Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
1999-11-01
2001-10-23
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S063000, C424S064000, C424S069000, C514S937000
Reexamination Certificate
active
06306409
ABSTRACT:
RELATED APPLICATIONS
This application claims the priority of Japanese Patent Application No. 10-312308 filed on Nov. 2, 1998, which is incorporated herein by reference.
FIELD OF THE INVENTION
The present invention relates to a makeup cosmetic preparation having photochromic property and, in particular, to an improvement of a makeup cosmetic preparation which changes its color to natural observation color in response to intensity of surrounding light.
BACKGROUND OF THE INVENTION
“Aesthetic function” to show more beautifully, “sensuous function” to give comfortableness, “functionality” such as cosmetic durability and prevention of secondary adhesion, and so on are listed as basic function required to the makeup cosmetic preparation.
The feel of material in case of applying the makeup cosmetic preparation to the face has been generally adjusted by compounding various glossy pigments such as the titanium oxide coated mica pigments in order to achieve aesthetic function. Such titanium oxide coated mica pigments that titanium dioxide layer is formed on the surface of fine flaky mica, have iridescent luster and various interference colors, as described in Cosmetic Ingredients Standard. It is generally manufactured by hydrolyzing inorganic salt solution of titanium such as titanyl sulfate, depositing hydrous titanium dioxide on the surface of mica, and heating it. The interference colors of thus generated titanium oxide coated mica pigments show various colors in accordance with thickness of titanium dioxide coated layer on the surface of mica. However, any object colors thereof are nearly white.
Thereupon, some methods for giving various object colors in the titanium oxide coated mica pigments have been considered. The most general method is to add coloring pigments such as iron oxide, ultramarine blue, chromium oxide, carbon black and carmine on the surface of the generated titanium oxide coated mica pigments. However, this method is defective in decreasing transparency of titanium oxide coated mica. As compared with this, the colored titanium oxide coated mica pigments, which does not spoil transparency of titanium oxide coated mica by doping various metals or metal compounds on mica in titanium oxide coated mica, have been developed.
On the contrary, various functions are recently required to the pigments. As one of such pigments, the pigments having the so-called photochromic property (or phototropic property) are beginning to attract. As the products applying photochromic property, light-modulating glass and color-changeable makeup cosmetic preparation have been developed.
Only single interference color, however, is obtained in the conventional titanium oxide coated mica pigments. Also, when the titanium oxide coated mica pigments are compounded to a foundation, it become nearly white as a whole under sunlight where intensity of light is strong, while it become dark with yellow as a whole in the room where intensity of light is weak. Therefore, it is highly desired to develop the pigment, which has natural color-rendering property in response to intensity of light. The present inventors have studied diligently in order to meet these expectations. Color tones of titanium oxide which is comprised in titanium oxide coated mica are changed in response to intensity of light by giving photochromic property to titanium oxide in titanium oxide coated mica. The present inventors have found that this working emphasizes the interference color that is generated on titanium oxide coated mica and the pigments can function as extremely useful pearl pigment whose observation color is changeable. Thus, the present inventors have developed the titanium oxide coated mica pigment that the observation color changes in response to light and have suggested the pigment in Unexamined Japanese Patent Publication No. Hei 9-165532.
Cosmetic preparations having light-responding color-rendering effect, which respond to intensity of surrounding light have not been developed yet.
SUMMARY OF THE INVENTION
In view of the foregoing problem in the prior art, an object of the present invention is to provide a makeup cosmetic preparation having natural color-rendering property in response to intensity of surrounding light.
A light-responding high color-rendering makeup cosmetic preparation in accordance with the present invention for attaining the above-mentioned objects, is a makeup cosmetic preparation comprising a photochromic titanium oxide coated mica, wherein said photochromic titanium oxide coated mica is an observation color changeable type photochromic titanium oxide coated mica wherein titanium oxide or titanium oxide compound, which has photochromic property to darken in response to intensity of irradiated ultraviolet ray, is coated on a surface of mica and wherein metal or metal compound exists on a surface and/or inside of said photochromic titanium oxide coated mica and color of said metal or metal compound is observed as an object color and wherein an observation color of said photochromic titanium oxide coated mica is changed by emphasizing an interference color generated by darkening of titanium oxide layer, which is made of titanium oxide or titanium oxide compound in response to irradiation of ultraviolet ray, and wherein at least one of color tone in the cosmetic preparation is given by an observation color of said observation color changeable type photochromic titanium oxide coated mica.
In the present invention, it is preferable that layer thickness of titanium oxide layer, which is comprised in the titanium oxide coated mica in said observation color changeable type photochromic titanium oxide coated mica, is adjusted in order that color tone of the interference color that is generated by titanium oxide layer may shows different color with the object color.
It is also preferable that layer thickness of titanium oxide layer, which is compounded in titanium oxide coated mica of said observation color changeable type photochromic titanium oxide coated mica, is adjusted in order that color tone of the interference color that is generated by titanium oxide layer may shows a complementary color or color gamut in the vicinity of the complementary color of the object color.
It is also preferable that said observation color changeable type photochromic titanium oxide coated mica is a photochromic titanium oxide coated mica that reflectance of the light around long wavelength range of visible rays decreases in a light place and increases in a dark place.
It is also preferable that said observation color changeable type photochromic titanium oxide coated mica comprises iron oxide or a compound which is mainly composed of iron oxide.
It is also preferable that a percentage of titanium oxide which is compounded in titanium oxide coated mica of said observation color changeable type photochromic titanium oxide coated mica is 47 to 57%.
It is also preferable that said observation color changeable type photochromic titanium oxide coated mica is calcinated at 850 to 950° C.
It is also preferable that an amount of said observation color changeable type photochromic titanium oxide coated mica is 0.1 to 30 wt %.
It is also preferable that 1 to 30 wt % of a photochromic titanium oxide, which only changes the object color or lightness with light, is compounded in the makeup cosmetic preparation together with said observation color changeable type photochromic titanium oxide coated mica.
REFERENCES:
patent: 5690916 (1997-11-01), Kimura et al.
patent: 0 887 067 A2 (1998-12-01), None
patent: 05051209 A (1993-03-01), None
patent: 06345433 A (1994-12-01), None
patent: 07258580 A (1995-10-01), None
patent: 09165532 A (1997-06-01), None
patent: 09165532 (1997-06-01), None
Database Chemical Abstracts Online, abstract 123:349 867, XP002129533—Japanese Patent No. 07 223816, Aug. 25, 1995.
Database Chemical Abstracts Online, abstract 124:126 209, XP002129554—Japanese Patent No. 07 258580, Oct. 09, 1995.
Database Chemical Abstracts Online, abstract 127:137 134, XP002129555—Japanese Patent No. 09 165532, Jun. 24, 1997.
Datab
Aso Daisuke
Ogawa Katsuki
Ohno Kazuhisa
Sakurai Osamu
Howard S.
Page Thurman K.
Shiseido Co. Ltd.
Snider Ronald R.
Snider & Associates
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