JP2021070636A - Mascara composition, and method for producing the mascara composition - Google Patents

Abstract

To provide a mascara composition that has a reduced feeling of irritation while comprising carbon fiber, and a method for producing the composition.SOLUTION: A mascara composition contains a carbon fiber. At least one edge of the carbon fiber is coated with a coating material.SELECTED DRAWING: None

Description

The present invention relates to, for example, a composition for mascara used by being applied to eyelashes, and a method for producing the composition for mascara.

Conventionally, a composition for mascara containing fibers such as synthetic fibers is known. As a composition for mascara of this kind, for example, a composition for mascara containing fibers such as polyamide fiber, polypropylene fiber, or carbon fiber is known (Patent Document 1).

In the mascara composition described in Patent Document 1, by applying to the eyelashes, the fibers are arranged along the eyelashes, and the eyelashes can be made to look longer or thicker.

However, when the composition for mascara described in Patent Document 1 contains carbon fibers, there is a problem that the irritation is relatively high. Specifically, since the rigidity of the carbon fiber is relatively high, there is a problem that the tip (edge) of the carbon fiber hits the eyelid or the like, and a stimulating feeling such as a tingling sensation may occur during or after use.

Special Table 2009-50002

In view of the above problems and the like, it is an object of the present invention to provide a composition for mascara that contains carbon fibers and suppresses irritation, and to provide a method for producing the composition for mascara.

The composition for mascara according to the present invention is characterized by containing carbon fibers, and at least one end edge of the carbon fibers is covered with a covering material.
According to the above composition for mascara, since at least one edge of the carbon fiber is covered with a coating material, the edge of the relatively rigid carbon fiber comes into direct contact with the skin during or after use. Can be suppressed. Therefore, it is possible to suppress the irritation feeling on the skin while containing carbon fibers having relatively high rigidity.

In the above composition for mascara, the coating material preferably has a hardness of 100 g or more and 1,000 g or less as measured by a rheometer. As a result, the irritation feeling can be further suppressed while containing carbon fibers.

The method for producing a composition for mascara according to the present invention includes a coating step of coating carbon fibers with a coating material by stirring a mixture containing carbon fibers and a coating material for coating the carbon fibers. It is characterized by.

The composition for mascara of the present invention has the effect of suppressing irritation while containing carbon fibers. The method for producing a mascara composition of the present invention has the effect of being able to obtain a mascara composition containing carbon fibers and having suppressed irritation.

The schematic diagram of the apparatus example for carrying out a coating process.

An embodiment of the composition for mascara according to the present invention will be described below.

The composition for mascara of the present embodiment contains carbon fibers, and at least one edge of the carbon fibers is covered with a coating material. In other words, the composition for mascara of the present embodiment includes carbon fibers and a coating material covering at least one edge of the carbon fibers.
As described below, it is preferable that the composition for mascara of the present embodiment contains carbon fibers, and both ends of the carbon fibers are covered with a coating material.

In other words, the composition for mascara of the present embodiment preferably contains carbon fibers and a coating material covering at least both end edges of the carbon fibers. In other words, the composition for mascara of the present embodiment contains a fibrous material, and the fibrous material contains carbon fibers and a coating material covering at least both end edges of the carbon fibers.

In the composition for mascara of the present embodiment, the above-mentioned fibrous material contains carbon fibers and a coating material covering at least both end edges of the carbon fibers. Therefore, both ends of the carbon fiber are covered with a coating material. This makes it possible to prevent the edges of the relatively rigid carbon fibers from coming into direct contact with the skin during or after use. Therefore, it is possible to suppress the irritation feeling on the skin while containing carbon fibers having relatively high rigidity.
Further, since the fibrous material containing carbon fibers is arranged along the eyelashes, it is possible to give a long feeling that makes the eyelashes look longer.

The length of the carbon fibers (carbon fibers constituting the fibrous material) may be 0.1 mm or more and 10 mm or less, and preferably 0.5 mm or more and 5 mm or less. When the length is 0.5 mm or more and 5 mm or less, there is an advantage that a long feeling that makes the eyelashes look longer can be sufficiently provided without impairing the finish after application to the eyelashes.

The thickness of the carbon fibers (carbon fibers constituting the fibrous material) may be 1 μm or more and 100 μm or less, and preferably 5 μm or more and 50 μm or less. When the thickness is 5 μm or more and 50 μm or less, there is an advantage that the eyelashes can be sufficiently given a natural finish close to that of the self-eyelashes after the application of the mascara composition.

The length and thickness of the carbon fibers can be measured by observing the fibrous material contained in the composition for mascara with a microscope.
Specifically, the length of the above carbon fibers is determined by observing at least 20 fibrous materials, measuring the length of each carbon fiber, and averaging the lengths.
Further, for the thickness of the carbon fiber, the thickness of at least three points is measured for one fiber, and the average value thereof is obtained. The thickness (average value) of at least 20 fibers is averaged to obtain the above-mentioned carbon fiber thickness.
The length and thickness of the carbon fibers can be measured by observation with an optical microscope or an electron microscope. For example, the thickness can be measured at the portion where the carbon fiber is not covered with the coating material, and the length and thickness can be measured by observing the carbon fiber after performing a treatment for dissolving and removing the coating material. Can be measured.

The tensile elastic modulus of the carbon fiber is, for example, 1000 cN / dtex or more and 2000 cN / dtex or less.

Examples of the above-mentioned carbon fibers include PAN-based carbon fibers and pitch-based carbon fibers.

In the fibrous material, the mass ratio of the coating material to the carbon fiber may be 0.1 or more and 30 or less, and preferably 1 or more and 20 or less. Further, the carbon fiber may be 4 parts by mass or more and 85 parts by mass or less, and the coating material may be 15 parts by mass or more and 96 parts by mass or less with respect to 100 parts by mass of the fibrous material.

In the fibrous material, the coating material covers at least both end edges of the carbon fiber. The covering material preferably covers the entire surface of the carbon fibers.

The above-mentioned coating material preferably has a hardness of 100 g or more and 1,000 g or less as measured by a rheometer.
The hardness is measured under the following measurement conditions. Specifically, a FUDOH rheometer manufactured by Leotech Co., Ltd. is used as a measuring device, and measurement is performed under the conditions of temperature: 25 ° C., RANGE: 2 kg weight, adapter: φ5 mm needle, sample table speed: 6 cm / min, and approach width: 5 mm. In addition, a measurement sample is prepared by the method described in the examples.
For example, a coating material for coating carbon fibers is extracted with an organic solvent, and then the organic solvent is volatilized to obtain a measurement sample for measuring the hardness.
The above hardness is preferably 200 g or more. The hardness is preferably 500 g or less.

The above-mentioned coating material is solid (wax-like) at room temperature. The above-mentioned coating material is usually a composition containing a plurality of kinds of components.

The above-mentioned coating material contains, for example, a synthetic resin such as urethane resin and a synthetic wax. The above-mentioned coating material may further contain a dispersant.
The hardness of the coating material can be reduced, for example, by increasing the content ratio of the softer urethane resin and decreasing the content ratio of the harder synthetic wax.

As the synthetic resin contained in the above-mentioned coating material, urethane resin is preferable in that the coating material can have appropriate elasticity.
The urethane resin is a synthetic resin having a urethane bond in the molecule. Examples of the urethane resin include polyurethane-34 and polyurethane-35 in the cosmetic labeling name. Polyurethane-34 is a reaction intermediate (prepolymer) of 1,6-hexanediol, neopentylene glycol, adipic acid, and hexamethylene diisocyanate, and further N- (2-aminoethyl). ) -3-Aminoethanesulfonic acid is a polymer compound reacted with ethylenediamine. Polyurethane-35 is a reaction compound of adipic acid, dicyclohexylmethanediisocyanate, ethylenediamine, 1,6-hexanediol, and neopentyl glycol and sodium N- (2-aminoethyl) -3-aminoethanesulfonate (high). Molecular compound).

Examples of the synthetic wax contained in the above-mentioned coating material include compounds having saturated fatty acid residues and amino acid residues in the molecule.
The fatty acid residue is a group derived from an organic acid having 12 or more and 22 or less carbon atoms. Saturated fatty acid residues include at least one residue selected from the group consisting of lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, and behenic acid.
Amino acid residues are groups derived from amino acids that have two carboxy groups in the molecule. Examples of amino acids having two carboxy groups in the molecule include glutamic acid and aspartic acid.

As the synthetic wax, an amide-bonded compound of the saturated fatty acid and the amino acid is preferable. The amide-bonded compound is preferably a compound in which each of the two carboxy groups of the amino acid is ester-bonded with a monohydric alcohol having 20 or more and 32 or less carbon atoms.
As the monohydric alcohol having 20 or more and 32 or less carbon atoms, at least one selected from the group consisting of sterols such as phytosterols or cholesterol, saturated branched chain monohydric alcohols, and saturated linear monohydric alcohols is preferable.
The sterol is preferably phytosterol, the saturated branched chain monohydric alcohol is preferably octyldodecanol, and the saturated linear monohydric alcohol is preferably behenyl alcohol. A preferred synthetic wax is an esterified compound of a monohydric alcohol containing phytosterol, octyldodecanol, and behenyl alcohol and the carboxy group of the amino acid amide-bonded to a saturated fatty acid.

A particularly preferred synthetic wax is a diester compound of lauroyl glutamic acid and (a mixed alcohol of phytosterol / behenyl alcohol / octyldodecanol) [di lauroyl glutamic acid (octidodecyl / phytosteryl / behenyl)]. When the coating material contains such a synthetic wax, when the above composition for mascara is applied to the eyelashes, the compatibility between the fibrous material and the eyelashes can be improved.

The above dispersant is a lipophilic surfactant having an HLB value of less than 10 (preferably less than 8). When the coating material contains a dispersant, the synthetic resin such as the urethane resin and the synthetic wax can be more uniformly dispersed in the coating material.

Examples of the above-mentioned dispersant include polyoxyethylene higher alcohol ether (less than HLB10) and sucrose fatty acid ester (less than HLB10).
As the polyoxyethylene higher alcohol ether, an ethylene oxide adduct of a monohydric higher alcohol having 12 or more and 22 or less carbon atoms is preferable.
As the above-mentioned sucrose fatty acid ester, an ester compound in which 5 mol or 6 mol of a monohydric higher alcohol having 12 or more and 22 or less carbon atoms is added to 1 mol of sucrose (sucrose) is preferable.

As the above-mentioned dispersant, at least one selected from the group consisting of polyoxyethylene stearyl ether, polyoxyethylene behenyl ether, and sucrose hexapalmitate is preferable.

In the composition for mascara of the present embodiment, the content of the fibrous material is preferably 0.1% by mass or more and 15% by mass or less, and more preferably 0.5% by mass or more and 10% by mass or less. preferable. When the content of the above fibrous material is 0.5% by mass or more and 10% by mass or less, the long feeling that the eyelashes look long when the composition for mascara is applied to the eyelashes is more sufficiently satisfied without impairing the finish. It has the advantage of being able to give.

The composition for mascara of the present embodiment may contain fibers other than the above-mentioned fibrous material. For example, synthetic resin fibers may be further contained. The ratio of the above-mentioned fibrous material (composed of carbon fibers) to the total of the fibers other than the fibrous material and the fibrous material may be 50% by mass% 100% by mass or less.

The composition for mascara of the present embodiment contains the above-mentioned fibrous material, and the fibrous material is composed of carbon fibers and a coating material covering both ends of the carbon fibers. Therefore, it is possible to prevent the edge of the carbon fiber having relatively high rigidity from directly contacting the skin when or after using the composition for mascara of the present embodiment. Therefore, it is possible to suppress the irritation feeling on the skin while containing carbon fibers having relatively high rigidity.
Further, since the composition for mascara of the present embodiment contains a fibrous material having carbon fibers having relatively high rigidity, the fibrous material is applied to the eyelashes to give a long feeling that the eyelashes look long. Can be done.
Moreover, relatively soft covering materials are arranged at both ends of the fibrous material contained in the composition for mascara of the present embodiment. Therefore, even if the end of the fibrous material hits the skin of the eyelid, the irritation feeling on the skin can be sufficiently suppressed.

The composition for mascara of the present embodiment may contain water, a pigment, a sorbitan structure-containing surfactant and the like in addition to the above-mentioned components. Furthermore, it may contain ingredients to be blended in general cosmetics, external preparations for skin, and the like. The components that can be contained in the composition for mascara of the present embodiment include, for example, polyhydric alcohols, thickeners, clay minerals, moisturizers, hydrocarbon oils, fragrances, preservatives, antioxidants, anti-inflammatory agents, and ultraviolet rays. Ingredients such as absorbents, UV scatterers, vitamins and enzymes can be mentioned. The composition for mascara of the present embodiment is composed of the components described in the quasi-drug raw material standard, the compounding ingredient standard for each cosmetic type, the cosmetic raw material standard, the Japanese Pharmacopoeia, the official standard for food additives, and the like.

Pigments contained in the composition for mascara include inorganic pigments such as iron oxide, carbon black, ultramarine, dark blue, titanium oxide, and zinc oxide, red 202, red 226, yellow 4, yellow 5, and yellow. Examples thereof include organic pigments such as No. 205, No. 1 in blue, and No. 404 in blue.

Examples of the sorbitan structure-containing surfactant contained in the composition for mascara include sorbitan monostearate and polyoxyethylene (20) sorbitan monostearate.

Examples of polyhydric alcohols include dipropylene glycol, glycerin, pentylene glycol, propylene glycol, 1,3-butylene glycol, diglycerin and the like.

The properties of the mascara composition of the present embodiment are not particularly limited, but are usually liquid or viscous (creamy).

Next, an embodiment of the method for producing a mascara composition according to the present invention will be described in detail below.

The method for producing the mascara composition of the present embodiment is as follows.
A coating step of coating carbon fibers with a coating material by stirring a mixture containing carbon fibers and a coating material for coating the carbon fibers (hereinafter, also referred to as a carbon fiber coating step).
The present invention includes a fibrous material obtained by coating carbon fibers with a coating material by a coating step, and a composition preparation step of preparing a composition for mascara containing a solvent.

In the carbon fiber coating step, the carbon fibers can be coated with a coating material by a general method. For example, the carbon fibers can be coated by stirring the mixture containing the above carbon fibers and the above coating material by a general method. Specifically, the mixture can be stirred by putting (immersing) a stirring body such as a stirring blade in the mixture and moving the stirring blade (stirring body) so that the mixture flows.

Preferably, in the carbon fiber coating step, the carbon fibers are coated by stirring the mixture without using a stirrer for stirring. As a result, it is possible to avoid the shape change (breaking, etc.) of the carbon fiber caused by the carbon fiber coming into contact with the stirring body. Therefore, both end edges of the carbon fiber can be reliably covered without impairing the shape.

In the carbon fiber coating step, as a method of stirring the mixture without adding a stirrer, for example, a method of rotating a stirring tank containing the mixture is adopted. Specifically, the mixture is placed in a hollow cylindrical stirring tank that is opened toward one side, and the stirring tank is rotated around the cylindrical shaft of the stirring tank. On the other hand, the stirring tank is rotated around the rotation center point A, which is a point separated by a predetermined length from the upper end of the stirring tank in the opening direction along the cylindrical axis, so as to apply centrifugal force to the mixture in the stirring tank ( Revolve). In the revolution, a predetermined angle (for example, ω 20 ° to 70 °) is set between the straight line extending from the rotation center point A in the direction of gravity and the straight line extending from the rotation center point A in the cylindrical axis direction of the stirring tank. Revolve (swing) the stirring tank. While performing such a revolution, the above-mentioned rotation is also performed. The state of such rotation and revolution is schematically shown in FIG. The rotation directions of rotation and revolution may be either direction.

By revolving the stirring tank while rotating as described above, the mixture contained in the stirring tank flows in all directions. This allows the mixture to be sufficiently agitated.
The method of rotating the stirring tank can be carried out by using, for example, a rotating / revolving (vacuum) mixer product name "Awatori Rentaro" manufactured by Shinky Co., Ltd.

In the carbon fiber coating step, for example, a mixture containing the synthetic resin such as the urethane resin, the synthetic wax, and the dispersant is stirred. At this time, a part of the raw materials constituting the composition for mascara may be contained in the mixture.

In the carbon fiber coating step, when the mixture contains a solvent, the solvent is volatilized from the mixture to obtain a fibrous product.

In the carbon fiber coating step, the urethane resin contained in the mixture may be in the form of particles dispersed in a liquid.

In the composition preparation step, a mascara composition is prepared by mixing the fibrous material previously obtained in the carbon fiber coating step with a solvent. Further, pigments, polyhydric alcohols, thickeners, clay minerals, hydrocarbon oils, preservatives, sorbitan structure-containing surfactants and the like may be mixed. Mixing can be carried out by a general method.

In the composition preparation step, water, ethanol or the like can be used as the solvent to be mixed with the composition for mascara.

The above mascara composition is usually applied to the eyelashes for use. The above mascara composition is, for example, an external preparation for the human body that can be applied to the eyelashes with a brush, and is particularly restricted to the classification of cosmetics, quasi-drugs, pharmaceuticals, etc. under the Pharmaceutical Affairs Law. It does not apply to some areas.

The composition for mascara of the present invention and the method for producing the same are as illustrated above, but the present invention is not limited to the above-exemplified embodiments. Further, in the present invention, various forms adopted in general cosmetics and the like can be adopted as long as the effects of the present invention are not impaired.

In the above-exemplified embodiment, the composition for mascara containing the fibrous material in which both ends of the carbon fiber are coated with the coating material has been described in detail, but the fibrous material is not limited to those in such a state. .. The carbon fiber may be coated with a coating material on only one end edge. In order to cover only one end edge with the coating material, for example, only the tip portion of the relatively long carbon fiber is dipped in the coating material, and then the carbon fiber is cut to a desired length. By repeating such an operation, it is possible to produce a fibrous material in which only one end edge of the carbon fiber is covered with a coating material.

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

(Examples 1 to 4)
The mascara compositions of each example were produced by mixing each raw material (see also Table 3) according to the formulation shown in Table 1. The details are as follows.
(I) The oil phase components shown in Table 3 were stirred and melted at about 90 ° C. The oil phase component, the aqueous phase component uniformly dissolved and dispersed at about 90 ° C. in advance, and the pigment were stirred by a homomixer and subjected to a dispersion treatment. Then, it cooled while stirring to 40 degreeC. Next, polyvinylpyrrolidone, polyimide-1, and alkyl copolymer ammonium acrylate, which had been previously dissolved in water, were added and mixed until uniform.
(II) A part of the above (I) was heated to about 90 ° C., coated carbon fibers (fibrous materials) were added, dispersed with a homodisper, and then cooled to 25 ° C. Subsequently, the remainder of (I) was added and dispersed, and degassed to obtain a composition for mascara.

The details of the fibrous material in each example will be described below (see Table 1).
(* 1)
-Polyoxyethylene behenyl ether (5EO): 34.7 parts by mass-Di (octyldodecyl / phytosteryl / behenyl) lauroyl glutamic acid: 23.1 parts by mass The above two raw materials were stirred and melted at about 90 ° C. Further, the following raw materials were added, and dispersion treatment was performed with a homomixer.
-Polyurethane-34 (32%) aqueous dispersion: 34.7 parts by mass Then, it is mixed with 7.5 parts by mass of carbon fibers (length: 3 mm, thickness: 7 μm, PAN type) and shown in FIG. The coating treatment was performed by such a rotation / revolution (vacuum) mixer.
(* 2)
・ Sucrose hexapalmitate: 4.3 parts by mass ・ Di lauroyl glutamate (octyldodecyl / phytosteryl / behenyl): 5 parts by mass ・ Di lauroyl glutamic acid (cholesteryl / behenyl / octyldodecyl): 5.7 parts by mass It was stirred and melted at about 90 ° C.
Then, it was mixed with 85 parts by mass of carbon fiber (same as * 1 above) and coated with a rotation / revolution mixer.
(* 3)
・ Sucrose hexapalmitate: 8.6 parts by mass ・ Di lauroyl glutamate (octyldodecyl / phytosteryl / behenyl): 10 parts by mass ・ Di lauroyl glutamic acid (cholesteryl / behenyl / octyldodecyl): 11.4 parts by mass It was stirred and melted at about 90 ° C. Further, the following raw materials were added for dispersion treatment.
-Polyurethane-34 (32%) aqueous dispersion: 30 parts by mass Then, it was mixed with 40 parts by mass of carbon fiber (same as * 1 above) and coated with a rotation / revolution mixer.
(* 4)
-Polyoxyethylene stearyl ether (6EO): 32 parts by mass-Di (octyldodecyl / phytosteryl / behenyl) lauroyl glutamic acid: 21 parts by mass The above two raw materials were stirred and melted at about 90 ° C. Further, the following raw materials were added and dispersion treatment was performed with a homomixer.
-Polyurethane-34 (32%) aqueous dispersion: 32 parts by mass Then, it was mixed with 15 parts by mass of carbon fiber (same as * 1 above) and coated with a rotation / revolution mixer.

<Hardness of coating material>
The hardness was measured under the following test conditions using a FUDOH rheometer manufactured by Leotech as a measuring device.
Measurement sample: The dressing prepared as described in * 1 to * 4 was transferred to an ointment jar, left open for one day in a 50 ° C environment, and then left to stand in a 25 ° C environment for one day. Was used as a measurement sample.
Temperature: 25 ° C,
RANGE: 2kg weight,
Adapter: φ (diameter) 5 mm needle,
Sample table speed: 6 cm / min,
Width of approach: 5 mm

(Comparative Examples 1-2)
The mascara compositions of each Comparative Example were produced by mixing each raw material according to the formulation shown in Table 2. Specifically, by adding carbon fibers (the above carbon fibers that have not been coated) or polypropylene fibers (uncoated) to the mascara base (A) in the above-mentioned Examples, dispersion treatment is performed, and degassing is performed. A composition for mascara was obtained.

<Evaluation of use performance of mascara composition>
The irritation and long feeling when each mascara composition was used were sensory evaluated by a plurality of female monitors.
"Evaluation of irritation"
Evaluation was made during normal life. Sensory evaluation was performed on the irritation felt immediately after applying each mascara composition until it was removed by makeup remover or the like. The ratio of the number of people who felt the stimulus to the total number of monitors was calculated.
"Evaluation of long feeling (effect of making eyelashes look longer)"
A visual evaluation was performed on the state immediately after applying each mascara composition. We calculated the ratio of the number of people who evaluated the long feeling to the total number of monitors.

Table 1 shows the evaluation results of the above usage performance.

The mascara composition of the example was suppressed in irritation at the time of application or after application. It is considered that this is because, in the mascara composition of the example, both ends of the carbon fibers were coated with a coating material, and the edges of the carbon fibers could be prevented from directly contacting the skin of the eyelids.
Moreover, the composition for mascara of the example sufficiently had a so-called long effect. It is considered that this is due to the characteristics such as rigidity of the carbon fiber.
On the other hand, the composition for mascara of the comparative example was highly irritating to the skin when it simply contained carbon fibers. Further, the conventional composition for mascara simply containing polypropylene fibers has a slightly long effect.

The composition for mascara of the present invention is used, for example, by being applied to living eyelashes in order to make the eyelashes look beautiful. Specifically, the composition for mascara of the present invention is preferably applied along the longitudinal direction of the living eyelashes, for example, via a brush.

Claims (3)

Contains carbon fiber
A composition for mascara in which at least one edge of the carbon fiber is covered with a dressing. The composition for mascara according to claim 1, wherein the coating material has a hardness of 100 g or more and 1,000 g or less as measured by a rheometer. A method for producing a composition for mascara, which comprises a coating step of coating the carbon fibers with the coating material by stirring a mixture containing the carbon fibers and a coating material for coating the carbon fibers.

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