JPH03115207A - Oily composition and cosmetic containing same - Google Patents

Abstract

PURPOSE:To obtain an oily composition having a refreshing feeling in use and excellent stability with time by blending an oily base with silicone gel composition composed of organopolysiloxane polymer having crosslinking structure and low-viscosity silicone oil and aqueous base. CONSTITUTION:An oily base containing a semisolid oil or a liquid oil and a solid oil and/or an oily gelatinizing agent is blended with a silicone gel composition composed of an organopolysiloxane polymer of partial crosslinking type and a low-viscosity silicone oil and water alone or an aqueous base selected from a combination of water, water-soluble polymer, water-swelling clay minerals or polyhydric alcohol to give an oily composition having a refreshing feeling in use and excellent stability with time. Further a cosmetic containing the oily composition has the similar excellent characteristics. The cosmetic produces a cosmetic film free from oil luster, has a natural, good finish and cosmetic effects such as excellent make-up durability.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides an oil-based composition that is made by mixing an oil-based base, a silicone gel composition, and an aqueous base, and has excellent usability, cosmetic effect, and stability over time. and cosmetics containing the same.

[Prior Art and Problems to be Solved by the Invention] Oil-based 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 cosmetics generally use an oil-based base consisting of semi-solid oil, liquid oil, and solid oil, or an oil-based base that is further blended with an oil-based gelling agent to form a gel. It is manufactured by mixing, dispersing, solidifying, and molding.

However, since conventional oil-based cosmetics have a high oil content, they have the disadvantages of feeling sticky or greasy, which is characteristic of oil-based products, and that they do not spread well.

In order to solve these drawbacks, we need to: ■ mix water or aqueous ingredients to create a dispersion type or W2O type emulsion type;
Efforts have been made to lower the amount of oil, and to incorporate less oily oils, such as low-viscosity silicone oil.

However, with dispersion type or W10 emulsion type oil-based cosmetics that contain aqueous base materials such as water or aqueous ingredients, although they can give a light feeling, the water evaporates over time, At the same time, even if known dextrin fatty acid esters, metal soaps, etc., which are known as oil-based gelling agents, are used in combination, there are problems in terms of stability over time.

Furthermore, even if the amount of oil is lowered or a less oily agent is added, the oiliness of the oily base 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 base, it cannot impart a light feel, and when mixed with an oil base, it does not have a light feel. It has been difficult to maintain cosmetics stably due to poor compatibility.

Therefore, a cosmetic that maintains the excellent properties of oil-based cosmetics, does not have the stickiness and oiliness that are their drawbacks, has a light feeling of use, and can stably retain an aqueous base material. was desired.

[A means to solve problems]

Under these circumstances, the inventors of the present invention have conducted extensive research, and as a result, have created a silicone gel composition consisting of an oil base, an organopolysiloxane polymer having a crosslinked structure, and a low viscosity silicone oil, and an aqueous base material. For example, it is possible to obtain an oil-based composition that is less sticky or oily, has a light feeling on use, and has excellent stability over time, and cosmetics containing this oil-based composition also have the same excellent properties. The present invention was completed based on the discovery that the present invention has certain characteristics.

That is, the present invention comprises the following components (8) to (C) (A) an oily base containing a semi-solid oil or liquid oil, and a solid oil and/or an oily gelling agent; (B) a partially crosslinked organopolysiloxane; Silicone gel composition consisting of a polymer and low viscosity silicone oil (C) One or two selected from water alone, or a combination of water and a water-soluble polymer, a water-swellable clay mineral, or a polyhydric alcohol. The present invention provides an oily composition comprising at least one aqueous base material, and a cosmetic containing the same.

The oil base used as component (A) in the present invention is a semi-solid oil or liquid oil mixed with a solid oil and/or an oil gelling agent.

The semi-solid oil or liquid oil is not particularly limited as long as it is normally used in cosmetics, and mineral oils, vegetable oils, animal oils, higher fatty acids, higher fatty acid esters, higher alcohols, etc. can be used. Specifically, for example, liquid paraffin,
Squalane, castor oil, isopropyl myristate, isopropyl palmitate, lanolin, petrolatum, olive oil, jojoba oil, macadamian nut oil, mink oil, turdle oil, almond oil, safflower oil, avocado oil,
Glycerin fatty acid esters such as octyldodecyl myristate, cetyl 2-ethylhexanoate, and 2-ethylhexanoate triglyceride, diglycerin fatty acid esters such as diglyceryl isostearate, and propylene glycol fl such as propylene glycol capriate.
Examples include it fatty acid ester, dipentaerythritol fatty acid ester, oleic acid, oleyl alcohol, and the like.

The solid oil is not particularly limited as long as it is a solid oil with a melting point of 40° C. or higher that is commonly used in cosmetics, and hydrocarbons, waxes, hydrogenated oils, higher fatty acids, higher alcohols, etc. can be used. Specifically, for example, solid paraffin wax, ceresin wax, microcrystalline wax, carnauba wax, candelilla wax, beeswax, Japanese wax wax, gay wax, polyethylene wax, hydrogenated castor oil, rosin acid pentaerythritol ester, stearic acid, lauric acid. , myristic acid, behenic acid, cetyl alcohol, stearyl alcohol, lauryl alcohol, and the like.

The oil-based gelling agent is blended to gel the oil component to adjust the hardness of the cosmetic agent and to ensure that the cosmetic composition spreads appropriately on the skin. As this oily gelling agent, those known in the cosmetics field can be used, such as clay minerals such as organically modified montmorillonite clay; starch fatty acid esters (for example, fatty acid esters of starch decomposition products with an average degree of polymerization of 10 to 50); lipophilic Sucrose fatty acid esters (for example, those in which the number of carbon atoms in the fatty acid is 12 or more, and the ester composition is less than 0% by weight of monoester); amides of N-acylamino acids such as lauroylglutamic acid dibutylamide and dilauroyllysine stearylamine salt; , esters, amine salts, and other derivatives; metal soaps such as aluminum I2-hydroxystearate, calcium stearate, and calcium palmitate.

The oily base used in the present invention can be prepared by mixing these solid oils and oily gelling agents alone or in combination with the semisolid oil or liquid oil. The blending ratio of solid oil and/or oily gelling agent is not particularly limited, but is 5 to 40% by weight in the oily base.
is preferred.

In addition, the silicone gel composition that is the ([]) component is
It is composed of (a) a partially crosslinked organopolysiloxane polymer and (ra) a low-viscosity silicone oil, and the silicone oil (Co) is encapsulated in the polymer (a).

The partially crosslinked organopolysiloxane polymer of (a) above is, for example, obtained by crosslinking organopolysiloxanes and has a three-dimensional crosslinked structure in part that is insoluble in benzene and can contain more than its own weight of benzene. Examples include organopolysiloxane polymers.

The polymer has R25iO units and R31O,,S units, and has R35I00. It may contain s units and/or 5lO2 units. In order for this substance to have a three-dimensional crosslinked structure that is insoluble in benzene but can contain more than its own weight of benzene, R31O,
, , units and/or S10. It is necessary that the ratio of the unit to the R25IO unit and/or R35lO0, unit is within an appropriate range. If the R3101,s units and/or 5lO7 units are too small, the organopolysiloxane polymer will not have a sufficient three-dimensional crosslinked structure and will become soluble in benzene, making it unusable even if it has an apparent crosslinked structure. Also, RzS+O unit and/or R35
Compared to IOG, s units, R3101, s units and/or
Alternatively, if there are too many 5lO2 units, the organopolysiloxane will take on a strong crosslinked structure, and although it is insoluble in benzene, it will contain less benzene than its own weight, and when mixed with low viscosity silicone oil, the organopolysiloxane will become The polysiloxane polymer does not swell sufficiently, causing separation and discharge of silicone oil, making it impossible to maintain stability and making it unusable. Therefore, in order to obtain a silicone gel composition that is soft and has good stability, (although it is also influenced by the molecular weight of the polymer) (R2SiO units and/or R=SiOo, 5 units): ( R3iO,
, 5 units/or 3I02 units) within the range of 1:1 to 30:1 gives preferable results.

In each of the above structural units, R is a hydrogen atom; an alkyl group such as a methyl group, an ethyl group, or a propyl group; an aryl group such as a phenyl group or a tolyl group; an aliphatic unsaturated group such as vinyl M'6; or may be of a different kind.

Such an organopolysiloxane polymer having a three-dimensional crosslinked structure that is insoluble in benzene but can contain more than its own weight of benzene can be synthesized, for example, by various methods as 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 a dehydrogenation reaction and a condensation reaction. How to do it.

■ 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 one molecule in a catalytic amount. A method of heating in the presence of an alkali metal hydroxide, platinum compound, etc. to perform a dehydrogenation condensation reaction.

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

■ An organopolysiloxane having at least two silicon-bonded hydroxyl groups in one molecule and an organopolysiloxane having at least two silicon-bonded alkoxyl groups in one molecule are combined with a catalytic amount of an alkali metal. A method of performing a dealcoholization reaction by heating in the presence of a hydroxide, organometallic tin compound, etc.

By any of these methods, it is possible to easily obtain an organopolysiloxane polymer having a three-dimensional crosslinked structure that is insoluble in benzene but can contain more than its own weight of benzene.

Examples of the partially crosslinked organopolysiloxane polymer (a) other than the above include organopolysiloxane polymers that are insoluble in silicone oil but swell sufficiently;
(a) Organohydrodiene polysiloxane and (
B) A polymer obtained by addition polymerizing an aliphatic unsaturated group-containing organopolysiloxane, some of which have a three-dimensional crosslinked structure.

The molecular structure of the polysiloxane (a) and (a) used here may be straight, branched, or cyclic, but in order to control the synthesis reaction of the desired organopolysiloxane polymer, It is more preferable that the chain be linear.

Here, each of the hydrogen atom bonded to a silicon atom in the organohydrodiene polysiloxane (A) and the aliphatic unsaturated group in the aliphatic unsaturated group-containing organopolysiloxane (B), which are reactive groups, is one molecule. The presence of at least two of them is essential for forming a three-dimensional crosslinked structure in a part of the organopolysiloxane polymer obtained by polymerizing both.

Further, the position of each of these reactive groups in the molecule is within the molecular chain for boat fishing, but may be at the end of the molecular chain.

In addition, in order to obtain a soft and stable silicone gel composition, the content of each of these reactive groups in the organopolysiloxane should be adjusted to 1 if the molecular structure is linear or branched. It is preferably 20 mol% to 20 mol%, and 1 to 50 mol% in the case of cyclic ones. If the content exceeds this range, 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, making it impossible to stably maintain it. Conversely, if the content is less than this range, the silicone gel composition tends to have poor structural viscosity.

(A) The organohydrodiene polysiloxane is H
3iO,, unit, R31O3,s unit, R11SiO
Unit, R25iO unit, R2H3iOo, s unit, R
*Si mouth. . , units, etc. Here, R
Examples include alkyl groups such as methyl, ethyl, propyl and butyl groups, aryl groups such as phenyl and tolyl groups, cyclohexyl groups, or some or all of the hydrogen atoms bonded to the carbon atoms of these groups. halogen atom,
Examples include unsubstituted or substituted-valent hydrocarbon groups, excluding aliphatic unsaturated groups such as vinyl groups, selected from groups substituted with cyano groups and the like.

Typical examples of such things are (CI+,),
5iO-1f(Cl13)2SiO, (7Cl13
1IS+0].

Si (CI+3) s (however, p=10~500,
Methylhydrodiene polysiloxane containing units of q=2 to 50) is a suitable material.

Further, examples of the aliphatic unsaturated group of the aliphatic unsaturated group-containing organopolysiloxane (B) include vinyl groups, aryl groups, etc., but vinyl groups are common, and organovinyl polysiloxanes include: (CH2=CH)
S i[]1. s unit, R31O,,, unit, R(C
lhCH2) Sin unit, LSiOSin unit (Cfl
=Ct12) Sino, s unit, R: +5iOo,
Examples include those consisting of s units. Here, R is the above (
It has the same meaning as in case b).

A typical example of this is (C1l,=C
H) (CH-), 5iO-1f (CII+) 2s
lOte1 and -5i (CH, +), (CH=Cl12)
(However, the unit of r = 10 to 100) or (CH
,), 5iO-1 壬((:I+3) R31Osj+
(CII=C112) CI, 5tO)i and -Si
(C1b) 3 (However, m=10~500, n=2~
Examples include methylvinylpolysiloxanes comprising units of 50), which may also be mixtures and are suitable materials.

Such an 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. After blending siloxane and organovinylpolysiloxane so that the molar ratio of water groups bonded to silicon atoms, which are reactive groups, to vinyl groups is in the range of 1/3 to 3/1, platinum or palladium The target organopolysiloxane polymer which is insoluble in silicone oil can be easily obtained by adding an addition polymerization catalyst such as JP-B No. 33-996.
It is preferable to use chloroplatinic acid described in Publication No. 9.

On the other hand, the low-viscosity silicone oil (b) is not particularly limited, but any one having a viscosity of about 50 cs or less can be suitably used. 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. Examples of the low-viscosity silicone oil include dimethylpolysiloxane, methylphenylpolysiloxane, cyclic octamethylcyclotetrasiloxane, and decamethylcyclopentasiloxane with a low degree of polymerization, and one of these or Two or more types are appropriately selected and used.

The silicone gel composition (component (B)) is prepared by thoroughly kneading the partially crosslinked organopolysiloxane polymer (a) obtained as described above and the low-viscosity silicone oil (b), and then swelling. It can be easily prepared by Here, the mixing ratio of (a) and (b) is 5 by weight.
:95-30 near 0, preferably 10:90-25 near 5. If the amount of the partially crosslinked organopolysiloxane polymer is small, it becomes fluid viscous and a good gel structure cannot be maintained, whereas if it is too large, it becomes difficult to obtain a soft gel composition.

The aqueous base material used as component (C) in the present invention is composed of water alone or a combination of water and a water-soluble polymer, a water-swellable clay mineral, or a polyhydric alcohol. Specifically, water-soluble polymers include polyacrylic acid compounds such as carboxyvinyl polymers, cellulose compounds such as starch, methyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose, and polysaccharide compounds such as carrageenan, xanthan gum, and alginates. Examples include compounds. Examples of water-swellable clay minerals include kaolin and bentonite. Further, examples of the polyhydric alcohol include glycerin, 1,3-butylene glycol, dipropylene glycol, propylene glycol, and the like.

Here, when the above-mentioned water-soluble polymer, water-swellable clay mineral, or polyhydric alcohol is used as a component of the aqueous base material, the blending ratio of each component is preferably within the following range.

Water: Water-soluble polymer = 99.9: 0.1-90: IQ
Water: water-swellable clay mineral = 99.5: 0.5-80
: 20 water: polyhydric alcohol - 90:10 to 20:80
Moreover, these aqueous base materials can be used individually or in combination of 2 or more types.

The blending ratio of the oil base (8), the silicone gel composition (B), and the aqueous base (C) that constitute the oil composition of the present invention is preferably within the following range.

Ingredients Preferred amount Particularly preferred amount (8)
20-90% by weight 40-70% by weight (B) 5-7
0% by weight 15-50% by weight (C) 0.5-50
Weight% 0.5-20% by weight In addition, the blending ratio of component (8) and component (0) is 90:10-25 near 5, component (
The blending ratio of A) and component (C) is 99:1 to 30 near 0
It is preferable that it is in the range of .

In order to produce the oily composition of the present invention, the above components (8) to
(C), that is, the oil base, the silicone gel composition, and the aqueous base may be mixed according to a conventional method.

Although the order of addition is not particularly limited, it is preferable that the oil base, silicone gel composition, and aqueous base be in a stable state by mixing.

Cosmetics containing the oil-based composition of the present invention include basic cosmetics such as creams and emulsions; hair styling products such as hair styling products;
Examples include makeup cosmetics such as foundation, white powder, red bean paste, eye shadow, lipstick, and nail treatments.

In addition to the above-mentioned essential ingredients, the cosmetic of the present invention may contain fragrances, preservatives, ultraviolet absorbers, surfactants, antioxidants, beauty ingredients, polymer compounds, and cosmetic powders to the extent that they do not prevent the effects of the present invention. The body etc. can be blended as appropriate depending on the product type and cosmetic purpose.

[Action and effect of invention]

The cosmetic of the present invention contains an oil base, a silicone gel composition, and an aqueous base mixed and dispersed therein.

The low-viscosity silicone oil blended into this silicone gel composition exists incorporated into the three-dimensional crosslinked structure of the partially crosslinked organopolysiloxane polymer. That is, the gel structure of this silicone gel composition is quickly destroyed by a slight external force, so when using the cosmetic of the present invention, the contained silicone gel composition can be removed by rubbing it with the application body or spreading it on a desk. Viscosity silicone oil oozes out quickly.

In addition, water, water-soluble polymers, water-swellable clay minerals, and polyhydric alcohols are aqueous base materials that exist in the form of droplets that do not mix with C1 and others. Therefore, volatilization of water is effective. When used, the heavy oily feel often seen with oil-based makeup cosmetics is eliminated, and the makeup effect is improved.

Therefore, the chemical ml of the present invention has characteristics such as adhesion, covering power, and water resistance of a cosmetic film that are unique to oil-based products, and since the low-viscosity silicone oil acts directly on the skin, it does not cause stickiness or oiliness. It has a smooth, slippery, and light feel without any sagging. Moreover, the cosmetic of the present invention has a good cosmetic effect, such as no oily shine on the cosmetic film, a natural and good finish, and good makeup retention.

〔Example〕

Next, the present invention will be explained with reference to reference examples and examples.

Reference Example 1 Trimethylsilyl end-capped dimethylmethylhydrodiene polysiloxane [molecular weight 2300° CH, H3iO:
(CH3)=SiO=1:4 (molar ratio)]
11% potassium hydroxide solution ethanol:water = 2:l
(weight ratio)] was added, and a polymerization reaction was carried out by heating and refluxing to obtain a reaction product. Next, this reaction product was washed with water to remove the alkaline agent, and then air-dried to produce a silicone polymer that is insoluble in benzene and can contain 180% of its weight in benzene.

2 parts by weight of this silicone polymer and 8 parts by weight of dimethylpolysiloxane (viscosity: 5 cs) were dispersed and mixed, thoroughly kneaded using three rolls, and swollen to prepare a silicone gel composition.

Reference Example 2 In a planetary mixer having an internal volume of about 51 cm, a trimethylsilyl end-capped dimethyl methylhydrodiene polysiloxane (average molecular fi2340.5i-f14.5 mol%
), dimethylvinylsilyl end-capped dimethylpolysiloxane (average molecular weight 930, vinyl group 7.7 mol%) 7], and Og were added and mixed with stirring.

To the same mixed solution, 0.5 g of a 2% isopropyl alcohol solution of chloroplatinic acid was added, the temperature was raised to 70 to 80°C, and stirring was continued for 2 hours. After that, the inside of the system was adjusted to 5~IOmmH.
The pressure was reduced to 1.g, and the Upping was continued for 30 minutes. The resulting organopolysiloxane polymer was a colorless, flexible solid.

After dispersing and mixing 25 parts by weight of this organopolysiloxane polymer and 75 parts by weight of dimethylpolysiloxane (viscosity: 6 cs), the mixture was thoroughly kneaded using a triple roll and swelled to prepare a silicone gel composition.

Example 1 Paste-like foundation: A paste-like foundation having the composition shown in Table 1 was prepared by the following manufacturing method.

(Manufacturing method) Step A Two components (1) to (3) are mixed and heated and dissolved.

B: Mix and dissolve components (6) to OI).

// C' Component 0 to 00 are mixed uniformly and then ground.

D = each mixture obtained in step C to step 8 above and (4) or (5)
The mixture is uniformly mixed in a three-roll mill, heated and melted, then poured into a container, cooled and solidified to obtain a paste-like foundation.

Margins below (sensory evaluation) Two types of the resulting paste-like foundations, one immediately after manufacture and one left in a closed tube container and left for one month, were evaluated by conducting a usage test by 20 female panelists. Evaluation points were assigned to each item as shown below, and further judgments were made. The results are shown in Tables 2 and 3.

Evaluation score very good 3 points good or average 2 points bad 1 point judgment Average score 2.5 or more ◎ Average score 2.0 to less than 2.5 ○ Average score 1.5 to less than 2.0 △ Average score 1.5 Less than It had a moist feel and a good feel when used, and was also excellent in stability over time, such as moisture retention ability.

Example 2 Water-containing oily base: (Component) Weight % (1)
Dipene querite fatty acid ester 20.0 (2) Lanolin 10.
0 [3) Purified water 20.0 (
4) Silicone gel composition (obtained in Reference Example 1) 50.0 (Production method) Mix A, components (1) and (2).

B. Gradually add component [3] to A and stir vigorously.

Add [4] to C and B and mix.

Example 3 Habo Beni: (Ingredients) Weight % (1)
Dextrin fatty acid ester 5.7 (2) Polyisobutylene 9.7 (3) Glyceryl triisooctoate 2.0 (4) Liquid paraffin 26.6 (5) Silicone gel composition (obtained in Reference Example 1) 25.0 (6) Methyl cellulose 0.1 (7) Purified water
9.9(8) Nylon powder
3.0(9) Mica
Remaining amount OQ Coloring pigment
6.200 Fragrance
0.1 (Production method) A. Mix and heat components (1) to (4) to dissolve.

B. Mix and swell components (6) to (7).

C2 components (8) to (11) are mixed uniformly and then pulverized.

After mixing D, ASB and C, (5) and 00 were added and mixed uniformly in a three-roll mill, heated and melted, then poured into a container and cooled to solidify to obtain a nearly red color.

Example 4 Stick-shaped eye cream: (Ingredients) Weight % (1)
Microcrystalline wax (m, p, 85℃) 12.0 (
2) Pentaerythritol rosinate 8.0 (3
) Dipentaerythritol tetra 12-hydroxystearic acid sesquistearic acid hemirodine ester 3.5 (4) Chryceryl isostearate 13.0 (5) 2-Ethylhexane i Seventy Jl, 6.0 (6) Propylene glycol cicapric acid i 0.0 (7) Diglyceryl isostearate 18.0 (8) Silicone gel composition (obtained in Reference Example 2> 18.0 (9)
Hydroxyethyl cellulose 0,5αO purified water
Remaining amount: 0D Diglyceryl triisostearate: 2.00 Vitamin E acetate: 0.5 (manufacturing method) C. Mix and heat components (1) to (7), Ql), and dissolve.

B. Mix and swell component (9) and αO.

After mixing C, A, B and component (8), they were uniformly mixed in a three-roll mill, heated and melted, and then poured into a container and cooled to solidify to obtain a stick-shaped eye cream.

that's all

Claims (1)

[Claims] 1. The following components (A) to (C) (A) an oily base containing a semi-solid oil or liquid oil and a solid oil and/or an oily gelling agent (B) a partially crosslinked type Silicone gel composition consisting of an organopolysiloxane polymer and a low-viscosity silicone oil (C) One type selected from water alone, or a combination of water and a water-soluble polymer, a water-swellable clay mineral, or a polyhydric alcohol. An oily composition comprising two or more types of aqueous base materials. 2. A cosmetic containing the oily composition according to claim 1.