Patent ID: 7651562
Filing Date: 2010-01-26
Classification: A61K,A61Q,C01P,C09C,Y10T

Abstract:
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%.