| 摘要 |
Multilayer pearl lustre pigment on the basis of a platelet-shaped substrate comprising a material of low refractive index in the range from 1.35 to 1.8, which comprises at least(i) one first layer comprising a material having a refractive index of more than 1.8,(ii) optionally, a second layer comprising a material of low refractive index in the range from 1.35 to 1.8,(iii) a semitransparent metal layer which is applied to the substrate or to the layers (i) or (ii), and(iv) if desired, an aftercoating, the substrate being platelet-shaped silicon dioxide, aluminium oxide, boron oxide or magnesium fluoride.
|
