JP7458878B2 - Liquid composition for decoration - Google Patents

Description

The present invention relates to a liquid composition for decorating the surface of solid cosmetics such as lipstick, eye shadow, and foundation.

In solid cosmetics such as lipsticks, eye shadows, and foundations, pearl agents with luster (such as titanium mica) are used on the surface of the cosmetics to create a beautiful appearance that can attract the attention of consumers. The technique of decorating with patterns and letters is important.

Decorating the surface of the cosmetic is done by using a liquid composition in which a pearl agent is dispersed in a liquid medium, and spraying this onto the surface of the solid cosmetic from the tip of a nozzle using an inkjet printing method. In this case, since the atomized droplets are repelled by the surface of the oil-based solid cosmetic, it is difficult to bring the pearl agent into close contact with the surface of the cosmetic to draw a pattern or the like.

In addition, pearl agents with relatively large particle sizes tend to settle in liquid compositions, making it difficult to maintain a uniformly dispersed state in the liquid, resulting in unstable decoration on the surface of cosmetics. Not only that, but it also tends to cause clogging in the nozzle, causing problems such as interruptions in the mass production process.

Furthermore, if the decorative coating formed on the surface of the cosmetic after drying the liquid composition is strong, it will be difficult to scoop out the cosmetic, impairing usability. For this reason, it is desirable to make the decorative coating film brittle to some extent to avoid a situation where the original usability of the cosmetic is impaired.

Therefore, it is important to develop a highly stable decorative liquid composition that beautifully decorates the surface of cosmetics and is suitable for mass production.

Japanese Patent Application Publication No. 2008-174712

An object of the present invention is to provide a highly stable decorative liquid composition that is suitable for mass production and that allows a pearlescent agent made of titanium mica or the like to adhere to the surface of a solid cosmetic.

As a result of the research conducted by the present inventors to solve the above problems, it was discovered that by using a liquid composition for decoration that uses ethanol as a medium and contains a suitable thickener, it is possible to reliably adhere the pearlescent agent to the surface of a solid cosmetic product, and to beautifully decorate the surface of the cosmetic product, and that by adding a nonionic surfactant, the decorative coating film becomes more likely to crumble, and this can be prevented from impairing the original usability of the cosmetic product, which led to the completion of the present invention.

That is, the present invention is a decorative liquid composition used for decorating the surface of a solid cosmetic, which is characterized by containing the following components (a) to (c).
(a) Ethanol (b) (Dimethylacrylamide/acryloyldimethyltaurine Na) crosspolymer
(c) Pearl agent

The present invention also provides a liquid composition for decoration used to decorate the surface of a solid cosmetic, which further contains (d) a nonionic surfactant.

Furthermore, the present invention is a solid cosmetic whose surface is decorated with a decorating liquid composition used to decorate the surface of the solid cosmetic.

Furthermore, the present invention provides a method for decorating a solid cosmetic, characterized in that the liquid cosmetic composition used for decorating the surface of the solid cosmetic is sprayed onto the surface of the solid cosmetic. It is a method of decoration.

The liquid composition for decoration of the present invention allows the lustrous pearlescent agent to be securely attached to the surface of a solid cosmetic product, making it possible to beautifully decorate the cosmetic surface.

The decorative liquid composition of the present invention will be explained in detail below.

The liquid composition for decoration is characterized by containing (a) ethanol, (b) a thickener, and (c) a pearlizing agent.

The ethanol component (a) is contained as a solvent in the liquid composition for decoration of the present invention. Ethanol has low viscosity and excellent drying properties, so each component in a dissolved or dispersed state can be easily sprayed in mist form, and since it dries in a short time after decoration, the time required for the decoration process can be shortened.

As the thickener component (b), one having the effect of thickening ethanol can be used, and for example, hydroxypropylcellulose, (dimethylacrylamide/acryloyldimethyltaurine Na) crosspolymer, etc. can be used.

The pearl agent (c) is a plate-shaped or spherical powder exhibiting interference color, pearlescent luster, or metallic luster, and is widely used in the fields of paints and cosmetics. When the surface of an oil-based solid cosmetic is decorated with a pearlescent agent having such luster, the decorated patterns, letters, etc. are highlighted with glitter, and an excellent aesthetic appearance can be provided.

Examples of plate-like pearling agents include titanium mica, titanium mica coated with iron oxide, titanium mica coated with carmine, titanium mica coated with carmine and carmine, titanium mica treated with iron oxide and carmine, titanium mica treated with iron oxide, and mica treated with iron oxide and carmine. Titanium, titanium mica treated with chromium oxide, titanium mica treated with black titanium oxide, aluminum powder coated with acrylic resin, aluminum powder coated with silica, mica coated with titanium oxide, bismuth oxychloride coated with titanium oxide, talc coated with titanium oxide, mica coated with colored titanium oxide, oxidized Examples include titanium-coated synthetic mica, titanium oxide-coated silica, titanium oxide-coated alumina, titanium oxide-coated glass powder, polyethylene terephthalate/polymethyl methacrylate laminated film powder, bismuth oxychloride, fish scale foil, and the like.

Specific examples of these commercially available products include BASF's CLOIZONNE series, MERCK's COLORONA (registered trademark) series, TIMIRON (registered trademark) series, CQV's Cosmetica series, and Nihon Koken Kogyo Co., Ltd.'s TWINCLEPEARL (registered trademark). series, Nippon Sheet Glass Co., Ltd.'s Metashyain (registered trademark) series, and the like.

Spherical pearlescent agents include composite powders in which the surface of spherical silicon dioxide, alumina, calcium carbonate, barium sulfate, nylon, polyethylene, polystyrene, polymethyl methacrylate, etc. is coated with titanium dioxide, titanium oxide, zinc oxide, zirconium oxide, iron oxide, etc., and these composite powders are described in JP-A-11-236315.

The particle size of the pearl agent is preferably 6 to 110 μm, more preferably 6 to 70 μm, and particularly preferably 6 to 50 μm. By using a pearl agent with such a particle size, it is possible to stably spray the pearl agent dispersion from an inkjet nozzle, and it is also possible to obtain excellent usability in cosmetics after drying. . The blending amount of the pearl agent is in the range of 0.1 to 70% by mass.

(d) By blending a nonionic surfactant as an ingredient, the decorative coating film formed on the surface of the solid cosmetic becomes easily disintegrated, resulting in the coating peeling off from the cosmetic surface at the beginning or during use. This problem can be effectively solved. The user can scoop up the cosmetic while breaking down the paint film little by little, and can smoothly apply makeup. In particular, when the thickener is a cellulose thickener such as hydroxycellulose, adding a nonionic surfactant can make the coating film easier to crumble.

The nonionic surfactant of component (d) may be lipophilic or hydrophilic and can be appropriately selected and blended.

Examples of lipophilic nonionic surfactants include sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, and penta-2 - Sorbitan fatty acid esters such as diglycerol sorbitan ethylhexylate and diglycerol sorbitan tetra-2-ethylhexylate; monocottonseed oil fatty acid glycerin, glycerin monoerucate, glycerin sesquioleate, glycerin monostearate, α, α'-pyrooleate Glycerin polyglycerin fatty acids such as glycerin glutamate, glycerin monostearate and malic acid; propylene glycol fatty acid esters such as propylene glycol monostearate, hydrogenated castor oil derivatives, glycerin alkyl ether, polyoxyethylene/methylpolysiloxane copolymer Examples include merging.

Examples of the hydrophilic nonionic surfactant include POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, and POE-sorbitan tetraoleate; POE-sorbit fatty acid esters such as POE-sorbitol, POE-sorbitol monooleate, POE-sorbitolpentaoleate, POE-sorbitol monostearate; POE-glycerol monostearate, POE-glycerol monoisostearate, POE-glycerol triiso POE glycerin fatty acid esters such as stearate; POE fatty acid esters such as POE monooleate, POE distearate, POE monodioleate, ethylene glycol cystearate; POE lauryl ether, POE oleyl ether, POE stearyl ether, POE behenyl ether, POE 2-octyl POE alkyl ethers such as dodecyl ether and POE cholestanol ether; POE alkylphenyl ethers such as POE octyl phenyl ether, POE nonylphenyl ether, and POE dinonylphenyl ether; Pluaronic types such as Bluronic; POE/POP cetyl ether; POE/POP alkyl ethers such as POE/POP2-decyltetradecyl ether, POE/POP monobutyl ether, POE/POP hydrogenated lanolin, POE/POP glycerin ether; Tetra-POE/tetra-POP ethylenediamine condensates such as Tetronic; POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisostearate, POE hydrogenated castor oil triisostearate, POE hydrogenated castor oil monopyroglutamic acid monoisostearate diester, POE hydrogenated castor oil maleic acid, etc. Hydrogenated castor oil derivatives; POE beeswax and lanolin derivatives such as POE sorbit beeswax; alkanolamides such as coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, POE propylene glycol fatty acid ester, POE alkylamine, POE fatty acid Examples include amide, sucrose fatty acid ester, POE nonylphenyl formaldehyde condensate, alkyl ethoxydimethylamine oxide, and trioleyl phosphoric acid.

As the nonionic surfactant of component (d), the exemplified compounds may be used alone or in appropriate combinations.

The decorating liquid composition of the present invention is sprayed from an inkjet nozzle and adheres to the surface of solid cosmetics such as lipstick, eye shadow, foundation, etc., making it possible to decorate the cosmetics beautifully. However, the same effect can be obtained not only by inkjet but also by other methods.

Furthermore, decoration with the liquid decorative composition is not limited to oil-based solid cosmetics such as lipsticks and hair sticks, but can be used in a wide range of solid cosmetics such as powder solid cosmetics such as eye shadows and foundations.

The results of evaluation tests conducted on the liquid decorative composition of the present invention are described as examples.

The sample was prepared by first preparing a solution in which oil, a thickener, and a nonionic surfactant were dissolved in ethanol, and then adding 10 parts by mass of pearl agent as an outpart to 100 parts by mass of this solution. did.

Each sample was sprayed onto the surface of a lipstick using an inkjet, and after drying, the adhesion (printability) of the coating film was evaluated. If the adhesion of the coating film (printability) was good, it was judged as ○ (pass), and if some chipping or peeling was observed, it was judged as × (fail).

For the inkjet, a Holbein airbrush was used, with the following conditions: nozzle diameter: 0.2 mm, spray pressure: 0.15 MPa, spray volume: 0.03 ml/sec, spray time: 1 sec.

Inkjet nozzle clogging was evaluated based on the ability to continuously spray on the surfaces of 10 lipsticks filled in a dish-shaped container. If the nozzle was able to spray continuously on the surfaces of 10 lipsticks without clogging, it was judged as ○ (pass), and if the nozzle was clogged and the spray could not be sprayed continuously on the surfaces of 10 lipsticks, it was judged as × (fail). .

Next, the ease of applying the cosmetic (usability) was evaluated to see if the coating gradually disintegrated during use and whether an appropriate amount of the cosmetic could be applied smoothly.

Ease of application (disintegrability of the paint film) was evaluated based on the state in which the paint film disintegrated when the lipstick was used during a normal makeup operation. If the paint film gradually disintegrated and the lipstick could be used without any problems, it was determined as ○ (pass), and if the paint film did not collapse and problems occurred in using the lipstick, it was determined as × (fail).

Table 1 shows the results of evaluation of coating film adhesion (printability) and inkjet nozzle clogging. As shown in Table 1, good evaluation results were confirmed for the samples (Test Examples 1 to 9) containing components (a) to (c).

Table 2 shows the results of an evaluation of the ease of application of the cosmetic (disintegration of the coating film). In Test Examples 10 to 14, which contained hydroxypropyl cellulose as component (b), it was confirmed that the inclusion of polyoxyethylene hydrogenated castor oil as component (d) improved the evaluation of the ease of application of the cosmetic (disintegration of the coating film).

Claims (4)

A liquid composition for decoration used to decorate the surface of a solid cosmetic, characterized by containing the following components (a) to (c).
(a) Ethanol (b) (Dimethylacrylamide/acryloyldimethyltaurine Na) crosspolymer
(c) Pearl agent The liquid composition for decoration used for decorating the surface of a solid cosmetic according to claim 1, further comprising (d) a nonionic surfactant. A solid cosmetic whose surface is decorated with a decorating liquid composition used for decorating the surface of the solid cosmetic according to claim 1 or 2. A solid cosmetic, characterized in that the liquid cosmetic composition used for decorating the surface of the solid cosmetic according to claim 1 or 2 is sprayed onto the surface of the solid cosmetic to decorate the surface of the solid cosmetic. Decoration method.