JP2023088121A - liquid composition - Google Patents

Abstract

To provide a liquid composition excellent in re-dispersibility.SOLUTION: Provided is a liquid composition comprising (A) a powder, (B) a nonpolar silicone oil, (C) a silicone surfactant, (D) a lower alcohol, and (E) water.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a liquid composition such as a cosmetic that contains powder and water and is shaken (redispersed) before use.

BACKGROUND ART A liquid composition which is a liquid formulation containing a powder, and which, when left standing, has the appearance of sedimentation of the powder component and separated into layers, is widely used in cosmetics and the like. Such cosmetics can provide a dry feel due to the powder, in addition to the feeling of use due to the ingredients contained in the liquid phase.

Since such a liquid composition is used after uniformly redispersing the powder components by shaking, it is required that the powder components have good redispersibility. Various studies have been made to improve the redispersibility of powder components in liquid compositions containing powder. For example, when silica is used as the powder, it has been considered to improve the dispersibility by combining a material that assists the dispersion of the powder.

Many polar oils have been used as a material to assist such dispersion, but the type of oil and application method have been studied, but simply changing the polar oil to a non-polar oil does not improve redispersibility. It was hard to get the effect. In particular, it has been difficult to improve redispersibility in compositions with a high alcohol content.

In addition, the use of surfactants, emulsified particles, and the like as materials for assisting dispersion is being studied. For example, Patent Document 1 discloses a cosmetic composition in which silica is combined with polyether-modified silicone having an HLB of 5 to 10 as a surfactant. However, according to the study of the present inventors, a composition that can be redispersed more easily and uniformly is desired. Furthermore, it is desired to slow down the powder sedimentation velocity when left standing in a dispersed state.

International Publication No. 2011/111828

An object of the present invention is to provide a liquid composition having excellent redispersibility and a low powder sedimentation velocity.

According to the present invention, the following inventions are provided.
[1] (A) powder,
(B) a non-polar silicone oil,
(C) a silicone surfactant,
A liquid composition comprising (D) a lower alcohol and (E) water.
[2] The composition of [1], wherein the component (A) is silica.
[3] Component (B) is dimethylpolysiloxane, methylphenylpolysiloxane, caprylylmethicone, diphenylsiloxyphenyltrimethicone, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexa The composition according to [1] or [2], which is selected from the group consisting of siloxanes.
[4] The composition according to any one of [1] to [3], wherein the HLB of component (C) is 1.0 to 4.8.
[5] The composition according to any one of [1] to [4], wherein component (C) is a polyether-modified silicone surfactant.
[6] The cosmetic according to any one of [1] to [5], wherein component (D) is an alcohol having 1 to 4 carbon atoms.
[7] The cosmetic according to any one of [1] to [6], wherein the content of component (B) is 0.05 to 10% by mass based on the total mass of the cosmetic.
[8] The cosmetic according to any one of [1] to [7], wherein the content of component (C) is 0.01 to 3% by mass based on the total mass of the cosmetic.
[9] The composition according to any one of [1] to [8], further comprising (E) a nonionic surfactant.
[10] The cosmetic according to [9], wherein the component (E) has an HLB of 1.0 to 12.0.
[11] The composition according to any one of [1] to [10], which has a viscosity of 1,000 mPa·s or less.

The liquid composition according to the present invention has excellent redispersibility of the powder component, and the powder component can be easily redispersed uniformly by simply shaking by hand, and the powder hardly settles out from the dispersed state. .

Specific description of the invention

The liquid composition according to the present invention (hereinafter sometimes simply referred to as "composition material") has the property of separating into at least two layers, a powder layer and a liquid layer, when left standing. The liquid layer may be composed of one layer or more than two layers, and when the liquid layer is composed of two or more layers, even if each layer is clearly separated and laminated, each layer is mixed and suspended. may be

The composition according to the invention is
(A) powder,
(B) a non-polar silicone oil,
(C) a silicone surfactant,
(D) a lower alcohol, and (E) water.

Each component contained in the two-layer cosmetic according to the present invention is described below.

(A) Powder

The (A) powder blended in the composition according to the present invention is not particularly limited as long as it is a powder that can be blended in cosmetics and the like. The shape and size of the powder in the powder cosmetic of the present invention are not particularly limited. It also includes those with surface treatment and those without surface treatment.

Specific examples of powders include inorganic powders such as extender pigments (e.g., silica, talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, red mica, biotite, permiculite, magnesium carbonate , calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluoroapatite, hydroxyapatite, Ceramic powder, metal soap (e.g. zinc myristate, calcium palmitate, aluminum stearate), boron nitride, zeolite, aluminum potassium sulfate (baked alum), etc.); resin powder (e.g. polyamide resin powder (nylon powder), polyethylene powder, polyalkyl acrylate powder such as polymethyl methacrylate, polystyrene powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, crosslinked silicone powder, etc.); White pigments (e.g., titanium oxide, zinc oxide, etc.); inorganic red pigments (e.g., iron oxide (red iron oxide), iron titanate, etc.); inorganic brown pigments (e.g., γ-iron oxide, etc.); inorganic yellow pigments (e.g., yellow iron oxide, ocher, etc.); inorganic black pigments (e.g., black iron oxide, low order titanium oxide, etc.); inorganic purple pigments (e.g., manganese violet, cobalt violet, etc.); inorganic green pigments (e.g., , chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine blue, navy blue, etc.); pearl pigments (e.g., titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, coloring titanium oxide coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium, or aluminum lake (e.g., red No. 201, red No. 202, red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, and Blue 404, Red 3, Red 104 No., Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3 and Blue No. 1, etc. ); natural pigments (eg, chlorophyll, β-carotene, etc.), and the like. Among these, inorganic powder is preferred, and silica is particularly preferred.

The content of the powder (component (A)) in the composition according to the present invention is usually 0.1-20% by mass, preferably 0.5-15% by mass, more preferably 1-10% by mass. When the content of the powder component is high, for example, 0.1% by mass or more, it is preferable because it improves the dry feeling when applied to the skin. Moreover, when the content of the powder component is low, for example, 20% by mass or less, sufficient redispersibility can be obtained.

(B) a non-polar silicone oil,
The (B) non-polar silicone oil blended in the composition according to the present invention is a silicone having a linear, branched, cyclic, or three-dimensional network polysiloxane as a main skeleton, and has a polar group. It is not Therefore, the non-polar silicone oil preferably has a hydrocarbon group such as an alkyl group or an aryl group or a halogen as a substituent other than hydrogen for the polysiloxane of the main chain polysiloxane.

Component (B) can be arbitrarily selected from non-polar silicone oils as described above, and examples include dimethylpolysiloxane, methylphenylpolysiloxane, caprylyl methicone, diphenylsiloxyphenyl trimethicone, methylhydrogenpolysiloxane, octamethylcyclo A compound selected from the group consisting of tetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane is preferably used.

Although the molecular weight of the component (B) is not particularly limited, generally those having a degree of polymerization of 2000 or less are preferably used. Such non-polar silicone oils are in oily form at room temperature.

In order to strongly express the effects of the present invention, the content of component (B) is preferably 0.05 to 10% by mass, preferably 0.1 to 5% by mass, based on the total mass of the composition. It is more preferable to have

(C) Silicone-Based Surfactant The (C) silicone-based surfactant blended in the composition according to the present invention has a polysiloxane skeleton in its structure and a hydrophilic group in its side chain. Examples of such silicones include polyether-modified silicones, polyether/alkyl co-modified silicones, polyglycerin-modified silicones, and polyglycerin/alkyl co-modified silicones. Among these, polyether-modified silicone is more preferred.

Various types of such silicone surfactants are known, for example, PEG-10 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, PEG-3 dimethicone, PEG -12 Dimethicone, PEG-10 Methyl Ether Dimethicone, PEG-11 Methyl Ether Dimethicone, Cetyl PEG/PPG-10/1 Dimethicone, Dimethicone/(PEG-10/15)) Crosspolymer, (PEG-15/Lauryl Polydimethylsiloxy) ethyl dimethicone) crosspolymer and the like.

This component (C) has a higher affinity for water than the component (B). However, if the hydrophilicity is too high, the effect of improving the redispersibility of the composition tends to be small. Therefore, the HLB of component (C) is preferably 1.0 to 4.8, more preferably 1.5 to 4.5.

The content of component (C) is preferably 0.01 to 3% by mass, preferably 0.03 to 1% by mass, based on the total mass of the composition, in order to strongly express the effects of the present invention. It is more preferable to have

(D) Lower Alcohol As the (D) lower alcohol blended in the composition according to the present invention, those used in general cosmetics and medical compositions can be employed. This component (D) is generally a lower alcohol having 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, and specific examples include ethanol, methanol, propanol, butanol, isopropanol, and the like. can. Among these, ethanol is preferably used.

The content of lower alcohol in the composition of the present invention is generally 10-70% by mass, preferably 30-60% by mass. By containing a lower alcohol in the composition, the lower alcohol volatilizes when applied to the skin, thereby imparting a refreshing feeling. In the present invention, the content of lower alcohol is high, so that the components (B) and (C) are easily dissolved in the lower alcohol. At this time, excessive dissolution of the component (B) or the component (C) may reduce the effect of improving the redispersibility. For this reason, it is preferable to set the content of component (B) and component (C), affinity to alcohol, HLB, etc. within specific ranges.

(E) Water The composition according to the present invention further contains water in addition to the above components. As water, water used in cosmetics, quasi-drugs, etc. can be used, and for example, purified water, ion-exchanged water, tap water, etc. can be used.

(F) Nonionic Surfactant The composition according to the present invention contains the above components (A) to (E) as essential components, but may optionally contain other components. (E) A nonionic surfactant can be mentioned as such a component. When component (B) is used as an active agent, the sedimentation speed of the powder tends to increase, but the sedimentation speed can be adjusted by combining a nonionic surfactant. However, the effect tends to vary depending on the affinity of the nonionic surfactant for alcohol and HLB. Therefore, the HLB of component (E) is preferably 1.0 to 12.0, more preferably 1.5 to 10.

Such nonionic surfactants can be selected from those used in cosmetics and medical compositions, and those having a polyalkylene oxide structure are preferably used. Nonionic surfactants having such a polyalkylene oxide structure include polyoxyethylene monoalkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene monoesters and polypropylene glycol monoesters. , polybutylene glycol monoester, polyoxyethylene fatty acid glyceryl, mono-fatty acid polyoxyethylene glyceryl, tri-fatty acid polyoxyethylene glyceryl, polyoxyethylene hydrogenated castor oil, and polyoxyethylene alkyl ether.

(G) Other Components The cosmetic composition according to the present invention may contain other components in addition to the components (A) to (E) and in addition to the component (F), as long as the effects of the present invention are not impaired. . Other ingredients include, for example, preservatives (e.g. sodium benzoate, ethylparaben, butylparaben, chlorphenesin, phenoxyethanol, etc.), antioxidants (e.g. tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, etc.). ), fragrance, cooling agent, moisturizer, water-soluble polymer, thickener, film agent, UV absorber, chelating agent, polyhydric alcohol, sugar, amino acid, organic amine, polymer emulsion, pH adjuster, skin nutrition drugs, vitamins and the like. Oils other than the component (B) and surfactants other than the component (C) can be combined, but when used, they are preferably used within a range that does not impair the effects of the present invention.

Generally, in a composition containing a powder, a high viscosity tends to improve the dispersion stability of the powder, and a low viscosity tends to improve the redispersibility. From this point of view, the viscosity of the composition is preferably 1,000 mPa·s or less.

Since the composition according to the present invention contains a relatively high content of lower alcohol and contains a powder component that dries quickly and gives a smooth feeling, it is suitable for antiperspirant/deodorant cosmetics and skin care cosmetics. there is In such applications, the composition should be less irritating to the skin and preferably have a pH of about 4.5-8.

The composition according to the invention is provided in any containerized form. For example, when the composition according to the present invention is used as a skin care cosmetic, it is preferably contained in a dispenser container, a bottle container, a mist container, or a roll-on container. Although the cosmetic according to the present invention contains powder, it has excellent redispersibility of the powder component, so that it can be applied uniformly without clogging nozzles of dispenser containers and mist containers.

The present invention will be described using various examples as follows. In addition, the present invention is not limited at all by these examples. Moreover, unless otherwise specified, the content is % by mass with respect to the total amount.

The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the contents are shown in % by mass.

[Example 1 and Comparative Examples 1 to 3]
A composition was prepared by blending each component so as to have the content shown in Table 1. The properties of the resulting composition were evaluated according to the following criteria.

[Redispersibility evaluation 1 and 2]
100 mL of the composition is placed in a lidded container approximately 2 cm in diameter and approximately 25 cm in height. After the container containing the composition was turned upside down 10 times to mix the powder in the composition completely, it was allowed to stand on a horizontal place to allow the powder in the composition to settle. After standing still, shake vigorously again by hand, the number of times until the sediment deposited on the bottom of the container peels off from the bottom of the container (re-dispersibility evaluation 1), and the number of times until the powder in the container is completely dispersed. (Redispersibility evaluation 2) was measured. It can be said that the smaller the number of times, the better the redispersibility.

[Examples 2 to 10]
A composition was prepared by blending each component so as to have the content shown in Table 1. The properties of the resulting composition were evaluated according to the following criteria. These compositions were subjected to sedimentation volume measurement as well as redispersibility evaluation. The composition of Example 1 was also evaluated in the same manner.

[Evaluation of sedimentation volume]
100 mL of the composition is placed in a lidded container approximately 2 cm in diameter and approximately 25 cm in height. The container is graduated to 100 mL. The container containing the composition was turned upside down 10 times to mix and completely disperse the powder in the composition, and then left standing on a horizontal place. At 1 minute, 2 minutes, and 5 minutes after standing, the height of the sediment layer in the container was measured, and the sediment volume (sedimentation volume) was measured. The numerical value is the value obtained by reading the numerical value described on the container. It can be said that the larger this value is, the slower the sedimentation speed is and the more difficult it is to sediment.

From the above results, it can be seen that in the powder-containing composition having a high alcohol content, when the oil is non-polar silicone oil, the redispersibility is improved as compared to those using other oils. And by combining a silicone surfactant. It can be seen that the redispersibility is further improved and the sedimentation velocity is slowed down.

Claims (11)

(A) powder,
(B) a non-polar silicone oil,
(C) a silicone surfactant,
A liquid composition comprising (D) a lower alcohol and (E) water. 2. The composition of claim 1, wherein component (A) is silica. Component (B) consists of dimethylpolysiloxane, methylphenylpolysiloxane, caprylylmethicone, diphenylsiloxyphenyltrimethicone, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. 3. A composition according to claim 1 or 2, selected from the group. The composition according to any one of claims 1 to 3, wherein the HLB of component (C) is 1.0 to 4.8. The composition according to any one of claims 1 to 4, wherein component (C) is a polyether-modified silicone surfactant. The composition according to any one of claims 1 to 5, wherein component (D) is an alcohol having 1 to 4 carbon atoms. The composition according to any one of claims 1 to 6, wherein the content of component (B) is 0.05 to 10% by mass based on the total mass of the composition. The composition according to any one of claims 1 to 7, wherein the content of component (C) is 0.01 to 3 mass% based on the total mass of the composition. The composition according to any one of claims 1 to 8, further comprising (E) a nonionic surfactant. The cosmetic according to claim 9, wherein the HLB of component (E) is 1.0 to 12.0. The composition according to any one of claims 1 to 10, which has a viscosity of 1,000 mPa·s or less.