JPH072626B2 - Black liquid cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a liquid cosmetic composition having excellent line drawing performance, coating performance, and high safety, and particularly, for a pen-type cosmetic device, good ejection from a pen tip. The present invention relates to a black liquid cosmetic that maintains the above-mentioned properties and has less clogging at the pen tip.

(Conventional technology and its problems) Conventional cosmetics such as eyeliner, eyebrow, eye shadow, and mascara have a high-viscosity liquid cosmetic product built into a makeup container and a brush that contains liquid cosmetic product. ，
There are types that apply powdery cosmetics with an applicator such as a brush or sponge, and pencil types that use solid cosmetics as the core, but types that use highly viscous liquid cosmetics are However, it was necessary to reapply the liquid to the brush many times during use, and the application feeling was also poor.

The same applies to the powder type, and the pencil type may damage the eyes.

On the other hand, carbon black has been used as a black pigment for cosmetics in the past, but it is said that carbon black may be mixed with 3,4-benzpyrene, which is a carcinogen, in the cosmetics field. Is being asked about safety.

Therefore, the present inventors have used a highly safe black pigment,
From the viewpoint that the above-mentioned problems can be solved if a low-viscosity liquid cosmetics can be prepared and incorporated into a pen-type cosmetic device having a pen tip made of a soft material that does not damage the eyes, the results of the earnest research show the following findings. Came to get.

In a structure in which a liquid cosmetic material is built into a pen-type cosmetic tool and the cosmetic material is guided to the pen tip by capillary force, the particle size of the pigment is set to 1 in order to prevent clogging at the pen tip.
Must be less than μm.

At this time, the viscosity of the cosmetic must be in the range of 1.5 to 200 centipoise (hereinafter abbreviated as cps) in order to smoothly guide the cosmetic to the pen tip.

Since it has a built-in cosmetics, it takes time to restore it when it is dried with the pen tip, so it is necessary to have a performance that makes it difficult for the pen tip to dry.

In view of the above-mentioned points, the present invention has finally completed the present invention as a result of conducting various studies mainly on pigments as colorants.

That is, the present invention comprises titanium nitride having a particle size of 1 μm or less; propylene glycol, glycerin, polyethylene glycol, 1,3-butylene glycol alone or in a mixture;
The subject matter is a black liquid cosmetic composition which is composed of at least water and has a viscosity of 1,5 to 200 cps.

(Function) The black liquid cosmetic of the present invention can be continuously used because it can be incorporated in a soft pen-shaped cosmetic, and the coating feeling is good, and titanium nitride is particularly harmful because it is used as a coloring agent. It contains no substances and has no safety issues.

(Structure of the Invention) Each component used in the present invention will be described below.

Titanium nitride is used as a black pigment, and it is necessary to use one having a particle diameter of 1 μm or less. As a result of various studies using materials such as urethane, felt, and sintered fiber as the pen tip, the particle size of titanium nitride is set to 1 μm or less in order to allow cosmetics to pass smoothly without causing clogging of the pen tip. This is because they have found that there is a need. Particle size 1
Titanium nitride having a size of less than μm can be obtained by making it fine by using various kinds of general crushing / dispersing machines and, if necessary, averaging.

Propylene glycol, glycerin, polyethylene glycol and 1,3-butylene glycol are used to prevent the cosmetics from drying with the pen tip, and all of these solvents have low skin absorption toxicity. ，
They can be used alone or as a mixture of two or more kinds. The amount used is preferably 2 to 30% by weight.

The viscosity of the cosmetic amount can be adjusted by using various known water-soluble polymers, but it is necessary to set it in the range of 1,5 to 200 cps. At 1.5 cps or less, liquid leakage easily occurs from the pen tip, and at 200 cps or more, ejection from the pen tip is not smooth.

In addition to the above essential ingredients, a dispersant, penetrant, and
Moisturizers, antiseptic / antifungal agents, etc. can be added as appropriate.

(Example) Hereinafter, the present invention will be described in more detail with reference to Examples. In the examples and comparative examples, "parts" means "parts by weight".

Example 1 (Eyeliner liquid) Titanium nitride (manufactured by Tokyo Steel Co., Ltd.) 10.0 parts Nikkor BC-10TX (polyoxyethylene cetyl ether, dispersant, manufactured by Nikko Chemicals) 1.0 part Shellac (water-soluble polymer, dispersion) Agent, Gifu Shellac Co., Ltd. 1.5 parts Propylene glycol 5.0 parts Nikkor NP-10 0.6 parts (Polyoxyethylene nonylphenyl ether, penetrant, Nikko Chemicals Co., Ltd.) Sodium dehydroacetate 0.3 parts (antiseptic / prevention Mold agent) Water 71.6 parts In the above components, first add shellac to 30 parts of water and adjust to pH 8 with sodium hydroxide, then add the rest except for 41.6 parts of water and mix, and pass 5 times with 3 roll mills of the present invention. . Further, 41.6 parts of water was added and the mixture was stirred and mixed, and then passed through a 1.0 μm filter to obtain a black eyeliner liquid. The viscosity of this eyeliner solution at 25 ° C. was 4.0 cps when measured with a B-type rotational viscometer of 60 rpm.

The black eyeliner solution of this example was sterilized by heating and then sterilized with ethylene oxide gas, which was filled in a pen-type makeup tool equipped with a urethane pen tip having a trial production of continuous pores to prepare a test sample.

Example 2 (Eyebrow) Titanium nitride (manufactured by Tokyo Iron and Steel Co., Ltd.) 7.0 parts Nikkor BC-10TX 1.0 part Urea (moisturizer) 8.0 parts Glycerin 8.0 parts Plating M (methyl P-oxybenzoate, antiseptic and fungicide, Ueno Pharmaceutical Co., Ltd. 1.0 part Poval PVA-117 (polyvinyl alcohol, viscosity modifier, manufactured by Kuraray Co., Ltd.) 1.5 parts Water 73.5 parts Heat and dissolve Poval PVA-117 in 43.5 parts of the above component water. After mixing and stirring the remaining whole amount, the 3-roll mill was passed 5 times, the Poval PVA-117 aqueous solution was added, and the 3-roll mill was passed 3 times, passed through a 1.0 μm filter to obtain an eyebrow solution. The viscosity of the liquid at this time was 12.5 cps.

This black eyebrow solution was sterilized by heating, and then filled in a pen-shaped makeup tool with a pen tip attached with a bundle of trial-prepared nylon filaments that had been subjected to ethylene oxide gas sterilization to prepare a test sample.

Example 3 (Mascara) Titanium nitride 8.0 parts Nikkor PBC-34 (polyoxyethylene-polyoxypropylene cetyl ether, dispersant, manufactured by Nikko Chemicals) 0.7 parts Shellac 1.0 part Nikkor NP-10 (polyoxyethylene nonylphenyl ether, Penetrant, manufactured by Nikko Chemicals Co., Ltd. 0.9 parts Propylene glycol 8.0 parts Methyl paraoxybenzoate 0.3 parts Poval PVA-117 3.0 parts Water 87.8 parts In the above ingredients, first add shellac to 30 parts of water and adjust to pH 8 with sodium hydroxide. . Next, add 57.8 parts of water and the rest of the amount except for Poval PVA-117 to a 3-roll mill.
By passing it through, a black paste is obtained.

Separately, 57.8 parts of water and poval are mixed and dissolved by heating. The povale aqueous solution and the black paste were mixed, passed through a three-roll mill three times, and passed through a 1.0 μm filter to obtain a mascara liquid. The viscosity of this product was 90 cps.

After sterilizing the mascara liquid of the present example by heating, it was filled in a pen-shaped makeup tool with a pen tip attached with a bundle of trial-prepared nylon filaments that had been subjected to ethylene oxide gas sterilization, and used as a test sample. .

Comparative Example 1 A commercially available pencil type black eyeliner was used as a test sample.

Comparative Example 2 A commercially available pencil type eyebrow was used as a test sample.

Comparative Example 3 A commercially available high viscosity liquid type mascara was used as a test sample.

Comparative Example 4 The same as Example 1, except that the overstep is removed. When the particle size of titanium nitride in the eyeliner solution thus obtained was measured with a grind gauge, the maximum particle size was 8 μm,
The viscosity of the liquid was 5.2 cps.

The eyeliner liquid obtained in Comparative Example 4 was used as a test sample in the same manner as in Example 1.

Comparative Example 5 The procedure of Example 2 was repeated, except that glycerin was removed and the amount of water was changed to 81.5 parts. The viscosity of the eyebrow liquid thus obtained was 10.2 cps.

Comparative Example 6 The procedure of Example 3 was repeated, except that in Example 3, Povar PVA-117 5.0 parts water 85.8 parts was used. The viscosity of the mascara liquid thus obtained was 280 cps.

(Effects of the Invention) The test results for Examples 1 to 3 and Comparative Examples 1 to 5 are shown in the table above.

Test results Test method and evaluation State of coated surface Is thin line drawn evenly or is there unevenness on the coated surface?

◯: It can be drawn finely and has no unevenness.

X: Thick or uneven coating surface.

Feeling of application Sensory test by practical test ○: Good ×: Poor clogging Test sample was left in a 50 ° C atmosphere for 2 weeks with the pen tip facing down, and then applied to see if there was scratching.

○: No bleeding ×: Scratch bleeding Pen tip dryness After leaving the pen tip exposed in an atmosphere of 50 ° C and 30% humidity for 24 hours, see if there is shaving.

◯: No bleeding x: Scratch bleeding The cosmetic followability is checked for the presence or absence of squeegee when applied to JIS P3201 Writing Paper A at a speed of 10 cm / sec.

◯: No blemishes X: No blemishes As described above, the black liquid cosmetic of the present invention is basically highly safe and has excellent application performance as a cosmetic for pen-type cosmetics. Eyebrow,
In addition to mascara, it can be applied to cosmetics such as eye shadows.

Claims (1)

[Claims] 1. Titanium nitride having a particle diameter of 1 μm or less; propylene glycol, glycerin, polyethylene glycol, 1,3-butylene glycol alone or in a mixture;
A black liquid cosmetic composition comprising at least water and having a viscosity of 1.5 to 200 centipoise.