Aerosol paint composition and metallic mechanical part coated with same

Patent metadata

Field	Value
Publication number	US-10501643-B2
Application number	US-201515532490-A
Country	US
Kind code	B2
Filing date	Dec 2, 2015
Priority date	Dec 2, 2014
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

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.

First claim

What is claimed is:

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 %.

2. 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.

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

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

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 %.

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

7. 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.

Assignees

• Nhk Spring Co Ltd
• Nhk Spring Production Company

Inventors

• Minami Kenji
• FURUTA Yasutaka
• Ogami Yuki

Classifications

• B05D7/16

  using synthetic lacquers or varnishes · CPC title

• C08F285/00

  Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers · CPC title

• C08L2203/16

  used for films · CPC title

• C09D1/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances · CPC title

• C09D151/08

  grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title