Engelhard patents
POWDER COATING PRECURSORS Patent No. U.S. 7,335,695 B2
Engelhard Corporation has received a patent for a powder coating precursor comprised of a pearlescent pigment coated with at least one silane coupling agent; and leveling agent that is present on the outer surface of the silane coated pearlescent pigment wherein the pearlescent pigment is metal oxide coated substrate and wherein the leveling agent is aluminum oxide.