Cosmetic
A technology of cosmetic composition and oxide, applied in the direction of cosmetics, cosmetics, cosmetic preparations, etc., can solve the problems of insufficient brightness, low reflectivity of powder, and deterioration of chromaticity of cosmetic compositions, etc., and achieve brightness improvement and high chromaticity Effect
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Embodiment 1 to 8 and comparative example 1 to 5
[0082]
[0083] Various types of composite powders described in Table 1 were prepared according to the following methods.
[0084] Among metal oxide flakes, glass flakes are prepared by known methods described in, for example, JP-A No. 7-315859 and Japanese Patent No. 3723571.
[0085] Specifically, 5400 g of tetramethoxysilane as a glass precursor and 1000 g of 0.1N hydrochloric acid were dissolved in a 1:1 mixed solvent of ethanol and 2-propanol to obtain a predetermined concentration. Then, the liquid was stirred at 35° C. for 72 hours to prepare a coating liquid. Using pull-out coating, under strict thickness control, the coating solution is coated on a stainless steel support with a smooth surface at a pull-out speed of 30 cm / min to 50 cm / min, and then dried at 200°C. Then, the coating layer was separated from the support, and the collected flakes were sintered at 1000° C., and further pulverized and classified, resulting in tabular powders (metal oxides) with the desi...
Embodiment 9 to 16 and comparative example 6 to 11
[0110] The respective components of Phase A, Phase B, and Phase C described below were weighed, respectively. Table 1 shows the types of composite powders used in Phase A. Phase B was added to the vessel of the homomixer, and phase A was gradually added thereto while stirring. The vessel was then heated to 80°C and stirred until all ingredients of Phase B had melted. In addition, the container in which the phase C was added was also heated to 80° C., and stirred until all the components were dissolved. Then, the temperature of the mixture of phases B and A and the temperature of the aqueous solution of phase C are both lowered to 50° C., and phase C is gradually added to phase B while stirring with a homomixer, and stirring is performed until the Fully emulsified. As a result, the liquid foundations of Examples 9 to 16 respectively containing the same composite powders as those of Examples 1 to 8, and the comparisons of the liquid foundations respectively containing the sam...
Embodiment 17
[0117] Face flour was prepared in the same manner as in Examples 1 to 8, respectively, except that the proportion of Phase B was reduced to 1 / 3 compared with the powder cakes of Examples 1 to 8. at 0.06g·cm -3 The obtained face powder was uniformly applied to the surface on which the liquid foundation base formulation of Comparative Example 11 had been applied to obtain a sample, and evaluated in the same manner as in Examples 1 to 8 these samples.
[0118] Similar to the pressed powders of Examples 1 to 8, the face powder obtained exhibited excellent lightness and excellent chroma.
[0119] As described above, according to the present invention, a good cosmetic composition, such as a foundation or face powder, having excellent lightness and excellent chroma can be obtained.
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Abstract
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