note) Properties were evaluated based on viscosity as indicated.

◎・500~1500Cp10...1oo~5゜Qc
p or 1500 to 2000 cp Solubility was evaluated as follows.

◎...Transparent for more than 15 days at -5℃, 1 at 0...-5℃
Transparency for 0 to 15 days and other evaluations are the same as in Tables 1 to 3.

As shown in Table 4, the performance of the detergent is significantly improved by incorporating component C.

Thus, the body cleansing agent of the present invention basically comprises the above-mentioned A.
This is a liquid cleaning agent made by dispersing and dissolving component C in water.

As shown in the above test results, as the component A, a mixture of potassium Yashiura fatty acid and potassium oleate in a weight ratio of 3 to 6:4, preferably 3 to 5:5 is used. In addition, the weight ratio of A component:B component is 4=6 to 7:3,
Preferably, it is blended into the cleaning agent in a ratio of 5:5 to 6:4.

Component B includes sodium polyoxyethylene alkyl ether sulfate of formula (1), sodium coconut fatty acid methyltauride of formula (n), N-(3-dodecanoylamide propyl) + N,N-dimethylammoniocarboxy Methylbetaine alone or two or more of these
Blend the two together. The mixing ratio when used together is not particularly limited. The A component and the B component are blended so that the total amount is 18 to 30% (by weight, the same applies hereinafter) to the detergent. If it is less than 18%, foaming will not be sufficient, and if it exceeds 30%, the viscosity will become too high.

As component C, Yashiura fatty acid jetanolamide of the formula (]'') and polyoxyethylene coconut oil fatty acid monoethanolamide of the formula (IV) are blended alone or in combination of two or more of these. There is no particular limitation on the mixing ratio in the case where component C is
It is preferable to mix it in an amount of about 5%.

The liquid body cleansing agent of the present invention can be produced by dispersing and dissolving components A to C in water according to a conventional method, and other additives such as fragrances and colorants may be added as desired.

Next, the present invention will be explained in more detail with reference to Examples.

Example 1 Body shampoo ingredients Heavy ■ Potassium oleate 9.0 Yashiura fatty acid potassium 7.0 Formula (I)
surfactant (n=3) 10.0 formula (J'
) surfactant 1 agent 2.0 formula (1
v) Surfactant (n = 5) 1.0 Disodium edetate 0.1 Purified water 70.9 These ingredients were mixed to obtain a body shampoo.

Table 5 shows the results of comparing the performance of the obtained body shampoo with commercially available body shampoos (main ingredients: sodium alkyl sulfate and coconut oil fatty acid jetanolamide) and liquid soap (main ingredients: potassium palm fatty acids). show.

Table 5 Note) Each evaluation is the same as above.

In addition, the degree of skin pI-1 recovery after washing was measured using a commercially available cosmetic stone. Table 6 shows the results of comparison with sodium fatty acids).

Table 6 Note: The test subject was a female (23 years old), average of three measurements Example 2 Ingredients of liquid detergent for hand washing Weight % Potassium oleate 5.0 Coconut oil fatty acid potassium 5.0 Formula (I)
Surfactant (n = 3) 10.0 formula (■
Surfactant of [) 1,0 formula (r
V) Surfactant (Rho 5) 1.0 Disodium edetate 0.1 Purified water
77.9 A liquid detergent for hand washing was obtained by mixing these components.

Example 3 Body shampoo ingredients Weight %
Potassium oleate '(0 Coconut oil fatty acid potassium 6.0 formula (11
) (7) Surfactant (n=3) 10.0 Surfactant of formula (Iff) 1.0
Surfactant of formula (IV) (n=10) 2.
0 Edetate disodium 0.1
Purified water 72.9 These ingredients were mixed to obtain a body shampoo.

Example 4 Body shampoo ingredients Weight %
Potassium oleate 8,0 Coconut oil fatty acid potassium 7,0N-
(3-dodecanoylamidopropyl)-N,N-dimethylammoniocarboxymethylbetaine
12.0 Surfactant of formula (11)
4.0 Edetate disodium
0.1 Purified water 68.9 These ingredients were mixed to obtain a body shampoo.

Example 5 Liquid detergent components for hand washing Potassium heavy B oleate 6.0 Potassium coconut oil fatty acid 4.0 Surfactant of formula (I) (n = 2) 8.0 Formula (m)
Surfactant of formula 2.0 (IV)
surfactant (n=lO) 2,0 edetate disodium 0.1 purified water
77.9 A liquid detergent for hand washing was obtained by mixing these components.

Patent applicant Sunstar Co., Ltd.

Claims (1)

[Claims] fl) (A) Mixture of potassium coconut oil fatty acid and potassium oleate, (13) Formula: % formula % c In the formula, k is a hydrocarbon group derived from coconut oil fatty acid, and n is 1 to
Sodium polyoxyethylene alkyl ether sulfate, represented by the formula: % formula % C, in which R is the same as above) dodecanoylamide propyl)-N, N
- one or more surfactants selected from the group consisting of dimethylammoniocarboxymethylbetaine, and coconut oil represented by (q formula: % formula %) 0 where R is the same as above) 1 selected from the group consisting of fatty acid jetanolamide and polyoxyethylene coconut oil fatty acid monoethanolamide represented by the formula: % formula %) (wherein k is the same as above, and n means 1 to 9) A liquid cleansing agent for the body, characterized in that it contains one or more surfactants.