JPH04182417A - Pearlescent shampoo composition - Google Patents

Abstract

PURPOSE:To obtain a pearlescent shampoo composition effective for imparting hair with excellent conditioning property and resistant to the separation of pearlescent component by adding a specific amount of a dimethylsilicone emulsion and hardened castor oil. CONSTITUTION:The objective composition is produced by compounding 0.01-1wt.% (in terms of dimethylsilicone) of an emulsion of a dimethylsilicone of formula (R1 and R2 are methyl or H; n is 4,000-9,000) and 0.01-0.5wt.% (preferably 0.05-0.3wt.%) of hardened castor oil. The compound of formula is e.g. Toshiba Silicone TSE-200, the hardened castor oil has an acid value of <=2 and the pearlescent component is e.g. ethylene glycol distearate.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a shampoo composition, and more specifically, to a shampoo composition that provides excellent hair conditioning properties (combability, smooth feel, shine, hair manageability, etc.). The present invention relates to a pearl-like shampoo composition.

Prior Art and Problems It has been well known that polymeric dimethyl silicone is effective in preventing hair damage caused by hair washing.

However, the high molecular weight dimethyl silicone is insoluble in water and has a lower specific gravity than water, so it is difficult to stably blend it. Therefore, a method of stabilizing polymer dimethyl silicone in combination with xanthan gum (US Pat. No. 47284)
No. 58) has been proposed, but this method significantly inhibits the foaming power, and because the particle size of the silicone in the shampoo is large, some of the high molecular weight dimethyl silicone is
There is a problem that it is liberated at a temperature of 50°C.

In order to solve this problem, a technology for emulsifying high-molecular dimethyl silicone has recently been developed (Japanese Patent Laid-Open No. 63
-183517).

On the other hand, recently, consumer awareness regarding hair damage has progressed.
With the rise in hair care awareness, demand for pearl-like white hairs that have a crowbar-like luster with ethylene glycol stearate, etc. is increasing. Therefore, if a large amount of the emulsion of dimethyl silicone obtained by the above technique is blended, especially if the amount exceeds 0.01% by weight in terms of dimethyl silicone, there is a problem that separation of burrs occurs.

Problems to be Solved by the Invention The present inventors have conducted extensive research in order to prevent pearl separation in a pearl-like shampoo composition containing a large amount of an emulsion of high-molecular dimethyl silicone. As a result, surprisingly, by using a specific amount of hydrogenated human oil,
It has been found that pearl separation can be effectively prevented.

Means to solve problems The present invention (1) Equation.

CHs 7 CHs l CH3 [wherein R7 and R2 are CH3 or H, n is 400
means an integer from 0 to 9000], the emulsion of dimethyl silicone is 0.0 in terms of dimethyl silicone.
and (II) 0.01 to 0.5% by weight of hydrogenated human oil.

Typical dimethyl silicones represented by formula [II] used in the shampoo composition of the present invention include, for example,
Examples include Toshiba Noricone TSE-200, TSE-200A, etc., which may be used alone or in combination of two or more, and 0.01 to 1% by weight, preferably 0.1 to 1% by weight based on the total amount of the shampoo composition. % blend. Compounding amount is 001% by weight
If the amount is less, the hair conditioning properties will not be sufficiently imparted to the hair. On the other hand, if the blending amount exceeds 1% by weight, foaming properties will be impaired. In the present invention, this dimethyl silicone is blended in the form of an emulsion. That is, an aqueous mixture of a water-soluble polyhydric alcohol and a surfactant is mixed and emulsified with dimethyl silicone of formula [II and, if desired, an oil phase consisting of other oily components. Examples of water-soluble polyhydric alcohols include those that have two or more hydroxyl groups in the molecule and are transparently soluble in water, such as propylene glycol, 1,3-butylene glycol,
Examples include isoprene glycol, ethylene glycol, glycerin, sorbitol, quinolitol, dipropylene glycol, ethylene glycol, glycerin, polyethylene glycol, polyglycerin, ethylene glycol monoethyl ether, ethylene glycol dimethyl ether, and the like. Examples of surfactants include anionic surfactants such as lauryl sulfate, linear alkylbenzene sulfonate, polyoxyethylene lauryl ether sulfate, α-olefin sulfonate, polyoxyethylene lauryl sulfosuccinate, and stearyl trimethyl. Cationic surfactants such as ammonium salt, cetyltrimethylammonium salt, pennrutrimethylammonium salt, dicetylonmethylammonium salt, dibenzyldimethylammonium salt, etc., lauryl betaine, laurylamide betaine, imidazolinium surfactant, etc. Nonionic surfactants such as amphoteric surfactants, fatty acid glycerin ethers, sorbitan fatty acid esters, saccharide fatty acid esters, polyoxyethylene alkyl ethers, pluronic type surfactants, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, etc. Examples include activators. Oily components that may be added to the oil phase include, in addition to the formula [I] dimethyl silicone, low molecular weight dimethyl silicone, liquid paraffin, -
Examples include alcohol, methylphenyl silicone, squalene, squalane, fatty acid ester oil, polyether-modified silicone, liquid triglyceride, cyclic silicone, lanolin and its derivatives. these are,
Usually 10 to 90% by weight of oil phase, 0 water-soluble polyhydric alcohol
．． An emulsion is prepared by using 1 to 5% by weight of surfactant, 05 to 10% by weight of surfactant, and the balance being water. The blending temperature of such dimethyl silicone emulsion is preferably 60° C. or lower, more preferably 45° C. or lower; above this temperature, the emulsification is destroyed and the stable blending of silicone is affected.

The hydrogenated human oil used is a known one with an acid value of 2 or less, and contains OO1 to 0.5% by weight based on the total amount of the shampoo composition.
, preferably in an amount of 0.005 to 0.03% by weight. Blend amount is 0
．． If it is less than 0.01% by weight, the effect of preventing separation of pearls cannot be obtained, and if it exceeds 0.05% by weight, fluidity will be lost at 5° C. or lower, which is not preferable.

Examples of the pearl component include ethylene glycol stearate, triethylene glycol distearate, palmitic acid monoethanolamide, and the like.

The pearl-like shampoo composition of the present invention can be produced by mixing and stirring desired components in a conventional manner. In addition, if necessary, the Nyanpu composition of the present invention may contain other fragrances, colorants, etc., to the extent that they do not impair its performance.
Additives such as preservatives and anionic surfactants may be added.

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

Examples 1 to 5 and Comparative Examples 1 to 9 Shampoo compositions were obtained by mixing and stirring the components shown in Table 1 below. Using these, the following items were evaluated. The results are shown in Table 1.

(Evaluation method) The test samples were evaluated in the following manner.

A 1% aqueous solution 2001Z of a foaming shampoo composition was placed in a cylinder, oleic acid 4ρ was added thereto, and the mixture was kept in a constant temperature bath (40°C). 5 at this temperature and rotation speed of 150 Orpm.
The mixture was stirred using a blade propeller for a minute. The amount of foam was measured 30 seconds after the stirring was stopped, and evaluated according to the following criteria.

O1 bubble volume 500 ml or more ×: bubble volume less than 50 (bj!) Appearance stability: The sample was left at 55° C. for one month, and its appearance was visually evaluated.

O: No change in appearance ×: Change in appearance Usage feeling: Sensory evaluation was performed by five expert panelists according to the half-head method. The feeling after drying is 3 at 20℃ and 60RH%.
This was done after resting for more than 0 minutes. Note that the shampoo composition of Example 3 was used as a control product.

○ - 3 or more people evaluated the same or better than the control product ×: 2 or less people evaluated the same or better than the control product Overall evaluation: ○ - All evaluations were ○ ×: Few (one or more evaluations were ×) Effects The shampoo composition of the present invention imparts excellent hair conditioning properties to hair and effectively prevents pearl separation.

Claims (1)

[Claims] (1) (i) Formula: ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [I] [In the formula, R_1 and R_2 are methyl groups or hydrogen, n
means an integer from 4000 to 9000], 0.01 to 1% by weight in terms of dimethylsilicone, and (ii) 0.01 to 0.5% by weight of hydrogenated castor oil. A pearl-like shampoo composition characterized by: