Invention Grant
US07993443B2 Multilayer effect pigment 有权
多层效应颜料

Multilayer effect pigment
Abstract:
A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0.2 and at least one of the layers having an optical thickness which is different from all of the other layers. The resulting multilayer effect pigment is not a quarter-wave stack.The present multilayer effect pigment may be used in cosmetics or personal care products.
Public/Granted literature
Information query
Patent Agency Ranking
0/0