JP3450541B2 - Powder for cosmetics and cosmetics containing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention contains a powder for cosmetics which is excellent in water repellency, does not lose makeup, and has a good feeling in use such as elongation on skin, adhesion and smoothness, and a powder containing this powder. Regarding cosmetics to do.

[0002]

2. Description of the Related Art Cosmetics containing powder for cosmetics include foundation, white powder, blusher, eye shadow,
Make-up cosmetics such as eyebrow, body powders, body cosmetics such as baby powders are commercially available. In cosmetics containing these powders for cosmetics, elongation, smoothness, adhesiveness and Makeup performance such as makeup breakdown is a problem.

Therefore, conventionally, in order to improve these makeup performances, the surface of the powder for cosmetics is subjected to coating treatment, in particular, in order to prevent makeup breakdown due to sweat or the like,
The surface of the powder is treated with a treatment agent having water repellency.

Conventionally, silicone has been used as a surface treatment material for powders for cosmetics. For example, JP-A-56-16404
In JP-A-56-27512 and JP-A-56-27512, a silicone oil and an oil agent are added and mixed by stirring, or a mechanochemical reaction such as pulverization is performed and mixed, and then baking is performed. However, in these methods, since high baking treatment is carried out at a high temperature of 350 ° C. and low baking treatment is carried out at a high temperature of 150 ° C., it can be applied only to some stable inorganic pigments, and not to most organic pigments. It had drawbacks.

When a catalyst is used to lower the baking temperature, the treatment temperature can be lowered, while
Since the catalyst remains and promotes the deterioration of the silicone surface remarkably, there is a problem that it is not practical.

Further, a method is known in which an organosiloxane having Si-H in the molecule is brought into contact with a powder in a vapor state to carry out cross-linking polymerization on the surface of the powder, but this cross-linking polymerization is completely caused by steric hindrance. Does not proceed and unreacted Si-H remains. In the presence of Si-H, hydrogen may be generated when water and alcohol coexist, which is extremely dangerous when blended into a product, and this is not a preferable method either.

[0007]

Therefore, a cosmetic composition which is obtained at a low processing temperature, is excellent in water repellency, has a good feel on use such as elongation on skin, adhesion and smoothness, and is also excellent in safety. The development of powder for powder was desired.

[0008]

Under the circumstances, as a result of intensive studies, the present inventors have found that by using a specific carboxyl group-modified organo (poly) siloxane as a surface treatment material for powder, a low treatment temperature can be obtained. The present invention has been completed by finding that a powder for cosmetics having excellent makeup performance can be obtained.

That is, according to the present invention, at least one silicon atom of the organo (poly) siloxane is represented by the following general formula:
(1)

-R ^1- (O) _a -R ² -COOM (1)

[Wherein R ¹ represents a linear or branched alkylene group having 1 to 20 carbon atoms, R ² represents a linear or branched alkylene group having 1 to 4 carbon atoms, M represents a hydrogen atom or It represents a monovalent cation, and a represents 0 or 1. ] A carboxyl group-modified organo (poly) modified with a group represented by
With siloxane , talc, kaolin, sericite, my
Selected from mosquito, titanium oxide, barium sulfate and iron oxide
The present invention provides a water-repellent cosmetic powder obtained by treating one or more powders and a cosmetic containing the same.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The term "organo (poly) siloxane" in the present invention means that it includes any of high molecular weight organopolysiloxanes to low molecular weight organosiloxanes.

In the carboxyl group-modified organo (poly) siloxane which is the surface treatment material used in the present invention,
Examples of the linear or branched alkylene group having 1 to 20 carbon atoms represented by R ¹ in the general formula (1) include methylene, ethylene, propylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, heptamethylene, octane. Methylene, nonamethylene, decamethylene, undecamethylene, dodecamethylene, tridecamethylene, tetradecamethylene, pentadecamethylene, hexadecamethylene groups and the like, preferably those having 2 to 12 carbon atoms, such as ethylene, propylene, trimethylene, tetra Examples thereof include methylene, pentamethylene, hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, undecamethylene and dodecamethylene groups, with octamethylene, nonamethylene and decamethylene groups being particularly preferred.

In the general formula (1), the number of carbon atoms represented by R ² is 1 to 4
Examples of the linear or branched alkylene group include methylene, ethylene, propylene, trimethylene, 1-methyltrimethylene, and tetramethylene groups, preferably those having 1 to 2 carbon atoms, such as methylene and ethylene groups. To be

In the general formula (1), M includes a hydrogen atom; an ion of an alkali metal such as lithium, sodium, potassium, rubidium and cesium; a salt of ammonium, an alkylamine or an alkanolamine, and the like, and particularly a hydrogen atom. Is preferred.

In the general formula (1), a represents 0 or 1, but 0 is preferable.

The carboxyl group-modified organo (poly) siloxane used in the present invention may be any one as long as the group (1) is bonded to any one or more of the silicon atoms in the molecule, and the bonding site is limited. Not done. Therefore, the side chain type,
Although any structure called double-end type, single-end type, T structure type, etc. can be used, a structural unit represented by the following general formula (3), or a general formula (3) or ( Those having a structural unit represented by 4) are preferable.

[0018]

[Chemical 2]

[In the formula, R ¹ , R ² , M and a have the same meanings as described above, and R ^{8 to} R ¹⁰ are the same or different and each represents an alkyl group, an alkoxyl group or a phenyl group. ]

In formulas (3) and (4), the alkyl group represented by R ^{8 to} R ¹⁰ is preferably an alkyl group having 1 to 22 carbon atoms, for example, methyl, ethyl, propyl, isopropyl, butyl, Examples thereof include t-butyl, pentyl, hexyl, octyl, tetradecyl, octadecyl and docosyl groups, with a methyl group being particularly preferred. The alkoxyl group is preferably an alkoxyl group having 1 to 22 carbon atoms, and examples thereof include a methoxyl group, an ethoxyl group, a propoxyl group, a butoxyl group, a pentyloxyl group, a 2-ethylbutoxyl group, and a 2-ethylhexyloxyl group. Is preferred.

More preferable carboxyl group-modified organo (poly) siloxane is represented by the following general formulas (2), (5) or
Examples include those represented by (6), and those represented by general formula (2) are particularly preferable.

[0022]

[Chemical 3]

[In the formula (2), R ^{3 to} R ⁷ are the same or different and each represents an alkyl group, an alkoxyl group or a phenyl group, and at least one of X and b Y and Z is represented by the general formula (1 ), The remainder represents an alkyl group, an alkoxyl group or a phenyl group, and b represents a number from 0 to 1000.
In the formula (5), R ¹¹ represents an alkyl group, an alkoxyl group or a phenyl group, and at least one r Y ′ is a general formula.
In the group represented by (1), the rest represents an alkyl group, an alkoxyl group or a phenyl group, and r is 3 to 100 (preferably 3).
~ 10) indicates the number. In the formula (6), R ^{12 to} R ²¹ are the same or different and each represent an alkyl group, an alkoxyl group or a phenyl group, and at least one of t Y ″ and v Z ″ is at least one of the general formula (1) And the rest is an alkyl group,
It represents an alkoxyl group or a phenyl group, s, t and u are numbers from 1 to 1000, and v is a number from 0 to 1000. ]

As the alkyl group and alkoxyl group in R ^{3 to} R ⁷ in the general formula (2) and groups other than the group represented by the general formula (1) among X, Y and Z, the above general formula ( 3)
And the same as R ^{8 to} R ¹⁰ in (4),
The carboxyl group-modified organo (poly) siloxane (2) may be any one of R ^{3 to} R ⁷ and general formulas among X, Y and Z.
It is particularly preferable that all groups other than the group represented by (1) are methyl groups.

The above-mentioned carboxyl group-modified organo (poly) siloxane used in the present invention can be prepared by a known method [for example, JP-B-49-4840, JP-B-48-42960, JP-A-61-223031 and PG. George, M. Probe
r, JR Elliott, Chem. Rev., 1065 (1965)], but commercially available products can be used as they are. Specific examples thereof include X-22-3701E and X-22-371.
0, X-22-162A, X-22-162C (above, Shin-Etsu Silicone Co., Ltd.), SF8418, BY16-880, BY16-754, BY16-750 (above,
Toray Dow Corning Silicone), XF42-508,
Examples include XF42-711, XF42-A0383, XF42-A2480 (above, manufactured by Toshiba Silicone Co., Ltd.).

The powder to be treated with the above-mentioned carboxyl group-modified organo (poly) siloxane used in the present invention is not particularly limited, and any powder which is usually blended in cosmetics can be used. For example, talc, kaolin, sericite, muscovite, synthetic mica, phlogopite, phlogopite, biotite, lithia mica, vermiculite,
Magnesium carbonate, calcium carbonate, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate,
Inorganic powder such as barium silicate, strontium silicate, tungstate metal salt, silica, hydroxyapatite, zeolite, boron nitride, ceramics powder; nylon powder, polyethylene powder, benzoguanamine powder, tetrafluoroethylene powder, distyrenebenzene pinhole polymer powders, organic powders such as microcrystalline cellulose; inorganic red pigments iron oxide (red iron oxide), iron titanate; titanium oxide, acid magnesium, zirconium oxide, inorganic white pigments such as barium sulfate γ-
Inorganic brown pigments such as iron oxide; Inorganic yellow pigments such as yellow iron oxide and ocher; Inorganic black pigments such as black iron oxide and carbon black; Inorganic purple pigments such as mango violet and cobalt violet; Chromium oxide, water Inorganic green pigments such as chromium oxide and cobalt titanate; Inorganic blue pigments such as ultramarine blue and dark blue; titanium oxide coated bismuth oxychloride, bismuth oxychloride, titanium oxide coated talc, fish scale foil, pearls such as colored titanium oxide coated mica Pigments: Clay minerals such as Benton; Metal powder pigments such as aluminum powder and copper powder; Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228
No. 405, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, Blue No. 404, etc. Organic pigments; Red No. 3, Red No. 104
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
No. 203, yellow No. 203, green No. 3, blue No. 1, etc. lakes with zirconium, barium or aluminum; natural pigments such as chlorophyll and β-carotene.

The size and shape of these powders are not particularly limited, but flat particles or spherical particles having a diameter of 0.01 to 80 μm are preferable.

The method of treating these powders with the carboxyl group-modified organo (poly) siloxane is not particularly limited, but generally, the carboxyl group-modified organo (poly) siloxane itself or a solution thereof is mixed with the powder and then filtered or The method of distilling off the solvent is preferred. Any solvent may be used as long as it can dissolve the carboxyl group-modified organo (poly) siloxane, and examples thereof include hexane, ethanol, isopropyl alcohol, tetrahydrofuran, isopropyl ether, diethyl ether, acetone, toluene, chloroform, dichloromethane and methyl ethyl ketone. , Xylene, ethyl acetate, and silicones such as octamethylcyclotetrasiloxane. Among them, isopropyl ether, isopropyl alcohol, and hexane are preferable.

The treatment amount of the powder with the carboxyl group-modified organo (poly) siloxane varies depending on the kind thereof, but is usually 0.2 to 50% by weight, preferably 1 to 20% by weight of the raw material powder. If the treatment amount is too small, the water repellency is not sufficient, and if it is too large, the properties of the inorganic powder itself may be impaired. The mixing temperature of the carboxyl group-modified organo (poly) siloxane itself or its solution and the powder is preferably 20 to 90 ° C, particularly preferably 40 to 80 ° C. The amount of the solvent is preferably 0.3 to 30 times, and more preferably 0.5 to 10 times the weight of the powder. The mixing time varies depending on the amount to be treated and the type of powder, but is usually 1 to 15 hours, preferably 2 to 10 hours.

The powder for cosmetics of the present invention prepared as described above is excellent in water repellency, spreadability on skin, stickiness, smoothness, etc., and is highly safe. It can be added to various cosmetics. Examples of such cosmetics include makeup cosmetics such as foundation, eye shadow, eyebrow, white powder, and cheek red, body cosmetics such as body powder and baby powder, and basic cosmetics such as emulsion and cream. The content of the powder for cosmetics of the present invention in the cosmetics of the present invention varies depending on the type of the intended cosmetics, but is usually preferably in the range of 0.1 to 99% by weight.

In addition to the powder for cosmetics of the present invention, the cosmetics of the present invention may contain, if necessary, components that are usually added to cosmetics within a range that does not impair the effects of the present invention. . Such components include, for example, solid and semi-solid oil components such as petrolatum, lanolin, ceresin, microcrystalline wax, carnauba wax, candelilla wax, higher fatty acids, higher alcohols; squalane, liquid paraffin, ester oil, diglyceride, triglyceride,
Fluid oils such as silicone oils; Fluorine-based oil agents such as perfluoropolyether, perfluorodecalin, perfluorooctane; water-soluble and oil-soluble polymers, surfactants, inorganic and organic pigments, inorganics treated with silicone or fluorine compounds And colorants such as organic pigments and organic dyes, ethanol, preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, ultraviolet absorbers, humectants, blood circulation promoters, cooling sensation agents, antiperspirants. , Bactericides, skin activators and the like.

[0032]

The present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.
The carboxyl group-modified organo (poly) siloxane used in the following examples is shown below.

[0033]

[Chemical 4]

Example 1 Carboxyl group-modified organo (poly) siloxane (1) 15
g and isopropyl ether 500 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of sericite having an average particle size of 7 μm was added, and the mixture was stirred at 60 ° C. for 4 hours. Then, isopropyl ether was distilled off under reduced pressure and dried to obtain 162 g of cosmetic powder.

Example 2 Carboxyl group-modified organo (poly) siloxane (2) 13
g and isopropyl ether 500 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of sericite having an average particle size of 8 μm was added, and the mixture was stirred at 60 ° C. for 4 hours. Then, isopropyl ether was distilled off under reduced pressure and dried to obtain 160 g of cosmetic powder.

[0036]

Example 4 Carboxyl group-modified organo (poly) siloxane (4) 17
g and hexane 400 g were mixed and heated to 60 ° C. After heating and mixing, add 150g of titanium dioxide to this and mix at 4 ℃ at 4 ℃.
The mixture was stirred for an hour. Then, hexane was distilled off under reduced pressure and dried to obtain 162 g of cosmetic powder.

Example 5 Carboxyl group-modified organo (poly) siloxane (4) 20
g and hexane 400 g were mixed and heated to 60 ° C. After heating and mixing, add 150 g of barium sulfate to this and mix at 4 ℃ at 4 ℃.
The mixture was stirred for an hour. Then, hexane was distilled off under reduced pressure and dried to obtain 166 g of cosmetic powder.

Example 6 Carboxyl group-modified organo (poly) siloxane (4) 15
g and hexane 400 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of mica was added thereto, and mixed and stirred at 60 ° C. for 4 hours. Then, hexane was distilled off under reduced pressure and dried to obtain 162 g of cosmetic powder.

Example 7 Carboxyl group-modified organo (poly) siloxane (4) 15
g and hexane 500 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of sericite having an average particle size of 7 μm was added, and the mixture was stirred at 60 ° C. for 4 hours. Then, hexane was distilled off under reduced pressure and dried to obtain 163 g of cosmetic powder.

[0041]

Example 9 Carboxyl group-modified organo (poly) siloxane (5) 25
g and hexane 400 g were mixed and heated to 60 ° C. After heating and mixing, add 150g of titanium dioxide to this and mix at 4 ℃ at 4 ℃.
The mixture was stirred for an hour. Then, hexane was distilled off under reduced pressure and dried to obtain 171 g of cosmetic powder.

Example 10 Carboxyl group-modified organo (poly) siloxane (5) 25
g and hexane 400 g were mixed and heated to 60 ° C. After heating and mixing, add 150 g of barium sulfate to this and mix at 4 ℃ at 4 ℃.
The mixture was stirred for an hour. Then, hexane was distilled off under reduced pressure and dried to obtain 172 g of powder for cosmetics.

Example 11 Carboxyl group-modified organo (poly) siloxane (5) 25
g and hexane 400 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of mica was added thereto, and mixed and stirred at 60 ° C. for 4 hours. Then, hexane was distilled off under reduced pressure and dried to obtain 172 g of powder for cosmetics.

Example 12 Carboxyl group-modified organo (poly) siloxane (5) 25
g and hexane 500 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of sericite having an average particle size of 7 μm was added, and the mixture was stirred at 60 ° C. for 4 hours. Then, hexane was distilled off under reduced pressure and dried to obtain 173 g of cosmetic powder.

[0046]

Example 14 Carboxyl group-modified organo (poly) siloxane (6) 30
g and hexane 500 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of sericite having an average particle size of 7 μm was added, and the mixture was stirred at 60 ° C. for 4 hours. Then, hexane was distilled off under reduced pressure and dried to obtain 176 g of cosmetic powder.

Example 15 Carboxyl group-modified organo (poly) siloxane (7) 25
g and hexane 500 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of sericite having an average particle size of 7 μm was added, and the mixture was stirred at 60 ° C. for 4 hours. Then, hexane was distilled off under reduced pressure and dried to obtain 172 g of powder for cosmetics.

Example 16 Carboxyl group-modified organo (poly) siloxane (8) 20
g and hexane 500 g were mixed and heated to 60 ° C. After heating and mixing, 150 g of sericite having an average particle size of 7 μm was added, and the mixture was stirred at 60 ° C. for 4 hours. Then, hexane was distilled off under reduced pressure and dried to obtain 169 g of cosmetic powder.

[0050]

Test Example 1 <Water repellency> 0.2 g of powder for cosmetics was weighed and 1 with an IR tabletting machine.
The pellet was pressed at 00 kg / cm ² for 5 minutes to produce a pellet having a diameter of 1 cm. A drop of ion-exchanged water was dropped on the surface of the pellet using a microsyringe, and after 30 seconds, the contact angle was measured 3 times to measure the water repellency of the powder. The results are shown in Table 1. ◎: 110 ° or more ○: 90 ° or more and less than 110 ° △: 70 ° or more and less than 90 ° ×: less than 70 °

<Evaluation of Feeling> Five specialist panelists comprehensively evaluated the feeling of the powder from the feeling of stretching, squeaking and roughness of the powder. The evaluation was carried out according to the following criteria by a 5-step evaluation using a standard value of 3 for the feel of sericite alone having an average particle size of 7 μm, and the average values are shown in Table 1. 1: Poor feel 2: Poor feel 3: Feel similar to 7 μm sericite 4: Fair feel 5: Good feel

[0053]

[Table 1]

Example 18 Oily foundation (1) Mixed pigment obtained by mixing various powders treated with carboxyl group-modified organo (poly) siloxane (5) Titanium oxide treated (powder of Example 9) 20.0 ( % By weight) Treated sericite A (powder of Example 12) 5.0 Treated iron oxide (red, yellow, black) (treated according to Example 9) 5.0 Treated mica (powder of Example 11) 7.0 Treated Talc (treated according to Example 9) 6.5 (2) Dimethylpolysiloxane (KF-96A, 6cs, manufactured by Shin-Etsu Silicone Co., Ltd.) 5.0 (3) Bis (tridecafluorooctyl) phosphoric acid 3.0 (4) Perfluoro Polyether (Montefloss, FONBLIN HC-04) 45.0 (5) Dextrin fatty acid ester (Chiba Flour Mill, Leopearl KL) 1.0 (6) Candelilla wax 2.3 (7) BHT 0.1 (8) Fragrance Total 100.0

Of the above composition, the components except the powder and the fragrance were mixed and melted at 90 ° C. Then, the powder was gradually added while stirring with a disper, and they were sufficiently stirred and mixed. Finally, the fragrance was added, and the mixture was filled in a gold plate and cooled.

Example 19 Powdery Foundation (1) Mixed pigment obtained by mixing various powders treated with carboxyl group-modified organo (poly) siloxane (4) Iron oxide treated (red, yellow, black) (Example) 5.5) (wt%) treated titanium oxide (powder of Example 4) 10.0 treated mica (powder of Example 6) 12.0 treated sericite A (powder of Example 7) 8.0 treated Talc (treated according to Example 7) 40.0 (2) Nylon powder 10.0 (3) Liquid paraffin 5.0 (4) Dimethylpolysiloxane (Shin-Etsu Silicone KF-96, 5000cs) 2.5 (5) Syncrowax HRC (Made by Croda Japan Co., Ltd.) 3.0 (6) Vaseline 2.0 (7) Preservatives Appropriate amount (8) Fragrance Total 100.0

The pigment (1) and the powder (2) were mixed and ground through a grinder. On the other hand, the other components except the fragrance (8) were heated in advance and completely dissolved. The pulverized powder was transferred to a Henschel mixer, the liquid phase previously dissolved was gradually added, and then the fragrance (8) was added and thoroughly stirred and mixed. During this mixing, the rotation frequency of the Henschel mixer was gradually increased. Finally, the granules were made uniform in size through a sieve and placed in a gold plate for compression molding.

Example 20 Mixed pigment obtained by mixing various powders treated with cheek red (1) carboxyl group-modified organo (poly) siloxane (8) Titanium oxide treated (treated according to Example 16 ) 4.0 (wt%) treated sericite A (powder of Example 16) 62.0 treated kaolin (treated according to Example 16) 17.0 (2) liquid paraffin 4.0 (3) zinc stearate 5.0 (4) rice Starch 4.0 (5) Red No. 202 2.8 (6) Blue No. 404 0.25 (7) Fragrance Total 100.0

The pigments (1), (4), (5) and (6) were mixed and ground through a grinder. On the other hand, (2) and (3) were heated and dissolved in advance. Transfer the crushed powder to a Henschel mixer and gradually add the previously dissolved liquid phase, then add the fragrance (7)
Was added and thoroughly mixed with stirring. During this mixing, the rotation frequency of the Henschel mixer was gradually increased. Finally, the granules were made uniform in size through a sieve and placed in a gold plate for compression molding.

Example 21 Eyeliner (1) Mixed pigment obtained by mixing various powders treated with carboxyl group-modified organo (poly) siloxane (3) Treated talc (treated according to Example 3) 55.0 (wt%) treated titanium oxide (treated according to Example 3) 15.0 (2) Carbon black 6.0 (3) Nylon powder 8.0 (4) Dimethyl polysiloxane (Shin-Etsu Silicone Co., Ltd., KF-96A, 6cs) 5.0 (5) Liquid paraffin 9.0 (6) Syncrowax HRC (made by Croda Japan) 1.8 (7) Preservative 0.1 (8) Perfume 0.1 Total 100.0

The powders (1), (2) and (3) were mixed and ground through a grinder. On the other hand, the other components except the fragrance (8) were heated in advance and completely dissolved. The pulverized powder was transferred to a Henschel mixer, the liquid phase previously dissolved was gradually added, and then the fragrance (8) was added and thoroughly stirred and mixed. In addition,
During this mixing, the rotation frequency of the Henschel mixer was gradually increased. Finally, the granules were made uniform in size through a sieve and placed in a gold plate for compression molding.

In all of Examples 18 to 21, cosmetics excellent in water repellency and having a good feel were obtained.

[0063]

The powder for cosmetics of the present invention is obtained at a low processing temperature, has excellent water repellency, does not cause makeup deterioration, and has a good feel on use such as elongation on skin, adhesion and smoothness. is there.

Continuation of front page (72) Inventor Katsumi Kita 1334 Minato Minato, Wakayama, Wakayama Research Institute (56) Reference JP-A-860022 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61K 7/00-7/02 C09C 3/12 CAPLUS (STN)

Claims (3)

(57) [Claims] 1. At least one silicon atom of an organo (poly) siloxane is represented by the following general formula (1) -R ^1- (O) _a -R ² -COOM (1) [wherein R ¹ has ¹ carbon atom (s)]. -20 is a linear or branched alkylene group, R ² is a linear or branched alkylene group having 1 to 4 carbon atoms, M is a hydrogen atom or a monovalent cation, and a is 0 or 1. Indicates. ] A carboxyl group-modified organo (poly) siloxane modified with a group represented by : talc, kaolin, sericite, mica, titanium oxide.
Powder for water-repellent cosmetics obtained by treating one or more powders selected from iron, barium sulfate and iron oxide . 2. A carboxyl group-modified organo (poly) siloxane has the following general formula (2): [In the formula, R ^{3 to} R ⁷ are the same or different and each represents an alkyl group, an alkoxyl group or a phenyl group, and at least one of X and b Y and Z is a group represented by the general formula (1). And the remainder represents an alkyl group, an alkoxyl group or a phenyl group, and b represents a number from 0 to 1000. ] The powder for cosmetics of Claim 1 which is a compound represented by these. 3. The powder for cosmetics according to claim 1 or 2.
Cosmetics contained.