SOLID MULTILAYER MAGNETIC PIGMENTS AND FOIL Russian patent published in 2008 - IPC C09C1/00 C09C1/22 C09C1/62 C09D5/29 

FIELD: chemistry.

SUBSTANCE: invention can be applied in paintwork and other industries. It claims multilayer magnetic pigment flakes and paint compositions containing thereof. Magnetic pigment flakes include central magnetic layer with first base surface, opposite second base surface, and at least one side surface; first insulation layer applied to the first base surface of magnetic layer; second insulation layer applied to the second base surface of magnetic layer; first reflector layer over the first insulation layer; and second reflector layer over the second insulation layer. Effective thickness of the insulation layers capable of preventing corrosion of a pigment flake. Magnetic pigment flakes can also include central magnetic layer; insulation layer practically surrounding the magnetic layer; and reflector layer practically surrounding the insulation layer.

EFFECT: prevention of pigment flake corrosion in aggressive environment and increased magnetic pigment colour saturation and brightness.

2 ex, 1 tbl, 5 dwg