Pigment and pigmented cosmetic preparation as well as method for production of the pigment
In a metal pigment for a cosmetic preparation, such as lipstick, nail polish, eye shadow, hair colorant, liquid mascara, powder, eyeliner, rouge, skin/hair care products, perfume, eau de toilette, lotions or the like, provision is made for a metallic substrate to have a substrate-enclosing layer produced by the sol-gel process, which provides a barrier effect against sweat and saliva and prevents direct contact between skin and metallic substrate.
1. A metal pigment for a cosmetic preparation, such as lipstick, nail polish, eye shadow, hair colorant, liquid mascara, powder, eyeliner, rouge, skin/hair care products, perfume, eau de toilette, lotions, characterized
in that a metallic substrate has a substrate-enclosing single layer thereover produced by the sol-gel process, which provides a barrier effect against sweat and saliva and prevents direct contact between skin and metallic substrate; and
consists of silicon oxide, aluminum oxide, iron oxide, ceroxide, chromium oxide, corresponding hydrates, or mixtures thereof;
said layer having a thickness of between 20 and 50 nm;
said single layer being the only layer over said metallic substrate;
wherein the metallic substrate consists of aluminum, exclusive of impurities, 100% of the grain size is <75 μm and 95% is <45 μm and the content of mercury is <=1 ppm, of arsenic <=3 ppm, of lead <=20 ppm, and the Al content is >=99%.
2. A metal pigment according to claim 1 , characterized in that the layer is compatible with a binding agent or carrier of the cosmetic preparation.
3. A pigment according to claim 1 , wherein the content of mercury is <=1 ppm, of arsenic <=3 ppm, of lead <=10 ppm, of cadmium <=1 ppm, of heavy metals (as lead) <=40 ppm, the drying loss at 105° C. is <=0.5%, and the Al content is >=99%.
4. A metal pigment in the form of a bronze pigment, for a cosmetic preparation, such as lipstick, nail polish, eye shadow, hair colorant, liquid mascara, powder, eyeliner, rouge, skin/hair care products, perfume, eau de toilette, lotions, characterized in that
a metallic substrate or core has a single substrate-enclosing layer thereover, produced by the sol-gel process, which provides a baffler effect against sweat and saliva and prevents direct contact between skin and the metallic substrate; and
consists of silicon oxide, aluminum oxide, iron oxide, ceroxide, chromium oxide, corresponding hydrates, or mixtures thereof;
said layer having a thickness of between 20 and 50 nm;
said layer being the only layer over said metallic substrate;
wherein the metallic core contains a content of copper of 70 to 95%, a content of zinc <=30% and a content of aluminum and tin of<=0.5% in each case, and the content of cadmium is <=15 ppm, of lead <=20 ppm, of arsenic <=3 ppm and of mercury <=1 ppm, and 95% of the grain size is <45 μm.
5. A metal pigment, for a cosmetic preparation, such as lipstick, nail polish, eye shadow, hair colorant, liquid mascara, powder, eyeliner, rouge, skin/hair care products, perfume, eau de toilette, lotions, characterized in that
a metallic substrate or core has a single substrate-enclosing layer thereover, produced by the sol-gel process, which provides a barrier effect against sweat and saliva and prevents direct contact between skin and the metallic substrate; and
consists of silicon oxide, aluminum oxide, iron oxide, ceroxide, chromium oxide, corresponding hydrates, or mixtures thereof;
said layer having a thickness of between 20 and 50 nm;
said layer being the only layer over said metallic substrate;
wherein the metallic core consists of silver exclusive of impurities, the content of mercury is <=1 ppm, of arsenic <=5 ppm, of lead <=10 ppm, and the content of silver is >=99.5%.
6. A pigment according to claim 5 , wherein the content of silver in the core is >=99.9%.
7. A metal pigment, for a cosmetic preparation, such as lipstick, nail polish, eye shadow, hair colorant, liquid mascara, powder, eyeliner, rouge, skin/hair care products, perfume, eau de toilette, lotions, characterized in that
a metallic substrate or core has a single substrate-enclosing layer thereover, produced by the sol-gel process, which provides a barrier effect against sweat and saliva and prevents direct contact between skin and the metallic substrate; and
consists of silicon oxide, aluminum oxide, iron oxide, ceroxide, chromium oxide, corresponding hydrates, or mixtures thereof;
said layer having a thickness of between 20 and 50 nm;
said layer being the only layer over said metallic substrate;
wherein the metallic core consists of, exclusive of incidental impurities, >=90% gold, <=7% silver, and <=4% copper.
8. A pigment according to claim 1 , characterized in that the weight ratio of the layer to the metallic core is between 1 and 0.001.
9. A pigment according to claim 1 , characterized in that the metallic substrate is a metal pigment produced through grinding with lubricants of plant origin.
10. A pigment according to claim 1 , characterized in that the metallic core is formed flake-like with a diameter of 1 to 100 μm and a mean thickness of 0.05 to 2 μm.
11. A method for producing a pigment according to claim 1 , characterized in that the metallic substrate particles are coated without additional pretreatment in a sol-gel process in alcoholic-aqueous solution through hydrolysis and vapor depositing of organic metal oxide pre-stages and optionally with the use of suitable catalysts.
12. A cosmetic preparation containing a pigment according to claim 1 .
13. A method for producing a pigment according to claim 4 , characterized in that the metallic substrate particles are coated without additional pretreatment in a sol-gel process in alcoholic-aqueous solution through hydrolysis and vapor depositing of organic metal oxide pre-stages and optionally with the use of suitable catalysts.
14. A cosmetic preparation containing a pigment according to claim 4 .
15. A method for producing a pigment according to claim 5 , characterized in that the metallic substrate particles are coated without additional pretreatment in a sol-gel process in alcoholic-aqueous solution through hydrolysis and vapor depositing of organic metal oxide pre-stages and optionally with the use of suitable catalysts.
16. A cosmetic preparation containing a pigment according to claim 5 .
17. A method for producing a pigment according to claim 7 , characterized in that the metallic substrate particles are coated without additional pretreatment in a sol-gel process in alcoholic-aqueous solution through hydrolysis and vapor depositing of organic metal oxide pre-stages and optionally with the use of suitable catalysts.
18. A cosmetic preparation containing a pigment according to claim 7 .