JPH01250307A - Oily gelatinous make-up cosmetic - Google Patents

Abstract

PURPOSE:To obtain an oily gelatinous make-up cosmetic having excellent feeling in use and cosmetic effects, by dispersing powder for cosmetic into a silicone base consisting of a specific silicone gel composition, high-viscosity silicone and low-viscosity silicone oil. CONSTITUTION:Preferably 1-40wt.% powder for cosmetic is dispersed into a silicone base consisting of (A) a silicone composition containing a partially crosslinked type organopolysiloxane polymer and a low-viscosity silicone oil in the weight ratio of the former: the latter of 10:90-25:75, (B) a high-viscosity silicone and (C) a low-viscosity silicone oil in the ratio based on the final product concentration of 50.0-90.0wt.% component A, 0.1-5.0wt.% component B and the rest of the component C to give the above-mentioned cosmetic which has excellent adhesivity, covering force, water resistance of cosmetic film, extreme smoothness, spreading, extension, refreshing touch, bonding feeling of cosmetic film to the skin, finish state, durability of cosmetic free from greasiness and oiliness.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an oil-based gel makeup cosmetic, and more particularly to a silicone gel composition and a silicone base material comprising a high viscosity silicone and a low viscosity silicone oil. This invention relates to an oil-based gel make-up cosmetic product containing cosmetic powder dispersed therein and having excellent usability and cosmetic effect.

[Prior Art] Oil-based makeup cosmetics are widely used because they have excellent properties such as adhesion to the skin, covering power, and water resistance of the cosmetic film.

Conventional oil-based makeup cosmetics generally use an oil-based base material consisting of a semi-solid oil, a liquid oil, and a solid oil, or an oil-based base material that is further blended with an oil-based gelling agent to form a gel. It has been manufactured by mixing, dispersing, solidifying, and molding powders. However, because conventional oil-based makeup cosmetics have a high oil content, they have unfavorable feel when used, such as the stickiness and oiliness typical of oil-based products, and difficulty spreading.

Therefore, in order to improve these points, we should: ■ Add water or aqueous ingredients to make it a W2O emulsion type, ■ Lower the amount of oil, and ■ Add less oily oils, such as low-viscosity silicone oil. etc. have been carried out.

[Problems to be Solved by the Invention] However, as mentioned above, in conventional oil-based makeup cosmetics, when a large amount of solid oil, which is normally used in cosmetics, is blended, although a feeling of adhesion can be obtained, it is difficult to apply. There were problems in that it did not spread well and felt heavy, and when a large amount of semi-solid powder was added, although it spread well on the skin, it felt sticky.

Furthermore, W10 type emulsion type makeup cosmetics containing water or aqueous ingredients have the disadvantage that water evaporates over time, although they can provide a light feeling. Although various studies have been made to overcome this drawback, it has been difficult to completely prevent moisture volatilization.

Furthermore, even if the amount of oil is reduced or a less oily agent is added, the oiliness of the oily base material cannot be sufficiently eliminated.

In particular, although low-viscosity silicone oil itself has a light feel with little stickiness, when blended with a normal oil-based base material, it cannot impart a light feel, and when mixed with an oil-based base material, it does not have a light feel. It has been difficult to maintain cosmetics stably due to poor compatibility.

Therefore, while retaining the excellent characteristics of oil-based makeup cosmetics, it does not have the stickiness and oiliness that are their drawbacks, has a light feel, and has high cosmetic effects. development was desired.

[Means for Solving the Problems] As a result of various studies to overcome the above-mentioned problems, the present inventors have found that a low viscosity silicone oil is incorporated into the structure of a partially crosslinked organopolysiloxane polymer having a crosslinked structure. If cosmetic powder is dispersed in a silicone base material consisting of a silicone oil composition containing a high viscosity silicone and a low viscosity silicone oil, it will have a light feel, spread well, and be smooth with less stickiness. The present invention was completed based on the discovery that an excellent oil-based gel makeup cosmetic with a smooth feeling can be obtained.

That is, the present invention provides a silicone gel composition comprising a partially crosslinked organopolysiloxane polymer and a low viscosity silicone oil, and a silicone base material comprising a high viscosity silicone and a low viscosity silicone oil, in which a cosmetic powder is dispersed. This invention relates to an oil-based gel makeup cosmetic.

The configuration of the present invention will be explained below.

First, the partially crosslinked organopolysiloxane polymer constituting the silicone gel composition of the present invention has a crosslinked three-dimensional structure, encapsulates low viscosity silicone oil, and is capable of forming a gel.

Such a partially crosslinked organopolysiloxane polymer is, for example, an organopolysiloxane polymer that is insoluble in benzene, contains benzene in an amount equal to or more than its own weight, and has a vine three-dimensional crosslinked structure, in which the organopolysiloxane is crosslinked. The obtained polymer includes a polymer having a three-dimensional crosslinked structure in part and consisting of R25iO units and R31O,5 units, R35iO05 units and/or Si
It may also contain O2 units.

Examples of R in each of the above-mentioned structural units include a hydrogen atom, an alkyl group such as a methyl group, an ethyl group, and a propyl group, an aryl group such as a phenyl group and a tolyl group, and an aliphatic unsaturated group such as a vinyl group. Or it may be of a different type.

Although organopolysiloxane is insoluble in benzene,
In order to obtain an organopolysiloxane polymer structure having a vine three-dimensional crosslinked structure containing benzene of the same weight or more as its own weight, R31O+, s units and/or Sin2 units, and R
It is necessary that the ratio of 25iO units and/or R3S i Oo,s units be within an appropriate range, and if the ratio of R510,5 units and/or Sin2 units is not sufficiently large, the organopolysiloxane will not have sufficient three-dimensionality. It does not form a cross-linked structure and becomes soluble in benzene, so it cannot be used even if it appears to have a cross-linked structure.

In addition, if there are too many R51O units and/or Sin units compared to R, SiO units and/or R35iOo5 units, the organopolysiloxane will take on a strong crosslinked structure and will be insoluble in benzene, but it will not polymerize. It contains less benzene than its own weight, and when mixed with low-viscosity silicone oil, it separates and is discharged, making it unusable.

The ratio of R25iO units to R31O,,s units in the benzene-insoluble vine organopolysiloxane polymer used here that contains benzene in an amount equal to or more than its own weight is:
Although the molecular weight of the entire organopolysiloxane polymer has a large influence and is difficult to specify strictly, desirable results were obtained with a ratio of 1:1 to 30=1.

When the R31O,,5 units exceed this ratio, it becomes a hard organopolysiloxane polymer, which can contain only the same weight of benzene as its own weight or less. The product does not swell sufficiently, and silicone oil separates and drains.
It becomes impossible to maintain stability. Conversely, if the R25iO unit exceeds the above range, the structural viscosity will become poor. Therefore, in order to obtain a silicone composition that is soft and has good stability, it is preferable that the proportion of the structural units is not limited or is as specified.

The organopolysiloxane polymer described above, which is insoluble in benzene but contains a weight of benzene equal to or more than its own weight and has a vine three-dimensional crosslinked structure, can be synthesized by various methods such as those shown below.

■ A catalytic amount of an alcoholic aqueous solution of an alkali metal hydroxide is added to an organohydrodiene polysiloxane having at least two silicon-bonded hydrogen atoms in one molecule and heated to cause dehydration and condensation reactions. conduct.

■ An organohydrodiene polysiloxane having at least two silicon-bonded hydrogen atoms in one molecule and an organopolysiloxane having at least two silicon-bonded hydroxyl groups in the other molecule in a catalytic amount of alkali metal water. Heating in the presence of oxides, platinum compounds, etc., causes a dehydrogenation condensation reaction.

(2) An organopolysiloxane having at least two hydroxyl groups directly bonded to silicon atoms in one molecule is heated in the presence of a catalytic amount of an alkali metal hydroxide or an organotin compound to carry out a dehydration condensation reaction.

■ An organopolysiloxane having at least two hydroxyl groups directly bonded to silicon atoms in one molecule and an organopolysiloxane having at least two alkoxy groups bonded to silicon atoms in the other molecule are subjected to a catalytic amount of alkali metal hydroxide. A dealcoholization reaction is carried out by heating in the presence of metals or organometallic tin compounds.

Although it is insoluble in benzene by any of these methods,
An organopolysiloxane polymer having a three-dimensional crosslinked structure that can contain benzene in an amount equal to or more than its own weight can be easily obtained.

In addition, other partially crosslinked organopolysiloxane polymers include organopolysiloxane polymers that are insoluble in silicone oil but swell sufficiently; (a) organohydrodiene polysiloxane and (b) aliphatic unsaturated. It is a polymer obtained by addition polymerizing a group-containing organopolysiloxane, and some of it has a three-dimensional crosslinked structure.

The organohydrodiene polysiloxane (a) used here includes HSiO, 5 units, R31O,, 5 units, RHSiO units, R25iO units, R2HS 10
It consists of o, s units, R, 5i005 units, etc., and its molecular structure may be linear, branched, or cyclic, and each molecule contains at least two hydrogen atoms bonded to silicon atoms. It contains. Moreover, it is more preferable that the organohydrodiene polysiloxane be linear in order to control the organopolysiloxane polymer synthesis reaction.

In addition, hydrogen atoms bonded to silicon atoms (-:SiH bond) in this organohydrodiene polysiloxane
Although it is numerically considered to be included in the molecular chain, it may also be at the end of the molecular chain, and the amount of this SiH bond is usually determined when the molecular structure is linear or branched. 1 to 20 mol%, preferably 1 to 50 mol% in the case of cyclic ones, and organic groups other than this ';SiH bond are
Preferably, 0 mol % or more is a methyl group.

The aliphatic unsaturated group-containing organopolysiloxane (0) used at the same time contains at least two aliphatic unsaturated groups bonded to a silicon atom in one molecule. Examples of this organopolysiloxane include vinyl groups and aryl groups, but vinyl group-containing organovinylpolysiloxanes are generally exemplified, and organovinylpolysiloxanes include (CH2=CH) S i Ot s units. , R51
O,, unit, R (CH=CH2) S io unit, R
25iO units, R2(C)l=cH2) S i Oo
, units, R35iO05 units, etc., and its molecular structure may be linear, branched, or cyclic, and each molecule contains an aliphatic unsaturated group bonded to a silicon atom, such as a vinyl group. It contains at least two. The aliphatic unsaturated group-containing organopolysiloxane used here is preferably linear in order to control the organopolysiloxane polymer synthesis reaction. In addition, this organovinyl polysiloxane is usually considered to be a linear type with the molecular chain end blocked with a dimethylvinylsilyl group, but this vinyl group may be included in the chain, and the amount of this vinyl group is 1 to 20 mol% if the molecular structure is linear or branched, 1 to 20 mol% if the molecular structure is cyclic.
It is desirable that the amount is 50 mol %, and it is preferable that 50 mol % or more of the organic groups other than the vinyl group are methyl groups.

In each molecule of the organohydrodienepolysiloxane (A) and the aliphatic unsaturated group-containing organopolysiloxane (0), for example, the organovinylpolysiloxane, a hydrogen atom bonded to a silicon atom, which is a reactive group, or Containing at least two vinyl groups in one molecule is essential for the addition polymer of the two to partially form a three-dimensional structure. In addition, the content of each of these reactive groups in the organopolysiloxane is less than 20 mol% when the molecular structure is linear or branched.
In addition, in the case of a cyclic material, if it exceeds 50 mol%, it becomes a hard polymer and the low viscosity silicone oil described below tends to be difficult to incorporate into the three-dimensional crosslinked structure, causing separation and discharge and making it impossible to stably retain it. It becomes like this. Conversely, if the content is less than 1 mol%, the structural viscosity tends to be poor. Therefore, in order to obtain a silicone composition that is soft and has good stability, the content of reactive groups is 1 to 20 mol% if the molecular structure is linear or branched, although it is not limited. In the case of a cyclic type, the amount is 1 to 50 mol%.

In addition, the organic group R of the organohydrodiene polysiloxane (a) may be an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, an aryl group such as a phenyl group or a tolyl group, a cyclohexyl group, or a cyclohexyl group thereof. Unsubstituted or substituted-valent hydrocarbon groups, excluding aliphatic unsaturated groups such as vinyl groups, selected from groups in which some or all of the hydrogen atoms bonded to the carbon atoms of the group are substituted with halogen atoms, cyano groups, etc. Examples are given below.

A typical example of this is (CH3) 3 S i O-1+ (CH3)2 S
i Oh, +CH3HS i O+-15i(CH3
)3 (However, p=10-500.9=2-50) Methylhydrodiene polysiloxane is a suitable material.

Further, the organic group R of the organovinylpolysiloxane which is the aliphatic unsaturated group-containing organopolysiloxane (0) is the same as R of the organohydrodiene polysiloxane. A typical example of this is (CH2=CH) (C)13)2 S i 0-1(
(CH3)2s io )-1-S i (CH3)
2 (CH=CH2), (however, r=10~10
0) (7) Unit, Aruiha (CH3) 3S i 0-
1((CH3)2S i O)-, 4(CH=CH2
) CH3S i O),.

-S i (CH3)3, (however, m=10~500
, n=2 to 50), which may be a mixture and are suitable materials.

The addition reaction between the organohydrodiene polysiloxane (a) and the aliphatic unsaturated group-containing organopolysiloxane (b) may be carried out by a conventionally known general method. For example, after blending the appropriate organohydrodiene polysiloxane and organovinyl polysiloxane in a molar ratio of the silicon-bonded hydrogen group and the vinyl group, which are each reactive group, in the range of 1/3 to 3/1, By adding an addition polymerization catalyst such as platinum or palladium and stirring while heating, the desired organopolysiloxane polymer insoluble in silicone oil can be easily obtained. In particular, as the addition polymerization catalyst, it is preferable to use chloroplatinic acid described in Japanese Patent Publication No. 33-9969.

The silicone gel composition is easily prepared by sufficiently kneading the partially crosslinked organopolysiloxane polymer described above and the low viscosity silicone oil described below, and forming a gel by swelling the mixture. In this case, the mixing ratio of the partially crosslinked organopolysiloxane polymer and the low viscosity silicone oil is 5:95 to 30:70, preferably 10:90 to 25:75 by weight.

If the amount of the partially crosslinked organopolysiloxane polymer decreases, the low-viscosity silicone oil will become excessive and will become fluid and viscous, making it impossible to maintain a good gel structure.On the other hand, if the amount increases, it will be difficult to obtain a soft gel composition. be.

The high-viscosity silicone is one having a degree of polymerization such that the viscosity exceeds 1 million cs, such as dimethylpolysiloxane having a degree of polymerization of 3000 or more.

When blending high-viscosity silicone, it is preferable to mix it with low-viscosity silicone oil, dissolve it, and make it uniform before use. In this case, the mixing ratio (weight) of high viscosity silicone and low viscosity silicone oil is 1/
It may be set arbitrarily to 1 or less. If the amount of high viscosity silicone exceeds this ratio, it will be difficult to prepare the final product.
This is because it becomes difficult to easily blend as a moderately viscous material.

Further, the low viscosity silicone oil is not particularly limited, but any one having a viscosity of about 50 cs or less can be suitably used. However, if the purpose is to dissolve the high viscosity silicone mentioned above and the amount used is relatively small (for example, within 5.0% by weight per final product concentration), there is no problem even if it is less than about 100 cs. . This is because as the viscosity increases, if a large amount is used, it becomes oily to the touch, which is unfavorable in terms of feel. Low-viscosity silicone oils include low polymerization degree linear dimethylpolysiloxane, methylphenylpolysiloxane, cyclic octamethylcyclotetrasiloxane,
Examples include decamethylcyclopentasiloxane, and one or more of these may be appropriately selected and used as required.

Next, cosmetic powders include, but are not limited to, extender pigments, inorganic white pigments, inorganic colored pigments, organic pigments, organic powders,
Pearl agents etc. can be used, specifically talc, kaolin, mica, magnesium carbonate, calcium carbonate,
Magnesium silicate, magnesium aluminum silicate, silica, titanium oxide, zinc oxide, red iron oxide, yellow iron oxide, black iron oxide, black iron oxide, black iron oxide, tar pigment, titanium mica, titanium iron mica oxide, bismuth oxychloride, nylon powder, polyethylene Examples include methyl methacrylate powder, styrene powder, polytetrafluoroethylene powder, silk powder, crystalline cellulose, and starch. One or more of these cosmetic powders may be selected and used depending on the purpose of cosmetic use, and may also be blended by subjecting them to a known surface coating treatment.

The oil-based gel makeup cosmetic of the present invention is made by dispersing cosmetic powder in a silicone base material consisting of a silicone gel composition, high viscosity silicone, and low viscosity silicone oil, and the blending amounts of each are as follows: A silicone base containing 50.0 to 90.0% by weight of silicone gel composition, 0.1 to 5.0% by weight of high viscosity silicone, and the balance being low viscosity silicone oil, based on the final product concentration; It is preferable that the amount of cosmetic powder is 1 to 40% by weight based on the material, and within this range, the effects of the present invention can be fully achieved.

In addition to the above-mentioned essential ingredients, the oil-based gel makeup cosmetic of the present invention may contain fragrances, preservatives, ultraviolet absorbers, surfactants, antioxidants, polymer compounds, Oil agents, alcohol, ingredients for beautiful skin, etc. can be added.

To produce the oil-based gel makeup cosmetic of the present invention, a silicone gel composition prepared in advance, a high viscosity silicone mixed and dissolved with a low viscosity silicone oil, a remaining amount of low viscosity silicone oil as needed, and a cosmetic This is carried out by uniformly mixing powders according to a conventional method. Although the order of addition is not particularly limited, it is preferable that the cosmetic powder be uniformly dispersed in the silicone base material made of the silicone gel composition, high viscosity silicone, and low viscosity silicone oil by mixing.

The oil-based gel make-up cosmetics of the present invention can be provided as foundations, cheek rouges, eye shadows, lipsticks, and the like.

[Example] The present invention will be described below with reference to Examples. Note that these do not limit the present invention in any way.

Examples [11 to [2] Comparative Examples [1] to [3] Oil-based gel foundations having the compositions shown in Table 1 were manufactured. However, the numbers in the table indicate parts by weight.

Table 1 (Note 1) Trimethylsilyl end-capped dimethylmethylhydrodiene polysiloxane (molecule i 2300, CH3H3i
An appropriate amount of 1% potassium hydroxide solution (ethanol: water: 2:1) was added to O:(CH3)2SiO=1:4>, and a polymerization reaction was carried out by heating and refluxing to obtain a reaction product. Next, this reaction product is washed with water to remove the alkaline agent, and then
A partially crosslinked organopolysiloxane polymer was produced by air drying.

23 parts by weight of this partially crosslinked organopolysiloxane polymer and 77 parts by weight of dimethylpolysiloxane (viscosity: 6 cs) were dispersed and mixed, thoroughly kneaded, and swollen to prepare a silicone gel composition.

(Note 2) Methylhydrodiene polysiloxane, 11% baking treatment (manufacturing method) Ingredients (odor) After mixing and dissolving 4, add component (1) to this.
, (6) to 03) were added and mixed, and then sufficiently kneaded using a Miki roll to make it homogeneous, and then filled into a container to obtain a product.

Using the products of Examples [1] to [21] and Comparative Examples [1] to [3] obtained as described above, the sensory evaluation of the usability and cosmetic effect, and the stability over time were evaluated and studied. The results are shown in Table 2.

(Margin below) Table 2 0: Good △: Slightly poor ×: Bad From the results in Table 2, the oil-based gel foundation of the present invention does not feel sticky or greasy when applied to the skin.
It has a light yet rich feel, is smooth and spreads well, making it easy to use, feels close to the skin, has a good finished film, and has good makeup retention. It had excellent cosmetic effects and good stability over time. On the other hand, the product of Comparative Example [1] is not sticky and spreads well on the skin, but it has poor adhesion to the skin and makeup retention, and moreover, powder separation and sedimentation occur over time. The stability over time was also poor. In addition, the products of Comparative Examples [2] and [3] do not have much richness when applied, are less spreadable on the skin, have less adhesion to the skin, and have poor makeup retention, so they are fully satisfactory. It was nothing.

Example [3] Oily gel-like red bean paste (ingredients) (parts by weight) + 1)
Silicone gel composition (Note 3) 60.0 (2
) High viscosity silicone 1.0 (degree of polymerization 7000-9500) (3) Octamethylcyclotetracylo 13.9
Xan (4) fragrance 0.1 (5
) Mica 15.0 (6) Red No. 226 0.5 (7) Yellow 4
No. aluminum lake 0.3 (8) Red iron oxide 1.5 (9) Yellow iron oxide 0.200) Talc
7.5 (Note 3) Example [In Note 1 of 1F, the same procedure was followed except that 26 parts by weight of partially crosslinked organopolysiloxane polymer and dimethylpolysiloxane (viscosity 6cs) were mixed. Obtained.

(Production method) Mix and dissolve components (2) to (3), and add component (1) to this.
, (4) to 00) were added and mixed, thoroughly kneaded with three rolls to make it homogeneous, and then filled into a container to obtain a product.

Example [41 Oily gel eyeshadow (ingredients) (parts by weight) +11
Silicone gel composition (actual 1ffi50.0 example [3
) (2) High viscosity silicone 4.0 (degree of polymerization 3000-7000) (3) Dimethylpolysiloxane (viscosity 5.9 degrees 6 cs) (4) Decamethylcyclopentacylo 5.0 xane (5) Fragrance 0.1
(Phrase Red No. 226 0.4 (η
Blue No. 404 0.4 (8) Konjiyou 3.019) Mica titanium
20.000) Mica
11.2 (Production method) A product was obtained in the same manner as in Example [3].

The products of Examples [3] and [4] obtained as above were as follows:
When applied, it does not feel sticky, has a light texture, and has a rich texture that spreads smoothly onto the skin. It had good texture, excellent usability and cosmetic effects, and was extremely useful as a makeup cosmetic.

[Effects of the Invention] The oil-based gel makeup cosmetic of the present invention is characterized in that cosmetic powder is dispersed in a silicone gel composition and a silicone base material consisting of high viscosity silicone and low viscosity silicone oil. do. The low-viscosity silicone oil blended into this silicone gel composition is incorporated into the three-dimensional crosslinked structure of the silicone gel, and the gel structure of the silicone gel is quickly destroyed by a slight external force. Therefore, when the cosmetic of the present invention is used, the encapsulated low-viscosity silicone oil quickly oozes out by rubbing with the applicator or spreading on a desk. In addition, since the silicone base material contains high-viscosity silicone and low-viscosity silicone oil, the cosmetic of the present invention spreads very well when used, and also has an improved feeling of adhesion to the skin, with no stickiness. I can't feel it.

Therefore, the cosmetic of the present invention is a silicone-based oil-based gel type makeup cosmetic, which has properties such as excellent adhesion, covering power, and water resistance of the cosmetic film, and is free from stickiness. It is non-greasy, has a very smooth, spreadable, and light feel, and is comfortable to use. Moreover, the cosmetic of the present invention has excellent cosmetic effects, such as a feeling of close contact of the cosmetic film to the skin, a good condition of the finished cosmetic film, and good makeup retention.

that's all Applicant: Kobayashi Kose Co., Ltd.

Claims (1)

[Claims] (1) Cosmetic powder is dispersed in a silicone gel composition consisting of a partially crosslinked organopolysiloxane polymer and low viscosity silicone oil, and a silicone base material consisting of high viscosity silicone and low viscosity silicone oil. An oil-based gel makeup cosmetic featuring the following.