US 12,187,901 B2
Composition including reflective particles
Cornelis Jan Delst, Fairfax, CA (US); and Paul Thomas Kohlmann, Windsor, CA (US)
Assigned to VIAVI SOLUTIONS INC., Chandler, AZ (US)
Filed by VIAVI SOLUTIONS INC., San Jose, CA (US)
Filed on Jun. 27, 2019, as Appl. No. 16/455,317.
Claims priority of provisional application 62/692,394, filed on Jun. 29, 2018.
Prior Publication US 2020/0002542 A1, Jan. 2, 2020
Int. Cl. C09C 1/00 (2006.01); C09D 5/33 (2006.01); C09D 11/00 (2014.01); C09D 17/00 (2006.01); H01F 1/28 (2006.01)
CPC C09C 1/0081 (2013.01) [C09D 5/004 (2013.01); C09D 11/00 (2013.01); C09D 17/00 (2013.01); H01F 1/28 (2013.01); C01P 2006/42 (2013.01); C01P 2006/60 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A composition comprising:
magnetic particles having a median particle size ranging from about 10 to about 30 microns, the magnetic particles including a reflector layer, a dielectric layer that is external to the reflector layer, and an absorber layer that is external to the dielectric layer; and
reflective particles having magnetic properties and a median particle size ranging from about 1 micron to 5.5 microns;
wherein the reflective particles have a lightness at least 10 points higher than the lightness of the magnetic particles,
wherein the magnetic particles and the reflective particles are pigments in the form of flakes; and
wherein the reflective particles include a reflector layer, a magnetic layer, and a dielectric layer.