# US 10,501,643 B2 · Aerosol paint composition and metallic mechanical part coated with same

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- Number: US 10,501,643 B2
- Document ID: US10501643B2
- Status: Granted
- Kind: B2
- Application number: 15/532,490
- Filed: 2015-12-02
- Published: 2017-11-09
- Granted: 2019-12-10
- Earliest claimed: 2014-12-02
- Assignees: NHK Spring Co., Ltd.
- Applicants: Nhk Spring Co., Ltd.; Nhk Spring Production Company
- Inventors: Kenji Minami; Yasutaka Furuta; Yuki Ogami
- Web page: https://patentgrep.com/patent/US10501643B2

## CPC

- C08F 283/02: on to polycarbonates or saturated polyesters {(C08F283/004 takes precedence)}
- B05D 1/02: performed by spraying
- B05D 7/16: using synthetic lacquers or varnishes
- B05D 7/24: for applying particular liquids or other fluent materials
- C08F 285/00: Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
- C08L 51/08: grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
- C09D 1/00: Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D 5/021: {Aerosols (aerosol compositions C09K3/30)}
- C09D 5/08: Anti-corrosive paints
- C09D 7/61: inorganic
- C09D 7/69: {Particle size larger than 1000 nm}
- C09D 151/08: grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C09D 167/08: Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
- C09K 3/30: for aerosols (aerosol containers B65D83/14)
- C08L 2203/16: used for films
- C09D 7/40: Additives
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- 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

## Abstract

Provided are an aerosol coating composition excellent in a matte effect and capable of preventing co-rotation from occurring. The aerosol coating composition contains a modified alkyd resin, inorganic microparticles and an organic solvent. Herein, the modified alkyd resin is a non-aqueous dispersion resin which is a copolymer of a vinyl based monomer and an alkyd resin. The inorganic microparticles are made of one selected from silica, titanium oxide, zinc oxide, alumina, calcium carbonate, talc and clay or the like. The inorganic microparticles have a mean particle diameter of 1.0 to 10.0 μm, and a content of 0.1 to 5 mass %. There is also provided a metallic mechanical part coated with the aerosol coating composition.

## Claims

### Claim 1

An aerosol coating composition comprising a modified alkyd resin, inorganic microparticles and an organic solvent, wherein
the modified alkyd resin includes the organic solvent, a dispersion stabilizer made of a vinyl based polymer soluble in the organic solvent at 20° C. when the dispersion stabilizer has a solid content of 50 mass % and has a viscosity of 300 P or less and an alkyd resin soluble in the organic solvent, or a dispersion stabilizer made of said alkyd resin alone; and dispersion particles made of a vinyl based polymer insoluble in the organic solvent at 20° C. when the vinyl based polymer has a solid content of 50 mass % and a viscosity of 300 P or more;
the inorganic microparticles are made of at least one selected from silica, titanium oxide, zinc oxide, alumina, calcium carbonate, talc and clay;
the inorganic microparticles have a mean particle diameter ranging from 1.0 μm to 10.0 μm; and
the inorganic microparticles have a content ranging from 0.1 mass % to 5 mass %.

### Claim 2 (depends on 1)

The aerosol coating composition of claim 1, wherein the alkyd resin is prepared by esterifying at least one selected from a drying oil, a semi-drying oil, a drying fatty acid and a semi-drying fatty acid with a polyalcohol in the presence of a polybasic acid.

### Claim 3 (depends on 1)

The aerosol coating composition of claim 1, wherein the inorganic microparticles are made of silica.

### Claim 4 (depends on 1)

The aerosol coating composition of claim 1, further containing a propellant.

### Claim 5

A metallic mechanical part coated with an aerosol coating composition, the aerosol coating composition comprising a modified alkyd resin, inorganic microparticles and an organic solvent, wherein
the modified alkyd resin includes the organic solvent, a dispersion stabilizer made of a vinyl based polymer soluble in the organic solvent at 20° C. when the dispersion stabilizer has a solid content of 50 mass % and has a viscosity of 300 P or less and an alkyd resin soluble in the organic solvent or a dispersion stabilizer made of said alkyd resin alone; and dispersion particles made of a vinyl based polymer insoluble in the organic solvent at 20° C. when the vinyl-based polymer has a solid content of 50 mass % and has a viscosity of 300 P or more;
the inorganic microparticles are made of one selected from silica, titanium oxide, zinc oxide, alumina, calcium carbonate, talc and clay;
the inorganic microparticles have a mean particle diameter ranging from 1.0 μm to 10.0 μm; and
the inorganic microparticles have a content ranging from 0.1 mass % to 5 mass %.

### Claim 6 (depends on 2)

The aerosol coating composition of claim 2, further containing a propellant.

### Claim 7 (depends on 5)

The metallic mechanical part of claim 5, wherein the alkyd resin is prepared by esterifying at least one selected from a drying oil, a semi-drying oil, a drying fatty acid and a semi-drying fatty acid with a polyalcohol in the presence of a polybasic acid.