High chromaticity pigment flakes and foils

Patent metadata

Field	Value
Publication number	US-12187900-B2
Application number	US-201615194298-A
Country	US
Kind code	B2
Filing date	Jun 27, 2016
Priority date	Jun 27, 2016
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

An article including at least one first metallic layer, at least one dielectric layer, and at least one second metallic layer is disclosed. The at least one dielectric layer can include at least one of (i) a photo-initiator, (ii) an oxygen inhibition mitigation composition, (iii) a leveling agent, and (iv) a defoamer. The article can be in the form of a foil or pigment flake, and can also include a magnet containing layer.

First claim

We claim:

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.

Assignees

• Viavi Solutions Inc

Inventors

• Seydel Johannes
• Kohlmann Paul Thomas
• Tevis Mark
• Kuna Jeffrey James

Classifications

• C09C2200/505

  Inorganic particles, e.g. oxides, nitrides or carbides · CPC title

• C09C2200/305

  Thickness of intermediate layers within the stack · CPC title

• C09C2200/24

  Interference pigments comprising a metallic reflector or absorber layer, which is not adjacent to the core · CPC title

• C09C1/006

  consisting of a metal or an alloy · CPC title

• C09C1/0033

  consisting of a metal or an alloy · CPC title