JPH0699271B2 - Translucent cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cosmetic material which is semi-transparent in appearance, and more specifically, in a system having a constant ratio of alcohol / (water + alcohol), lipophilicity of HLB 7 or less. A cosmetic obtained by properly blending a surfactant with a polyoxyethylene (hereinafter abbreviated as POE) addition type nonionic surfactant with HLB of 10 or more and an oil component. The degree of translucency can be adjusted and the temperature range is wide. The present invention relates to a translucent cosmetic which does not change in translucency even after long-term storage.

[Conventional technology]

Conventionally, water / alcohol cosmetics comprising water, alcohol, moisturizers, etc. have been widely used for lotions, hair styling agents, shaving lotions, etc., but most of them are transparent in appearance.

Although it is a small example, there is a non-transparent type, which is a material that is in a two-phase state (oil phase and water phase, etc.) when standing and is shaken temporarily to make it cloudy.

Transparent water / alcohol cosmetics can be obtained by using various general-purpose polyoxyethylene-added hydrophilic surfactants. Stable translucent water / alcohol-based cosmetics can be obtained by using these surfactants. It is difficult to get cosmetics. This is because, depending on the surfactant used, cloudiness may occur due to the cloud point phenomenon in the high temperature range, or conversely the transparency may increase and become transparent in the high temperature range. This is because a sufficiently stable translucent cosmetic could not be obtained due to precipitation of the agent.

[Problems to be solved by the invention]

In view of such a situation, the present inventor has earnestly studied to develop a translucent cosmetic material which has a constant translucency even after long-term storage in a wide temperature range and whose transparency can be adjusted. As a result, the present invention has been completed.

[Means for solving problems]

That is, the present invention is alcohol / (water + alcohol)
H in a water-alcohol system with a weight ratio of 0.01 to 0.4
A translucent cosmetic containing a lipophilic active agent of LB7 or less, a POE addition type nonionic surfactant of HLB10 or more and an oil component.

Hereinafter, the present invention will be described in detail.

The alcohol constituting the water / alcohol system in the present invention is, for example, ethanol, and the weight ratio of alcohol / (water + alcohol) is 0.01 to 0.4. If the ratio is less than 0.01, it is difficult to dissolve the surfactant, and if it exceeds 0.4, it may be difficult to maintain good translucency in a high temperature range, and the resulting product may become transparent. Therefore, the preferable range of this ratio is 0.03 to 0.3.

HLB7 or less lipophilic surfactant used in the present invention, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monoisostearate, sorbitan fatty acid esters such as sorbitan sesquiisostearate, glyceryl distearate,
Glyceryl monooleate, diglycerin monooleate, diglycerin dioleate, decaglycerin pentaoleate, decaglycerin pentaisostearate,
Glycerin and polyglycerin fatty acid esters such as diglycerin diisostearate, decaglycerin decaisostearate, decaglycerin pentaisostearate, polyethylene glycol fatty acid esters such as POE (2) monooleate, and castor of POE (3 to 10 mol) An oil derivative etc. can be mentioned.

The blending amount of the lipophilic surfactant is 0.02: 1 to 1: 1 in the ratio with the HLB10 or more POE addition type nonionic surfactant, preferably 0.05: 1 to 0.5: 1, and the blending amount less than the ratio. In the case of (1), there is a tendency to become transparent with time (especially for systems with a large amount of alcohol), and when compounded in excess of the above ratio, the translucency increases with time, causing turbidity. The above lipophilic surfactants can be used alone or in combination of two or more kinds.

The POE-added nonionic surfactant used in the present invention is P
OE branched alkyl ether type POE2 octyldodecyl alcohol (EO addition 10 to 25 moles), POE2 decyl tetradecyl alcohol (EO addition 10 to 30 moles), POE alkyl ether type POE oleyl ether (EO addition 10 to 50 moles) ) And POE cetyl ether (EO addition 10-30 mol), POE sorbitan ester type POE sorbitan monooleate (EO addition 20-30 mol), POE sorbitan monoisostearate (EO addition 10-30 mol) and POE dihydro. Cholesterol ether (10 to 30 mol of EO addition) or POE castor oil derivative (20 to 60 mol of EO addition) and the like can be mentioned.

The amount of the POE-added nonionic surfactant is 0.1 to 5% by weight. If it is less than 0.1% by weight, it is difficult to obtain a good translucent region, and if it exceeds 5% by weight, it is safe. The above problem arises.

The above POE-added nonionic surfactants can be used alone or in combination of two or more.

The oil used in the present invention includes animal and vegetable oils and fats such as beef tallow, squalane, olive oil, evening primrose oil, rice bran oil and hydrocarbons, mineral oils such as liquid paraffin, isopropyl myristate, ester oils such as pentaerythritol tetra-2-ethylhexanoate. , Methylphenyl silicon,
Silicone oil such as dimethyl silicone, 2 octyldodecanol which is a synthetic alcohol, 2 decyl tetradecanol, oleyl alcohol which is a natural alcohol, and other oils commonly used in the cosmetics, pharmaceutical and food industries at room temperature. The thing which shows a liquid can be mentioned.

When the oil is considered to be the substance to be solubilized, the nonpolar oil is less likely to be solubilized than the polar oil. The oil used in the present invention is also preferably a polar oil, which is IOB (Inorganic and Oranic Balanc).
e: When considering the following Note-1) as an index, it is 0.1 or more, more preferably 0.2 or more.

(Note-1) IOB: "Chemistry" Vol. 11, No. 10, pp. 719-725,
Ratio of inorganic and organic values calculated according to the calculation method by Fujita shown in 1957.

The oil content is 0.01 to 3% by weight, preferably 0.01 to 2% by weight, based on the total amount of the lotion. When the oil content is more than 3% by weight, a large amount of surfactant must be mixed in order to obtain a good translucent region, which is not preferable from the viewpoint of safety and usability.

The oil used in the present invention may be used alone or in combination of two or more kinds.

In the present invention, the term “translucent” means that the transparency is 20 to 95 when the transparency of water is 100. Generally, what is called a transparent cosmetic has a transparency of 96 or more, and a milky cloudy emulsion has a transparency of 15 or less.

Further, regarding the measurement of transparency, the present inventors use a digital colorimetric color difference calculator manufactured by Suga Test Instruments Co., Ltd., and measure the transparency of distilled water as 100 as a control.

The semitransparent cosmetic composition of the present invention may contain other components, for example, a fragrance, a colorant, a moisturizer, an antiseptic, and a water-soluble polymer substance, if necessary, as long as the purpose is not impaired. .

[Examples] Hereinafter, the present invention will be described with reference to Examples.

Examples 1 to 4 As shown in Table 1, in Example 1 in which the ratio of POE (60 mol) hydrogenated castor oil derivative to diglycerin diisostearate was 1: 0.1, no change in transparency was observed with time. Immediately after trial production, the one with a transparency of 85 was good after one month with little change under each condition. On the other hand, in Comparative Example 1 in which the surfactant ratio was less than the ratio, an increase in transparency was observed in the high temperature range, and in Comparative Example 2 in which the ratio was more than the ratio, the transparency decreased and tended to become cloudy at room temperature and low temperature range. is there. Further, as shown in Comparative Example 3, in a region where the amount of alcohol was large, it was difficult to maintain constant transparency at high temperature, and an increase in transparency was observed.

In Examples 2, 3 and 4, there was little change in transparency over time and stability was good.

Example 5 Weight% Ion-exchanged water Remainder Ethanol 10 1,3 Butylene glycol 5 Propylene glycol 5 POE (30 mol) Sorbitan monooleate 0.8 POE (15 mol) Dihydrocholesterol ether 0.2
Sorbitan monooleate 0.3 Rice bran oil 1.0 Sodium pyrrolidonecarboxylate 0.5 Methylcellulose 1.0 Aspartic acid 0.05 Sodium citrate 0.10 Preservative 0.2 Perfume 0.3 (Preparation method) Add ion-exchanged water to the homogeneously dissolved water and add to it. Then, the alcohol phase obtained by uniform dissolution was added and mixed by stirring to obtain a translucent cosmetic. The transparency of this product was 50, and there was little change in transparency over time, which was good.

Example 6 Weight% Ion-exchanged water balance Ethanol 10 POE (20 mol) 2-octyldodecyl alcohol 0.5
Diglycerin diisostearate 0.1 Sorbitan sesquiisostearate 0.1 Pentaerythritol tetra-2-ethylhexanoate 0.3 Allantoin 0.2 Altitol 5 Aspartic acid 0.04 L-Arginine 0.1 Preservative 0.1 Perfume 0.2 (Preparation) Add to ion-exchanged water Ethanol was added to the aqueous phase obtained by uniform dissolution, and the alcohol phase obtained by uniform dissolution was added and mixed with stirring to obtain a semitransparent lotion. The transparency of this product was 88, showing little change over time and good stability.

Example 7 wt% ion-exchanged water balance ethanol 15 dipropylene glycol 5 POE (20 mol) oleyl ether 0.3 decaglycerin pentaisostearate 0.1 vitamin E acetate 0.2 isopropyl myristate 0.1 fragrance 0.1 citric acid 0.02 sodium citrate 0.06 preservative 0.1 (Manufacturing method) was added to ion-exchanged water, and the mixture was stirred to make it uniform. Then, the alcohol phase obtained by uniformly dissolving and in ethanol was added to this, and the mixture was stirred and mixed to obtain a semitransparent lotion. The transparency of this product was 92, which was good with little change over time.

Example 8 Wt% Ion-exchanged water Remainder Ethanol 30 Glycerin 5 Dipropylene glycol 10 POE (25 mol) Cetyl ether 3 Sorbitan monoisostearate 0.5 Oleyl alcohol 3 Lactic acid 0.02 Sodium lactate 0.10 Monoammonium glycyrrhizinate 0.1 Preservative 0.1 Dye After adding and to the ethanol of the production method) and uniformly dissolved, this was added to and uniformly mixed with the aqueous phase, and mixed by stirring to obtain a semi-transparent lotion. The transparency of this product was good with little change in transparency after 50 hours.

Example 9 Weight% Ion-exchanged water Remainder Ethanol 5 Sorbitol 5 1,3-Butylene glycol 10 POE (50 mol) hydrogenated castor oil derivative 0.5 Diglycerin diisostearate 0.1 Olive oil 0.1 Squalane 0.1 Aspartic acid 0.05 L-Arginine 0.3 Carboxyvinyl Polymer 0.2 Allantoin 0.2 Preservative 0.1 Perfume 0.1 (Preparation method) is added to ion-exchanged water and dissolved uniformly to adjust the water phase, then to this is added ethanol and the alcohol phase obtained by uniform dissolution is added and stirred. , And mixed and finally thickened to obtain a viscous translucent cosmetic. The transparency of this product was 80, and there was little change in transparency over time, which was good.

Example 10 wt% ion-exchanged water balance glycerin 7 ethanol 5 POE hydrogenated castor oil derivative (60 mol) 0.5 POE dihydrocholesterol ether 0.2 diglycerin diisostearate 0.15 evening primrose oil 0.1 preservative 0.2 perfume 0.05 (preparation) to ethanol ~ After being uniformly dissolved, was added to the uniformly mixed aqueous phase and stirred to obtain a semi-transparent lotion. The transparency of this product was 80, and there was little change in transparency over time, which was good.

Claims (1)

[Claims] 1. A water-alcohol system having a weight ratio of alcohol / (water + alcohol) of 0.01 to 0.4, a lipophilic surfactant having an HLB of 7 or less and a polyoxyethylene addition type nonionic surfactant having an HLB of 10 or more, and A semi-transparent cosmetic containing an oil component.