# US 2025/0382467 A1 · Composition including a color shifting pigment having a different particle size > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0382467 A1 - Document ID: US20250382467A1 - Status: Published application - Kind: A1 - Application number: 19/249,419 - Filed: 2025-06-25 - Published: 2025-12-18 - Earliest claimed: 2019-11-29 - Assignees: Viavi Solutions Inc. - Applicants: Viavi Solutions Inc. - Inventors: Cornelis Jan DELST; Matthew Ryan WITZMAN; Bryan James CLIFTON; Paul Thomas KOHLMANN - Web page: https://patentgrep.com/patent/US20250382467A1 ## CPC - C09C 1/0078: {Pigments consisting of flaky, non-metallic substrates, characterised by a surface-region containing free metal} - C09C 1/0015: {Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings} - C09C 1/0081: {Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound (C09C1/0015, C09C1/0078 take precedence)} - C09D 5/36: Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre - C09D 7/20: Diluents or solvents - C09D 7/62: modified by treatment with other compounds - C09D 7/69: {Particle size larger than 1000 nm} - C09D 7/70: {characterised by shape, e.g. fibres, flakes or microspheres} - C09D 11/033: characterised by the solvent - C09D 11/037: characterised by the pigment - C09D 17/001: {in aqueous medium (C09D17/003, C09D17/004 take precedence)} - C09D 17/002: {in organic medium (C09D17/003, C09D17/004 take precedence)} - C09D 17/004: {containing an inorganic pigment} - C09D 17/006: {Metal} - C01P 2004/20: extending in two dimensions, e.g. plate-like - C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer - C01P 2006/60: Optical properties, e.g. expressed in CIELAB-values - C01P 2006/63: a* (red-green axis) - C01P 2006/64: b* (yellow-blue axis) - C09C 2200/1054: the core consisting of a metal - C09C 2200/30: Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle - C09C 2200/304: Thickness of intermediate layers adjacent to the core, e.g. metallic layers, protective layers, rutilisation enhancing layers or reflective layers - C09C 2200/305: Thickness of intermediate layers within the stack - C09C 2200/306: Thickness of an absorbing layer - C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS} - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS ## 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. ## Claims ### Claim at position 1 1-16. (canceled) ### Claim 17 A method of making an article, comprising: coating a first area of a substrate with a first color shifting pigment flake population having a first D50 particle size; and coating a second area adjacent to the first area of the substrate with a second color shifting pigment flake population having a second D50 particle size that is different from the first D50 particle size; 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. ### Claim 18 (depends on 17) The method of claim 17, wherein the second D50 particle size is larger than the first D50 particle size. ### Claim 19 (depends on 17) The method of claim 17, 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. ### Claim 20 (depends on 17) The method of claim 17, wherein the first optical thickness is 4 QWOT, the second optical thickness is 2 QWOT and the pigments of the second color shifting pigment flake population have a dual cavity. ### Claim 21 (depends on 17) The method of claim 17, wherein a hue of the face color of each of the first pigment flake population and the second pigment flake population is within 30 degrees. ### Claim 22 (depends on 17) The method of claim 17, wherein a hue angle of the face color of each of the first pigment flake population and the second pigment flake population is a visual match at normal. ### Claim 23 (depends on 22) The method of claim 22, wherein a hue angle of the face color of each of the first pigment flake population and the second pigment flake population is different at a view angle that is not at normal. ### Claim 24 A method of making an article, comprising: coating a first area of a substrate with a first color shifting pigment flake population having a first D50 particle size; and coating a second area adjacent to the first area of the substrate with a second color shifting pigment flake population having a second D50 particle size that is different from the first D50 particle size. ### Claim 25 (depends on 24) The method of claim 24, wherein the second D50 particle size is larger than the first D50 particle size. ### Claim 26 (depends on 24) The method of claim 24, 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. ### Claim 27 (depends on 24) The method of claim 24, 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. ### Claim 28 (depends on 27) The method of claim 27, wherein the first optical thickness is 4 QWOT, the second optical thickness is 2 QWOT and the pigments of the second color shifting pigment flake population have a dual cavity. ### Claim 30 (depends on 24) The method of claim 24, wherein a hue angle of the face color of each of the first pigment flake population and the second pigment flake population is a visual match at normal and hue angle of each of the first pigment flake population and the second pigment flake population is different at a view angle that is not at normal. Abstract, ### Claim 31 (depends on 24) The article of claim 24, wherein the pigments of the first color shifting flake population and the pigments of the second color shifting pigment flake population have a same or similar optical design. ### Claim 32 An article, comprising: a first area of a substrate coated with a first color shifting pigment flake population having a first D50 particle size; and a second area adjacent to the first area of the substrate, the second area coated with a second color shifting pigment flake population having a second D50 particle size that is different from the first D50 particle size. ### Claim 33 (depends on 32) The article of claim 32, wherein the substrate is paper, foil, plastic, web. ### Claim 34 (depends on 32) The article of claim 32, 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. ### Claim 35 (depends on 32) The article of claim 32, wherein the pigments of the first color shifting flake population and the pigments of the second color shifting pigment flake population have a same or similar optical design. ### Claim 36 (depends on 32) The article of claim 32, wherein a hue angle of the face color of each of the first pigment flake population and the second pigment flake population is a visual match at normal and hue angle of each of the first pigment flake population and the second pigment flake population is different at a view angle that is not at normal. ### Claim 39 (depends on 24) The method of claim 24, wherein a hue of the face color of each of the first pigment flake population and the second pigment flake population is within 30 degrees.