# US 10,246,592 B2 · Powder paint and painted article

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,246,592 B2
- Document ID: US10246592B2
- Status: Granted
- Kind: B2
- Application number: 15/241,234
- Filed: 2016-08-19
- Published: 2016-12-08
- Granted: 2019-04-02
- Earliest claimed: 2014-04-18
- Assignees: AGC Inc.
- Applicants: AGC Inc.
- Inventors: Shun Saito; Masataka Aikawa
- Web page: https://patentgrep.com/patent/US10246592B2

## CPC

- C09D 5/036: {Stabilisers (organic stabilisers for paints C09D7/48)}
- C09D 5/033: {characterised by the additives}
- C09D 7/48: Stabilisers against degradation by oxygen, light or heat
- C09D 123/28: by reaction with halogens or compounds containing halogen (C09D123/32 takes precedence)
- C09D 127/12: containing fluorine atoms
- C09D 167/00: Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain (based on polyester-amides C09D177/12; based on polyester-imides C09D179/08); Coating compositions based on derivatives of such polymers
- C09D 201/00: Coating compositions based on unspecified macromolecular compounds
- C09D 201/04: containing halogen atoms
- C23C 4/12: characterised by the method of spraying
- C23C 4/134: Plasma spraying
- B05D 1/04: involving the use of an electrostatic field {(B05D1/025 and B05D1/14 take precedence)}
- B05D 3/0254: {After-treatment}
- B05D 2202/25: based on Al
- C08K 3/22: of metals
- C08K 5/005: {Stabilisers against oxidation, heat, light, ozone}
- C08K 5/3435: Piperidines
- C08K 2003/2203: {of lithium}
- C08K 2003/2217: {of magnesium}
- C08K 2003/262: {Alkali metal carbonates}
- C08K 2003/267: {Magnesium carbonate}
- 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)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

To provide a powder paint whereby an external defect such as orange-peel skin is less likely to be formed on a formed cured film. The powder paint is characterized by comprising: a fluororesin (A); from 2 to 60 mass ppm relative to the fluororesin (A), of at least one metal element (B) selected from a group comprising potassium, sodium, and magnesium; from 10 to 10,000 mass ppm relative to the fluororesin (A), of a light stabilizer (C); and from 10 to 5,000 mass ppm relative to the fluororesin (A), of a polymerization inhibitor (D).

## Claims

### Claim 1

A powder paint, comprising:
a fluororesin (A),
at least one metal element (B) selected from the group consisting of potassium, sodium and magnesium in an amount of from 2 to 60 mass ppm relative to the fluororesin (A),
a light stabilizer (C) in an amount of from 10 to 10,000 mass ppm relative to the fluororesin (A),
a polymerization inhibitor (D) in an amount of from 100 to 5,000 mass ppm relative to the fluororesin (A), and
free chlorine atoms with a mass ratio of the metal element (B) to the free chlorine atoms of from 1.0 to 10.0.

### Claim 2 (depends on 1)

The powder paint according to claim 1, wherein the fluororesin (A) is at least one member selected from the group consisting of a polyvinylidene fluoride and a copolymer containing units based on a fluoroolefin and units having a reactive group.

### Claim 3 (depends on 1)

The powder paint according to claim 1, wherein the fluororesin (A) is a fluororesin having a glass transition temperature of at least 30° C.

### Claim 4 (depends on 1)

The powder paint according to claim 1, wherein the fluororesin (A) has a number average molecular weight of from 3,000 to 50,000.

### Claim 5 (depends on 1)

The powder paint according to claim 1, wherein an amount of the free chlorine atoms ranges from 0.1 to 30 mass ppm relative to the fluororesin (A).

### Claim 6 (depends on 1)

The powder paint according to claim 1, further comprising:
a non-fluororesin (E) in an amount of from 10 to 400 parts by mass per 100 parts by mass of the fluororesin (A).

### Claim 7 (depends on 1)

The powder paint according to claim 1, wherein the light stabilizer (C) is a hindered amine light stabilizer having a molecular weight of from 300 to 5,000 and a melting point of from 50 to 250° C.

### Claim 8 (depends on 1)

The powder paint according to claim 1, wherein the polymerization inhibitor (D) is a hydroquinone.

### Claim 9 (depends on 6)

The powder paint according to claim 6, wherein the non-fluororesin (E) is an acrylic resin or a polyester resin.

### Claim 10 (depends on 1)

A painted article, comprising:
a cured film of the powder paint according to claim 1 on a substrate surface.

### Claim 11 (depends on 10)

The painted article according to claim 10, wherein the cured film has a thickness of from 100 to 1,000 μm.

### Claim 12 (depends on 10)

The painted article according to claim 10, wherein the cured film has a water content angle of from 1 to 55°.