JPS63132813A - Semi-transparent cosmetic - Google Patents

Abstract

PURPOSE:To obtain a semi-transparent cosmetic by compounding an oleophilic surfactant, a polyoxyethylene-added nonionic surfactant each having specific respective HLB value and an oil to a water/alcohol system having a specific alcohol/(water+alcohol) weight ratio. CONSTITUTION:The objective semi-transparent cosmetic capable of keeping the semi-transparency over a wide temperature range for a long period and having controllable transparency can be produced by compounding a water/ alcohol system having an alcohol(water+alcohol) weight ratio of 0.01-0.4 (preferably 0.03-0.3) with (A) an oleophilic surfactant having an HLB of <=7 (e.g. sorbitan monooleate), (B) a polyoxyethylene-added nonionic surfactant (e.g. POE 2-octyldodecyl alcohol) and (C) an oil. The ratio of the surfactant A to B is 0.05-0.5 to 1.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to cosmetics having a translucent appearance, more specifically, to cosmetics having an HLB of 7 or less in an alcohol/(water+alcohol) foot pillow system. Lipophilic surfactant and HLB 10
This cosmetic is obtained by appropriately blending the polyoxyethylene (hereinafter abbreviated as POE) addition type nonionic surfactant and oil, and the degree of translucency can be adjusted and it can be stored for long periods over a wide temperature range. This invention relates to a translucent cosmetic whose translucency does not change.

[Conventional technology]

Conventionally, water/alcohol-based cosmetics consisting of water, alcohol, humectants, etc. have been widely used in lotions, hair conditioners, shaving lotions, etc., but most of them are transparent in appearance.

Although there are only a few examples, there are non-transparent types, which are in a two-phase state (such as an oil phase and an aqueous phase) when left standing, and which temporarily become cloudy when used.

Transparent water/alcohol-based cosmetics can be obtained by using various general-purpose polyoxyethylene-added hydrophilic surfactants. Cosmetics are difficult to obtain. This is because depending on the surfactant used, it may become cloudy due to the coalescence phenomenon at high temperatures, or conversely, the transparency may increase and become transparent at high temperatures, or the surface active agent may become transparent at low temperatures. This is because a sufficiently stable translucent cosmetic material could not be obtained because of the precipitation of .

[Problem that the invention seeks to solve]

In view of this situation, the present inventor has conducted extensive research to develop a translucent cosmetic that maintains a constant translucency even after long-term storage over a wide temperature range, and whose transparency can be adjusted. As a result, the present invention was completed.

[Means for solving problems]

That is, the present invention provides alcohol/(water+alcohol)
The weight ratio of 0. This is a translucent cosmetic containing a lipophilic active agent with an HLB of 7 or less, a POE-added nonionic surfactant with an HLB of 10 or more, and an oil in a water/alcohol system with an O of 1 to 0.4.

The present invention will be explained in detail below.

In the present invention, the alcohol constituting the water/alcohol system is, for example, ethanol, and the alcohol/(water+alcohol) Oit ratio is 0.01 to 0.4. The number ratio is o
, if the oi is not grooved, it is difficult to dissolve the surfactant,
If it exceeds 0.4, it may be difficult to maintain good translucency in a high temperature range and the film may become transparent. Therefore, the preferred range of this ratio is 0.03 to 0.3.

The lipophilic surfactants with an HLB of 7 or less used in the present invention include sorbitan fatty acid esters such as sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monoisostearate, and sorbitan sesquiisostearate, and glyceryl distearate. , glyceryl monooleate, diglycerin monooleate, diglycerin dioleate, decaglycerin penqueoleate, decaglycerin pentysostearate, diglycerin diisostearate, decaglycerin decaisostearate, decaglycerin pentysostearate Examples include glycerin and polyglycerin fatty acid esters such as, polyethylene glycol fatty acid esters such as POE (2) monooleate, and castor oil derivatives of POE (3 to 10 mol).

The blending amount of lipophilic surfactant is PO with HLB 10 or more.
Ratio to E-addition type nonionic surfactant: 0.02:
1 to 1:1 preferably o, os: 1 to 0.5:
1, and at the blending ratio of the ratio, there is a tendency to become transparent over time (particularly in systems containing a lot of alcohol), and when blended in excess of the ratio, the translucency increases over time and the product becomes cloudy. It causes. The above lipophilic surfactants can be used alone or in combination of two or more.

Examples of the POE-added nonionic surfactant used in the present invention include POE2-octyldodecyl alcohol (10 to 25 moles of EO added), which is a POE branched alkyl ether type, and POE
OE 2-decyltetradecyl alcohol (EO addition 10
~30 mol), POE alkyl ether type PO
E oleyl ether (F, O addition 10-50 mol) and P
OE cetyl x-tyl (EO addition 10-30 moles), P
OE sorbitan ester type POE sorbitan monooleate (20 to 30 moles of EO added), POE sorbitan monoisostearate (10 to 30 moles of EO added)
and POE dihydrocholesterol ether (10 to 30 moles of EO added) or POE castor oil-derived oil conductor (20 to 60 moles of O added).

The amount of POtE-added nonionic surfactant is 0°1
-5% by weight, and if it is less than 0.1% by weight, it is difficult to obtain a good translucent area, and if it is blended in an amount exceeding 5M%, safety problems will occur.

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

The oils used in the present invention include animal and vegetable fats and fats and hydrocarbons such as beef tallow, squalane, olive oil, evening primrose oil, and rice bran oil, mineral oils such as liquid paraffin, isopropyl myristate, pentaerythritol tetra-2-ethylhexanoate, etc. Ester oil, silicone oils such as methylphenyl silicone and dimethyl silicone, synthetic alcohols such as 2-octyldodecanol and 2-decyltetradecanol, and natural alcohols such as oleyl alcohol, which are commonly used in the cosmetics, pharmaceutical, and food industries. Among the oils present, there are those that are liquid at room temperature.

When considering oil as a substance to be solubilized, non-polar oil is more difficult to solubilize than polar oil. The oil used in the present invention is also preferably a polar oil and IOB (Inorganic
and Oranic BalanceiNote-1 below)
When considered as an index, it is 0.1 or more, more preferably 0.2 or more.

(Note-1) 10B, r Area of Chemistry, Volume 11, No. 10, No. 7
Ratios of inorganic and organic values calculated according to the calculation method by Knee, pp. 19-725, 1957.

The blending amount of the oil component is from o, oi to 3% by weight, preferably from 0.01 to 2% by weight, based on the total amount of lotion. If more than 3% by weight of oil is added, a large amount of surfactant must be added to obtain a good translucent area, resulting in safety issues and
Unfavorable from the viewpoint of usability.

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

In the present invention, "semi-transparent" refers to a material having a transparency range of 20 to 95 when the transparency of water is 100. Generally speaking, transparent cosmetics have a transparency of 96 or higher, and milk-like cloudy emulsions have a transparency of 15 or lower.

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

The translucent cosmetic of the present invention may contain other ingredients as necessary, such as fragrances, colorants, humectants, preservatives, water-soluble polymer substances, etc., as long as they do not contradict the purpose. .

〔Example] Hereinafter, the present invention will be explained by examples.

Examples 1-4 As shown in Table 1, the ratio of POE (60 mol) hydrogenated castor oil derivative to diglycerine diisostearate was 1.
:0.1 in Example 1, no change in transparency over time was observed. Immediately after trial production, the transparency was 85, and after one month, there was little change under each condition and it was good.

On the other hand, in Comparative Example 1 where the surfactant ratio was less than this ratio,
An increase in transparency was observed in the high temperature range, and in Comparative Example 2 where the ratio was higher than this, the transparency tended to decrease and become cloudy at room temperature and low temperature range. Furthermore, as shown in Comparative Example 3, in a region where the amount of alcohol is large, it is difficult to maintain a certain level of transparency at high temperatures, and an increase in transparency was observed.

Examples 2.3.4 exhibited good stability with little change in transparency over time.

Example 5 Weight % ■Ion-exchanged water Balance ■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 pyrrolidone carboxylate 0.5 [Phase] Methyl cellulose 1.0 ■ Asparagine tlIo, os @ sodium citrate 0 .100
Preservative 0.2 ■Fragrance 0.3 (manufacturing method) ■■■[Phase]■@ is added to the ion-exchanged water of ■, homogeneously dissolved, and then added to the ethanol of ■■■■■@■ Add the alcohol phase obtained by adding and uniformly dissolving, stir and mix,
A translucent cosmetic was obtained. The transparency of the main island was 50, which was good with little change in transparency over time.

Example 6 Weight % ■Ion exchange water Balance ■Ethanol 10■POE (2
0 mol) 2-octyldodecyl alcohol
0.50 Diglycerin diisostearate, rate 0.1 ■ Sorbitan sesquiisostearate 0.1 ■ Pentaerythritol tetra-2-ethylhexanoate 0.30 Allantoin 0.2 ■ Altitol 5 ■ Aspartic acid
0.04 [phase] mono-arginine
o, io preservative
0.10 fragrance
0.2 (Production method) ■■■■[Phase] was added to the ion-exchanged water of ■ and uniformly dissolved. To the aqueous phase obtained, ■■■■0@ was added to the ethanol of ■ and uniformly dissolved. The alcohol phase was added and mixed with stirring to obtain a translucent lotion. The transparency of the main island was 88, with little change over time and good stability.

Example 7 Weight % ■Ion-exchanged water Balance ■Ethanol ■5■Dipropylene glycol 5■POE (20 mol) Oleyl ether 0.3■Decaglycerin pentysostearate 0.1■Vitamin E acetate
0.20 isopropyl myristate
0.1■Fragrance 0.
1 ■ Citric acid 0.0
2 [Phase] Sodium citrate 0.
06■Preservatives o, i(
Manufacturing method) Add ■■ [phase] to the ion-exchanged water from ■ and stir to make it homogeneous. To this, add the alcohol phase obtained by homogeneously dissolving ■■■■■■ and ■ in the ethanol from ■ and stir. A translucent lotion was obtained by mixing. The transparency of the main island was 92, which was good with little change over time.

Example 8 Weight % ■Ion exchange water Balance ■Ethanol 30■Glycerin
5 ■ Dipropylene glycol
10 ■ POE (25 mol) Cetyl ether 3 ■ Sorbitan monoisostearate 0,
5 ■ Oleyl alcohol 3 ■ Milk
Acid 0.02 Sodium lactate 0.10 [Phase] Monoammonium glycyrrhizinate 0.10 Preservative
0.10 dye
Total amount (manufacturing method) Add ■■■ and ■ to the ethanol of ■ and uniformly dissolve it, then add this to the aqueous phase in which ■■■■ [phase] and @ were added to ■ and uniformly dissolve, and mix by stirring. I got a translucent lotion. The transparency of this product was good with little change in transparency over time of 5o.

Example 9 Weight% ■Ion-exchanged water Balance ■Ethanol 5■Sorbitol
5 ■ 1,3-butylene glycol 10 ■ POE (50 mol) hydrogenated castor oil derivative 0.5 ■ diglycerine diisostearate 0.10 olive oil
0.1 ■ Squalane 0
．． 1 ■ Aspartic acid 0.0
5@lL-Arginine 0.3
0 Carboxyvinyl polymer 0.20 Allantoin 0.20 Preservative
0.1 [phase] fragrance
0.1 (Production method) After adding ■■■■@ to the ion-exchanged water of (■) and uniformly dissolving it to adjust the aqueous phase, to this, ■■■■Oo was added to the ethanol of (■) and uniformly melted. The alcohol phase was added, stirred and mixed, and finally the [phase] was added and thickened to obtain a viscous translucent cosmetic. The transparency of this product was 80, which was good with little change in transparency over time.

Example 10 Weight % ■Ion exchange water Balance ■Glycerin 7■Ethanol
5■POE hydrogenated castor oil derivative (60 moles) 0.5■POE dihydrocholesterol ether 0.2■Diglycerine diisostearate
0.150 Evening Primrose Oil 0
．． 1■ Preservative 0.2■
Fragrance 0.05 (Manufacturing method) After uniformly dissolving ■ to ■ in the ethanol of step (1), it was added to the aqueous phase in which ■ and ■ were uniformly mixed, and the mixture was stirred to obtain a translucent lotion. The transparency of this product was 80, which was good with little change in transparency over time.

Claims (1)

[Claims] The weight ratio of alcohol/(water + alcohol) is 0.01~
A translucent cosmetic comprising a lipophilic surfactant with an HLB of 7 or less, a polyoxyethylene-adducted nonionic surfactant with an HLB of 10 or more, and an oil component in a water/alcohol system with an HLB of 0.4.