Chromatic glitter

Patent metadata

Field	Value
Publication number	US-12441891-B2
Application number	US-202117315490-A
Country	US
Kind code	B2
Filing date	May 10, 2021
Priority date	Nov 11, 2018
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

High chroma glitter pigments combine large particle interference pigments and absorption colorants to bring about a unique look. Unlike traditional glitter pigments, the high chroma glitter pigment does not exploit metallic coatings to achieve the sparkle effect. These high chroma glitter pigments produce optical effects and coloration without the need for incorporating additional pigments which, in turn, is a benefit from both a formulation and cost standpoint. In addition to a sparkle effect, the present invention provides high chroma over both dark and light backgrounds, which has been thus far unrealized in prior art. Materials used in the present invention are ethically sourced, environmentally friendly, free of plastic, free of heavy metals, and regulated for cosmetic applications.

First claim

What is claimed is:

1. A high chroma glitter pigment comprising an ultra large flaky substrate, one or more absorption pigments or dyes, and an optional adhesion layer, wherein the ultra large flaky substrate comprises a large particle pearlescent pigment comprising a transparent, non-metallic, platelet-shaped substrate, selected from the group consisting of natural mica, synthetic mica, bismuth oxychloride, graphite, aluminum oxide, micaceous iron oxide, perlite, silicon dioxide, titanium dioxide-coated mica and iron oxide-coated mica, having a median diameter (50) from 1 μm to 500 μm, and is coated with one or more layers of metal oxides, each having its own refractive index, and wherein the ultra large flaky substrate has a median particle size, d50, at the largest dimension of greater than 500 μm, and a median thickness or height in the range of 0.1 μm-500 μm.

2. A composition comprising the high chroma glitter pigment of claim 1 , wherein:
a. the composition is a cosmetic, personal care product, coating, ink, plastic, paint, crafting product or powder coating; or
b. the composition is an ink or coating is selected from the group consisting of flexographic, screen, paste, sheetfed, gravure, inkjet, energy curable, solvent borne, waterborne, and heat set curable inks and coatings, optionally wherein and wherein the ink or coating comprises a coating resin selected from the group consisting of epoxy, polyester, polyurethane, polyvinyl, cellulose, polyamide, nitrocellulose, acrylic, alkyd, fluorinated resins, and blends thereof; or
c. a crafting product selected from the group consisting of a glue, tape, modeling clays, clay, polymer clay, crayons, colored pens and pencils, ink pads, stamps, slimes, sticky-back sheets, markers, finger paints, water colors, oil paint, oil pastels, colored chalk, tempera stick, tempera paint, acrylic paint, water-based paints, and textiles;

and wherein the glitter pigment is present in an amount of about 0.01%-50%, with respect to the total weight of the formulation.

3. The composition of claim 2 , wherein the glitter pigment is present in an amount of about 0.01%-20%.

4. The composition of claim 2 , further comprising one or more additional light diffusing particles or colored pigments, wherein the light diffusing particle is selected from the group consisting of platelet-shaped boron nitride, flaky alumina, spherical alumina, spherical silica, pearlescent pigments, nylon-12, polyethylene, polymethylmethacrylate, polystyrene, silicone crosspolymer particles, titanium dioxide, titanium dioxide-coated talc, zinc oxide and/or mixtures thereof.

5. The composition of claim 2 , further comprising one or more platelet shaped metallic pigments having a diameter from about d50=1-150 μm, wherein the platelet shaped metallic pigment is selected from the group consisting of aluminum, copper, iron, stainless steel, zinc, silver, titanium, gold, magnesium, zinc-copper alloys, zinc-aluminum alloys, zinc-magnesium alloys, silver-plated glass flakes, and mixtures and alloys thereof.

6. A high chroma glitter pigment comprising an ultra large flaky substrate, one or more absorption pigments or dyes, and an optional adhesion layer, wherein the ultra large flaky substrate comprises a pearlescent pigment and wherein the ultra large flaky substrate has a median particle size, d50, at the largest dimension in the range of 200 μm to 5000 μm, and the median thickness or height in the range of 0.1 μm-500 μm; also comprising a transparent, non-metallic, platelet-shaped substrate having a median diameter (d50) from 200-5000 μm, and a thickness from 5 nm to 1 μm, coated with one or more layers of metal oxides, each having its own refractive index, wherein the coating material has a thickness from about 7 nm to 350 nm, and wherein loading of the absorption pigment or dye is from about 0.1% to 10%, with respect to total weight of the pigment.

7. A high chroma glitter pigment comprising an ultra large flaky substrate, one or more absorption pigments or dyes, and an optional adhesion layer, wherein the ultra large flaky substrate has a median particle size, d50, at the largest dimension in the range of 200 μm to 5000 μm, and the median thickness or height of the pigments in the range of 0.1 μm-500 μm and comprises a transparent, non-metallic, platelet-shaped substrate selected from the group consisting of natural mica, synthetic mica, bismuth oxychloride, graphite, aluminum oxide, micaceous iron oxide, perlite, silicon dioxide, titanium dioxide-coated mica and iron oxide-coated mica, and said platelet-shaped substrate having a median diameter (d50) from 200-5000 μm, and a thickness from about 5 nm to 1 μm, and is coated with one or more layers of metal oxides, each having its own refractive index, wherein loading of the absorption pigment or dye is from about 0.1% to 10%, with respect to total weight of the pigment.

8. A high chroma glitter pigment comprising an ultra large flaky platelet-shaped substrate coated with a coating material having one or more layers of metal oxide or a metal, with an aspect ratio from about 6-1000, having one or more absorption pigments or dyes, and an optional adhesion layer, wherein the ultra large flaky substrate comprises a transparent, non-metallic, platelet-shaped substrate selected from the group consisting of natural mica, synthetic mica, bismuth oxychloride, graphite, aluminum oxide, micaceous iron oxide, perlite, silicon dioxide, titanium dioxide-coated mica and iron oxide-coated mica, and said platelet-shaped substrate having a median diameter (d50) from 1 μm-500 μm, and a thickness from about 5 nm to 1 μm, and is coated with one or more layers of metal oxides, each having its own refractive index, wherein loading of the absorption pigment or dye is from about 0.1% to 10%, with respect to total weight of the pigment; wherein the optional adhesion layer includes molecules that contain two or more functional groups selected from the group consisting of silanes, carboxylic acids, phosphoric acids, phosphonic acids, wherein the coating material is selected from the group consisting of tin oxide, titanium dioxide, silicon dioxide, aluminum oxide, aluminum hydroxide, hydrated iron oxide, a-iron oxide, y-iron oxide, magnetite, zirconium dioxide, cerium oxide, vanadium oxide, manganese oxide, chromium oxide, silver oxide, tungsten oxide, silver, gold, aluminum, and mixtures and alloys thereof.

9. A high chroma glitter pigment comprising an ultra large flaky platelet-shaped substrate coated with a coating material having one or more layers of metal oxide or a metal having a thickness from about 7 nm to 350 nm, with an aspect ratio from about 6-1000, having one or more absorption pigments or dyes, and an optional adhesion layer, wherein the ultra large flaky substrate comprises a transparent, non-metallic, platelet-shaped substrate selected from the group consisting of natural mica, synthetic mica, bismuth oxychloride, graphite, aluminum oxide, micaceous iron oxide, perlite, silicon dioxide, titanium dioxide-coated mica and iron oxide-coated mica, having a thickness from 5 nm to 1 μm, that is coated with one or more layers of metal oxides, each having its own refractive index, and a median thickness or height in the range of 0.1 μm-500 μm, wherein loading of the absorption pigment or dye is from about 0.1% to 10%, with respect to total weight of the pigment, and said platelet-shaped substrate having a median diameter (d50) from 1 μm-500 μm; wherein the optional adhesion layer includes molecules that contain two or more functional groups selected from the group consisting of silanes, carboxylic acids, phosphoric acids, phosphonic acids, wherein the coating material is selected from the group consisting of tin oxide, titanium dioxi

Assignees

• Sun Chemical Corp

Inventors

• Bennett Jami Rae
• Doll Jonathan Daniel

Classifications

• C09C1/0063

  consisting of at least one dye · CPC title

• C09C1/0036 Primary

  consisting of at least one dye · CPC title

• C09C2200/301

  Thickness of the core · CPC title

• A61Q1/04

  for lips · CPC title

• A61K2800/436

  Interference pigments, e.g. Iridescent, Pearlescent · CPC title