# US 8,569,413 B2 · Aqueous coating composition

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- Number: US 8,569,413 B2
- Document ID: US8569413B2
- Status: Granted
- Kind: B2
- Application number: 13/126,808
- Filed: 2009-10-29
- Published: 2011-09-01
- Granted: 2013-10-29
- Earliest claimed: 2008-10-31
- Assignees: Three Bond Co., Ltd.
- Applicants: Hidenori Kanazawa; Naoki Satou
- Inventors: Hidenori Kanazawa; Naoki Satou
- Web page: https://patentgrep.com/patent/US8569413B2

## CPC

- C09D 123/0853: {Vinylacetate}
- C09D 5/02: Emulsion paints {including aerosols}
- C09D 7/65: macromolecular (C09D7/41-C09D7/48 take precedence)
- C09D 7/69: {Particle size larger than 1000 nm}
- C09D 127/18: Homopolymers or copolymers of tetrafluoroethene
- C08L 23/0853: Ethylene vinyl acetate copolymers
- C08L 25/14: with unsaturated esters
- C08L 27/18: Homopolymers or copolymers or tetrafluoroethene
- C08L 33/06: of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L 2205/02: containing two or more polymers of the same C08L -group
- C08L 2205/22: Mixtures comprising a continuous polymer matrix in which are dispersed crosslinked particles of another polymer
- F16B 33/004: {Sealing; Insulation (by means of washers F16B43/001)}
- Y10T 428/31544: Addition polymer is perhalogenated
- Y10T 428/31699: Ester, halide or nitrile of addition polymer
- 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)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An aqueous coating composition having excellent coating adhesion, workability, heat resistance and chemical resistance, and has an object to provide an aqueous coating composition for sealing, which is suitable for members to be screwed in. An aqueous coating composition including: as main components, component (A) an ethylene-vinyl acetate copolymer resin emulsion and component (B) two or more PTFE resin powders having different particle diameters, in which 35 to 80 parts by mass of water is contained on the basis of 100 parts by mass of the total of (A) and (B).

## Claims

### Claim 1

An aqueous coating composition comprising: the following components (A) and (B) as main components, wherein 35 to 80 parts by mass of water is contained based on 100 parts by mass of the total of components (A) and (B):
Component (A): an ethylene-vinyl acetate copolymer resin emulsion; Component (B): two or more PTFE resin powders having different particle diameters, wherein the powders have a predetermined particle diameter range,
wherein component (B) includes (b-1) a PTFE resin powder having an average particle diameter of 2 to 20 μm and (b-2) a PTFE resin powder having an average particle diameter of 20 to 100 μm, and wherein a mass ratio (b-1):(b-2) of (b-1) and (b-2) in component (B) is 5 to 35: 95 to 65.

### Claim 2 (depends on 1)

The aqueous coating composition according to claim 1, wherein a mass ratio (A)/(B) of a solid of component (A) and component (B) is 0.03 to 0.40.

### Claim 3 (depends on 1)

The aqueous coating composition according to claim 1, further comprising: (C) 0.0005 to 1.0 parts by mass of sodium polyacrylate on the basis of 100 parts by mass of the total of components (A) and (B).

### Claim 4 (depends on 1)

The aqueous coating composition according to claim 1, wherein component (A) has a viscosity of 1000 to 5500 mPa·s.

### Claim 5 (depends on 1)

A member of which a surface is coated by the aqueous coating composition according to claim 1.

### Claim 6 (depends on 5)

The member according to claim 5, wherein the member is a screwed member.