JP7249293B2 - Decorative powder dispersion composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to a decorating powder dispersion composition for decorating the surface of solid cosmetics such as eyeshadow, foundation and lipstick.

For solid cosmetics such as eye shadows, foundations, and lipsticks, in order to create a beautiful appearance that can attract the attention of consumers, a glossy titanium mica (pearl agent) is used on the surface of the cosmetic. Techniques for decorating, such as expressing characters and characters, are important.

The inkjet printing method sprays a dispersion of powder paint onto the object to be coated from the tip of a nozzle, so printing can be performed without applying pressure to the surface of the object to be coated. When a powder coating containing titanium mica (pearl agent) having a large diameter is used, the agglomerated powder causes clogging in the nozzle for ejecting the dispersion liquid, making continuous work difficult.

On the other hand, if a thickening agent is added to the dispersion liquid of the powder coating in order to suppress the aggregation of the powder inside the nozzle, a film is formed on the surface of the cosmetic after drying. In some cases, it becomes difficult to remove cosmetics, making it difficult to use them.

Therefore, in order to beautifully decorate the surface of the cosmetic, it is possible to stably decorate the powder coating containing titanium mica (pearl agent) having luster using an inkjet printing method, and furthermore, after drying, There is a demand for the development of a decorative powder dispersion composition that can exhibit excellent usability in cosmetics.

JP 2008-174712 A

In order to decorate the surface of solid cosmetics beautifully, the present invention can stably jet a powder coating containing a pearlescent agent by an inkjet printing method, and exhibits excellent usability in dried cosmetics. An object of the present invention is to provide a decorative powder dispersion composition capable of

As a result of studies conducted by the present inventors in order to solve the above problems, a decorative powder dispersion composition containing an appropriate amount of a predetermined thickener and a pearlescent agent can be stably decorated using an inkjet printing method. In addition, the cosmetic after drying exhibits excellent usability, leading to the completion of the present invention.

That is, the present invention provides (A) 100 parts by weight of an aqueous solution in which 0.1 to 0.8% by mass of a thickening agent composed of one or more selected from agar, quince seed, and pectin is dissolved, B) A solid cosmetic whose surface is decorated with a decorative powder dispersion composition containing 2 to 30 parts by weight of a pearlescent agent.

Further, the present invention is a solid cosmetic whose surface is decorated with a powder dispersion composition for decoration, wherein the aqueous solution of the component (A) further contains a surfactant having an HLB of 9 to 9.5. .

The present invention also provides a method for decorating a solid cosmetic, which comprises spraying the powder dispersion composition for decorating onto the surface of the solid cosmetic for decoration.

According to the decorative powder dispersion composition of the present invention, the surface of a solid cosmetic can be stably decorated by using an inkjet printing method, and the decorated and dried cosmetic has excellent usability. It is possible to demonstrate

Diagram showing the results of a comparative test of thickeners (some photographs substituted for drawings)

The decorative powder dispersion composition of the present invention is described in detail below.

The decorative powder dispersion composition comprises (A) 100 parts by weight of an aqueous solution in which 0.1 to 0.8% by mass of a thickening agent composed of one or more selected from agar, quince seed, and pectin is dissolved; 2 to 30 parts by weight of (B) a pearling agent.

The thickening agent used in the aqueous solution of component (A) may be any one of agar, quinseed, and pectin, or any combination thereof. The blending amount of the thickening agent is 0.1 to 0.8% by mass with respect to the total amount of the aqueous solution. If the amount of the thickener is less than 0.1% by mass, the pearlescent agent aggregates in the inkjet nozzle, making it difficult to stably jet the decorative powder-dispersed composition. In addition, when the amount of the thickener exceeds 0.8% by mass, the coating film formed on the surface of the cosmetic after drying becomes strong, the coating film does not collapse during use, and the makeup under the coating film does not collapse. It becomes difficult to scoop up the fee.

In addition, the aqueous solution of component (A) can be blended with aqueous components commonly used in the field of cosmetics or pharmaceuticals. Examples of water-soluble components include lower alcohols such as ethanol, propanol, butanol, pentanol, and hexanol, glycerin, diethylene glycol, butylene glycol, polyethylene glycol, hexylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, Mucoitin sulfate, caroninic acid, atelocollagen, elastin, amino acids, nucleic acids, cholesteryl-12-hydroxystearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adducts, Moisturizers such as Isaiyobara extract, Capricornis extract, Melilot extract and the like are included.

The (B) component pearlescent agent is a plate-like or spherical powder exhibiting interference color, pearly luster, or metallic luster, and is widely used in the fields of paints and cosmetics. When the surface of the solid cosmetic is decorated with such a lustrous pearl agent, the patterns, letters, etc., which are decorated by the decoration, exhibit brilliance and are emphasized, and an excellent aesthetic feeling can be provided.

Plate-like pearl agents include, for example, mica titanium, iron oxide-coated mica titanium, carmine-coated mica titanium, carmine/conjo-coated mica titanium, iron oxide/carmine-treated mica titanium, konjo-treated mica titanium, iron oxide/conjo-treated mica. Titanium, chromium oxide-treated mica titanium, black titanium oxide-treated mica titanium, acrylic resin-coated aluminum powder, silica-coated aluminum powder, titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, colored titanium oxide-coated mica, oxide 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 the CLOIZONNE series from BASF, the COLORONA (registered trademark) series from MERCK, the TIMIRON (registered trademark) series, the Cosmetica series from CQV, and the TWINCLEPEARL (registered trademark) from Nihon Koken Kogyo Co., Ltd. series, Nippon Sheet Glass Co., Ltd.'s Metashin (registered trademark) series, and the like.

As the spherical pearl agent, 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. Coated composite powders are mentioned, and these composite powders are described in JP-A-11-236315.

The particle size of the pearlescent agent is preferably 6 to 110 μm, more preferably 6 to 70 μm, particularly preferably 6 to 50 μm. By using a pearlescent agent having such a particle size, a dispersion of the pearlescent agent can be stably jetted from an inkjet nozzle, and moreover, excellent usability can be obtained in the cosmetic after drying. .

The amount of the component (B) pearlescent agent to be blended is 2 to 30 parts by weight per 100 parts by weight of the aqueous solution of the component (A). When the pearlescent agent is blended in such an amount, the surface of the cosmetic can be beautifully decorated, and the decorating operation can be stably continued without causing clogging of the inkjet nozzle. If the amount of the pearlescent agent is less than 2 parts by weight, a sufficient decorating effect cannot be obtained.

In addition, the aqueous solution of component (A) may contain pigments and functional powders. By blending pigments and functional powders, it is possible to further improve the appearance and usability. Moreover, these powders may be subjected to surface treatment or the like to appropriately adjust the dispersibility.

The aqueous solution of component (A) may further contain a surfactant with an HLB of 9 to 9.5. The aqueous solution of component (A) can be blended with pigments, functional powders, and the like. Usability may not be fully demonstrated. By blending a surfactant with an HLB of 9 to 9.5 in the aqueous solution of component (A), it is possible to eliminate poor dispersion of pigments and prevent problems such as color unevenness.

The decorative powder-dispersed composition of the present invention is sprayed from an inkjet nozzle and adheres to the surface of solid cosmetics such as eyeshadow, foundation, and lipstick, enabling the solid cosmetics to be beautifully decorated. However, it is not necessarily limited to inkjet, and similar effects can be obtained when applying by other methods.

The solid cosmetics to be decorated are not particularly limited as long as they are solid cosmetics such as makeup cosmetics such as foundation, eye shadow, lipstick, and lip balm, and hair cosmetics such as hair sticks. However, powdery solid cosmetics such as foundations and eye shadows are particularly preferable as solid cosmetics for exhibiting beautiful decorative effects with pearl agents. Moreover, the solid cosmetic is not limited by the molding method, and wet molding, dry molding, oily molding, and the like can be widely adopted.

An effect confirmation test conducted on the powder dispersion composition for decoration of the present invention will be described as an example.

The sample was prepared by first preparing an aqueous solution by dissolving a predetermined amount of a thickening agent such as agar in water, and then blending a predetermined amount of a pearlescent agent or the like as an outpart with 100 parts by weight of this aqueous solution. .

FIG. 1 shows the result of examining the type of thickener to be blended in component (A). Inkjet ejection properties (nozzle clogging resistance) and usability were evaluated for samples containing various thickeners. For the usability, it was confirmed whether the coating film formed on the surface of the cosmetic could be easily disintegrated and the cosmetic could be sufficiently scooped out during use.

Ejectability was evaluated using an airbrush manufactured by HOLBEIN under the conditions of nozzle hole diameter: 0.2 mm, injection pressure: 0.15 MPa, injection amount: 0.03 ml/second, and injection time: 1 second. Nozzle hole diameter: 0.1 to 0.8 mm, injection pressure: 0.1 to 0.3 MPa, injection amount: 0.03 to 0.15 ml/sec, injection time: 1 to 5 seconds. similar evaluation results.

Usability (coating film disintegration) was evaluated by rubbing the surface of the decorated solid cosmetic (eye shadow) once with a makeup brush in a usual makeup operation, and evaluating the degree of disintegration of the coating film (panel 10 people).

As shown in FIG. 1, the sample containing bentonite as a thickener could not be sprayed because the nozzle was clogged, and the cosmetic could not be decorated (Comparative Example 1). Also, with xanthan gum, a firm coating film was formed on the surface of the cosmetic, and the cosmetic could not be scooped off (Comparative Example 2). It was confirmed that samples containing agar, quince seed, and pectin as thickeners all gave good results.

Table 1 shows the results of examining the blending amount of the thickener. Samples (Examples 4 to 8) containing 0.1 to 0.8% by mass of a thickening agent (agar) gave good results in both usability (coating film disintegration) and ejection (nozzle clogging). was made.

Table 2 shows the result of examining the compounding amount of the pearlescent agent. The samples (Examples 9 to 13) in which 2 to 30 parts by weight of the pearlescent agent were blended gave good results in terms of dischargeability (nozzle clogging) and appearance (decoration).

Table 3 shows the results of examining the influence of the type of surfactant on dispersibility for samples in which pearlescent agents and pigments were blended as out parts. Samples (Examples 14 and 15) in which a surfactant having an HLB of 9 to 9.5 was blended in an aqueous solution exhibited good dispersibility, confirming excellent color development by the pigment.

Claims (3)

(A) 100 parts by weight of an aqueous solution in which 0.1 to 0.8% by mass of a thickening agent composed of one or more selected from agar, quince seed, and pectin is dissolved;
against
(B) 2 to 30 parts by weight of a pearl agent;
A solid cosmetic whose surface is decorated with a decorative powder dispersion composition comprising: 2. A solid cosmetic whose surface is decorated with the powder dispersion composition for decoration according to claim 1, wherein the aqueous solution of component (A) further contains a surfactant having an HLB of 9 to 9.5. A method for decorating a solid cosmetic, comprising spraying the powder dispersion composition for decorating according to claim 1 or 2 onto the surface of the solid cosmetic for decoration.

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