JPS609695B2 - Shampoo - Composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shampoo composition that causes less roughness on the hands, has excellent foaming properties, and gives suppleness to the hair.

Recently, there have been many requests in the barber and beauty industries for shampoos that are less rough on hands.

In addition, barbers and beauticians spend a lot of time in contact with shampoo solutions, so they especially want shampoos that do not cause roughness on their hands. Needless to say, in the shampoo manufacturing industry, a lot of research has been conducted on the roughness of surfactants. Alkyl sulfate ester salts, alkylbenzene sulfonates, etc. have varying degrees of
It is known to cause rough hands.

On the other hand, nonionic surfactants such as polyoxyethylene alkyl ether, lactic acid ester, and machine sugar ester are known to cause less roughness on hands; Shampoos have also been developed. However, such shampoos have the disadvantage that they are significantly inferior to shampoos containing anionic surfactants in both foaming power and detergency. Therefore, it has been considered to use an anionic surfactant and a nonionic surfactant in combination, but in this case, although foaming may be improved, the roughness of hands cannot be sufficiently improved. As a result of extensive research into shampoo compositions that are less rough on the hands, have good lather, and are easy to clean, the inventor unexpectedly found that 3 to 3% by weight of an anionic surfactant and 4% by weight of an anionic surfactant. The mechanism is not fully elucidated when combining 0.1% or 5% by weight of a nitrogen-containing polymer with 1 or 2% by weight of lactic acid ester and/or tung sugar ester represented by the general formula described below. However, it has been discovered that a shampoo composition having the desired performance can be obtained through the interaction of the three components, and the invention can be completed based on this knowledge. The components will be explained in detail below.

Typical examples of anionic surfactants are listed below, and each can be used alone or in combination of two or more. Practically, the preferred blending ratio is 3 to 30% (by weight). be.

Beef tallow fatty acids, mustard fat fatty acids, alkali metal salts of side-chain higher fatty acids, and alkanolamine salts.

Natural lauryl alcohol 3 mole ethoxy sulfate,
Oxo method synthesis C,. ~C,5 aliphatic alcohol 3 mole ethoxy sulfate ester "Oxo method synthesis C,2~C,3 aliphatic alcohol 1 mole ethoxy sulfate ester, C,2~
Alkali metal salts, alkali metal salts, and alkanolamine salts of various esters, such as C,3 aliphatic alcohol sulfate esters. C,2-C,4-alpha olefin, C,2-C,6 vinylidene offiso, C,2-C,6 inner obtained by wax Kratkisog method, Ziegler catalyst ethylene polymerization method, improved methods of these Alka metal, alkali metal salts, and alkanolamine salts of anionic surfactants obtained by sulfonating olefins with sulfur trioxide, etc., and then hydrolyzing them. Alka metal salt, alkali metal salt, alkanolamine salt of C,2-C,4 acylamidopolyglycol (3-8 mol) sulfate ester. o Quaternary nitrogen-containing polymers Mainly polymers JR-125, JR-400, JR-3M
(all manufactured by Union Carbide).
grade nitrogen-containing cellulose ether derivative, Sumifloc (
Nalco 6, a quaternary nitrogen-containing poly(triacylaminoethyl methacrylate) derivative represented by Sumitomo Chemical Co., Ltd.
Gaffcoat #755 (manufactured by Gulf Co., Ltd.), a water-strengthening thionic polymer of tetraethylethylenebetamine and epichlorohydrin represented by 00 (manufactured by Nalco Chemical Co., Ltd.)
Examples include quaternary nitrogen-containing polyvinylpyrrolidone, typified by It is practically preferable to keep the content within the range of .1 to 5%.

If it is less than 0.1%, the effect of suppressing rough hands is insufficient;
%, this effect will not be proportional to the increased amount, and the low-temperature stability will be adversely affected.

o Lactic acid ester, Kuma sugar ester The lactic acid ester referred to here is represented by the general formula, where R is a straight chain or branched saturated hydrocarbon group having 11 to 14 carbon atoms, and n is 2 to 14 carbon atoms. Indicates an integer of 10.

In addition, tung sugar ester is represented by the general formula, where R', R', and R are C,2 to C,3 acyl groups or hydrogen, which may be the same or different. , are essentially mono-, di-, and triacyl compounds.

In this invention, in addition to each of lactic acid ester and tung sugar ester alone, a mixture of both can be blended.
% as the lower limit, and the upper limit is preferably set at 20%, above which foaming will be suppressed.

In addition to the above-mentioned essential ingredients, the shampoo composition of the present invention contains commonly used ingredients as necessary, such as commonly used amphoteric active agents, fragrances, and pigments. .

First, the shampoo composition of the present invention has the effect of significantly reducing rough hands, and has excellent foaming properties.
It also has the effect of adding suppleness to hair, and while meeting the needs of the barber and beauty industry, it also makes a significant contribution to general users.

Hereinafter, this invention will be explained in more detail with reference to Examples.

In addition, each test method performed in the Example prior to this will be introduced below.

{1) Fill a container with a diameter of 30cm and a depth of 10cm with the sample liquid from rough hand test 2,
While keeping the temperature of the solution at 4000, immerse each hand up to the wrist in a different test solution. After 30 minutes, wash your hands with water and complete this test.
This was done once a day for two consecutive days.

During the test, the application of external preparations was prohibited, and the condition of the skin was observed the day after the 2-day immersion. For the evaluation, a 1% aqueous solution of low sugar ester was compared as a control, and cases where it was equivalent to or superior to this were marked as ○, and cases where it was worse were marked as ×.

{2' Foaming test It was measured at 25 qo based on the Rothsmile method.

{3} Hair finish length 15 using a test solution with a concentration of 6%
A panel of 50 women evaluated the feel of human hair after washing and natural drying, comparing it with the feel of hair treated with a commercially available shampoo.

The evaluation criteria are: x means no significant difference in suppleness compared to human hair treated with a commercially available shampoo, △ means slightly good, and 0 means good. Examples 1-7, Comparative Examples 1-4 Table 1. Eleven types of shampoo compositions were prepared according to the blending ratios shown below, and their performance was tested.

As is clear from the same table, Examples 1 to 7 satisfy the foaming property, no roughness on hands, and the finish of the hair, unlike Comparative Examples 1 to 4, which do not meet the conditions of the present invention.

Table 1 Note) *1: Sodium salt of CI2-CI3 alkyl ethoxy 3 molar sulfate ester *2: Polymer JR-400*
3: 3 mol lactic acid ester of saturated fatty acids from C.2 to CI3
As shown in Figure 2, five types of shampoo compositions were prepared by changing the types of anionic surfactants, quaternary nitrogen-containing polymers, etc., but the shampoo compositions that met the conditions of this invention had good foaming properties and no roughness on hands. , it is clear that all aspects of hair finish are satisfied.

Table 2

Claims (1)

[Scope of Claims] 1 3 to 30% by weight of an anionic surfactant, 0.1 to 5% by weight of a quaternary nitrogen-containing polymer, and lactic acid ester and/or sucrose ester represented by the following general formula 1
A shampoo composition characterized in that it contains from 20% by weight as an essential component. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (In the formula, R is a straight or branched saturated hydrocarbon group having 11 to 14 carbon atoms, n
represents an integer from 2 to 10. ).