CN116887799A - Oil-in-oil type cosmetic - Google Patents

Abstract

An object of the present invention is to provide an oil-in-oil cosmetic that has further improved transfer resistance, has excellent transfer resistance even to substrates with non-smooth surfaces such as paper and cloth, and has excellent gloss and stability after application. Also excellent. The present invention relates to oil-in-oil liquid cosmetics, which are characterized in that they contain: (a) non-volatile hydrocarbon oil; (b) non-volatile silicone oil; and (c) compatible with the aforementioned (b) non-volatile silicone oil The wax does not contain volatile cyclic silicone oil, and the oil-in-oil liquid cosmetics consists of the aforementioned (b) non-volatile silicone oil constituting the external phase (continuous phase), and the aforementioned (a) non-volatile hydrocarbon oil constituting the internal phase (dispersed phase) ) of the oil-in-oil emulsion, the ratio (mass ratio) of the blending amount of (a) non-volatile hydrocarbon oil to the total blending amount of (b) non-volatile silicone oil and (a) non-volatile hydrocarbon oil ) is (a)/[(a)+(b)]=0.1～0.3.

Description

Oil-in-oil cosmetics

Technical field

The present invention relates to oil-in-oil cosmetics excellent in transfer resistance. More specifically, it relates to liquid (non-solid) oil-in-oil emulsified cosmetics that do not cause color migration even on base materials with non-smooth surfaces such as paper and nonwoven fabrics, and do not lose luster or makeup.

Background technique

In cosmetics such as lipstick, secondary adhesion of transfer due to contact between the applied cosmetics and cups is a problem. Conventionally, color cosmetics having so-called transfer resistance (no secondary adhesion effect) that hardly causes secondary adhesion have been studied.

For example, Patent Document 1 describes a method that contains (a) a non-volatile hydrocarbon-based oil component of 5 to 80% by mass and (b) a non-volatile silicone-based oil component (methylphenyl polysiloxane) that are hardly compatible with each other. Alkane) 1 to 70 mass%, further blending 0.1 to 10 mass% of dextrin fatty acid ester, and adjusting the blending ratio of (a) and (b) [a/(a+b)] to 0.4 to 0.8 to obtain Stable oil-in-oil cosmetics with excellent transfer resistance.

The oil-in-oil cosmetics described in Patent Document 1 form an emulsified form in which (a) the non-volatile hydrocarbon-based oil is divided into a continuous phase (external phase), and (b) the non-volatile silicone-based oil is divided into a dispersed phase (internal phase) (paragraph 0009). By coating, the silicone oil in the internal phase bleeds out to the surface layer and covers the adhesion layer containing the non-volatile hydrocarbon oil component of the colorant, thereby exhibiting transfer resistance.

However, the cosmetics in Patent Document 1 can effectively suppress color transfer to base materials with smooth surfaces such as ceramics and glass. However, color transfer may occur to base materials with uneven surfaces such as paper cups and nonwoven masks. color transfer. Due to the recent spread of novel coronavirus infection (COVID-19), wearing a mask when going out and meeting people is becoming a new daily routine (new normal or new standard). Therefore, there is a need for lipstick and other cosmetics that do not cause color transfer even when wearing a mask.

existing technical documents

patent documents

Patent Document 1: Japanese Patent No. 4766720

Contents of the invention

Invent the problem to be solved

Therefore, the object of the present invention is to provide an oil-in-oil cosmetic that has further improved transfer resistance, has excellent transfer resistance even to substrates with non-smooth surfaces such as paper and cloth, and has high gloss and stability after application. Performance is also excellent.

solutions to problems

After in-depth research, the present inventors found that by using non-volatile hydrocarbon oil as the internal phase (dispersed phase) and non-volatile silicone oil as the external phase (continuous phase), and using wax to thicken the external phase, an improved product can be obtained. The present invention has been completed to provide an oil-in-oil cosmetic that is transfer-resistant, stable, and glossy on a non-smooth substrate.

That is, the present invention provides an oil-in-oil liquid cosmetic, characterized in that it contains:

(a) Non-volatile hydrocarbon oil;

(b) Non-volatile silicone oil; and

(c) A wax that is compatible with the aforementioned (b) non-volatile silicone oil,

Does not contain volatile cyclic silicone oil,

The oil-in-oil liquid cosmetic is formed from an oil-in-oil emulsion in which the aforementioned (b) non-volatile silicone oil constitutes the external phase (continuous phase) and the aforementioned (a) non-volatile hydrocarbon oil constitutes the internal phase (dispersed phase),

The ratio (mass ratio) of the blending amount of (a) non-volatile hydrocarbon oil to the total blending amount of (b) non-volatile silicone oil and (a) non-volatile hydrocarbon oil is (a)/[(a) +(b)]=0.1～0.3.

Effect of the invention

The oil-in-oil liquid cosmetic of the present invention has excellent transfer resistance after application and does not cause color transfer to non-smooth substrates such as paper and cloth. In addition, the oil-in-oil liquid cosmetic of the present invention has gloss, good spreading when applied, and excellent stability.

Detailed ways

The oil-in-oil liquid cosmetic (hereinafter, also simply referred to as "cosmetics") of the present invention contains (a) non-volatile hydrocarbon oil, (b) non-volatile silicone oil, and (c) wax as essential components.

(a) Non-volatile hydrocarbon oil,

The (a) non-volatile hydrocarbon oil used in the present invention is preferably selected from those that separate at 25° C. when mixed with (b) the non-volatile silicone oil described below and have a viscosity higher than that of the (b) non-volatile silicone oil. Hydrocarbon oil. In addition, it is more preferable to select a hydrocarbon oil that is uniformly dispersed at 90° C. when the (a) non-volatile hydrocarbon oil is mixed with the (b) non-volatile silicone oil.

Specific examples of the (a) non-volatile hydrocarbon oil in the present invention include hydrogenated polyisobutylene, polybutylene, polyisoprene, liquid paraffin, squalane, hydrogenated polydecene, petrolatum, and the like. (a) The non-volatile hydrocarbon oil may be one type or a mixture of two or more types. Among the aforementioned examples, hydrogenated polyisobutylene (average molecular weight = 1000 to 3000) is particularly preferably used.

(a) The blending amount of the non-volatile hydrocarbon oil is 5 to 35 mass%, preferably 10 to 30 mass%. (a) If the blending amount of the non-volatile hydrocarbon oil is too small, the amount of colorant that can be blended is limited. (a) If the blending amount of the non-volatile hydrocarbon oil is too much, the stickiness will increase and the transfer resistance will tend to decrease.

(b) Non-volatile silicone oil

As the (b) non-volatile silicone oil, as mentioned above, it is preferably selected from silicone oils that separate at 25° C. when mixed with the (a) non-volatile hydrocarbon oil and have a lower viscosity than the (a) non-volatile hydrocarbon oil. Here, the presence or absence of "separation" is measured under the following conditions.

(Measurement conditions)

Use (a) and (b) with (a): (b) = 1:1 (mass ratio), heat to 90°C, stir and mix, and then let stand. When the mixture reaches 25°C, separate the boundaries evenly into The state of the two layers is regarded as "separation occurs", and the translucent state or the borderless transparent compatible state is regarded as "separation does not occur".

Specific examples of the (b) non-volatile silicone oil in the present invention include methylphenylpolysiloxane, polydimethylsiloxane, fluorine-modified alkyl silicone, and the like. Among these, methylphenylpolysiloxane is preferred, and methylphenylpolysiloxane having a viscosity of 300 to 500 cs is particularly preferred.

(b) The blending amount of non-volatile silicone oil is 60 to 90 mass%, preferably 70 to 80 mass%. When the blending amount of the non-volatile silicone oil is too small, the transfer resistance tends to decrease, and when the blending amount is too large, the gloss may increase but the color development may decrease.

(c)wax

The (c) wax blended in the cosmetics of the present invention only needs to be a wax compatible with the (b) non-volatile silicone oil.

Specific examples of waxes preferably used in the present invention include beeswax, candelilla wax, sucrose tetrastearate triacetate (Sugar wax), carnauba wax, and C30-45 alkyl polymethyl silicone. At least one of the group consisting of oxane/C30-45 olefin (Silicone wax), microcrystalline wax, microcrystalline wax/paraffin wax (Paramix), microcrystalline wax/polyethylene (PA wax) and rice bran wax (Rice wax) .

Among the above specific examples, from the viewpoint of the stability of the oil-in-oil emulsion, it is preferable to use one selected from the group consisting of beeswax, candelilla wax, sucrose tetrastearate triacetate (Sugar wax), and carnauba wax. and at least one wax from C30-45 alkyl polymethylsiloxane/C30-45 olefin (Silicone wax).

The blending amount of (c) wax in the cosmetics of the present invention is an amount that allows the cosmetics to become "liquid". Specifically, it is usually 1 to 6 mass%, preferably 1.5 to 5 mass%, more preferably 2 to 4 mass%, and may be 3 mass% or less. When the blending amount of the wax is too small, a stable oil-in-oil emulsified cosmetic may not be obtained, and when the blending amount is too large, the hardness becomes high and the spread during application becomes poor.

The cosmetics of the present invention do not contain volatile cyclic silicone oil. If volatile cyclic silicone oil is blended, the ingredients tend to separate, making it difficult to prepare stable cosmetics. Volatile cyclic silicone oil refers to a cyclic silicone oil that exhibits volatility under normal temperature and pressure. Specific examples include decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, and dodecamethylcyclotetrasiloxane. Cyclohexasiloxane and other cyclic silicone oils.

On the other hand, "non-volatile" in this specification means that it shows no volatility at normal temperature and pressure. For convenience, oil with an evaporation rate lower than 0.01 mg/cm ² /min under normal temperature and pressure can be defined as non-volatile oil, and there is no particular limitation.

In the cosmetics of the present invention, the mixing ratio (mass ratio) of (a) non-volatile hydrocarbon oil and (b) non-volatile silicone oil is (a)/[(a)+(b)]=0.1 to 0.3, forming An oil-in-oil emulsion in which (b) non-volatile silicone oil constitutes the external phase (continuous phase) and (a) non-volatile hydrocarbon oil constitutes the internal phase (dispersed phase). By further blending an appropriate amount of (c) wax, the external phase (continuous phase) is thickened, thereby forming a stable liquid oil-in-oil cosmetic (liquid cosmetic) excellent in transfer resistance.

"Liquid cosmetics" in the present invention refers to soft paste-like or viscous liquid cosmetics, which can be filled in flat (shallow) containers such as bottles, tubes or jars, and are different from "solid" or "stick-shaped" cosmetics are significantly different. That is, the "liquid state" in the present invention can be said to be "non-solid (or non-rod-like)". Specifically, cosmetics whose hardness (25°C) measured with a durometer (using an 11.3φ needle) is 300 gf or less, preferably 200 gf or less, or whose viscosity (30°C) measured with a B-type viscometer can be in the range of 1 to 1000 Pa Cosmetics within ·s are defined as "liquid cosmetics" in the present invention.

In the cosmetics of the present invention, it is preferable to further blend (d) dextrin fatty acid ester in some cases.

In particular, when using microcrystalline wax, microcrystalline wax/paraffin wax (Paramix), microcrystalline wax/polyethylene (PA wax), or rice bran wax (Rice wax) as (C) wax, from the viewpoint of stability, (d) dextrin fatty acid ester is allowed to coexist.

(d) The dextrin fatty acid ester is an ester of dextrin and a higher fatty acid having 12 to 22 carbon atoms. The dextrin fatty acid ester (d) of the present invention may be a fatty acid having 6 to 10 carbon atoms in which part of the higher fatty acid of the above-mentioned higher fatty acid ester is substituted. Examples of the dextrin fatty acid ester include dextrin palmitate, dextrin myristic acid, and dextrin palmitate/ethylhexanoate. Commercially available products are available under the trade names: Rheopearl KL, Rheopearl KL2, Rheopeearl TT, Rheopeearl TT2, Rheopeearl MKL2 (all manufactured by Chiba Milling Co., Ltd.), etc.

(d) The blending amount of dextrin fatty acid ester is preferably 0.1 to 10 mass%, and more preferably 0.5 to 8 mass%. (d) The blending of ingredients helps to stabilize the system, but if the blending amount is too large, it will cause stickiness.

Moreover, when (d) dextrin fatty acid ester is mix|blended with the cosmetics of this invention, it is preferable to also mix the oil component ("(e) component") which dissolves this (d) component.

The component (e) may be an oil capable of dissolving the dextrin fatty acid ester. For example, polar oils such as ester oils are preferably used, and polyglycerol-2 isostearate, phytosteryl isostearyl dimeryl linoleate, and phytosterol/octyldodecyl lauroyl glutamic acid are particularly preferably used. ester, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, etc.

The cosmetics of the present invention preferably further contain (f) anhydrous silicic acid. By blending (f) anhydrous silicic acid, the stability is further improved. As (f) anhydrous silicic acid, ultrafine-particle anhydrous silicic acid having an average primary particle size of 1 to 50 nm is preferred, and examples thereof include AEROSIL 200, 300, R972, R974, RY200, etc. (manufactured by Japan AEROSIL Corporation). The anhydrous silicic acid used in the present invention may be hydrophilic or may be hydrophobicized such as silanization.

(f) The blending amount of anhydrous silicic acid is 0.5 to 5 mass%, preferably 1 to 4 mass%.

The cosmetics of the present invention preferably further contain (g) colorant. (g) The colorant only needs to be a colorant commonly used in lipsticks and other color cosmetics, and may be in powder form or lake form (kneaded with oil). Colorants, whether they are inorganic pigments, organic pigments or pearlescent agents, are easier to wet with (a) non-volatile hydrocarbon oil than (b) non-volatile silicone oil, and are eventually transferred to the spontaneous dispersion layer, that is, (a) non-volatile Hydrocarbon oil (internal phase).

The blending amount of the colorant (g) is 0.01 to 30 mass%, preferably 0.1 to 20 mass%.

In addition to the above, the cosmetics of the present invention can be suitably blended with oils, powders, dyes, polymer compounds, and moisturizers used in general oily cosmetics, especially color cosmetics such as lipstick, within the scope that does not impair the effects of the present invention. , fragrances, surfactants, antioxidants, preservatives, beauty ingredients, etc. Examples of the moisturizer include polyol-based moisturizers such as glycerin, propylene glycol, and 1,3-butanediol.

In addition, the cosmetics of this invention include the case which does not contain glyceryl behenate/eicosanedioic acid ester. When containing glyceryl behenate/eicosanedioic acid ester, the compounding amount is preferably less than 0.1% by mass.

The cosmetics of the present invention can be applied to liquid lipstick, lip gloss, lip base for base makeup, lipstick coating, lipstick, etc. In particular, when used in lipstick containing pigments, it is suitable because it can combine the color development effect of lipstick with transfer resistance and gloss such as lip gloss.

Example

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to these examples. Unless otherwise stated, the blending amount indicates mass%.

Oil-in-oil cosmetics were prepared according to conventional methods using the formulas shown in Tables 1 to 3 below, and "spreading during application", "transfer resistance" and "appearance stability" of the cosmetics of each example were evaluated.

(1) Usability evaluation test

Conduct practical usability trials with 10 professional panel members. The workability item is spread and transfer resistance during coating. Regarding each evaluation item, sensory evaluation (score) is performed in five stages based on the following evaluation points. The average score is judged based on the following evaluation criteria.

The application method is as follows: After applying the cosmetics of each Example and Comparative Example to the lips, rub the lips up and down for about 5 seconds and apply pressure. The evaluation of transfer resistance is as follows: When the lips coated with cosmetics are lightly pressed against the non-woven mask, the presence or absence of transfer to the mask is evaluated. The spread during application is as follows: Sensory testing and visual inspection by members of each professional panel to judge.

(Fraction)

5 points: very good

4 points: excellent

3 points: average

2 points: Poor

1 point: Very poor

(evaluation criteria)

A: Evaluation value (average) 4.0 or more

B: Evaluation value (average) is 3.0 or more and less than 4.0 points

C: Evaluation value (average) is 2.0 or more and less than 3.0 points

D: The evaluation value (average) is less than 2.0 points

(2) Evaluation test for appearance stability

The appearance stability (presence or absence of separation) in the used container was evaluated by the following method.

(evaluation method)

The composition formula described in the table was prepared according to a conventional method, placed in a container with a coating tool, and the appearance was evaluated by visual observation.

(evaluation criteria)

A: Completely unseparated and uniform

B: Partial separation was confirmed, but it is at a level where there is no problem in use.

C: Separation is confirmed and color unevenness occurs.

D: completely separated

(3) Measurement of viscosity or hardness

The viscosity of the cosmetics in each example was measured at 30° C. using a B-type viscometer (TVB10 type viscometer: manufactured by Toki Sangyo Co., Ltd.). The hardness was measured at 25° C. using a FUDOH rheometer (manufactured by RHEOTECH Co., Ltd.) using an 11.3φ needle.

[Table 1]

[Table 2]

[table 3]

From the results shown in Tables 1 to 3, it can be seen that for a sample containing (a) non-volatile hydrocarbon oil, (b) non-volatile silicone oil and (c) wax, (a) non-volatile hydrocarbon oil relative to (b) non-volatile The blending amount ratio (mass ratio) of the total blending amount of silicone oil and (a) non-volatile hydrocarbon oil, that is, (a)/[(a)+(b)] is set in the range of 0.1 to 0.3, forming (b) non-volatile hydrocarbon oil For the liquid cosmetics of Examples 1 to 16 in which volatile silicone oil serves as the external phase (continuous phase) and (a) non-volatile hydrocarbon oil serves as the internal phase (dispersed phase), "spreading during application" ”, “transfer resistance” and “appearance stability” were all evaluated as excellent. On the other hand, in Comparative Example 1 which does not contain (c) wax, and Comparative Examples 2 and 3 in which volatile cyclic silicone oil was blended, stable compositions could not be prepared.

The oil-in-oil cosmetics (lipstick) of the present invention were prepared according to the formulas shown in Tables 4 and 5 below.

[Table 4]

Recipe example 1 Mixing amount Methylphenylpolysiloxane(b) 69.9 beeswax 3 Silica 2 Dimethylsilylated silica 0.4 Hydrogenated polyisobutylene(a) 24.5 Colorants 0.1 Nicotinamide 0.1 total 100 (a)/[(a)+(b)] 0.26

[table 5]

Recipe example 2 Mixing amount Methylphenylpolysiloxane(b) 65 beeswax 3 Silica 2 Dimethylsilylated silica 0.4 Hydrogenated polyisobutylene(a) 24.5 Colorants 0.1 Nicotinamide 5 total 100 (a)/[(a)+(b)] 0.27

Claims (10)

1. An oil-in-oil liquid cosmetic, characterized in that it contains: (a) Non-volatile hydrocarbon oil; (b) Non-volatile silicone oil; and (c) A wax compatible with said (b) non-volatile silicone oil, Does not contain volatile cyclic silicone oil, The oil-in-oil liquid cosmetic is formed from an oil-in-oil emulsion in which the (b) non-volatile silicone oil constitutes the external phase (continuous phase) and the (a) non-volatile hydrocarbon oil constitutes the internal phase (dispersed phase). , The ratio (mass ratio) of the blending amount of (a) non-volatile hydrocarbon oil to the total blending amount of (b) non-volatile silicone oil and (a) non-volatile hydrocarbon oil is (a)/[( a)+(b)]=0.1～0.3. 2. The cosmetic according to claim 1, wherein the (a) non-volatile hydrocarbon oil is selected from the group consisting of the non-volatile silicone oil that when mixed with the (b) non-volatile silicone oil separates at 25° C. and has a property higher than that of the (b) ) hydrocarbon oil with the viscosity of non-volatile silicone oil. 3. The cosmetic product according to claim 1 or 2, wherein the (b) non-volatile silicone oil contains methylphenylpolysiloxane. 4. The cosmetic according to any one of claims 1 to 3, wherein the wax (c) is selected from the group consisting of beeswax, candelilla wax, and sucrose tetrastearate triacetate (Sugar wax). , carnauba wax, C30-45 alkyl polymethylsiloxane/C30-45 olefin (Silicone wax), microcrystalline wax, microcrystalline wax/paraffin wax (Paramix), microcrystalline wax/polyethylene (PA wax) and At least one species from the group consisting of rice wax. 5. The cosmetic product according to any one of claims 1 to 4, further containing (d) dextrin fatty acid ester. 6. The cosmetic product according to claim 5, further comprising (e) an oil component that dissolves the (d) dextrin fatty acid ester. 7. The cosmetic product according to any one of claims 1 to 6, further containing (f) anhydrous silicic acid. 8. The cosmetics according to any one of claims 1 to 7, further containing (g) a coloring material. 9. The cosmetic product according to any one of claims 1 to 8, which does not contain glyceryl behenate/eicosanedioate. 10. The cosmetic product according to any one of claims 1 to 9, which is an oil-in-oil liquid lipstick.