JP2588870B2 - Detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition,
More specifically, containing a specific spherical fine particle inorganic pigment, and by the use of fatty acid ethylene glycol ester,
Excellent stability, excellent physical (mechanical) detergency, no irritation and damage to the skin, less slimy after washing, and excellent usability that gives a refreshing wash Composition.

[0002]

2. Description of the Related Art In recent years, consumers' awareness of cleanliness has been improving year by year, and cleanliness is a fundamental aspect of daily life. Functions required for detergents such as body detergents and facial cleansers are as follows: First, the basic functions of detergents include extrinsic dirt such as dust and microorganisms (germs), sebum, sweat, and dead skin cells. It is a function to wash and remove intrinsic dirt. Next, from the viewpoint that the skin performs various physiological actions as one organ of ecology, it is required that the skin does not inhibit the physiological function and does not damage the skin. Furthermore, the feeling of use after washing is also an important function, and in recent years, there has been a strong demand for a refreshing finish with no slimy skin, especially after washing.

[0003] For the purpose of improving such functions and feeling of use, there has been proposed a detergent containing a scrubbing agent, a clay mineral, a polymer compound and the like. For example, (1) a scrub skin cleanser containing 2.5 to 20% by weight of pearl and / or nacre having a particle size of 100 to 1000 μm (JP-A-56-13152). (2)
A detergent containing montmorillonite as a clay mineral (JP-A-1-190622). (3) The average particle size is 10
A detergent composition containing polymer particles having a specific elastic modulus of 0 to 1000 μm (JP-A-2-151693) is disclosed.

[0004]

However, the above-mentioned cleansing agent (1) is not sufficient as a skin cleansing agent because it has a large particle size and is indefinite in shape, and has a risk of damaging the skin surface because it is hard. When the cleaning agent of (2) is applied to a cleaning agent for higher fatty acid soap or the like, precipitation of montmorillonite occurs, and the feeling of stickiness is not sufficient. Further, although the detergent composition of (3) is excellent in the cleaning effect, the effect is not sufficient in the usability such as refreshing after washing, and thus the cleaning composition is not sufficiently satisfactory.

[0005] As described above, the conventional techniques are incompatible with detergency, hypoallergenicity, and feeling of use (there is no slimming and refreshing washing), and in order to achieve any of the objects, There is a problem that the other effect must be sacrificed, and a problem of stability such as sedimentation or aggregation, and a solution to the problem has been strongly desired.

[0006]

In view of such circumstances, the present inventors have conducted intensive studies to develop a detergent composition which has improved the problems and disadvantages of the prior art, and as a result, have found that a specific particle size and oil absorption have been obtained. By blending a large amount of spherical fine particle inorganic pigment into the detergent, it has a high cleaning effect, does not cause irritation or damage to the skin, and has a feeling of use (less slimy after washing, refreshing It has been found that a detergent having excellent stability can be obtained by using a fatty acid ethylene glycol ester, and the present invention has been completed.

That is, according to the present invention, the average particle size is 0.1 to
An object of the present invention is to provide a detergent composition comprising a spherical fine particle inorganic pigment having a thickness of 100 μm and an oil absorption of 0.5 ml / g or more and a fatty acid ethylene glycol ester.

Hereinafter, the present invention will be described in detail. Spherical fine particle inorganic pigment compounded in the present invention, silicic anhydride,
Magnesium silicate, zirconium oxide, magnesium oxide, zinc oxide, titanium oxide, and their surface modification or chemical treatment to have porosity, and further control of particle size to increase oil absorption, oil absorption / water absorption ability And oil with improved oil absorption selectivity. The shape is spherical or true spherical. Silicic anhydride is preferable among the above-mentioned spherical fine particle inorganic pigments, and particularly, spherical porous silica and hollow porous spherical silica having a hollow central portion are preferable.

The average particle diameter of the spherical fine particle inorganic pigment is 0.1 to
The particles are 100 μm in size, preferably 1 to 20 μm. If it is less than 0.1 μm, a sufficient feeling of use cannot be obtained, and if it exceeds 100 μm, uncomfortable feeling, damage to the skin, etc. are exhibited, which is not preferable. The oil absorption of the spherical fine particle inorganic pigment is 0.5 ml / g or more, preferably 1.0 m / g.
1 / g or more. If it is less than 0.5 ml / g, the specific gravity of the spherical fine-particle inorganic pigment increases, and separation, sedimentation, and the like occur in the detergent composition, which is not preferable.

The amount of the spherical fine particle inorganic pigment used in the present invention can be appropriately selected according to the actual dosage form. However, the amount is preferably 0% based on the total weight of the components (the weight of the composition) in the detergent composition. 0.01 to 10% by weight, more preferably 0.1 to 5% by weight. 0.01% by weight
If the amount is smaller, the desired effect tends to be hardly exhibited, and considering the stability and feeling in use in the formulation system, the content is preferably 10% by weight or less.

In the present invention, the oil absorption of the spherical fine particle inorganic pigment is determined by using squalene and JIS K 5101 (197).
8 years) in accordance with the method for measuring the oil absorption of a pigment specified in (8). That is, 1 g of powder was taken on a glass plate, and kneaded with a spatula while squalene was added dropwise little by little. When the powder became a paste as a whole, the end point was 1 g of powder.
The required amount of squalene (ml) per unit is taken as the oil absorption. J
In the IS method, boiled linseed oil is used as the oil, but in this method, squalene is used because of its similarity to sebum.

The fatty acid ethylene glycol ester used in the present invention is an ethylene glycol ester of a fatty acid having about 16 to about 22 carbon atoms, for example, ethylene glycol distearate, ethylene glycol monostearate, ethylene glycol dipalmitate, ethylene glycol. Examples thereof include a 5/5 mixture of glycol monostearate and ethylene glycol distearate, and preferred are ethylene glycol distearate and ethylene glycol monostearate. The fatty acid ethylene glycol ester helps prevent the spherical fine particle inorganic pigment from separating and aggregating, and can give the product a pearly luster.

The amount of the fatty acid ethylene glycol ester to be used in the present invention can be appropriately selected according to the actual dosage form. However, the amount of the fatty acid ethylene glycol ester is set to 0 based on the total weight of the components (the weight of the composition) in the detergent composition. 0.1 to 10.0% by weight, more preferably 0.5 to 5.0% by weight. If the amount is less than 0.1% by weight, it is difficult to impart sufficient pearly luster and static pearliness to the composition. If the amount is more than 10% by weight, not only the composition tends to gel, but also a stable pearly luster is obtained. Tends to be unable to do so.

The main surfactant used in the cleaning composition of the present invention is not particularly limited. Examples thereof include fatty acid soap, carboxylic acid type activator, alkyl sulfate ester type activator, sulfosuccinate type activator, taurate type, and acyl type. Examples include acylated amino acid-type activators such as sarcosine and acyl-β-alanine, anionic activators such as phosphate ester activators, nonionic surfactants such as alkyl saccharides and EO addition type surfactants. . Among them, fatty acid soaps, carboxylic acid-type activators, acylated amino acid-type activators, etc. are preferable since they do not get wet after use and cause less skin irritation.

Although the amount of the main surfactant is not particularly limited, it is 60 to 90% when the detergent is solid, 30 to 70% when it is paste, 20 to 70% when it is gel, and 10 to 70% when it is liquid. It is preferable to mix it by 60%.

In addition to the main surfactant, it is also preferable to use an amine oxide, a fatty acid diethanolamide, an imidazoline type or a betaine type amphoteric surfactant in order to improve foaming properties and provide appropriate viscosity.

In addition to the above components, components commonly used in detergents such as wetting agents, coloring agents, preservatives, feel improvers, fragrances, bactericides, anti-inflammatory agents, ultraviolet absorbers and the like can be used to effect the present invention. It can be used within a range not to impair.

The detergent composition of the present invention can be widely used, for example, as a whole body cleansing agent, a skin cleansing agent such as a solid soap, a face wash, a dishwashing agent, a contact lens cleaning agent, and the like.

[0019]

Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples. In addition, the compounding amount is weight%. Prior to the examples, an evaluation method will be described.

(1) Measurement of the cleaning effect An artificial sebum containing 2% carbon black was applied to the measurement site on the left forearm, dried for a certain period of time, and then the upper dirt was wiped off so that the dirt remained in the skin groove. I made it. Next, using a color difference meter (manufactured by Minolta), the lightness (L
₂ ) is measured, and at the same time, the brightness (L ₁ ) of the uncoated portion is measured. Next, a cleaning treatment was performed with each cleaning agent. After the washing treatment, the left forearm is dried, and the lightness (L ₃ ) of the treated part is measured again. The cleaning rate was calculated from the lightness values obtained in these manners according to the following equation.

Washing rate (%) = 100 × (L ₂ −L ₃ ) /
(L ₂ -L ₁₎

(2) Measurement of irritation and damage to the skin For 10 sensory panelists, a specific portion of the lower left arm was exactly 60 seconds with a small wet sponge containing 1.0 g of a cleaning agent. Wash. Next, the washing unit is dried,
After performing this washing treatment three times a day for a total of 15 times, each test site was visually observed by a skilled examiner and evaluated according to the criteria in Table 1, and the average value of the scores of the results of 10 sensory panelists was calculated. Was evaluated.

[0023]

[Table 1]

(3) Evaluation of feeling of use Twenty professional beauty technicians were allowed to use each cleaning agent.
The sliminess and freshness of the skin after washing were evaluated by a 5-point evaluation according to the criteria in Table 2, and the average value was calculated. The average value was indicated by the symbols ○, ×, and Δ according to the criteria in Table 3. .

[0025]

[Table 2]

[0026]

[Table 3]

(4) Evaluation of stability Each of the cleaning agents contained in the transparent container was stored in a constant temperature bath at 40 ° C. for 3 months, and the appearance of the sample was visually observed. Was evaluated.

[0028]

[Table 4]

Examples 1 to 3 and Comparative Examples 1 to 3 Table 5 shows the formulations and evaluation results of body shampoos prepared by a conventional method. As is apparent from Table 5, Examples 1 to 3 of the present invention are superior to Comparative Examples 1 to 3 in terms of cleaning effect, skin irritation, feeling of use (slimy, refreshing), and stability. Was.

[0030]

[Table 5]

Example 4 A soap having the following composition was produced by a conventional method. (1) Spherical porous silica 5.0 Average particle size: 5 μm Oil absorption: 2.0 / g (2) Ethylene glycol monostearate 5.0 (3) Sodium tallow fatty acid 82.0 (4) Dibutylhydroxytoluene 0 .1 (5) Cetanol 5.0 (6) Fragrance trace (7) Dye trace (8) Purified water balance 精製合計 Total 100.0

Example 5 A facial cleansing foam having the following composition was produced by a conventional method. (1) Spherical porous silica 3.0 Average particle size: 5 μm Oil absorption: 2.0 / g (2) Ethylene glycol monostearate 3.0 (3) Potassium laurate 40.0 (4) Glycerin 8.0 (5) Sodium N-acylglutamate 3.0 (6) Trace amount of fragrance (7) Sodium benzoate 0.1 (8) Purified water balance ───────────────────合計 Total 100.0

Example 6 A liquid soap to be used at the time of shower having the following composition was produced by a conventional method. (1) Spherical porous silica 1.0 Average particle size: 5 μm Oil absorption: 2.0 / g (2) Ethylene glycol distearate 1.0 (3) Triethanolamine laurate 20.0 (4) Myristic acid Triethanolamine 5.0 (5) Imidazolium betaine 3.0 (6) Propylene glycol 10.0 (7) Preservative 0.3 (8) Trace amount of fragrance (9) Trace amount of pigment (10) Purified water balance ───合計 Total 100.0

Example 7 A body shampoo having the following composition was produced by a conventional method. (1) Spherical porous silica 0.5 Average particle size: 5 μm Oil absorption: 2.0 / g (2) Ethylene glycol distearate 0.5 (3) Potassium laurate 15.0 (4) Potassium myristate 10 5.0 (5) Cocoamide betaine 5.0 (6) Coconut oil fatty acid diethanolamide 5.0 (7) Hydroxyethylcellulose 0.1 (8) Preservative 0.3 (9) Fragrance trace (10) Pigment trace (11) ) Purified water balance ────────────────────────── Total 100.0

The cleaning agents of Examples 4 to 7 were all good in terms of cleaning effect, skin irritation, feeling of use (slimy feeling, refreshing feeling) and stability.

[0036]

EFFECT OF THE INVENTION The cleaning composition of the present invention is excellent in stability, excellent in physical cleaning effect, irritating to the skin surface,
An object of the present invention is to provide a detergent composition which does not cause damage and is excellent in a feeling of use (less slimy skin and refreshing after washing).

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-179892 (JP, A) JP-A-6-80559 (JP, A) JP-A-3-204803 (JP, A) JP-A-6-179803 72827 (JP, A) JP-A-5-310539 (JP, A) JP-A-4-243812 (JP, A) JP-A-4-339898 (JP, A)

Claims (1)

(57) [Claims] An average particle diameter is 0.1 to 100 μm,
A detergent composition comprising a spherical fine particle inorganic pigment having an oil absorption of 0.5 ml / g or more and a fatty acid ethylene glycol ester.