Makeup or cosmetic compositions

There are disclosed makeup or cosmetic compositions comprising polymethylsilsesquiozane powders.

The present application claims the priority of Japanese Pat. Application 
Ser. No. 62-131349 filed on May 29, 1987 
BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates to makeup and cosmetic compositions. More 
particularly, the present invention relates to makeup and cosmetic 
compositions which provide for smooth application and are pleasant to the 
touch. 
2. Statement of the Prior Art 
In general, makeup and cosmetic compositions are basically composed of 
components such as oils, powders, water soluble bases, etc. Further, such 
composition come in a variety of forms such as a solid foundation, 
including solid eye shadows and lipsticks, or liquid emulsion type and 
cream emulsion type foundations, etc. 
A variety of powders are used in makeup and cosmetic compositions for art 
known purposes. Talc, kaolin, zinc white, titanium white, calcium 
carbonate or magnesium carbonate are effectively employed as loading 
pigments. Inorganic pigments include titanium white, zinc white, carbon 
black, iron tetratrioxide, yellow ocher, red iron oxide, amber, 
ultramarine, etc. Organic pigments having a strong coloring property are 
also employed in powder form Additional powders generally employed in 
makeup and cosmetic compositions include zinc stearate, magnesium 
stearate, starch, silica powders, bentonite, etc. 
As the prior art using specific powder components, there are known cosmetic 
compositions in which organic synthetic resin powders are incorporated as 
loading pigments or modifiers to improve clearness of hue, coloring, 
transparency, etc. (cf. Published Unexamined Japanese Patent Application 
No. 99236/1977). Also known are cosmetic compositions in which 
organo-polysiloxane cured powders obtained by grinding an 
organo-polysiloxane elastomer or organo-polysiloxane resin are used to 
improve application (cf. Published Unexamined Japanese Patent Application 
No. 194009/1986). However, in the former case, it is desirable to improve 
the natural appearance of the color In the latter case, the cured rubber 
or resin is pulverized to a powder having an irregular broad particle size 
distribution which is too broad and is extremely difficult to control 
Thus, smoothness of makeup or cosmetic compositions containing these 
powders upon application is insufficient. 
SUMMARY OF THE INVENTION 
An object of the present invention is to provide makeup or cosmetic 
compositions which eliminate the foregoing problems in the prior art and 
can provide extreme smoothness upon application and impart natural color. 
As a result of extensive investigations to achieve the object described 
above, the present inventors have found that by using 
polymethylsilsesquioxane powders as a powder component of makeup or 
cosmetic compositions, excellent effects of natural color and smoothness 
upon application, are gained. Thus, the present invention relates to 
makeup or cosmetic compositions characterized by containing 
polymethylsilsesquioxane powders. 
DETAILED DESCRIPTION OF THE INVENTION 
Polymethylsilsesquioxane powders are the characteristic component in the 
present invention that contribute to smooth application of makeup or 
cosmetic compositions to the skin, to a moisturized feeling and to more 
enhanced functions of pigment powders used as a cosmetic component in 
combination therewith. 
Such polymethylsilsesquioxane powders can be obtained by any of several 
methods. There is a method which comprises either hydrolyzing methyl 
trichlorosilane while spraying it or dropwise adding methyl 
trichlorosilane in large amounts of water to cause hydrolysis and 
condensation (cf. Belgian Patent No. 572,412). There is a method which 
comprises hydrolyzing and condensing methyl trialkoxysilanes, etc. in an 
aqueous solution .containing alkali metal carbonates or alkaline earth 
metal hydroxides (cf. Published Unexamined Japanese Patent Application No. 
72300/1979). There is also a method which comprises hydrolyzing and 
condensing methyl trialkoxysilanes, etc. in an aqueous solution of ammonia 
or amines (cf Published Unexamined Japanese Patent Application No. 
13813/1985), etc. Of these methods, the polymethylsilsesquioxane powders 
obtained by the method of Published Unexamined Japanese Patent Application 
No. 13813/1985 is preferred to achieve the object of the present 
invention, because the powders have a small chlorine content, are free 
from alkali metals or alkaline earth metals and have excellent free 
fluidity In addition and regardless of the method of manufacture, it is 
preferred that the shape of the polymethylsilsesquioxane powders be 
independent and substantially spherical and that more than 80% of the 
whole particles be within the range of .+-.30% of a mean particle diameter 
in the particle size distribution. 
The mean particle diameter of the polymethylsilsesquioxane powders is 
preferably 0.05 to 100 .mu.m, more preferably 0.1 to 20 .mu.m. In case 
that the particle diameter is too small, it is difficult to prepare them. 
Further in case that the particle diameter is too large, it is not only 
difficult to prepare but also it is difficult to achieve the object of the 
present invention 
The amount of the polymethylsilsesquioxane powders to be formulated can 
vary depending upon the form of the particular cosmetic under manufacture 
and is not particularly limited However, it is preferred that the powders 
be incorporated, for example, in the case of press type makeup cosmetic 
compositions, in the range of from 1 to 60 wt% and, in the case of liquid 
makeup cosmetic compositions in the range of from 0.1 to 40 wt%. 
The makeup cosmetic composition of the present invention can be prepared by 
formulating the polymethylsilsesquioxane powders and other cosmetic 
powdery raw materials in cosmetic binder oil and dispersing them 
homogeneously. As the other cosmetic powdery raw materials, there can be 
used loading pigments such as talc, kaolin, zinc white, magnesium 
carbonate, calcium carbonate, silica powders, starch, metal salts of 
higher fatty acid, silk powders, bentonite, etc.; inorganic pigments 
having various colors such as titanium white, zinc white, carbon black, 
iron tetratrioxide, yellow ocher, red iron oxide, amber, ultramarine, 
etc.; organic color pigments such as tar pigment, 62 -carotin, safflower 
pigment, chlorophile, cochineal, etc.; and pearl pigments such as mica 
titanium, etc. 
As the cosmetic binder oil, there can be used those conventionally 
employed, for example, liquid paraffin, vaseline, beeswax, 
microcrystalline wax, olive oil, stearic acid, castor oil; higher alcohols 
such as octyl alcohol, hexadecyl alcohol, etc.; lower alcohols such as 
ethanol, etc.; esters, higher fatty acids, etc. In addition, there may 
also be used siloxanes such as polydimethylsiloxane, 
polymethylphenylsiloxane, etc. 
If necessary, water, surface-active agents, perfume, thickeners, 
antiseptics, etc. can also be formulated in the makeup or cosmetic 
composition of the present invention. 
The makeup or cosmetic composition of the present invention contains the 
polymethylsilsesquioxane powders and can thus provide an extremely smooth 
application and impart favorable natural color.

EXAMPLES OF THE INVENTION 
Hereafter the present invention will be described with reference to the 
examples, wherein "parts" are "parts by weight.infin.. 
Synthesis Example 1 
In a four-necked flask equipped with a thermometer, a reflux condenser and 
stirrer, 500 parts of water and 50 parts of 28% ammonium aqueous solution 
were charged. Then, 200 parts of methyl trimethoxysilane were added 
dropwise to the ammonia aqueous solution over 40 minutes with stirring The 
reaction temperature started from 10.degree. C and reached 30.degree. C 
upon completion of the dropwise addition Next, the system was heated with 
a mantle heater to reflux at 84.degree. C Stirring was continued for about 
an hour at this temperature. After cooling, the precipitated product in 
the flask was collected, washed with water and dried Then, via a 
pulverizing step, polymethylsilsesquioxane powders having a mean particle 
diameter of 2 .mu.m, having a particle diameter of 1.7 to 2.1 .mu.m in 
more than 99% of the whole particles and having excellent free fluidity 
were obtained 
Synthesis Example 2 
In a four-necked flask equipped with a thermometer, a reflux condenser and 
stirrer, 4,000 parts of water and 50 parts of 28% ammonium aqueous 
solution were charged The mixture was stirred at 100 r.p.m for 10 minutes 
to make a homogeneous ammonia aqueous solution Then, 600 parts of methyl 
trimethoxysilane having a chlorine content of 10 ppm calculated as a 
chlorine atom were rapidly added to the ammonia aqueous solution, while 
rotating the stirrer at 5 r.p.m., to form two phases The methyl 
trimethoxysilane phase formed the upper layer and the ammonia aqueous 
solution phase formed the lower layer Then, the stirring rate of the 
stirrer was changed to 20 r.p.m. and hydrolysis and condensation were 
allowed to proceed at the interface between the methyl trimethoxysilane 
and the ammonia aqueous solution, while maintaining the two phase state. 
As the reaction proceeded, the reaction product gradually precipitated in 
the lower layer The lower layer turned white and became turbid because of 
the suspension of the reaction product The methyl trimethoxysilane phase 
in the upper layer became thinner and disappeared in about 3 hours 
(confirmed by observation with the eye). Subsequently, the temperature was 
maintained at 50.degree. to 60.degree. C and the system was stirred for 3 
hours under the same conditions Thereafter, the system was cooled to 
25.degree. C Then, after the precipitated product was filtered through a 
wire gauze of 100 mesh, it was centrifuged to dehydrate, whereby the 
product was rendered cake like. The cake phase was dried in an oven of 
200.degree. C and crushed using a labo jet to give white powders of 
polymethylsilsesquioxane 
The thus obtained polymethylsilsesquioxane powders were substantially 
spherical and had a mean particle diameter of about 1.9 .mu.m. 
Synthesis Example 
Spherical polymethylsilsesquioxane powders having a mean particle diameter 
of about 4.5 .mu.m were obtained in a manner similar to Synthesis Example 
1 except that the amount of 28% ammonium aqueous solution was changed to 5 
parts and the stirring rate after the system was rendered two phase state 
was changed to 25 r.p.m. 
EXAMPLE 1 
In Container (1) were charged 30 parts of talc, 5 parts of kaolin, 25 parts 
of sericite, 10 parts of titanium 5 dioxide and 1 part of red iron oxide. 
While homogeneously mixing them, the mixture was heated at 100.degree. C 
for 2 hours. In the mixture were formulated 5 parts of 
polymethylsilsesquioxane powders obtained in Synthesis Example 1 and 5 
parts of polyethylene powders. While further pulverizing, they were 
homogeneously mixed. 
On the other hand, 3 parts of polydimethylsioloxane having a viscosity of 
100 cSt at 25.degree. C, 4 parts of liquid paraffin, 3 parts of stearyl 
alcohol, 2 parts of beeswax and 2 parts of squalane were charged in 
another Container (2). Then the mixture was heated at 100.degree. C for an 
hour to dissolve homogeneously. Thereafter, the contents of Container (1) 
and Container (2) were combined and mixed homogeneously. After 
pulverizing, press molding was performed to give a cosmetic foundation. 
EXAMPLES 2 and 3 
Two kinds of foundations were obtained in a manner similar to Example 1 
except that 5 parts of spherical polymethylsilsesquioxane powders obtained 
in Synthesis Examples 2 and 3, respectively were used instead of 5 parts 
of polymethylsilsesquioxane powders obtained in Synthesis Example 1 
COMATIVE EXAMPLES 1 
A foundation was obtained in a manner similar to Example 1 except that 5 
parts of polyethylene powders were used instead of 5 parts of 
polymethylsilsesquioxane powders. 
SYNTHESIS EXAMPLE 4 
A mixture of 100 parts of polysiloxane composed of a dimethylsiloxane units 
end-stopped with dimethylvinylsilyl groups and having a viscosity of 500 
cSt at 25.degree. C. with 3.5 parts of polymethylhydrogensiloxane 
end-stopped with trimethylsilyl groups and having a viscosity of 20 cSt at 
25.degree. C was mixed with chloroplatinic acid in an amount of 10 ppm as 
platinum metal based on the total amount of the mixture and isopropyl 
alcohol solution The mixture was heated at 150.degree. C for 2 hours to 
give rubbery cured product The cured product was ground into fine powders 
with an atomizer to give powders having a particle diameter of 1 to 50 
.mu.m. 
COMATIVE EXAMPLE 2 
A foundation was obtained in a manner similar to Example 1 except that 5 
parts of the powders of Synthesis Example 4 described above were used 
instead of 5 parts of polymethylsilsesquioxane powders obtained in 
Synthesis Example 1. Evaluation test 
With respect to the 5 cosmetic of foundations obtained in the examples and 
comparative examples, a use test by application was performed by 10 female 
panel members. The results are shown in Table 1. Evaluation standards are 
as follows. Indication is by a mean value. 
Extremely good =3, Good =2, Ordinary =1 
TABLE 1 
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Comparative 
Example Example 
1 2 3 1 2 
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Spreadability 
2.1 2.9 2.8 1.6 2.0 
Appearance 2.8 2.9 2.9 1.5 1.7 
(color) 
Feel of 2.5 3.0 3.0 1.1 1.6 
application 
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As is evident from the table, the cosmetic compositions of the present 
invention were evaluated to be extremely good or good. 
While the invention has been described in detail and with reference to 
specific embodiments thereof, it is apparent to one skilled in the art 
that various changes and modifications can be made therein without 
departing from the spirit and the scope of the present invention.