JP6964326B2 - Lip cosmetics and their manufacturing method - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention is excellent in a smooth feeling of use, a glossy feeling, and a moisturizing feeling, as well as an excellent function of preventing secondary adhesion (color transfer) and storage stability, and a lip cosmetic having a high design and a method for producing the same. Regarding.

Lip cosmetics have an important element of preventing secondary adhesion (color transfer) to clothes and cups, and are being actively researched and developed.

For example, Patent Document 1 discloses a lipstick composition containing a volatile oil agent having a secondary adhesion prevention function and a film-forming agent.

Further, Patent Document 2 proposes a lipstick containing a specific ratio of hydrogenated polyisobutene and phenyl-modified silicone oil as a so-called "difficult-to-remove lipstick".

Patent Document 3 describes that a multicolor oil-based solid cosmetic is produced by double molding.

Japanese Unexamined Patent Publication No. 9-48709 Patent No. 4757950 Patent No. 5425540

However, with the combination of the volatile oil agent and the film-forming agent as in Patent Document 1, the dry feeling tends to be strong as the characteristics of use, and it is difficult to obtain a product that is satisfactory in terms of moisturizing feeling, glossy feeling, and smoothness.

Even with respect to a specific combination of hydrogenated polyisobutene and phenyl-modified silicone as in Patent Document 2, it is difficult to obtain a particularly moisturizing one, and in lip cosmetics, sweating and separation tend to occur, and storage is often stable. Sex control was difficult.

Further, Patent Document 3 obtains a multicolor oil-based solid cosmetic from the viewpoint of designability, and is not intended to improve the function of the lip cosmetic. Therefore, no prescription studies have been conducted to obtain functions such as secondary adhesion prevention function and stability.

In view of the above, the present invention provides a lip cosmetic and its production which are excellent in smooth use feeling, glossiness and moisturizing feeling, as well as in secondary adhesion (color transfer) prevention function and storage stability. The challenge is to provide a method.

As a result of diligent studies to solve the above problems, the present inventor has formed a composition (A) and a composition (B) containing a specific component in a specific ratio in a state where they are not mixed with each other. We have found a lip cosmetic and a method for producing the same, which show the desired effect, and have completed the present invention.

That is, the present invention includes the composition (A) containing the following components (a1) to (a2) and the composition (B) containing the following components (b1) to (b4), and the composition (A) and the composition ( B) is a lip cosmetic which is separated into a molded product in a state where it is not mixed with each other.
(A) (a1) Solid wax having a melting point of 60 ° C. or higher 5 to 30% by mass
(A2) Phenyl-modified silicone and / or methylpolysiloxane 40-95% by mass
(B) (b1) Solid wax having a melting point of 60 ° C. or higher 5 to 30% by mass
(B2) Heavy liquid isoparaffin
(B3) Ester oil having a viscosity at 20 ° C. of 5,000 mPa · s or more (b4) Colorant 0.1 to 20% by mass

The present invention is a molded product by pouring a composition (A) containing the following components (a1) to (a2) and a composition (B) containing the following components (b1) to (b4) in a state where they are not mixed with each other. It is also a method for producing lip cosmetics, which is characterized by having the above-mentioned steps.
(A) (a1) Solid wax having a melting point of 60 ° C. or higher 5 to 30% by mass
(A2) Phenyl-modified silicone and / or methylpolysiloxane 40-95% by mass
(B) (b1) Solid wax having a melting point of 60 ° C. or higher 5 to 30% by mass
(B2) Heavy liquid isoparaffin
(B3) Ester oil having a viscosity at 20 ° C. of 5,000 mPa · s or more (b4) Colorant 0.1 to 20% by mass

The lip cosmetic of the present invention is excellent not only in smooth feeling of use, glossiness and moisturizing feeling, but also in secondary adhesion (color transfer) prevention function and storage stability. Furthermore, it also has a high degree of design. Further, according to the production method of the present invention, it is possible to efficiently produce lip cosmetics having such characteristics.

The lip cosmetic of the present invention is characterized in that the composition (A) and the composition (B) are contained in a molded product in a separated state.
That is, in the present invention, it is prepared as a composition (A) containing phenyl-modified silicone and / or methylpolysiloxane (component (a2)) which is difficult to be compatible with other components in one lip cosmetic and solid wax. However, it is characterized in that it is separated from the composition (B) containing the coloring material and molded into two or more layers.

As a result, it is spread evenly on the lips due to the share at the time of application, but after a while, phenyl-modified silicone and / or methylpolysiloxane separates as a transparent layer on the surface side of the lips, and later. It is thought that it can be made into a state where a lip coat is applied. As a result, the present invention is excellent not only in a smooth feeling of use, a glossy feeling, and a moisturizing feeling, but also in a secondary adhesion (color transfer) prevention function.

In addition, by forming the composition (A) and the composition (B) into separate molded products, it is possible to prevent oil oozing out, which is seen in cosmetics in which these are mixed, and it is also excellent in storage stability. can do.
Hereinafter, the present invention will be described in detail.

(A solid wax having a melting point of the component (a1) in the composition (A) and the component (b1) in the composition (B) of 60 ° C. or higher)
The solid wax (A) (a1) of the present invention having a melting point of 60 ° C. or higher is an oily component that is solid at room temperature and can be used without particular limitation as long as it is used in ordinary cosmetics. Specific examples thereof include ozokerite, selecin, paraffin, microcrystalline wax, synthetic hydrocarbon wax, polyethylene wax, (ethylene / propylene) copolymer, carnauba wax, candelilla wax, beeswax, alkyl-modified silicone wax, and the like, which are preferably used. Will be done.

As a solidifying agent, the solid wax maintains an appropriate hardness in lip cosmetics, suppresses exudation of liquid oil, and imparts moisture. The melting point is preferably 60 ° C to 130 ° C. If the melting point is less than 60 ° C, it becomes difficult to maintain the stick-like shape, and if the melting point exceeds 130 ° C, it becomes difficult to dissolve.

The melting point can be easily measured according to the Japanese Pharmacopoeia by using a commercially available automatic melting point measuring device.

The above solid wax can be used alone or in combination of two or more, and the content is 5 to 30% by mass, preferably 10 to 25% by mass in the composition (A). If it is less than 5% by mass, it becomes difficult to maintain the stick-like shape, and if it exceeds 30% by mass, the spread becomes heavy, and it is difficult to produce a product that is satisfactory in terms of moisturizing feeling, glossiness, and smoothness.

As the component (a1) in the composition (A) and the component (b1) in the composition (B), basically the same ones can be used. In the actual composition of the cosmetic, the same one may be used, or different ones may be used depending on the purpose. The blending amount can be the same, and the amount of solid wax in the composition (B) can be in the same range as in (A) described above.

(Component (a2) Phenyl-modified Silicone and / or Methylpolysiloxane in Composition (A))
(A) (a2) In phenyl-modified silicone and / or methylpolysiloxane, the phenyl-modified silicone has a phenyl group as part of the polysiloxane, and is not particularly limited as long as it is usually used for cosmetics. Can be used. Specific examples thereof include phenyltrimethicone, diphenyldimethicone, diphenylsiloxyphenyltrimethicone, trimethylsiloxyphenyldimethicone, and trimethylpentaphenyltrisiloxane, and commercially available products include SH-556 Fluid and FZ-209 (Toray Dow Corning). KF-50-100cs, KF-50-1000cs, KF-53, KF-54, KF-54HV, KF-56A, (Shin-Etsu Chemical Co., Ltd.), BELLSILPDM20, BELLSILPDM100 (Asahi Kasei Wacker Silicone Co., Ltd.), PH- 1560 Glossy Fluid (Toray Dow Corning, etc.) can be mentioned.

The above-mentioned methylpolysiloxane is a polymer in which the end of dimethylpolysiloxane is sealed with a trimethylsiloxy group, and is widely used as the most typical silicone oil. Various kinematic viscosities according to the degree of polymerization are commercially available, and among ^{them, those having a kinematic viscosity of 100 to 5,000 mm 2} / s are preferably used.
It is preferable to use methylpolysiloxane in part or all of the above component (a2) from the viewpoint of obtaining better performance in terms of secondary adhesion prevention performance.

The content of (A) (a2) phenyl-modified silicone and / or methylpolysiloxane is preferably 40 to 95% by mass, more preferably 50 to 85% by mass in the composition (A). If it is less than 40% by mass, it becomes difficult to obtain lip cosmetics having a high secondary adhesion (color transfer) prevention function. If it exceeds 95% by mass, it becomes difficult to maintain the stick-like shape.

(Component (b2) Heavy Liquid Isoparaffin in Composition (B))
(B) (b2) Heavy fluid isoparaffin is a mixture of saturated type long-chain hydrocarbons having a hydrogenated side chain including a double bond at the terminal in the copolymerization of isobutene and n-butene. Depending on the polymerization conditions, those having various degrees of polymerization can be obtained. Examples of commercially available products include Pearl Dream 18 (number average molecular weight 1000), Pearl Dream 24 (number average molecular weight 1350), Pearl Dream 46 (number average molecular weight 2650) (NOF Corporation) and the like. In particular, a material having a number average molecular weight of about 1,000 is preferably used because it is easy to obtain a moisturizing feeling, a glossy feeling, and a smooth feeling of use.

The content of the B (b2) heavy liquid isoparaffin is not particularly limited, but is preferably 10 to 60% by mass, more preferably 15 to 50% by mass in the composition (B). If the content is less than 10% by mass, it becomes difficult to obtain a moisturizing feeling, a glossy feeling, and a smooth feeling of use, and in addition, the secondary adhesion (color transfer) prevention function is reduced. If it exceeds 60% by mass, stickiness occurs and it becomes difficult to obtain a smooth usability.

(Ester oil having a viscosity of component (b3) of composition (B) at 20 ° C. of 5,000 mPa · s or more)
(B) (b3) The ester oil having a viscosity of 5,000 mPa · s or more at 20 ° C. may be in the form of a liquid or a paste. Specifically, diisostearyl malate, polyglyceryl monoisostearate, polyglyceryl-2 triisostearate, dipentaerythrityl tripolyhydroxystearate, dipentaerythrityl pentaisostearate, phytosteryl oleate, macadamia nut fatty acid phytosteryl, tetra (hydroxystearic acid / isostearic acid). ) Dipentaerythrityl, dipentaerythrit hexaoxystearate, dilauroyl glutamate (octyldodecyl / phytosteryl / behenyl), dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), dimer dilinoleyl bis Examples thereof include (behenyl / isostearyl / phytosteryl), dimer dilinoleyl dimer dilinoleic acid, hydrogenated castor oil dimer dinorate, (polyglycerylul isostearate 2 / dimer dilinoleic acid) copolymer and the like. Among them, dilauroyl glutamic acid (octyldodecyl / phytosteryl / behenyl), dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), and dimer dilinoleic acid hydrogenated castor oil prevent secondary adhesion (color transfer). It is preferably used because it contributes to functional improvement. The above ingredients are marketed by Nisshin Oillio Co., Ltd., Nippon Fine Chemical Co., Ltd., Higher Alcohol Co., Ltd., etc.

As the ester oil of the above (b3), one kind or two or more kinds can be used, and the content is not particularly limited. It is preferably 0.5 to 50% by mass, more preferably 3 to 30% by mass in the composition (B). If it is less than 0.5% by mass, it becomes difficult to obtain a moisturizing feeling, a glossy feeling, and a smooth feeling of use, and in addition, the secondary adhesion (color transfer) prevention function is reduced. If it exceeds 50% by mass, stickiness occurs and it becomes difficult to obtain a smooth feeling of use.

The viscosity in the above can be measured with a B-type viscometer (Bismetron, Shibaura System Co., Ltd.) rotor No. 4 and a rotation speed of 6 rpm.

(Component (b4) Colorant in Composition (B))
The colorants (B) and (b4) can be used without particular limitation as long as they are usually used in cosmetics. Specifically, white inorganic pigments such as titanium oxide, zinc oxide, cerium oxide, barium sulfate, iron oxide, carbon black, titanium / titanium oxide sintered product, chromium oxide, chromium hydroxide, dark blue, ultramarine blue, lithium titanate. Colored inorganic pigments such as cobalt and manganese violet, talc, white mica, gold mica, red mica, black mica, synthetic mica, silk mica (serisite), synthetic sericite, silicon dioxide, aluminum oxide, magnesium oxide, zirconium oxide, White constitution powder such as antimony oxide, aluminum silicate, aluminum magnesium metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, barium sulfate, hydrotalcite, hydroxyapatite, boron nitride, etc., oxidation Titanium-coated mica, titanium oxide-coated bismuth oxychloride, iron oxide mica titanium, dark blue-treated mica titanium, carmine-treated mica titanium, titanium oxide-coated synthetic gold mica, titanium oxide-coated glass powder, titanium oxide / iron oxide-coated glass powder, oxychloride Bright powders such as bismuth, fish scale foil, polyethylene terephthalate / aluminum / epoxy laminated powder, polyethylene terephthalate / polyolefin laminated film powder, polyethylene terephthalate / polymethylmethacrylate laminated film powder, red 201, red 202, red 205, Organic pigment powders such as red 226, red 228, orange 203, orange 204, blue 404, and yellow 401, dyes such as red 223, red 218, and orange 201, red 3, red. Organic pigment powders such as zirconium, barium or aluminum lake such as 104, red 106, orange 205, yellow 4, yellow 5, green 3 and blue 1, and metals such as aluminum powder, gold powder and silver powder. Examples thereof include composite powders such as powder, fine particle titanium oxide-coated mica titanium, fine particle zinc oxide-coated mica titanium, barium sulfate-coated mica titanium, titanium oxide-containing silicon dioxide, and zinc oxide-containing silicon dioxide, and these are one or two. It can be used more than a species or in combination. Further, those which have been surface-treated by a known method using a fluorine compound, metallic soap, a surfactant, lecithin, an amino acid, an oil agent, a hydrocarbon and the like may be used.

As the colorant of (b4), one kind or two or more kinds can be used. The content is 0.1 to 20% by mass, preferably 0.5 to 15% by mass in the composition (B). If it is less than 0.1% by mass, the makeup effect (makeup effect) as a lip cosmetic cannot be exhibited, and if it exceeds 20% by mass, the spread becomes heavy, and the moisturizing feeling, glossiness and smoothness are satisfied. It's hard to get what you get.

The composition (A) preferably does not contain a colorant. By doing so, the composition (A) can come as an uncolored transparent layer after being applied on the lips, and it is possible to reproduce a state in which a transparent lip coat is applied later. It is preferable in that respect.

In addition to the above essential ingredients, the lip cosmetics of the present invention include liquid oils, semi-solid oils, solid oils, surfactants, preservatives, and antioxidants, if necessary, as long as the effects of the present invention are not impaired. Medicinal ingredients such as agents, thickeners, fragrances, UV absorbers, UV scatterers, dyes, pigments, moisturizers, whitening agents and anti-inflammatory agents can be appropriately added. These components may be blended with any of the composition (A) and the composition (B).

The ratio of the blending amounts of the composition (A) and the composition (B) of the present invention is not particularly limited, but the mass ratio is preferably in the range of 1: 0.5 to 1: 3, preferably 1: 0.6 to 1. The range of 1: 2 is more preferable. Within this range, the finish will have a smooth feel, luster, and moisturization while having a sufficient secondary adhesion (color transfer) prevention function.

Moreover, the lip cosmetic of the present invention may use three or more compositions. That is, two or more compositions having different compositions in either or both of the composition (A) and the composition (B) may be combined to form a multicolor cosmetic having three or more colors. By doing so, it is possible to obtain a cosmetic having a particularly excellent design.

The lip cosmetic of the present invention preferably has a composition in which the composition (A) forms an inner layer and the composition (B) forms an outer layer. Thereby, the above-mentioned effect can be preferably exhibited.
The form of the lip cosmetic of the present invention is not particularly limited, but it is particularly preferable that the lip cosmetic has a stick shape.

The method for producing a lip cosmetic of the present invention is particularly limited as long as it is produced so that the composition (A) and the composition (B) can be separated and present in a molded product in a non-mixed state. It's not like that. However, it is necessary not to mix the composition (A) and the composition (B) at the time of preparation. An example of such a manufacturing method will be described below. The present invention is not limited to the following production method examples.

First, the composition (B) melted by heating to 85 to 110 ° C. is poured into a mold whose central portion is shielded, cooled and solidified. Since the composition (B) does not enter this shielding portion, a solidified composition (B) can be obtained only in the peripheral portion. After that, by excluding the shielding portion, a molded product of the composition (B) having a hollow central portion can be obtained.

The present invention exists as a layer in which the composition (A) and the composition (B) are separated by pouring the melted composition (A) heated to 85 to 110 ° C. into the central portion of the cavity and cooling and solidifying the composition (A). Molded product can be obtained.

In the above production method, the molding procedure of the composition (A) and the composition (B) may be reversed. Further, the shape of the shielding portion can be adjusted to any shape such as a cylinder and a polygonal prism. Further, in order to obtain a visual effect, it is possible to select a shape in which design is added.

The shape of the molded product in the above manufacturing method is not particularly limited as long as it can be used as a lip cosmetic, but a stick shape, which is a general shape, is preferable.

Hereinafter, the present invention will be described in detail with reference to examples. The present invention is not limited to these examples. The blending amount is shown in% by mass unless otherwise specified.

(Examples 1 to 6, Comparative Examples 1 to 7 (lipstick))
A stick-shaped lipstick having the composition shown in Table 1 below was prepared according to the method shown below.

(Production method)
(1) The composition (B) was heated to 90 to 100 ° C. and uniformly mixed and melted. Further, the composition (B) in a state where the central portion was hollowed out was obtained by pouring it into a cylindrical mold in which the central portion was shielded, cooling and solidifying, and then removing the shielding portion.
(2) The composition (A) was heated to 90 to 100 ° C. and uniformly mixed and melted. Further, it was poured into the central part hollowed out in (1) and cooled and solidified.
(3) (2) was inserted into a cylindrical container to obtain a lipstick in which different compositions of (A) and (B) were molded into a single stick.
Only in Comparative Example 7, unlike the above production method, the compositions (A) and (B) were mixed before molding and then produced as a single-layer cosmetic.

The lipsticks produced above (Examples 1 to 6 and Comparative Examples 1 to 7) were evaluated for their use characteristics according to the evaluation methods shown below.

(Evaluation method)
We asked 20 cosmetics specialist panels to use the lipsticks of the above-mentioned Examples and Comparative Examples. Each person makes an absolute evaluation according to the following criteria whether or not there is sufficient luster and whether or not the "moisturizing feeling" feels moisturized when attached to the lips, and the average score of all panels is evaluated according to the following criteria. Judged.
<Evaluation criteria>
(Score): (Evaluation)
5 points: Good 4 points: Somewhat good 3 points: Normal 2 points: Somewhat bad 1 point: Bad <Judgment criteria>
(Judgment): (Average score)
◎: 4.5 points or more ○: 4 points or more and less than 4.5 points △: 3 points or more and less than 4 points ×: 3 points or less

"Storage stability (sweat, separation)" is determined by repeating a cycle test (1 cycle 24 hours) of cosmetics at -5 to 40 ° C 15 times, visually observing sweating and separation, and using the following criteria. bottom.
<Criteria>
(Evaluation): (Judgment)
Almost no sweating or separation: ◎
Slight sweating and separation: ○
Sweating and separation are seen: △
Significant sweating and separation: ×

Regarding the "secondary adhesion prevention function", each sample was applied to the lips, and one hour later, water was drunk in a pottery cup (white), and the color traces attached to the cup were visually observed and judged according to the following criteria. ..
<Criteria>
(Evaluation): (Judgment)
Almost no color on the cup: ◎
The cup is slightly colored: ○
The cup is colored: △
The cup is significantly colored: ×

Tables 1 and 2 show the composition of the produced lipstick and the evaluation results of the above-mentioned use characteristics.

The product names of the component numbers in Tables 1 and 2 are as follows.
* 1: Lip wax A-4 (manufactured by Japan Natural Products Co., Ltd.)
* 2: Silicone KF-54 (manufactured by Shin-Etsu Chemical Co., Ltd.)
* 3: SH-556 Fluid (manufactured by Toray Dow Corning)
* 4: Silicone KF-56A (manufactured by Shin-Etsu Chemical Co., Ltd.)
* 5: Silicone KF-96A-100cs (manufactured by Shin-Etsu Chemical Co., Ltd.)
* 6: Pearl Dream 18 (manufactured by NOF CORPORATION)
* 7: Cosmall 222 (manufactured by Nisshin Oillio Group)
* 8: Plandoll-H (manufactured by Nippon Fine Chemical Co., Ltd.)
* 9: Cosmall 43N (manufactured by Nisshin Oillio Group)
* 10: Sarakos WO-6 (manufactured by Nisshin Oillio Group)
* 11: Risocasta DA-H (manufactured by Higher Alcohol Industry Co., Ltd.)
* 12: Eldu PS-306 (manufactured by Ajinomoto Co., Inc.)
* 13: TIMIRON SPLENDID RED (manufactured by Merck & Co., Ltd.)
Flamenco Super Pearl (manufactured by Engelhard)
* 14: Metashine MT1080RY (manufactured by Nippon Sheet Glass Co., Ltd.)
* 15: Plate-shaped barium sulfate H (manufactured by Sakai Chemical Industry Co., Ltd.)

As is clear from the results in Tables 1 and 2, Good results were obtained in all the evaluation items in Examples 1 to 6 as compared with Comparative Examples 1 to 7.
More specifically, in Comparative Example 1 in which the component (b2) was not blended and Comparative Example 2 in which the component (b3) was not blended, the smooth usability was inferior and the moisturizing feeling was not satisfactory. In Comparative Example 3 and Comparative Example 4 in which the blending amount of the component (a2) was small, although the smooth feeling of use was excellent, the secondary adhesion (color transfer) prevention function was inferior. Further, in Comparative Example 4 in which the blending amount of the component (b1) is small and Comparative Example 5 in which the blending amount of the component (a1) is small, the moldability is poor and the storage stability is poor, and the comparison in which the blending amount of the component (b1) is large. In Comparative Example 6 in which the blending amount of the component (a1) was large in that of Example 5, no satisfactory feeling of smooth use and moisturizing was obtained. In Comparative Example 7, the composition (A) and the composition (B) were mixed without being separated from each other to form a single stick. Comparative Example 7 was also inferior in storage stability. From these comparisons, it is clear that the composition (A) and the composition (B) can be separated and molded to obtain lip cosmetics having excellent various performances.

According to the present invention, a lip cosmetic having excellent designability, which is excellent in smooth use feeling, glossiness, and moisturizing feeling, as well as excellent secondary adhesion (color transfer) prevention function and storage stability. Obtainable.

Claims (2)

The composition (A) containing the following components (a1) to (a2) and the composition (B) containing the following components (b1) to (b4) are contained, and the composition (A) and the composition (B) are mixed with each other. A lip cosmetic that is separated into a molded product in a disagreeable state.
(A) (a1) Solid wax having a melting point of 60 ° C. or higher 5 to 30% by mass
(A2) Phenyl-modified silicone and / or methylpolysiloxane 40-95% by mass
(B) (b1) Solid wax having a melting point of 60 ° C. or higher 5 to 30% by mass
(B2) Heavy liquid isoparaffin
(B3) Ester oil having a viscosity at 20 ° C. of 5,000 mPa · s or more (b4) Colorant 0.1 to 20% by mass A step of forming a molded product by pouring a composition (A) containing the following components (a1) to (a2) and a composition (B) containing the following components (b1) to (b4) in a state where they are not mixed with each other. A method for producing a lip cosmetic, which is characterized by having.
(A) (a1) Solid wax having a melting point of 60 ° C. or higher 5 to 30% by mass
(A2) Phenyl-modified silicone and / or methylpolysiloxane 40-95% by mass
(B) (b1) Solid wax having a melting point of 60 ° C. or higher 5 to 30% by mass
(B2) Heavy liquid isoparaffin
(B3) Ester oil having a viscosity at 20 ° C. of 5,000 mPa · s or more (b4) Colorant 0.1 to 20% by mass