SURFACE-MODIFIED PEARL PIGMENT
AND PROCESS FOR PRODUCING THE
Patent No. U.S. 6,858,072 B1
Merck Patent GmbH has received a
patent for a surface-modified pearl
pigment, wherein a hydrated metal
oxide is covered on the surface of a
pearl pigment, and fine polymer particles,
chemically bonded to a hydrated
metal oxide-coated pearl pigment
without being mutually aggregated,
are adhered to the surface of the outmost
layer of the hydrated metal
oxide-coated pearl pigment