CN111278423B

CN111278423B - Eyelash cosmetic

Info

Publication number: CN111278423B
Application number: CN201880069075.1A
Authority: CN
Inventors: 龙田友圭里
Original assignee: Yishiban Co ltd
Current assignee: Yishiban Co ltd
Priority date: 2017-10-27
Filing date: 2018-10-25
Publication date: 2023-04-04
Anticipated expiration: 2038-10-25
Also published as: WO2019082953A1; TW201922207A; KR20200078502A; KR102620014B1; JP2019077659A; JP6293345B1; CN111278423A; TWI767078B

Abstract

The mascara of the present invention contains polyurethane and a polar solvent.

Description

Eyelash cosmetic

Technical Field

The present invention relates to an eyelash cosmetic.

Background

Conventionally, there are a waterproof type (hereinafter, WP type) composed of an oil material in which water resistance and curling power are important, and a thin film type (hereinafter, FM type) in which simple cleansing properties are important, which enables makeup removal with warm water without requiring a dedicated makeup remover or the like. However, in recent years, there has been a demand for a makeup remover that has water resistance and curling power and can easily remove makeup.

The FM type includes a type in which a coating film is formed using a urethane emulsion with water as a base material (patent document 1). Although the mascara is easily removed, the curling force is greatly deteriorated as compared with the WP type, and the market demand cannot be satisfied. In particular, since the polyurethane film is soft, it is necessary to add a large amount of an oil component such as wax as in patent document 1 or to increase the glass transition point (Tg) by mixing with an acrylic emulsion as in patent document 2, thereby supplementing the curling force. Patent documents 3 and 4 describe mascara containing polyurethane and propylene carbonate as an active agent for an organic mineral thickener. Patent document 5 describes an eyelash cosmetic containing a high molecular dye, which is characterized by being selected from sulfopolyester, polyamide, polyurethane and polyacrylic polymer, or a mixture thereof.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-126884

Patent document 2: japanese patent laid-open No. 2015-193551

Patent document 3: japanese patent laid-open No. 2008-195732

Patent document 4: japanese patent laid-open No. 2008-120805

Patent document 5: japanese patent application laid-open No. 2000-513002

Disclosure of Invention

As described above, there is still room for improvement in the known mascara, and a new mascara is desired.

The present inventors have conducted extensive studies to solve the above problems, and as a result, have found that the addition of a polar solvent to polyurethane greatly improves the water resistance and stretchability, thereby completing the present invention.

Namely, the present invention relates to the following.

Invention 1

An eyelash cosmetic is an eyelash cosmetic containing polyurethane and polar solvent,

the polar solvent contains at least 1 selected from mono-or dialkyl (C1-C4) ethers of ethylene glycol or ester compounds with C2-C6 carboxylic acids, alkene (C2-C4) carbonate compounds and ketols (C3-C6).

Invention 2

The mascara according to the invention 1, wherein a high molecular dye selected from the group consisting of sulfopolyesters, polyamides, polyurethanes, and polyacrylic polymers, and mixtures thereof is substantially absent.

Invention 3

The mascara according to the invention 1 or 2, wherein the polar solvent contains at least 1 selected from the group consisting of methyl glycol, ethyl glycol, butyl glycol, ethoxy diglycol, butoxy diglycol, dimethoxy diglycol, diethoxy diglycol, 2-ethoxyethyl acetate, hydroxyacetone, and diacetone alcohol.

Invention 4

The mascara according to claim 3, wherein the polar solvent comprises at least 1 selected from the group consisting of methyl glycol, ethyl glycol, butyl glycol, ethoxy diglycol, butoxy diglycol, dimethoxy diglycol, diethoxy diglycol, hydroxyacetone, and diacetone alcohol.

Invention 5

The mascara according to invention 4, wherein the polar solvent contains at least 1 selected from ethoxydiglycol, propylene carbonate and diacetone alcohol.

Invention 6

The mascara according to the invention 5, wherein the polar solvent contains at least 1 selected from ethoxydiglycol and diacetone alcohol.

The eyelash cosmetic of the present invention can strongly hold makeup such as sweat and sebum, and can be easily removed with warm water. In a preferred embodiment, the curl force is high and the finishing degree is excellent.

Drawings

FIG. 1 shows the results of the water resistance test of example 1 (BAYCUSAN C1010 only).

FIG. 2 shows the results of the water resistance test of example 2 (BAYCUSAN C1010+ ethoxydiglycol).

FIG. 3 shows the results of the water resistance test of example 3 (BAYCUSAN C1010+ propylene carbonate)

FIG. 4 shows the results of the water resistance test of example 4 (BAYCUSAN C1010+ diacetone alcohol)

FIG. 5 shows the results of the water resistance test of example 5 (BAYCUSAN C1010+ triethyl citrate)

FIG. 6 shows the results of the water resistance test of example 6 (BAYCUSAN C1010+ ethylglycol)

FIG. 7 shows the results of the water resistance test of example 7 (BAYCUSAN C1010+ butoxydiglycol)

FIG. 8 shows the results of the water resistance test of example 8 (BAYCUSAN C1010+ hydroxyacetone)

FIG. 9 is a photograph of a curl force evaluation test using the formulations of examples 9, 10, 11, 12 and 13

Fig. 10 is a schematic illustration of curl angle measurement.

Detailed Description

While various alternatives may be possible in the invention, specific embodiments of the invention are described in detail herein. However, the detailed description of the specific modes in the present specification is not intended to limit the present invention to the specific modes, and the present invention includes all the alternatives included in the spirit and scope of the present invention defined in the claims.

Definition of

[ eyelash cosmetics ]

Eyelash (eyelash) or makeup for eyelashes are also called mascara, make-up for eyes, making the eyelashes appear thick, long, and/or curly.

The form of the mascara according to the present invention is not particularly limited. Examples thereof include a liquid, an emulsion, a gel, a cream, and a solid.

[ polyurethane ]

The eyelash cosmetic of the present invention contains one or more kinds of polyurethane (urethane resin). The polyurethane may be any cosmetically acceptable polyurethane. Examples thereof include polyurethane-1 to 81 and polyurethane crosslinked polymer-1 to 2 (see list of names of cosmetic ingredients issued by the Japanese society for cosmetics industry, on-Line INFOBASE of the American Personal Care Products Committee (PCPC)), etc. Further, hexamethylene diisocyanate or dicyclohexylmethane diisocyanate as a diisocyanate monomer, and 1,4-butanediol or 1,6-hexanediol as a diol monomer are preferably contained. Examples thereof include polyurethane-32, polyurethane-34, and polyurethane-35. It may be 100% pure or diluted. The diluted polyurethane may be a solution, an emulsion, or a suspension. One or two or more of them may be arbitrarily selected, but the present invention is not limited thereto, and derivatives thereof may be used. The content of the polyurethane is 0.04 to 20% by mass, preferably 0.4 to 16% by mass, and more preferably 1.2 to 12% by mass. If the amount is less than 0.04% by mass, the film of eyelash cosmetic cannot be easily removed with warm water, and if the amount exceeds 20% by mass, a good curling power cannot be obtained.

[ polar solvent ]

The mascara according to the present invention contains one or more polar solvents. The polar solvent functions as a film-forming aid. The polar solvent is not particularly limited as long as it is cosmetically acceptable and has compatibility with both water and oil. Preferably contains at least 1 selected from mono-or dialkyl (C1-C4) ethers of ethylene glycol such as ethylene glycol and diethylene glycol, ester compounds with C2-C6 carboxylic acids, alkylene carbonate (C2-C4) ester compounds as cyclic carbonates, and ketols (C3-C6). Examples thereof include methyl glycol, ethyl glycol, butyl glycol, ethoxy diglycol, butoxy diglycol, dimethoxy diglycol, diethoxy diglycol, 2-ethoxyethyl acetate, ethylene carbonate, propylene carbonate, butylene carbonate, hydroxyacetone, diacetone alcohol and the like (see list of names of cosmetic ingredients, catalog of cosmetic material manufacturers and the like issued by japan cosmetic industry association). One or two or more of them may be arbitrarily selected, but the present invention is not limited thereto, and derivatives thereof may be used. The content thereof is 0.1 to 25% by mass, preferably 0.5 to 20% by mass, and more preferably 1 to 15% by mass. If the amount is less than 0.1% by mass, a satisfactory curling force cannot be obtained, and if the amount exceeds 25% by mass, a smooth feeling in use cannot be obtained, and the feeling in use is deteriorated.

The mascara of the present invention may further contain one or more known cosmetic materials, and those skilled in the art can generally consider that these materials can be blended, as long as the effects of the present invention are not impaired. Examples thereof include volatile oils, surfactants, gelling agents, antiblocking agents, emulsifiers, dispersing agents, stabilizers, humectants, tackifiers, solidifying agents, binders, extenders, opacifiers, lubricants, pigments, ultraviolet scattering agents, ultraviolet absorbers, pH adjusters, antioxidants, antibacterial agents, preservatives, skin care agents, lubricants, astringents, emollients, brighteners, antifoaming agents, water-repellent coating agents, and protectants. These materials having 2 or more applications and effects can be used.

In one embodiment of the present invention, the mascara according to the present invention contains substantially no hard wax. The hard wax is a lipophilic compound which is solid at ambient temperature (25 ℃) and has reversible solid/liquid state change and has a melting point of 30 ℃ or higher, and exhibits hardness of more than 5MPa at 20 ℃. Here, "substantially not contained" means that the eyelash cosmetic of the present invention does not contain an amount that impairs sebum resistance and/or ease of warm water washing, and for example, means that the eyelash cosmetic does not contain an amount exceeding 12 mass% (or 12 mass% or more), and more preferably does not contain an amount exceeding 5 mass% (or 5 mass% or more).

In one embodiment of the present invention, the mascara according to the present invention does not substantially contain the complex resin core-shell type polymer emulsion. Here, the composite resin core-shell type polymer emulsion is obtained by sequentially performing the following steps (1) to (4), and in the step (1), 94:6 to 92:8 (mass ratio) 2 polypropylene glycols, polypropylene glycol having a number average molecular weight of 1000 and polypropylene glycol having a number average molecular weight of 2000, were used, and the ratio of the component (a) to the component (b) in the mixed solution was (a): (b) components (pure component mass ratio) =50: 50-60: 40 in the composite resin core-shell polymer emulsion, the steps (1) to (4) are:

(1) A step of reacting polypropylene glycol, dimethylolpropionic acid and an aliphatic or alicyclic polyisocyanate in the presence of a polymerizable monomer (component (b)) having a glass transition temperature of 95 to 105 ℃ as a polymerizable monomer containing an ester group-containing (meth) acrylic monomer and having a polymer obtained by polymerizing the polymerizable monomer, thereby producing a urethane prepolymer (component (a)) containing an isocyanate group and a carboxyl group, thereby obtaining a mixed solution of the component (a) and the component (b),

(2) Neutralizing the carboxyl group contained in the component (a) in the mixture of the component (a) and the component (b) obtained in (1) with an equivalent amount of triethanolamine to obtain a mixture of a neutralized product of the component (a) and the component (b),

(3) A step of emulsifying and dispersing the mixture of the neutralized product of the component (a) and the component (b) obtained in the step (2) in an aqueous medium to obtain an emulsion,

(4) And (c) polymerizing the component (b) in the emulsion obtained in (3) to obtain a composite resin core-shell polymer emulsion.

"substantially not containing" means, for example, not containing an amount exceeding 1 mass% in terms of solid content (or 1 mass% or more), and more preferably not containing an amount exceeding 0.5 mass% in terms of solid content (or 0.5 mass% or more).

In one embodiment of the present invention, the mascara according to the present invention is substantially free of high molecular weight dyes selected from sulfopolyesters, polyamides, polyurethanes, and polyacrylic polymers, and mixtures thereof.

"substantially not contained" means, for example, not containing an amount exceeding 1 mass% (or 1 mass% or more), and more preferably not containing an amount exceeding 0.5 mass% (or 0.5 mass% or more).

The mascara according to the present invention can be prepared according to the common technical knowledge of those skilled in the art and according to the conventional formulation examples. The method, order, and the like of mixing the components are arbitrary according to the technical common knowledge of those skilled in the art.

Examples

The present invention will be described in further detail below with reference to specific examples, but the technical scope of the present invention is not limited to these examples. The composition can be appropriately adjusted by those skilled in the art according to the required water resistance, ease of warm water washing, curling force, and other conditions. The amounts (contents) of the additives in the following examples and comparative examples are all% by mass.

< comparison with polar solvent 1 >

Sample preparation

As the coating agent, polyurethane-35 (BAYCUSAN C1010 (containing about 40% of polyurethane-35)), manufactured by Covestro Deutschland AG was used.

In each example, each polar solvent was added so that the content of each polar solvent was 10% based on the total amount of the film forming agent.

For the sebum resistance, water resistance, ease of warm water washing, drying property, stability, and breaking strength (in the case of immersion in water), a sample obtained by spreading a mixture of a coating agent and a polar solvent by a 60 μm spreading blade on a glass plate and drying the spread sample for 2 hours was used as a sample.

The stretchability was evaluated by using a sample obtained by pouring 2g of a mixture of a coating agent and a polar solvent into a silicone mold, drying the mixture in a thermostatic bath at 45 ℃ for 3 hours or more to form a uniform and thick film, cutting out a coating film taken out of the mold by 0.2cm × 5cm, placing a 5kg weight thereon, flattening the film, and cooling the sample.

Evaluation test

Sebum resistance

Artificial sebum (tricaprylin/tricaprin (o.d.o, manufactured by riqing oirityou group (ltd)) was dropped on the sample by 2 drops, left to stand for 1 minute, wiped off, and then the surface state was observed and evaluated by 5 panelists according to the following criteria, and the evaluation shown in table 1 was made by the same panelists.

O: … envelope did not change

And (delta): … coating was slightly tacky

X: … films were significantly tacky and peeled

Water resistance (24 hours immersion test)

The sample was immersed in water at room temperature for 24 hours, and the images were taken at 5 seconds, 10 minutes, 30 minutes, 60 minutes, and 24 hours. FIG. 1 shows an example of preparing a sample using only a coating agent (example 1). Fig. 2 to 8 show examples in which samples were prepared using ethoxydiglycol (example 2), propylene carbonate (example 3), diacetone alcohol (example 4), triethyl citrate (example 5), ethylglycol (fig. 6), butoxydiglycol (fig. 7) or hydroxyacetone (fig. 8), respectively, as polar solvents.

The coating film is considered to be clouded by swelling in water. Examples 1 and 5 after 60 minutes, the sample was dispersed in water in the immersion liquid.

The imaging results were evaluated in 2 stages by 5 panelists according to the following criteria, and the results were matched among all panelists, and the evaluations shown in table 1 were performed.

O: good water resistance

X: poor water resistance

Easiness of warm water washing

The test piece was immersed in warm water at about 40 ℃ for 10 seconds, kneaded about 10 times with the fingers of 5 panelists, and evaluated according to the following criteria. The evaluation results were shown in Table 1 when all the members were matched.

O: … Total shed

And (delta): … shed 5 to 9 about

X: … does not fall off

The term "exfoliation" means dissolution or exfoliation.

Drying Property

The time from the instant when the sample was applied onto the glass plate to the time when the color of the film became transparent was measured by 5 panelists, and the average value was obtained and evaluated according to the following criteria.

O: less than 7 minutes

And (delta): 7 minutes or more and less than 9 minutes

X: over 9 minutes

Stability of

Each sample was placed in a glass bottle, and the state of each sample after standing at 45 ℃ for 1 week to 1 month was evaluated by 5 panelists based on the following criteria by visual observation and viscosity measurement. All the members were matched and evaluated as shown in table 1.

O: … with no change

And (delta): … slightly increases viscosity and reduces viscosity

X: … significantly increased viscosity and reduced viscosity, and had aggregates or produced gas.

Breaking strength (when immersed in water)

The samples were immersed in warm water at about 40 ℃ and pulled by hands by 5 panelists, and the sensory evaluation of the breaking strength was evaluated in terms of 1 (very weak) to 5 (very strong), and the average values thereof were evaluated in accordance with the following criteria.

O: 3.5 or more

And (delta): 1.5 or more and less than 3.5

X: less than 1.5

Elasticity and flexibility

The test piece was pulled by hand by 5 panelists, and the sensory evaluation of stretchability was evaluated from 1 (no stretching at all) to 5 (good stretching), and the average value thereof was evaluated according to the following criteria.

O: 4.0 or more

And (delta): 2.5 or more and less than 4.0

X: less than 2.5

The evaluation results are shown in table 1. Examples 1, 3 and 5 are comparative examples. Examples 2, 4 and 6 to 8 are examples.

[ Table 1]

/>

As a result of the experiment, stability was improved in the present invention as compared with the comparative example using propylene carbonate as a polar solvent. Further, improvement in drying property was also confirmed. Further, in some cases, the stretchability is also improved, or the breaking strength in the case of immersion in water is also improved.

< crimping force >

Formulation of

2 mascara compositions were formulated according to Table 2.

[ Table 2]

* 1. Lan Biaobai beeswax ( printed honey ), sanmukuchen chemical industry (strain)

* 2. Carnauba wax, east Asian chemical plant

* 3. Cellogen F-SH, first Industrial pharmaceutical (Strain)

* 4-Arabic gum powder, made by Sakai made from Sakai

Evaluation method

False eyelashes (Girl's Secret 01, a vendor, elizabeth (strain)) were prepared and each 1 bundle was disassembled. One of the 1 bundle of eyelash was attached to an upright plastic plate (see fig. 9 and 10) with the root of the false eyelash vertically downward, curled with an eyelash curler, and applied with eyelash cosmetics of the above formulation (examples 9 to 13) 30 times. The angle from the curled bottom to the tip of eyelash before and after 5 minutes of application was measured (see fig. 9 and 10). The measurement results are shown in table 3.

[ Table 3]

As a result of the test, the formulation of example 10 has improved curling force as compared with the comparative example (example 9). This is thought to be caused by the improvement in dryness and stretchability. That is, the film is considered to shrink more strongly during drying, and the curling power is considered to be improved. When ethoxydiglycol was changed from 10% (example 10) to 0.1% (example 11) relative to the sum of the film forming agent and the polar solvent, the formulation of example 11 did not exhibit as high a curling force as the formulation of example 10, but a curling force higher than the ratio of 9 (no polar solvent) was obtained. This effect was also confirmed when the film-forming agent concentration was low (the sum of the film-forming agent and the polar solvent was changed from 30% (example 10) to 1% (example 12)).

Claims

1. An eyelash cosmetic comprises a polyurethane selected from the group consisting of polyurethane-32, polyurethane-34 and polyurethane-35 and a polar solvent, and is substantially free of a high molecular weight dye selected from the group consisting of sulfopolyester, polyamide, polyurethane and polyacrylic polymer and mixtures thereof,

the polar solvent contains at least 1 selected from the group consisting of methyl glycol, ethyl glycol, butyl glycol, ethoxy diglycol, butoxy diglycol, dimethoxy diglycol, diethoxy diglycol, hydroxyacetone and diacetone alcohol.

2. The mascara according to claim 1, wherein the polar solvent comprises at least 1 selected from the group consisting of ethoxydiglycol and diacetone alcohol.