Granted Patent B2

US 12,187,900 · App. 15/194,298 · Granted Jan 7, 2025

Inventors: Johannes Seydel (Petaluma, CA); Paul Thomas Kohlmann (Windsor, CA); Mark Tevis (Novato, CA); Jeffrey James Kuna (San Francisco, CA)

Assignee: VIAVI SOLUTIONS INC.

C09C1/0015B42D25/29B42D25/328B42D25/369B42D25/373B42D25/445C09C1/0033C09C1/006C23C4/06C01P2006/42C09C2200/1008C09C2200/24C09C2200/305C09C2200/306C09C2200/505C09C2220/10

Abstract

Claims (25)

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.

2. The article of claim 1 , further comprising a substrate, wherein the second metallic layer is deposited on the substrate.

3. The article of claim 1 , wherein the second metallic layer comprises a pattern.

4. The article of claim 1 , wherein the first dielectric layer and the second dielectric layer have a refractive index of from about 1.2 to about 2.6.

5. The article of claim 1 , wherein the ingredients of the first composition and the ingredients of the second composition each comprise a second phosphineoxide.

6. The article of claim 5 ,

wherein the phosphineoxide includes diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide and the second phosphineoxide is bis(2,4,6-trimethylbenzoyl)-phenylphosphineoxide, and further wherein the defoamer includes a silicone free liquid organic polymer.

7. The article of claim 1 , wherein the first metallic layer is a reflector layer, the second metallic layer is an absorber layer, the third metallic layer is a reflector layer and the fourth metallic layer is an absorber layer.

8. The article of claim 1 , wherein the ingredients of the first composition and the ingredients of the second composition each further include a sensitizer.

9. The article of claim 1 , wherein the magnet containing layer comprises a magnetic material selected from a ferromagnetic material or ferrimagnetic material.

10. The article of claim 1 , wherein the nanosized particles include are selected from metalorganic compounds, ZrO 2 , In 2 O 3 , In 2 O 3 —SnO, SnO, metal sulfides, chalcogenides, quantum dots, fluorides, carbonates, or mixtures thereof.

11. A color shifting colorant comprising:

the article of claim 1 and a liquid medium.

Assignments (4)

Continuity (1)

References Cited (257)

Cited By (1)

US 12,552,939