JPS59227999A - Creamy 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 cream-like cleaning agent containing fatty acid soap as a main ingredient.The cream-type cleaning agent is usually called a cleansing cream and is suitable for use by mixing it with dirt on a plate and then wiping it off. Separated.

Most of the types that are mainly foaming cleansers, that is, the types that are foamed and then rinsed off (hereinafter referred to as cleansing foam types), use fatty acid salts,
That is, fatty acid soap is used as its main ingredient.

Many soap constituents use linear saturated fatty acids having 8 to 22 carbon atoms as fatty acids, and inorganic alkalis such as sodium hydroxide and potassium hydroxide, or basic amic acids such as arginine and histidine as bases.

Fatty acids having 8 to 22 carbon atoms are rarely used alone, and in many cases, two or more of these are used in combination. The reason for this is that products with a small number of carbon atoms have good foaming properties when cleaning, but tend to be irritating to the skin, while products with a long carbon number, on the other hand, are safe for the skin, but In order to improve the foaming power and improve the foaming power, the carbon number is 1.
It is necessary to incorporate lauric acid (No. 2). However, as mentioned above, if lauric acid is incorporated, the safety for the skin will deteriorate.

Several studies have been conducted to improve both foaming properties and skin safety using fatty acids other than straight chain saturated fatty acids. That is, (1) the carbon chain contains an unsaturated bond. (2) The carbon chain is not a straight chain but a branched type with side chains. Or a combination of both.

However, in the case of the former, the oxidation stability is 70% higher, which tends to cause deterioration of the product such as gradation and appearance, while in the case of the latter, although the safety is good, the foaming power is not as improved as with lauric acid. There are drawbacks.

In view of the above-mentioned circumstances, the present inventors conducted extensive research and discovered that it is possible to obtain a cleaning agent containing a fatty acid having a hydroxyl group in the molecule, thereby completing the present invention.

That is, the present invention is characterized in that it contains a salt of eclipse-hydroxystearic acid, and provides a creamy cleansing agent with excellent skin J1ζ safety and foaming properties.

Below, the configuration of the present invention will be explained in detail.

As the hydroxystearic acid used in the present invention, ordinary commercially available products can be used.

Hydroxy fatty acids other than certified hydroxystearic acid are expected to have similar effects, but when considering the cost and ease of labor, which are important factors as cosmetic raw materials,
Hydroxystearic acid is the best.

is a base containing sodium ion, sodium ion, potassium ion, cesium ion, ammonium ion,
Basic inorganic salts and basic organic salts, basic amino acids such as algitone, histidine-1-lysine, ornithine, and basic oligopeptides containing these as residues, as well as monoethanolamine, triethanolamine, triethanolamine, These include basic amines such as amino sugars. Among these, caustic soda and caustic soda are most preferred.

In the present invention, the compounded poison of the monosalt of hydroxystearic acid is 0.5 to 10% (hereinafter simply referred to as %) of the total amount of the creamy detergent of the present invention, preferably 1 to 5%.
It is. If the blending and amount is less than 0.5%, there is little effect on improving foaming power, and if it exceeds IQ%, the surface of the product will lack smoothness and will have an adverse effect on the appearance, such as becoming rough, which is undesirable.

The cream cleanser base to which the salt of hydroxystearic acid, which is an essential component in the present invention, is to be blended is the above-mentioned cleansing foam.

These usually contain 5 to 50% of fatty acid soap having 8 to 22 carbon atoms as a main component. The fatty acid composition of the above-mentioned fatty acid soap is mainly straight-chain saturated fatty acids, but unsaturated and branched fatty acids may be combined in any ratio as long as the effects of the present invention are not impaired.

In addition to the above-mentioned ingredients, the cream-like cleanser of the present invention may also contain free hydroxystearic acid, other free fatty acids, moisturizers, Oils, surfactants, drugs, stabilizers, fragrances, pigments, etc. are added.

Next, the invention will be explained in more detail with reference to examples. The present invention is not limited to these.

(Margins below) (Current formula) Fat 6130% Caustic potash 65 Glycerin z5 Propylene glycol 10 Deodorizing liquid lanolin
1 Stearic acid monoglyceride
1 Purified water 26 Fragrance 05 Examples 1-2
・Evaluation of Comparative Examples 1 to 6: (1) Foaming power test method (2) Safety (3) Odor! / (4) Stability over time The details of each test method are as follows.

(Left below) [Foaming power test method] Dissolve the sample at a concentration of 2% in water adjusted to a calcium ion concentration of 70 ppm to make sample water = solution.

400 rnl of the sample aqueous solution is injected into the mixer and stirred for 1 minute using a turbine type blade at a speed of 4,000 revolutions per minute. The volume of foam foamed by stirring for 1 minute was read, and the volume (-) was taken as a numerical value of foaming power.

(Safety test method) Provide each prepared sample to a well-known cosmetic beauty technician,
After continuous use in the morning and evening for 5 days at a rate of 1.5 to 29 times, the evaluation was based on the number of people who requested teasing when washing their face.

[Odor test method]

A perfumer judged the odor of the samples stored in a 0°C thermostatic chamber for one month after preparation.・・Those whose odor has significantly changed and cannot be used as a cleaning material [Temporal stability test method] After preparation, the appearance of the samples stored in each constant temperature bath at ■°C for 1 month is judged.

O: No change △: - Change but no problem as a cleaning material ×: Change is significant and cannot be accepted as a cleaning material (blank below) Comparative Example 1 shows a combination of valmitic acid and stearic acid, which has 14,16,18 carbon atoms, and was found to be satisfactory in terms of safety, odor, appearance, etc., but the foaming power was poor.

Adding lauric acid, which has a shorter carbon number, and oleic acid, which contains unsaturated bonds, for the purpose of improving foaming power (Comparative Examples 2 and 3) improves foaming power, but in the case of lauric acid, it is not safe. In the case of oleic acid, the odor stability became worse. Furthermore, when isostearic acid, which is a branched fatty acid, is added (Comparative Example 4), both safety and odor are satisfied, but the improvement in foaming power is small.

In Examples 1 and 2, 2-hydroquine stearic acid was added, and the foaming power was also improved, and both safety and odor were satisfactory.

Comparative Examples 5 and 6 are cases where lehydroquine stearic acid is added, but if the amount is too small, the effect will be small (Comparative Example 5), and if it is too large, the foaming power will improve but the appearance will deteriorate. (Comparative Example 6).

Example 3 Hydroquine stearic acid 05% stearin 80 myristic acid 14° caustic soda
45 Caustic potash≠≠
05 Propylene glycol
8゜Glycerin 25. ON-
Methyl-N-cocoyltaurine Na 8.
0 piece wax 1.0 glyceryl monostearate z.

PEG 400 3.
0 fragrance
0.5 purified water
25.0 Patent applicant Shiseido Co., Ltd.

Claims (1)

[Claims] Cream-like cleaning agent characterized by containing a salt of 12-hydroxystearic acid