KR19990009253A - Solid transparent cosmetic soap composition with excellent moisturizing effect - Google Patents

Abstract

The present invention relates to a solid invisibility equipment by containing alkyl polyglycoside, excellent transparency and excellent skin moisturizing effect. More particularly, the present invention relates to clearing equipment compositions containing 25 to 35 weight percent sodium soap and 30 to 50 weight percent transparency increasing material with 5 to 15 weight percent alkylpolyglycosides. The sodium soap is prepared by using mixed fatty acids such as tallow, palm, palm, palm kernel oil or neutralizing a single fatty acid between C ₈ and C ₂₀ with caustic soda.

Description

Solid transparent cosmetic soap composition with excellent moisturizing effect

The present invention relates to a clearing equipment silk composition excellent in transparency, excellent skin moisturizing effect and simple manufacturing method. More specifically, the present invention relates to a clearing device composition containing an alkylpolyglycoside which is a nonionic surfactant having excellent skin moisturizing effect in sodium soap.

In general, the solidifying equipment is opaque because soap crystals are complexly connected and grow in fiber during manufacturing and drying, but in the case of transparent soap, sodium salts of ordinary fatty acids are uniformly dissolved with a large amount of solvent such as water or ethanol. The growth of soap crystal structure was suppressed and the transparency was increased by adding sugars such as glucose, fructose and sugar and polyhydric alcoholols such as ethylene glycol, propylene glycol, glycerin and diglycerine. That is, various solvents or crystallization barriers (transparency increasers) not only prevent soap crystals from growing, but also minimize the crystals that are produced, giving optical continuity at normal light wavelengths to make soaps appear transparent.

In US Pat. No. 4165293, C _{2 to} C ₆ diols are used to increase transparency. In Japanese Patent No. 88126811, isoprene glycol or 3-methyl-1,3-butylene glycol is used to increase skin moisturizing effect. I was. In addition, US Pat. No. 4,290,904 uses hydroxyalkylethylenediamine to mitigate skin irritation to reduce skin irritation due to high pH. US Pat. It was also.

However, the solid infiltration equipment takes a lot of time to solidify because the soap contains excess moisture and ethanol or substances used to increase the transparency, and even if it is solidified, the moisture contained in the soap cannot be used because it is too soft. There is a problem in mass production because it requires a large working space for the drying process to evaporate the alcohol.

In addition, when soap is used during storage, it is inconvenient to stick to the soap bag and glucose, fructose, sugar, etc. may be precipitated from the soap during long-term storage, and the soap may become opaque.

In general, methods of preparing transparent soaps, which have been introduced, are classified into two compositions according to the presence or absence of alcohol (ethanol). The composition in which alcohol is present is excellent in transparency, but it is difficult to remove alcohol odor and poses a process risk. Therefore, in this invention, the composition which does not use alcohol was taken.

In addition, the conventional transparent soap naturally contains a high pH because it contains an excess of triethanolamine containing 20 to 30% soap components and to prevent the transparency of the soap is lowered during use. This may cause skin irritation even though it contains skin moisturizing ingredients such as glycerin and propylene glycol.

Therefore, the present inventors have tried to develop a transparent soap that can maximize the advantages of the transparent soap and supplement the above problems, and when the alkyl polyglycoside, which is a nonionic surfactant, is properly added to the transparent soap, the transparency is excellent and in particular, the skin It has been found that the stimulation can be minimized to complete the present invention.

The present invention provides a transparent soap composition characterized in that the fatty acid soap contains an alkylpolyglycoside of the formula (1) as a nonionic surfactant:

In the above formula,

R is C ₆ -C ₂₂ alkyl,

n represents the polymerization degree 1.0-2.0.

Alkylpolyglycosides used in accordance with the present invention have excellent dispersibility in soaps, excellent foaming power and a soft feeling of use. In particular, the alkylpolyglycoside according to the present invention is a non-ionic surfactant widely used in human cleansers due to less irritation in the human body, and when used in combination with an anionic surfactant, the degreasing power can be alleviated to increase the skin moisturizing effect of the transparent soap. have.

Preferred alkylpolyglycosides are those wherein R is alkyl having 8 to 14 carbon atoms and the average degree of polymerization n of glycosides is 1.4 to 1.6.

Alkylpolyglycosides used in the present invention are commercially available and can be used in the full-length GLUCOPON series products sold by HENKEL of Germany.

The useful amount of the alkylpolyglycoside according to the present invention may be used in an amount of 1 to 20% by weight and preferably 5 to 15% by weight as a pure component. When it is used below 5%, transparency decreases, the moisturizing effect is insufficient, and the soap takes a long time to solidify, which is not suitable for commercialization. In addition, in the present invention, a transparency increasing substance generally used in transparent soaps, that is, glycerin, sugar, polyethylene glycol, sorbitol, propylene glycol, or the like may be used alone or in combination, and a useful amount thereof is 30 to 50% by weight. When used at 30% by weight or less, the soap became translucent, and when used at 50% or more, the soap receded, making it difficult to use.

Fatty acid soap can be used by neutralizing with caustic soda using a mixed fatty acid such as commonly known tallow, palm, palm, palm kernel oil or a single fatty acid of C _{8 ~} C ₂₀ alone or mixed. A useful amount of fatty acid soap is 25 to 35% by weight. If it is used below 25%, it takes a lot of time to solidify, there is insufficient amount of bubbles, and if it is used more than 35%, it becomes translucent and the rate of solidification is too fast, which may cause problems in the process.

Hereinafter, the present invention is specifically illustrated through Examples and Comparative Examples. However, the following examples should not be understood as limiting the present invention. Alkylpolyglycoside used in the present invention was used under the trade name GLUCOPON 650, and the use ratio of the components is expressed in parts by weight unless otherwise indicated.

(Example)

(Example 1)

Pure 9%, Triethanolamine 12%, Glycerine 13%, Propylene glycol 15%, Polyethylene glycol 4% GLUCOPON650 15%, Sugar 5%, Salt 0.5%, Other antioxidants, Metal ion blockers, etc. When warmed up to 80-85 ° C, 25% of a fatty acid soap (soap neutralized with a C8-C20 fatty acid with caustic soda) was slowly added and stirred while maintaining the above temperature until completely dissolved.

When completely dissolved and the liquid became transparent, the mixture was cooled and stirred at 70 to 75 ° C. by adding flavors, pigments, etc., and then the bubbles were removed, cooled, solidified, and cut.

(Examples 2 to 6 and Comparative Examples 1 to 3)

Examples 2 to 6 and Comparative Examples 1 to 3 were carried out in the same manner as in Example 1 except for using the components shown in Table 1 below.

Example Comparative Example One 2 3 4 5 6 One 2 3 Fatty acid soap 25 30.0 30.0 30.0 35.0 35.0 30.0 30.0 30.0 TEA (99%) 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 10.0 glycerin 13.0 13.0 10.0 15.0 5.0 10.0 15.0 15.0 5.0 P.G 15.0 10.0 10.0 15.0 5.0 5.0 15.0 15.0 5.0 PEG (600) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 APG (50%) 15.0 10.0 20.0 5.0 30.0 25.0 - 3.0 35.0 NaCl 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Sugar 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Etc 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 water 9.0 14.0 7.0 12.0 2.0 2.0 17.0 14.0 4.0

Each test article prepared in Examples 1 to 6 and Comparative Examples 1 to 3 was carried out by the following test method, and the results are shown in Table 1.

(1) Transparency: The soap was cut into 2 mm thick and placed on a general newspaper.

② Foaming force: Tested by Ross-Miles method in accordance with KSM2709.

③ Room temperature stability: The change in physical properties (transparency) after 1 month at 25 ° C. and 60% humidity is indicated by ○ when there is no at all, △ when there is a little, and × when there is a lot.

④ High temperature stability: After 3 weeks at 50 ° C. and 60% humidity, the change in physical properties (transparency) is represented by ○ if no at all, △ if any, and × if there is a lot.

⑤ Drying time: It is natural cooling time to solidify to the level that can be used in solution state.

(6) Solubility: When soap is completely immersed in a 25 degreeC thermostat, when it is 10% or less in the quantity melt | dissolved, it is represented by (triangle | delta) if it is 10-20%, and x if it is 20% or more.

⑦ Adhesion: When the soap is placed in a soap bag containing water of 2㎜ in height and removes the soap after 24 hours, it is easy to fall off ○, relatively easy to fall off △, and when dropped on the strength, × is indicated.

(8) Moisturizing power: The moisture of the skin epidermis was measured on 25 degreeC and 40% of the relative humidity with the moisture meter (Corneometer CM820). Epidermal moisture in human skin varies slightly from person to person, but the average of 68 was obtained before washing with soap.

⑨ Skin irritation degree: Skin irritation degree is the average result of the patch test (PATCH TEST), the higher the value means that the degree of skin irritation is severe and was tested by the following method. Each 0.1% aqueous solution of the test product was added to the hilltop chamber at 0.1 µL, and then attached to the inside of the arms of 30 reviewers. After 24 hours, the skin was washed thoroughly with running water and the skin irritation was measured according to the following criteria. Judging

Average skin irritation range

= Σ (Evaluation standard value X number of the corresponding evaluation values) (total subject X highest evaluation standard value) × 100

Stimulation degree Evaluation Criteria +++ Very serious 2 ++ Severe 1.5 + is average One +- weak 0.5 0 Few 0

Example Comparative Example One 2 3 4 5 6 One 2 3 transparency ○ ○ ○ △ ○ ○ × △ ○ Bubble 85 85 93 80 95 93 88 90 90 Room temperature stability ○ ○ ○ ○ ○ ○ × △ △ High temperature stability ○ ○ ○ ○ × △ × △ △ Drying time (hr) 4 4 5 3 12 7 24 20 15 Solubility ○ ○ △ ○ × △ × △ △ Moisturizing 75 75 83 70 80 75 70 68 85 Adhesion ○ ○ △ ○ △ × × △ △ Skin irritation 17.5 19.0 17.0 20.0 18.0 17.0 25.0 24.0 18.0

As can be seen in Examples 1 to 6 and Comparative Examples 1 to 3, when the alkylpolyglycoside is less than 5% as a pure component, the moisturizing power and transparency are not greatly increased. It is poor in high temperature stability, it takes a lot of time to dry, and it is impossible to use because soap is soft.

Claims (3)

A composition characterized by containing an alkylpolyglycoside of formula (1) In the above formula, R is C ₆ -C ₂₂ alkyl, n represents the polymerization degree 1.0-2.0. 2. A composition according to claim 1, containing 5 to 15% alkylpolyglycoside, based on the weight of the composition. According to claim 1, 25 to 35% by weight solely or mixed with tallow, palm, palm, palm kernel oil or C ₆ -C ₂₀ as fatty acid soap, glycerin, propylene glycol, sorbitol, polyethylene glycol as a transparency increasing material Or 30 to 50% by weight of sugar alone or in combination.