# US 11,111,393 B2 · Thermal insulating coating film and thermal insulating paint composition

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- Number: US 11,111,393 B2
- Document ID: US11111393B2
- Status: Granted
- Kind: B2
- Application number: 16/060,218
- Filed: 2016-12-08
- Published: 2018-12-20
- Granted: 2021-09-07
- Earliest claimed: 2015-12-09
- Assignees: Dream Maker 53 Corporation
- Applicants: Dream Maker 53 Corporation
- Inventors: Ichiro Muroi
- Web page: https://patentgrep.com/patent/US11111393B2

## CPC

- C09D 5/00: Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes
- C09D 5/004: {Reflecting paints; Signal paints}
- C09D 7/40: Additives
- C09D 7/65: macromolecular (C09D7/41-C09D7/48 take precedence)
- C09D 7/70: {characterised by shape, e.g. fibres, flakes or microspheres}
- C09D 125/04: Homopolymers or copolymers of styrene
- C09D 125/08: Copolymers of styrene (C09D129/08, C09D135/06, C09D155/02 take precedence)
- C09D 125/14: with unsaturated esters
- C09D 133/04: Homopolymers or copolymers of esters {(C09D143/04 takes precedence)}
- C09D 133/062: {Copolymers with monomers not covered by C09D133/06}
- E04B 1/76: specifically with respect to heat only (heat insulation in general F16L59/00)
- E04B 1/78: Heat insulating elements {(E04B1/7662 takes precedence)}
- E04B 2001/7691: {Heat reflecting layers or coatings}
- 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)
- E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001})

## Abstract

To provide a thermal insulating coating film, which can achieve excellent thermal insulating performance and far-infrared ray reflection performance when formed on, for example, the surface of an outer wall or inner wall of a house and which has excellent adhesiveness and durability. The thermal insulating coating film of the present invention contains a styrene-alkyl acrylate copolymer or a butyl acrylate-styrene copolymer, a white pigment, and hollow acrylic beads. The mass ratio of styrene-alkyl acrylate copolymer or butyl acrylate-styrene copolymer and hollow acrylic beads (hollow acrylic beads/styrene-alkyl acrylate copolymer or butyl acrylate-styrene copolymer) is 1 or less.

## Claims

### Claim 1

A thermal insulating coating film, comprising
a styrene-alkyl acrylate copolymer or a butyl acrylate-styrene copolymer,
polypropylene glycol monomethyl ether,
a white pigment, and
hollow acrylic beads,
wherein the hollow acrylic beads occupy 60-80 vol % in a whole coating film, and have an average particle diameter of 10 to 40 μm, and
the white pigment is rutile titanium dioxide, the rutile titanium dioxide is contained in an amount of 74 to 143 parts by mass with respect to 100 parts by mass of the styrene-alkyl acrylate copolymer or the butyl acrylate-styrene copolymer, and the rutile titanium dioxide has an average particle diameter of 0.1 to 10 μm.

### Claim 2 (depends on 1)

The thermal insulating coating film according to claim 1, wherein a hydrocarbon gas is filled inside the hollow acrylic beads.

### Claim 3

A thermal insulating paint composition, comprising
a styrene-alkyl acrylate copolymer emulsion or a butyl acrylate-styrene copolymer,
polypropylene glycol monomethyl ether,
a white pigment, and
hollow acrylic beads,
wherein the hollow acrylic beads include 17 to 32 parts by mass with respect to 100 parts by mass of the styrene-alkyl acrylate copolymer emulsion with a solid content of 50 mass % or the butyl acrylate-styrene copolymer with a solid content of 50 mass %, and have an average particle diameter of 10 to 40 μm, and
the white pigment is rutile titanium dioxide, the rutile titanium dioxide is contained in an amount of 74 to 143 parts by mass with respect to 100 parts by mass of the styrene-alkyl acrylate copolymer or the butyl acrylate-styrene copolymer, and the rutile titanium dioxide has an average particle diameter of 0.1 to 10 μm.

### Claim 4 (depends on 3)

The thermal insulating paint composition according to claim 3, wherein a hydrocarbon gas is filled inside the hollow acrylic beads.