A mixture of magnetically orientable color shifting flakes...

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 5/29 (2006.01) B41M 1/22 (2006.01) B41M 3/06 (2006.01) B41M 3/14 (2006.01) B44F 1/04 (2006.01) B44F 1/12 (2006.01) C09D 5/23 (2006.01) C09D 11/02 (2006.01)

Patent

CA 2721667

Pigment flakes are blended together wherein some are magnetically alignable and exhibit a color shift from a first color to a second color with a change in viewing angle; and some are pigment flakes which exhibit a color shift from the first color to a third color or vice versa with a change in viewing angle, wherein the first, second and third colors are three different colors. The flakes are coated upon a substrate and magnetically alignable flakes are magnetically aligned. The non-magnetically alignable flakes are not aligned by the magnetic field and lie flat upon the substrate they are coated on. By judiciously selecting the angle upon which the magnetic flakes are oriented, an effect is created whereby an observer sees a color shift from a first color to a second or a first color to a third, when orienting the substrate by tilting it at different particular angles. The coated substrate can be used in security applications such as on currency or secure instruments.

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