JPH05229917A - Production of lead of eyebrow pencil - Google Patents

Abstract

PURPOSE:To provide the eyebrow pencil lead not broken on operations for sharpening the tip of the lead, reduced in the abrasion of the lead tip, usable for a long period, and suitable for drawing fine lines on the eyebrows. CONSTITUTION:The title method comprises sufficiently kneading, dispersing a coloring agent, a body material, a water-soluble binder and a preliminarily emulsified wax, extruding the composition and subsequently drying the extruded product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved eyebrow pencil lead, and more particularly to a method for producing an eyebrow pencil lead suitable for drawing a thin line.

[0002]

2. Description of the Related Art Conventionally known pencil-type cosmetics, especially pencil lead for eyebrow pencils, are based on waxes such as fats and oils,
It is a relatively soft core obtained by extruding and molding this mixture by mixing and dispersing a coloring material and an extender, and is used to draw a relatively thick line that is soft and smooth on the skin.

[0003]

However, in the conventional method of using the eyebrow pencil, the main purpose is to draw a relatively thick line, and to draw an extremely thin line as if the eyebrows naturally grow. In order to obtain an eyebrow core, in a manufacturing method in which a coloring material and a body material are mixed and dispersed in a conventional wax and the mixture is extruded, the wax to be used has extremely high hardness, that is, carnauba wax, candelilla wax, It is necessary to use a composition mainly composed of hardened oil. However, when such a hard wax is used, the obtained core becomes hard, but on the other hand, it becomes very brittle, molding work is difficult, and it is also very difficult to sharpen the tip of the core finely and sharply, and, It is difficult to say that shavings used to prepare the tip have good usability because they have the drawback of being charged with static electricity and adhering to the shaving surface or knife, making it difficult to cleanly remove them.

As a manufacturing method which should eliminate such drawbacks,
Waxes such as fats, waxes, hydrocarbons, fatty acids and coloring materials,
There is a method for producing an eyebrow pencil lead, in which a water-soluble binder which is further dissolved and swollen with purified water is used as an extender, and these are kneaded, molded and dried. The eyebrow pencil lead obtained by such a manufacturing method is relatively easy to manufacture, and the scraps when the tip of the lead is trimmed can be easily removed without being charged with static electricity, which is suitable for drawing a thin line. there were. However, this core has a drawback in that it is necessary to trim the tip extremely finely and sharply, and when a general user trims the tip, chipping sometimes occurs and the stickiness is still insufficient.

[0005]

The inventors of the present invention have made extensive studies in order to eliminate such drawbacks, and as a result, the waxes to be used are previously made into 0 / W type emulsions, and a coloring material, a body material, and water are added to the emulsions. It was found that such drawbacks can be improved by adding a water-soluble binder dissolved and swollen with (purified water), thoroughly kneading and dispersing the whole, and extruding and drying, thereby completing the present invention. It was

That is, according to the present invention, waxes such as fats and oils, waxes, hydrocarbons and fatty acids are previously made into an O / W type emulsion, and a water-soluble bond swollen with a coloring material, a body material and water (purified water). By adding materials, kneading and dispersing, the whole system becomes more uniform, and the eyebrow pencil lead obtained by molding and drying this mixture has improved brittleness when trimming the tip to be sharp and sharpened. The dust is hardly charged with static electricity, does not adhere to the scraped surface and the cutter, and an eyebrow pencil lead capable of easily drawing an extremely thin line can be obtained.

The waxes used in the present invention are generally used in cosmetics. For example, beeswax, wax, carnauba wax, montan wax, spermaceti wax, cometa wax, caderin wax, sucrose fatty acid ester, stearic acid, palmitic acid, behenin. Acid, ceresin, paraffin, microcrystalline wax, polyethylene pox, stearyl alcohol, cetyl alcohol and the like can be mentioned, and one kind or two or more kinds are arbitrarily selected from these. The blending amount is preferably 5 to 50 weight percent.

The emulsifier used to emulsify the wax is polyoxyethylene alkyl ether,
Polyoxyethylene alkyl phenyl ether, polyoxyethylene glycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, etc. Commonly used nonionic surfactants, etc., alone or mixed Can be used. Furthermore, as the emulsifier used for emulsifying the wax, lauric acid diethanolamide in the alkylolamide activator can be used,
This surfactant has a melting point of 37 to 45 [deg.] C. and is solid at room temperature and does not lower the wax hardness so much that the strength of the core is not significantly reduced and the hardness during use can be maintained well. The amount of the emulsifier used is appropriately determined depending on the state of the emulsion and the wax used, but preferably 1 to
30 weight percent.

The coloring material and the body material may be natural or synthetic, and well-known materials conventionally used in cosmetics may be used.
For example, carbon black, black iron oxide, black titanium oxide, red iron oxide, red eyelid, konjou, titanium dioxide, zinc white, mica titanium, organic pigment, talc, mica, yarisite, kaolin, barium sulfate, hydrous silicic acid, silicic acid anhydride, Nylon powder and the like can be mentioned, and one or more kinds are selected from these. The compounding amount is 20 to 90 weight percent.

As the water-soluble binder, one or more kinds of carboxymethyl cellulose, sodium, tragacanth, polyvinyl alcohol, methyl cellulose, hydroxyethyl cellulose, guar gum and the like which are generally used in cosmetics are arbitrarily selected, and the compounding amount is 2 10 to 10 weight percent.

The eyebrow pencil lead of the present invention may contain an antioxidant, a fragrance, etc., if necessary, in addition to the above-mentioned essential components.

[0012]

EXAMPLES The present invention will be described in detail below with reference to examples. The present invention is not limited to these. <Example 1> 20 parts by weight of the wax of the composition (A) and 10 parts by weight of the POE cetyl ether emulsifier are melted by heating and kept at 80 ° C, and this is gradually added to 40 parts by weight of purified water heated to 80 ° C with stirring to add waxes. After that, the mixture was cooled to room temperature with stirring to obtain an O / W type emulsion. Next, 10 parts by weight of hydroxyethyl cellulose having the composition (B) was added to 3 parts of purified water.
Add 0 parts by weight to dissolve. Then, the emulsion of the composition (A), the aqueous solution of hydroxyethyl cellulose of the composition (B), the pigment of the composition (C), and the extender are put into the kneader and kneaded while heating the kneader. When the water content of the mixture became about 17% and became a little harder, the mixture was taken out and further micromixed with three rolls to obtain a water content of 10%.
% Mixture was obtained. This is extruded and has a diameter of 4.
50 mm after being formed into a 0 mm round bar and cut to a length of 180 mm
It was dried at ℃ for 5 hours to obtain a rod-shaped pencil pencil lead. The obtained core had a diameter of 3.7 mm and a bending strength of 2200 g / mm ² . <Example 2> (A) 25 parts by weight of the wax of composition and 5 parts by weight of lauric acid diethanolamide as an emulsifier were melted by heating and kept at 80 ° C, and this was gradually added to purified water heated to about 80 ° C with stirring to add waxes. After that, the mixture was cooled to room temperature with stirring to obtain an O / W type emulsion. Next, 5 parts by weight of hydroxyethyl cellulose having the composition (B) is added to 30 parts by weight of purified water and dissolved. Then, the emulsion of the composition (A), the aqueous solution of hydroxyethylcellulose of the composition (B), and the coloring material and the extender of the composition (C) are charged into the kneader and kneaded while heating. Moisture content of kneaded material is 1
At about 7%, remove the mixture from the kneader,
A mixture having a water content of 9% was obtained while further performing micromixing with three rolls. Then, this mixture was molded into a round bar shape by an extrusion molding machine, cut into a length of about 180 mm, and cut into 5
A black eyebrow pencil lead dried at 0 ° C. for 5 days was obtained. This core has a diameter of 3.8 mm and a bending strength of 2400 g / mm ² ,
When trimming the tip thinly and sharply, it can be trimmed easily without observing chipping of the tip. Was able to be drawn easily. <Comparative Example 1> In the composition of Example 1, except that the emulsifying agent POE cetyl ether was removed, the kneader had the same composition as (B) hydroxyethyl cellulose aqueous solution and (C) composition pigment,
A body material was added, and the waxes in the composition (A) were heated and dissolved and added, and then kneaded, molded and dried under the same conditions as in Example 1 to obtain a core. The obtained core has a diameter of 3.7 mm,
The bending strength was 2300 g / mm ² .

Comparing the machinability of the obtained core with that of the example, both the adhesion of the scraps to the scraped surface and the knife due to static electricity are small, but the chipping when finely trimming the tip is compared with that of the example. Many cores were seen by the example.

[0014]

As described in detail above, by emulsifying and using the wax, which is the main composition, the entire system is made more microscopically uniform, so that the occurrence of chipping when adjusting the tip of the core is further improved. When the solid emulsifier is used, the hardness of the core can be sufficiently maintained, so that the tip is less reduced and it can be used for a long time.

Claims (2)

[Claims] 1. A method for producing an eyebrow pencil lead, which comprises kneading, molding and drying a coloring material, a body material, a water-soluble binder and an emulsion wax. 2. The method for producing an eyebrow pencil lead according to claim 1, wherein lauric acid diethanolamide is used as the emulsion wax.