JPH04316510A - Shampoo composition - Google Patents

Abstract

PURPOSE:To provide a shampoo composition having excellent foamability and giving a sufficient combing property, a luster and softness to hair after the hair is washed. CONSTITUTION:A shampoo composition contains as active ingredients (A) 3-20wt.% of a betaine group-containing siloxane compound of formula I (R<1> is 1-18C substituted or non-substituted monovalent hydrocarbon group; at least one of R<2> groups is a group of formula III and the remainings are 1-18C substituted or non-substituted monovalent hydrocarbon group; R<3> is 1-10C divalent hydrocarbon group; R<4> is 1-3C alkyl, group of formula III; x, y are 1,2,3; m, n are integers of 0-1000), and (B) 0.5-3wt.%, preferably 1-2wt.%, of a quaternary ammonium salt of formula IV (one or two of R<5> to R<8> are 12-24C alkyl and the remainings are 1-3C alkyl, benzyl; X is halogen). The shampoo composition improves the luster of hair without deteriorating the hair-combing property and softness-imparting property of the cationic surfactant B, and further exhibits excellent foamability.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shampoo composition that has excellent foaming power and can improve the combability, shine and suppleness of hair after washing.

0002

[Prior art and problems to be solved by the invention] In recent years,
As consumer awareness of hair care increases, requests for hair care products are becoming more diverse. Particularly recently, hair washing products that are easy and convenient to wash and finish hair have been attracting attention. In other words, it can be said that one of the important demands is to impart sufficient combability and shine to hair simply by shampooing, and to simplify the finish of the hair.

[0003] As a technique for improving the finish of hair by shampooing, it has been disclosed to add a cationic polymer such as cationized cellulose (US Pat. No. 3,472,840) to a shampoo base material. However, when the amount of these additives is increased in order to improve the finish, stickiness occurs during rinsing.
Alternatively, the hair may become hard and the finish may deteriorate.

[0004] In order to solve these problems, it is possible to use a cationic surfactant, which is commonly used as a rinse base material. However, when these cationic surfactants are added to shampoo base materials, they form a complex, resulting in white turbidity or precipitation and phase separation, which not only improves the appearance but also reduces the ability to comb hair, which is the inherent performance of cationic surfactants. The effect of imparting ease of passage and flexibility is significantly impaired.

[0005] Therefore, the present inventors conducted extensive research in an attempt to improve the drawbacks of the above-mentioned prior art, and as a result, the surfactant disclosed in Japanese Patent Application No. 01-269897 was developed by the general formula (1) shown below. When a specific amount of the specific amphoteric surfactant represented by the formula (2) is used in combination with a specific amount of the cationic surfactant, the combability and suppleness of the hair of the specific cationic surfactant represented by the general formula (2) below can be improved. The present inventors have discovered that it is possible to obtain a shampoo that improves the shine of hair and exhibits excellent foaming properties without impairing the effect of imparting shine, leading to the completion of the present invention.

[0006] An object of the present invention is to provide a shampoo composition which has excellent foaming power and which imparts sufficient combability, shine and suppleness to hair after washing.

[0007]

[Means for solving the problem] The above purpose is achieved by the general formula (
A)

[Chemical formula 5] [However, R1 is the same or different substituted or unsubstituted monovalent hydrocarbon group having 1 to 18 carbon atoms, and R2 is one or all of the following formulas:

[Chemical formula 6] (However, R3 is a divalent hydrocarbon group having 1 to 10 carbon atoms, R
4 is an alkyl group having 1 to 3 carbon atoms or

embedded image x and y are each integers of 1 to 3. ), the rest are the same or different substituted or unsubstituted monovalent hydrocarbon groups having 1 to 18 carbon atoms, m and n are 0 to 1000
is an integer. ] 3 to 20% by weight of a betaine group-containing siloxane compound represented by the general formula (B)

[Formula 8] [However, 1 to 2 of R5, R6, R7, and R8 represent a long-chain alkyl group having 12 to 24 carbon atoms, and the remainder represents an alkyl group having 1 to 3 carbon atoms or a benzyl group, and indicates a halogen atom. ] Quaternary ammonium salt 0.
This is achieved by a shampoo composition characterized in that it contains 5 to 3% by weight as an active ingredient.

The first essential component of the shampoo composition of the present invention is an amphoteric surfactant represented by the above general formula (1), and these surfactants can be used alone or in combination of two or more.

The betaine group-containing siloxane compound represented by the above general formula (A) in the present invention can be produced, for example, as follows. That is, in a 1-liter flask equipped with a thermometer, stirrer, and reflux condenser, the following average composition formula is prepared.

400 g (0.23 mol) of a siloxane compound having
N-methylaminoethanol 169g (2.25mol)
, and 200 g of isopropanol, and heated under reflux for 6 hours.
Allowed time to react. Next, the low boiling point components in this reaction solution were distilled off under reduced pressure at 80° C./4 mmg over 4 hours. The reactant (siloxane compound) thus obtained has a viscosity of 2932 cs at 25°C, a specific gravity of 1.044, and a refractive index of 1.
．． 443, the amine equivalent weight was 392 g/mol.

Next, 200 g (0.09 mol) of the siloxane compound obtained in the above reaction, 54 g (0.46 mol) of monochloroacetic acid sodium salt dissolved in 30 g of water, and 186 g of 1,2-propylene glycol were added to 1 Pour into a liter flask, react at 10°C for 12 hours with stirring, and after removing the solvent, form the following composition formula:

A betaine group-containing siloxane compound having the formula (10)
However, m represents 11 and n represents 3).

A 0.1% aqueous solution was prepared from the siloxane compound having the above average composition formula, and the surface tension at 20° C. was measured and found to be 29.0 dyne/cm.

[0012] The above average compositional formula (where m is 11, n
A betaine group-containing siloxane compound having an average molecular weight of 1100 and an amount of betaine groups (units/molecule) of 3 is abbreviated as the compound (a) of the present invention.

[0013] Furthermore, an average molecular weight of 24 having the above composition formula
00, betaine group-containing siloxane compound with an amount of betaine groups (pieces/1 molecule) 5 (however, m represents 11, n represents 5)
was obtained by a similar manufacturing method using the corresponding siloxane compound as a raw material, and is abbreviated as the compound (b) of the present invention.

[0014] Furthermore, an average molecular weight of 92 having the above composition formula
A betaine group-containing siloxane compound (where m is 11 and n is 2) with an amount of betaine groups (pieces/1 molecule) of 0 and 2 is obtained by a similar manufacturing method using the corresponding siloxane compound as a raw material, It is abbreviated as the compound (c) of the present invention.

[0015] One or a mixture of two or more of the above compounds (a) to (c) accounts for 3 to 20% by weight of the entire composition of the present invention.
If it is less than 3% by weight, the foaming power will decrease, and if it is more than 20% by weight, the desired effect will be reduced.

The second essential component of the shampoo composition of the present invention is a cationic surfactant represented by the above general formula (B), and one or more of these can be used in combination. Specific examples include stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, behenyltrimethylammonium chloride, distearyldimethylammonium chloride, dicetyldimethylammonium chloride, dibehenyldimethylammonium chloride, and the like.

[0017] The blending amount of these ingredients is 0% of the entire composition.
．． A suitable amount is 5 to 3% by weight, preferably 1 to 2% by weight; if it is less than 0.5% by weight, the effect of imparting combability will not be achieved, and if it is more than 3% by weight, the foaming power will decrease. do.

In addition to the above-mentioned essential ingredients, the shampoo composition of the present invention can also contain ingredients commonly used in general shampoo compositions. Such components include anionic surfactants, nonionic surfactants, amphoteric surfactants, and other cationic surfactants, including water-soluble polymeric substances (including anionic, nonionic, and cationic). , sequestering agents, PH adjusters, antioxidants, ultraviolet absorbers, preservatives, bactericides, anti-dandruff agents, emulsifiers, pigments,
There are fragrances, etc., and one or more of these may be blended.

[0019]

EXAMPLES Next, the present invention will be explained in detail with reference to Examples, but the present invention is not limited thereto. In addition, the numerical values in Examples and Comparative Examples are %. Here, prior to describing the examples, the evaluation method adopted in each example will be explained.

(1) Foaming test An aqueous solution with an active agent concentration of 0.2% was prepared and tested according to the Ross Miles test method (ASTMD1178-58). In addition, the evaluation criteria were set as follows. ◎; Excellent foaming, foaming power 240ml or more ○; Good foaming, foaming power 20
0-240ml△; Foaming normal
Foaming power 160-200ml×; Poor foaming
Foaming power less than 160ml

(2)
) Combability test sample Using 1.0 g of the shampoo composition, hair bundles (5 g, 2
0cm) for 1 minute, rinsed, and then placed in a constant temperature room (
A sample hair bundle is prepared by leaving it at a temperature of 25° C. and a relative humidity of 65% for one day and drying it. On the other hand, a control hair bundle was prepared in the same manner using a lauryl ether sulfate-based general commercially available shampoo. The panelists (20 people)
In a pairwise comparison with the control, the smoothness of the comb (made of nylon) and the sensory test were evaluated. The evaluation criteria were set as follows. ◎; Combing performance is better than control ○; Combing performance is slightly better than control △; Combing performance is equal to that of control ×; Combing performance is inferior to control

(3) Effect of finish after hair washing (shininess, suppleness) Regarding the finish after washing hair in each example, the "shininess" and "flexibility" were sensually compared by a panel of 20 female experts, and the results were evaluated according to the following criteria. The evaluation was carried out. ◎; If 18 or more people answered good ○; If 14 to 17 people answered good △; If 8 to 1 people answered good
In the case of 3 people ×; If the number of people who answered good is 7 or less

Examples 1-5, Comparative Examples 1-4 Examples 1-5
In Comparative Examples 1 to 4, shampoos having the formulations shown in Table 1 were prepared, and their foaming properties, combability, suppleness, and gloss were investigated. Table 1 shows the results.

[Table 1]

Example 6 A shampoo having the formulation shown in Table 2 was prepared.

[0025]

[Table 2]

[0026] The results of examining the foaming properties, combability, suppleness, and shine of this shampoo were ◎, ◎, ◎, and ◎, respectively.

Example 7 A shampoo having the formulation shown in Table 3 was prepared.

[0028]

[Table 3]

The foaming properties, combability, suppleness, and shine of this shampoo were examined and the results were ◎, ◎, ◎, and ◎, respectively.

[0030]

As described above, it is clear that the present invention provides a shampoo composition that has excellent foaming power and can improve the combability, shine, and suppleness of hair after washing.

Claims (1)

[Claims] Claim 1: General formula (A) [Formula 1] [However, R1 is the same or different substituted or unsubstituted monovalent hydrocarbon group having 1 to 18 carbon atoms, and R2 is one or all of them represented by the following formula [ Chemical formula 2] (However, R3 is a divalent hydrocarbon group having 1 to 10 carbon atoms, R
4 is an alkyl group having 1 to 3 carbon atoms, or [Image Omitted] x and y are each an integer of 1 to 3. ), the rest are the same or different substituted or unsubstituted monovalent hydrocarbon groups having 1 to 18 carbon atoms, m and n are 0 to 1000
is an integer. 3 to 20% by weight of a betaine group-containing siloxane compound represented by the general formula (B) [wherein 1 to 2 of R5, R6, R7 and R8 are long chain alkyl having 12 to 24 carbon atoms. The remainder represents an alkyl group having 1 to 3 carbon atoms or a benzyl group, and X represents a halogen atom. ] Quaternary ammonium salt 0.
A shampoo composition characterized in that it contains 5 to 3% by weight as an active ingredient.