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US 12,365,802 B2Granted
Composition including a color shifting pigment having a different particle size
AssigneeViavi Solutions Inc.
InventorsCornelis Jan Delst, Matthew Ryan Witzman, Bryan James Clifton, Paul Thomas Kohlmann
Life of this patent
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Abstract
A composition including a first color shifting pigment flake population having a first D50 particle size; and a second color shifting pigment flake population having a second D50 particle size that is different from the first D50 particle size, wherein the first color shifting pigment flake population and the second color shifting pigment flake population have a similar face color and color shift is disclosed. An article including the composition is included. A method of making the composition and a method of making the article are also disclosed.
Claims16
A composition comprising:
- a first color shifting pigment flake population including pigments having a first D50 particle size;
- and
- a second color shifting pigment flake population including pigments having a second D50 particle size that is larger than the first D50 particle size,
- wherein the first color shifting pigment flake population and the second color shifting pigment flake population are present in the composition in a ratio of from 5:1 to 1:5 by weight;
- wherein the pigments of the first color shifting flake population include a single cavity having a first optical thickness and wherein the pigments of the second color shifting pigment flake population include a dielectric layer having a second optical thickness, wherein the first optical thickness is on average 1.5 times larger than the second optical thickness;
- and
- wherein a hue of a face color at a normal viewing angle of each of the first color shifting pigment flake population and the second color shifting pigment flake population is within about 22 to about 40 degrees, when applied separately.
4 more elements
A method of making a composition comprising:
- selecting a first color shifting pigment flake population including pigments having a first D50 particle size;
- selecting a second color shifting pigment flake population including pigments having a second D50 particle size that is larger than the first D50 particle size;
- and
- adjusting the D50 particle size of at least one of the first color shifting pigment flake population and the second color shifting pigment flake population to match a color shift between the first color shifting pigment flake population and the second color shifting pigment flake population;
- wherein the first color shifting pigment flake population and the second color shifting pigment flake population are present in the composition in a ratio of from 5:1 to 1:5 by weight;
- and
- wherein the pigments of the first color shifting flake population include a single cavity having a first optical thickness and wherein the pigments of the second color shifting pigment flake population include a dielectric layer having a second optical thickness, wherein the first optical thickness is on average 1.5 times larger than the second optical thickness;
- wherein a hue of a face color at a normal viewing angle of each of the first color shifting pigment flake population and the second color shifting pigment flake population is within about 22 to about 40 degrees, when applied separately.
5 more elements
A composition comprising:
- a first color shifting pigment flake population including single cavity pigments having a first D50 particle size;
- and
- a second color shifting pigment flake population including dual cavity pigments having a second D50 particle size that is larger than the first D50 particle size,
- wherein the first color shifting pigment flake population and the second color shifting pigment flake population are present in the composition in a ratio of from 5:1 to 1:5 by weight;
- wherein an optical thickness of the single cavity of the single cavity pigments is 4 QWOT and an optical thickness of a cavity of the dual cavity pigments is 2 QWOT;
- and
- wherein a hue of a face color at a normal viewing angle of each of the first color shifting pigment flake population and the second color shifting pigment flake population is within about 22 to about 40 degrees, when applied separately.
4 more elements
A composition comprising:
- a first color shifting pigment flake population including single cavity pigments having a first D50 particle size;
- and
- a second color shifting pigment flake population including dual cavity pigments having a second D50 particle size that is larger than the first D50 particle size,
- wherein the first color shifting pigment flake population and the second color shifting pigment flake population are present in the composition in a ratio of from 5:1 to 1:5 by weight;
- wherein a first optical thickness of the single cavity of the single cavity pigments is 4 QWOT or 6 QWOT and a second optical thickness of a cavity of the dual cavity pigments is 2 QWOT or 4 QWOT, the first optical thickness being larger than the second optical thickness;
- and
- wherein a hue of a face color at a normal viewing angle of each of the first color shifting pigment flake population and the second color shifting pigment flake population is within about 22 to about 40 degrees, when applied separately.
4 more elements
Dependencies are inferred from the claim text.