# US 2021/0278026 A1 · Powder coating material, laminate and pipe

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- Number: US 2021/0278026 A1
- Document ID: US20210278026A1
- Status: Published application
- Kind: A1
- Application number: 16/326,477
- Filed: 2017-08-03
- Published: 2021-09-09
- Earliest claimed: 2016-08-26
- Assignees: Daikin Industries, Ltd.
- Applicants: Daikin Industries ,Ltd.
- Inventors: Hirotake IMADA; Yasukazu NAKATANI; Tomohiro SHIROMARU
- Web page: https://patentgrep.com/patent/US20210278026A1

## CPC

- F16L 58/1009: {the coating being placed inside the pipe}
- C09D 5/031: {characterised by particle size or shape}
- C09D 5/033: {characterised by the additives}
- C09D 5/18: Fireproof paints {including high temperature resistant paints}
- C09D 163/00: Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09K 21/12: containing phosphorus
- F16L 58/1054: {the coating being placed outside the pipe}
- F24F 13/02: Ducting arrangements
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- 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)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)

## Abstract

A powder coating material including a main material resin containing an epoxy resin; a phosphorus flame retarder; and at least one inorganic particulate substance selected from metal hydroxides and hydrous metal compounds. The inorganic particulate substance has an average particle size of 0.01 to 9 μm. The inorganic particulate substance is present in an amount of 80 to 200 parts by mass relative to 100 parts by mass of the main material resin.

## Claims

### Claim 1

A powder coating material comprising:
a main material resin containing an epoxy resin;
a phosphorus flame retarder; and
at least one inorganic particulate substance selected from the group consisting of metal hydroxides and hydrous metal compounds,
the inorganic particulate substance having an average particle size of 0.01 to 9 μm,
the inorganic particulate substance being present in an amount of 80 to 200 parts by mass relative to 100 parts by mass of the main material resin.

### Claim 2 (depends on 1)

The powder coating material according to claim 1,
wherein the phosphorus flame retarder is a phosphoric acid ester, and the inorganic particulate substance is at least one selected from the group consisting of aluminum hydroxide and hydrated alumina.

### Claim 3 (depends on 1)

The powder coating material according to claim 1,
wherein the phosphorus flame retarder is present in an amount of 5 to 50 parts by mass relative to 100 parts by mass of the main material resin.

### Claim 4 (depends on 1)

The powder coating material according to claim 1,
wherein the phosphorus flame retarder and the inorganic particulate substance give a mass ratio of 5/95 to 25/75.

### Claim 5 (depends on 1)

A laminate comprising:
a substrate; and
a resin layer containing the powder coating material according to claim 1.

### Claim 6 (depends on 5)

The laminate according to claim 5,
wherein the resin layer has a thickness of at least 50 μm.

### Claim 7 (depends on 5)

The laminate according to claim 5,
wherein the substrate is a stainless steel substrate.

### Claim 8 (depends on 5)

The laminate according to claim 5,
wherein the laminate is intended to be used such that the resin layer is brought into contact with a corrosive fluid.

### Claim 9 (depends on 5)

The laminate according to claim 5,
wherein the laminate is intended to be used in a building equipped with a semiconductor manufacturing apparatus, a flat panel display manufacturing apparatus, or a solar cell manufacturing apparatus.

### Claim 10 (depends on 1)

A pipe comprising:
an outer layer; and
an inner layer containing the powder coating material according to claim 1.

### Claim 11 (depends on 10)

The pipe according to claim 10,
wherein the inner layer has a thickness of at least 50 μm.

### Claim 12 (depends on 10)

The pipe according to claim 10,
wherein the outer layer is a stainless steel tubular part.

### Claim 13 (depends on 10)

The pipe according to claim 10,
wherein the pipe is intended to convey a corrosive fluid.

### Claim 14 (depends on 10)

The pipe according to claim 10,
wherein the pipe is installed in a building equipped with a semiconductor manufacturing apparatus, a flat panel display manufacturing apparatus, or a solar cell manufacturing apparatus.