JPH05331019A - Protecting film forming agent and cosmetic containing the same - Google Patents

Abstract

PURPOSE:To obtain a protecting film forming agent capable of providing drying and refreshing feeling and blending with cosmetic in high ratio by blending a fluorine oil with a fluororesin. CONSTITUTION:The protecting film forming agent is obtained by mixing a fluorine oil [e.g. perfluoropolyether of formula I (R and R' are perfluoroalkyl or oxyperfluoroalkyl; p, q and r are positive integer, with the proviso that one or two thereof may be 0; p+q+r is given so as to be liquid or grease-like at ordinary temperature) or trifluoro-chloroethylene of formula II (n is given so as to be liquid or grease-like at ordinary temperature) with a fluororesin. The water-disperse type protecting film forming agent obtained by dispersing a disperse phase containing the fluorine oil and the fluororesin into water is preferably used. Furthermore, a surfactant (preferably lipophilic surfactant) is preferably added to the water-disperse type protecting film forming agent. Thereby, a firmer protecting film can be formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective film forming agent having a novel composition and a cosmetic composition containing the same. The protective film forming agent of the present invention is considered to be used as a drug or a quasi drug.

[0002]

BACKGROUND OF THE INVENTION The main purpose of using cosmetics is to protect the skin and hair from external stimuli (light, heat, chemical substances, etc.) and dryness by forming a protective film.

In order to form such a protective film, oily substances such as petrolatum, liquid paraffin, lanolin, animal and vegetable oils, higher alcohols, higher fatty acids and their esters have been known.

In recent years, silicone, polyperfluoropolyether and the like have also been used.

[0005]

Oily substances such as petrolatum have been used as a base for cosmetics for a long time, but they have drawbacks such as sticky feel and lack of breathability in a protective film. In recent years, it has not been used much.

[0006] Since silicone has a great lubricating performance, it feels uncomfortable when used in a large amount (a slippery feel), so that the blending ratio in cosmetics and the like is limited. On the other hand, when the blending ratio in cosmetics is small, a sufficient water / oil repellency cannot be obtained, and the effect of protecting the skin or the like is also small.
Even when formed as a film on the skin, since the film is thin, the effect of controlling the evaporation of water and keeping the water in the skin is small, and the effect disappears in a short time.

Similar to silicone, polyperfluoropolyether cannot be used alone in a large amount in terms of feel and cost. Further, when the blending ratio to cosmetics is small, only a very thin protective film is formed,
The water / oil repellency effect is small, the effect of retaining water on the skin is small, and the sustainability of these effects is also small.

It is an object of the present invention to provide a protective film forming agent and a cosmetic containing the same, which solves the above-mentioned problems of the prior art.

[0009]

According to the present invention, the above object can be achieved by the following protective film forming agent and cosmetics.

A protective film forming agent containing a fluorine resin and a fluorine oil.

A water-dispersed protective film forming agent obtained by dispersing a dispersed phase containing a fluororesin and fluorooil in water.

A cosmetic containing at least one of the above-mentioned protective film forming agents.

The water-dispersible protective film forming agent preferably contains a surfactant (more preferably a lipophilic surfactant).

Fluorine oil has a bad feel when used alone (heavy, sticky feel), but due to the presence of the fluororesin, a smooth and refreshing feel is obtained. Therefore, it is not necessary to limit the compounding ratio to cosmetics to a low level.

Further, the fluorine resin and the fluorine oil can form a strong protective film having water and oil repellency.

By incorporating a lipophilic surfactant in the water-dispersible protective film forming agent, a stronger protective film can be formed.

[0017]

[Preferred Embodiment]

(Protective film forming agent) Fluorine resin is generally represented by a chemical formula in which hydrogen of hydrocarbon is replaced by fluorine (which may contain halogen elements such as chlorine, oxygen, etc.), and is a resin solid at ordinary temperature (generally Plastic resin). For example, it can be synthesized by polymerizing a monomer in which one or more hydrogen atoms of ethylene are replaced with fluorine atoms. Preferred fluororesins include tetrafluoroethylene resin, tetrafluoroethylene-perfluorovinyl ether copolymer resin, tetrafluoroethylene-perfluoroalkoxyethylene copolymer resin,
Tetrafluoroethylene-hexafluoropropylene copolymer resin, tetrafluoroethylene-hexafluoropropylene-perfluoroalkoxyethylene copolymer resin, tetrafluoroethylene-ethylene copolymer resin, trifluorochloroethylene resin, trifluoride It is a modified ethylene chloride-ethylene copolymer resin, vinylidene fluoride resin, vinyl fluoride resin or the like.

Fluorine oil is generally represented by a chemical formula in which hydrogen of a hydrocarbon is replaced with fluorine (which may contain a halogen element such as chlorine, oxygen and the like), and is a liquid or grease at normal temperature. Preferred fluorine oils are those having a fluoroalkyl group, more preferably perfluoropolyether (the following formula A) or trifluorochloroethylene low polymer (the following formula B), which are represented by the following formulas A and B, respectively. Shown.

[0019]

[Chemical 1]

(R and R'are perfluoroalkyl groups or oxyperfluoroalkyl groups, p, q and r are positive integers, and up to two of them may be 0.)

P + q + r is determined to be liquid or grease-like at room temperature.

(C ₂ ClF ₃ ) _n (Formula B)

N is defined to be liquid or grease-like at room temperature.

The fluororesin and the fluoro oil have an affinity, and they are preferably a mixture, more preferably a uniform and homogeneous mixture. As a result, it is possible to form a film that exerts an even greater effect. Further, the kneading can be performed by heating and kneading as required to further improve the uniformity.

The mixture of fluororesin and fluorooil is, for example, fluororesin powder (for example, having a diameter of 5 μm or less).
Can be obtained by mixing fluorinated oil with fluorocarbon oil, and the pelletized fluorocarbon resin and fluorocarbon oil can be kneaded using a kneading machine or the like (heated as necessary) to obtain a part or all of the fluorocarbon resin. Can be made compatible with fluorine oil.

Mixer of fluorine resin and fluorine oil (preferably, a model in which the mixer has a planetary motion and can be expected to have a kneading effect in addition to a dispersing and stirring effect. VK-1-3
There are 5 types, and this type has a large kneading effect because the stirring spring of the mixer performs planetary motion (revolution / rotation). By mixing and mixing uniformly in (), it is possible to obtain a mixed product or a compatible product of the fluorine resin in the fluorine oil in an amorphous state.

The mixing temperature is 25 to 350 ° C, more preferably 50 to 200 ° C, further preferably 100 to 200 ° C.
And the mixing time is 30 minutes to 6 hours, more preferably 1 to
3 hours.

The mixing ratio of the fluorine resin / fluorine oil is preferably 90/10 or less (more preferably 90% by weight).
/ 10 to 10/90). A water-dispersible protective film-forming agent can be produced by dispersing 1 part by weight of this mixture in 2 parts by weight or more of water. When dispersed in less than 2 parts by weight of water, it becomes a paste.

A surfactant may be added to the mixture. A lipophilic surfactant can be preferably used.

For example, 10 parts of fluorine resin and fluorine oil are used.
It is possible to mix with a stainless steel stirrer at 0 ° C. for 3 hours, further add a lipophilic surfactant, and stir and mix at 100 ° C. for another 2 hours.

Further, a hydrophilic surfactant or a water-soluble polymer can be used. Preferred hydrophilic surfactants are those composed of compounds containing fluorine. Further, organic / inorganic dispersants such as bentonite and bee gum can be used.

The lipophilic (HLB 10 or less) surfactant is insoluble or sparingly soluble in water at room temperature, and includes glycerin fatty acid ester, sorbitan fatty acid ester, methyl glucoside fatty acid ester, sucrose fatty acid ester,
Pentaerythritol fatty acid ester, various dextrin fatty acid ester, ethylene glycol fatty acid ester, polyglycerin fatty acid ester, higher fatty acid polyhydric alcohol ester such as higher fatty acid ester of sucrose, polyethylene glycol fatty acid ester, fatty alcohol ether, higher alcohol of polyethylene glycol Alternatively, there are adducts of higher fatty acids (those having a short polyethylene glycol chain) and the like.

As the water-insoluble ionic surfactant, those having a long alkyl chain and having a plurality of alkyl chains in the same molecule, that is, lecithin, dialkyldimethylammonium salt, dialkylphosphoric acid ester, dialkylphosphoric acid salt, dialkylsulfon, etc. Succinic acid or the like can be used.

To disperse the mixture in water, water is added to the mixture and, for example, 800 using a homomixer.
It can be carried out by treating at 0 rpm for 5 minutes.

(Water-Dispersion Type Protective Film Forming Agent) The water-dispersion type protective film forming agent of the present invention comprises a dispersed phase containing a fluororesin and a fluorinated oil dispersed in water. The dispersed phase is a fluororesin particle (preferably having a diameter of 5 μm or less)
Are coated with fluorine oil, those in which a part of the fluorine resin is partially compatible, and those in which the fluorine resin is completely compatible with the fluorine oil.

The preferred weight ratio of fluororesin: fluorine oil in the water-dispersible protective film forming agent is from 10:90 to 90:10, and the preferred weight ratio of the mixture / water is 0.5 or less. In the above weight ratio, the dispersed phase is stably dispersed in water.

The water-dispersible protective film forming agent of the present invention may contain the above-mentioned various surfactants, dispersants, water-soluble polymers and the like. A lipophilic surfactant is preferably contained. Thereby, a stronger protective film can be formed. A water-soluble surfactant or a water-soluble polymer can also be included.

The water-dispersible protective film forming agent is a mixture of a fluororesin (preferably powder), a fluoro-oil, water and a surfactant at once, and for example, a homomixer is used for 8000 r.
It can be manufactured by treating with pm for 5 minutes. In addition, a fluororesin (preferably powder) and fluoro oil are mixed in advance (a surfactant may be contained), and the resulting mixture is dispersed in water (using a surfactant). It is also possible to manufacture. The water-dispersible protective film forming agent obtained by such a two-step process can form a stronger film.

The diameter of the dispersed phase containing the fluororesin and the fluorooil can be appropriately determined according to the application. For example, it can be 5 μm or less. The protective film forming agent (including water-dispersible type) of the present invention may be used for pharmaceuticals or quasi drugs in addition to cosmetics.

(Cosmetics) The cosmetics of the present invention may be liquids, greases or solids as long as they can be applied to the skin or hair to form a protective film.

[0041]

【Example】

 (Example 1) Protective lotion

[0042]

[Table 1]

(Manufacturing Method) Each component having the formulation shown in Table 1 was weighed into a container and treated with a homomixer at 8000 rpm for 5 minutes. As the tetrafluoroethylene resin, PTFE (average particle size 1 μm) manufactured by Daikin Industries, Ltd. was used, and as the perfluoropolyether, Fomblin He-25 manufactured by Montefloss was used. In addition, "PBC-43" is polyoxyethylene polyoxypropylene cetyl ether (NIKKOL PBC-43 of Nikko Chemicals).

(Results) The emulsion thus obtained was tested for water repellency and fastness by the following method. The results are shown in Table 1. Mixing perfluoropolyether with tetrafluoroethylene resin increases the water repellency. Further, when perfluoropolyether was added to the fluororesin, the fastness was improved.

(Water Repellent Evaluation Method and Evaluation Criteria) The dispersion was thinly applied on a glass plate and left to dry for 1 day. Using this glass plate, the contact angle with distilled water was measured and used as a measure of water repellency. The degree of water repellency was ranked according to the size of the contact angle as follows. ◎ ... 85 ° or more, ○ ... 70 ° to 85 °, Δ ... 50 °
~ 70 °, × ... 50 ° or less

(Fastness Evaluation Method and Evaluation Criteria) Using the above-mentioned water repellency evaluation method, the degree of decrease in contact angle due to washing of the sample plate was used as a measure of fastness. After the water repellency evaluation is completed, the glass plate is placed vertically in the center of a 100 cc beaker, filled with distilled water, and placed on a tabletop ultrasonic cleaner for 1 minute. This sample plate was taken out and dried, and the contact angle was measured and ranked as follows according to the degree of decrease in the contact angle.

(Contact angle after cleaning) / (Contact angle before cleaning)
× 100 = fastness Fastness ◎ ... 90 or more, ◯ ... 75 to 90, △ ... 6
0-75, x ... 60 or less

(Example 2)

[0049]

[Table 2]

The difference in the function of the dispersion liquid was examined depending on the method of preparing the aqueous dispersion liquid of the tetrafluoroethylene resin and the perfluoropolyether.

(Preparation Method A) All the components of Example 2 in Table 2 were weighed in a container and treated with a homomixer of 8000 rpm for 5 minutes.

(Preparation Method B) In each of Example 2 in Table 2, after thoroughly mixing the tetrafluoroethylene resin and perfluoropolyether, an emulsifying dispersant and purified water were added, and the mixture was treated with a homomixer at 8000 rpm for 5 minutes. ..

Table 2 shows the evaluation results of the obtained dispersion liquid.
As compared with the preparation method A (method A), the preparation method B (method B) also improved water repellency and fastness. As the emulsifying dispersant, water-insoluble sorbitan monostearate was superior in water repellency and fastness to water-soluble decaglycerin monolaurate.

(Example 3)

[0055]

[Table 3]

Example 2 with each formulation of Example 3 in Table 3
A dispersion was prepared by the same method (method A or method B).

Table 3 shows the evaluation results of the obtained dispersion.
Addition of fluororesin to polyperfluoropolyether improved water repellency. Further, the dispersion liquid (No. 3) using the lipophilic emulsifier sorbitan monooleate (SO-10) is
When using a hydrophilic emulsifier (No. 1 and No. 2)
Is superior in water repellency and fastness.

Example 4 Baby Lotion (A) Tetrafluoroethylene resin 0.5 (parts by weight) Polyperfluoropolyether 1.0 (B) Squalane 20.0 Decaglyceryl monooleate 2.0 Preservative 0 .1 Glycerin 5.0 (C) Purified water 71.4

After thoroughly mixing the tetrafluoroethylene resin and the polyperfluoropolyether (A phase), the B phase was added and purified water (C phase) was added with stirring to emulsify to obtain a baby lotion. When this product was thinly applied to the body of an infant after bathing, it was possible to maintain moisturized skin without rash due to underwear or diapers.

Example 5 Sunscreen Lotion (A) Fomblin 2.0 (parts by weight) Fluororesin 0.5 Olive oil 30.0 Nikkor SO-10 3.0 UV absorber Adequate amount Titanium 5.0 Preservative Adequate amount (B) Glycerin 5.0 Purified water 54.5

Phase A was mixed well, phase B was added and treated with a homomixer at 8000 rpm for 5 minutes to obtain a sunscreen lotion.

The product showed a good sunscreen effect with a low viscosity dispersion. Furthermore, this effect did not deteriorate even after a water bath.

(Example 6)

[0064]

[Table 4]

(Procedure) According to the weight ratio in Table 4, tetrafluoroethylene resin and polyfluoropolyether were mixed well, methyl glucoside monostearate was added and heated to obtain a uniform dispersion liquid, and purified water was added thereto. Dispersion treatment was performed for 5 minutes with a homomixer to obtain dispersions A and B.

(Protective Lotion) Dispersion A 10 (parts by weight) Carbopol 0.1 NaOH (PH adjustment 5.7) Appropriate amount Propylene glycol 5.0 Methylparaben 0.1 Purified water 84.8

Protective lotion was prepared with the above formulation using Dispersion A in Table 4.

By using this lotion, it was possible to prevent rough hands due to work such as cleaning and washing.

(Blow lotion) Dispersion B 10 (parts by weight) Carbopol 0.1 Wheat peptide 1.0 Glycerin 5.0 Methylparaben 0.1 Purified water 83.8

Blow lotion was prepared using the dispersion B of Table 4 and the above-mentioned formulation.

When this lotion was used, flexible hair was obtained with less split ends and flexibility.

(Example 7) (Dispersion C) Trifluorochloroethylene low polymer 30 (parts by weight) Tetrafluoroethylene-ethylene copolymer resin 5 Sorbitan monostearate 5 Purified water 60

(Emulsion Liquid Foundation) Dispersion C 10 (parts by weight) Titanium oxide 8 Talc 4 Coloring pigment Appropriate amount Carbopol 0.1 Methylparaben 0.1 Purified water 77.8

Dispersion C was prepared in the same manner as in Example 6, and was used in the above formulation to prepare an emulsion base. When this foundation was applied, the makeup was not lost for a long time.

(Example 8) Solid white powder (A) Talc 45 (parts by weight) Kaolin 20 Zinc oxide 15 Light calcium carbonate 10 Magnesium stearate 3 Rice starch 2 Color pigment (B) Tetrafluoroethylene resin 3.0 par Fluoropolyether 2.0 (C) Preservative Suitable amount Perfume Suitable amount

(A) was mixed well, and the mixture (B) was added to it.
And (C) are added to make the mixture uniform, and this is punched.

When this product is applied, it has excellent water resistance and does not lose its makeup for a long time.

(Example 9) Cleaning agent Dispersion A was prepared in the same manner as in Example 6 and weighed and mixed so as to have the following formulation to obtain a cleaning agent. When this cleaning agent is used for cleaning the body, a protective film is formed on the body, and thus it has been confirmed that the cleaning agent has an effect on floor displacement.

Ethanol 40.0 (%) Sodium thiosulfate 0.2 Carboxymethyl cellulose 0.2 Dispersion A 10.0 Purified water Remainder

(Example 10) Disinfectant Disinfectant A was prepared in the same manner as in Example 6, and weighed and mixed so as to have the following formulation to obtain a disinfectant. When this disinfectant was used to clean the affected area, a protective film was formed on the surface of the affected area, and the healing speed was significantly increased.

Ethanol 40 (%) Phenol 3 Acrinol 0.2 Dispersant A 5.0 Purified water Remainder

[0082]

Since the protective film forming agent and the water-dispersible protective film forming agent of the present invention contain a fluororesin and a fluoro oil, they have a smooth and refreshing feel. Therefore, it is not necessary to limit the compounding ratio to cosmetics to a low level.
In addition, since a strong film having water and oil repellency can be formed, it is possible to protect the skin from various irritating substances, prevent the skin from drying, and keep the skin moist for a long time. Prevents dirt from adhering and keeps the skin clean at all times.

Since the cosmetic of the present invention contains the protective film forming agent (including water dispersion type) of the present invention, the same effects as those of the protective film forming agent can be obtained.

Since a strong film can be formed, a sufficient effect can be obtained even when a small amount is applied.

When the protective film forming agent of the present invention is compounded in a coated drug for scratches, burns, etc., the protective film formed by application can protect the skin from stains and irritation.

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Claims (5)

[Claims] 1. A protective film-forming agent comprising a fluororesin and a fluoro oil. 2. A water-dispersed protective film-forming agent, characterized in that a dispersed phase containing a fluororesin and a fluorooil is dispersed in water. 3. The water-dispersible protective film forming agent according to claim 2, which contains a surfactant. 4. The water-dispersible protective film forming agent according to claim 3, wherein the surfactant is a lipophilic surfactant. 5. A cosmetic comprising one or more protective film forming agents according to any one of claims 1 to 4.