US 12,187,900 B2
High chromaticity pigment flakes and foils
Johannes Seydel, Petaluma, CA (US); Paul Thomas Kohlmann, Windsor, CA (US); Mark Tevis, Novato, CA (US); and Jeffrey James Kuna, San Francisco, CA (US)
Assigned to VIAVI SOLUTIONS INC., Chandler, AZ (US)
Filed by VIAVI SOLUTIONS INC., Milpitas, CA (US)
Filed on Jun. 27, 2016, as Appl. No. 15/194,298.
Prior Publication US 2017/0368866 A1, Dec. 28, 2017
Int. Cl. C09C 1/00 (2006.01); B42D 25/29 (2014.01); B42D 25/328 (2014.01); B42D 25/369 (2014.01); B42D 25/373 (2014.01); B42D 25/445 (2014.01); C23C 4/06 (2016.01)
CPC C09C 1/0015 (2013.01) [B42D 25/29 (2014.10); B42D 25/328 (2014.10); B42D 25/369 (2014.10); B42D 25/373 (2014.10); B42D 25/445 (2014.10); C09C 1/0033 (2013.01); C09C 1/006 (2013.01); C23C 4/06 (2013.01); C01P 2006/42 (2013.01); C09C 2200/1008 (2013.01); C09C 2200/24 (2013.01); C09C 2200/305 (2013.01); C09C 2200/306 (2013.01); C09C 2200/505 (2013.01); C09C 2220/10 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An article comprising:
a magnet containing layer including a first major surface and a second major surface;
a first metallic layer on the first major surface of the magnet containing layer;
a first dielectric layer on the first metallic layer;
a second metallic layer on the first dielectric layer;
a third metallic layer on the second major surface of the magnet containing layer;
a second dielectric layer on the third metallic layer; and
a fourth metallic layer on the second dielectric layer;
wherein the first dielectric layer has a first composition and the second dielectric layer has a second composition, the first composition and the second composition each made from ingredients that include a mercapto modified polyester acrylate, an amine modified polyether tetraacrylate, at least one phosphineoxide, 1,6-hexanediol diacrylate, a leveling agent, a defoamer and a plurality of nanosized particles, the first composition and the second composition being the same or different;
wherein the first metallic layer and the third metallic layer each consists essentially of a reflective material independently selected from aluminum, copper, silver, gold, platinum, palladium, nickel, cobalt, niobium, chromium, combinations thereof, or alloys thereof;
wherein the article is a pigment flake;
wherein the first dielectric layer and the second dielectric layer each have an optical thickness ranging from about 1 nm to about 700 nm; and
wherein the first dielectric layer and the second dielectric layer each have an optical thickness variation of 3% or less across the layer.