# US 10,865,314 B2 · Resin composition for vibration-damping coating material, and production method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,865,314 B2 - Document ID: US10865314B2 - Status: Granted - Kind: B2 - Application number: 16/338,251 - Filed: 2017-09-29 - Published: 2020-01-30 - Granted: 2020-12-15 - Earliest claimed: 2016-09-30 - Assignees: Nippon Shokubai Co., Ltd. - Applicants: Nippon Shokubai Co., Ltd. - Inventors: Fuyuko Namimoto; Yukihiro Miyawaki - Web page: https://patentgrep.com/patent/US10865314B2 ## CPC - C08F 2/26: anionic - C09D 5/022: {Emulsions, e.g. oil in water} - C08F 265/06: Polymerisation of acrylate or methacrylate esters on to polymers thereof - C09D 7/70: {characterised by shape, e.g. fibres, flakes or microspheres} - C09D 125/14: with unsaturated esters - C09D 133/06: of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical - C09D 133/064: {containing anhydride, COOH or COOM groups, with M being metal or onium-cation} - C09D 151/003: {grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C09D151/04, C09D151/06 take precedence)} - F16F 1/3605: {characterised by their material (F16F1/362, F16F1/364, F16F1/366, F16F1/37 take precedence; composition of macromolecular compounds in general C08L)} - C08F 2/22: Emulsion polymerisation - F16F 2224/02: solids - F16F 2226/00: Manufacturing; Treatments - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - 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) - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract The invention provides a method for providing a coat having excellent appearance and an excellent vibration damping property in a temperature range of a use environment of vibration damping materials. The invention relates to a vibration damping coating resin composition including an emulsion particle having a multilayer structure, the emulsion particle including an outermost layer and an inner layer located inside the outermost layer, the outermost layer being formed from a resin having a glass transition temperature of 60° C. or higher, the outermost layer being present in a proportion of 1% to 30% by mass in 100% by mass of the emulsion particle. ## Claims ### Claim 1 A vibration damping coating comprising: a vibration damping coating resin composition that contains an emulsion particle having a multilayer structure; and a pigment, the emulsion particle including an outermost layer and an inner layer located inside the outermost layer, the inner layer being formed from a resin, the outermost layer being formed from a resin having a glass transition temperature of 75° C. or higher, the outermost layer being present in a proportion of 1% to 17% by mass in 100% by mass of the emulsion particle, and wherein at least one of the resin forming the outer layer and the resin forming the inner layer comprises a (meth)acrylic polymer. ### Claim 2 (depends on 1) The vibration damping coating according to claim 1, wherein the glass transition temperature of the resin forming the outermost layer is higher than a glass transition temperature of the resin forming the inner layer by 30° C. or more. ### Claim 3 (depends on 1) The vibration damping coating according to claim 1, wherein the glass transition temperature of the resin forming the outermost layer is higher than a glass transition temperature of the resin forming the inner layer by 80° C. or more. ### Claim 4 (depends on 1) The vibration damping coating according to claim 1, wherein a glass transition temperature of the resin forming the inner layer is 30° C. to 40° C. ### Claim 5 (depends on 1) The vibration damping coating according to claim 1, wherein a glass transition temperature of the resin forming the inner layer is 15° C. or higher. ### Claim 6 (depends on 1) The vibration damping coating according to claim 1, wherein a glass transition temperature of the resin forming the inner layer is 10° C. or higher. ### Claim 7 (depends on 1) The vibration damping coating according to claim 1, wherein a glass transition temperature of the resin forming the inner layer is 35° C. or lower. ### Claim 8 (depends on 1) The vibration damping coating according to claim 1, wherein the composition further comprises a component having a sulfosuccinic acid structure or salt thereof and/or a component having a fatty acid structure or salt thereof. ### Claim 9 (depends on 8) The vibration damping coating according to claim 8, wherein the composition comprises a component having a sulfosuccinic acid structure or salt thereof. ### Claim 10 (depends on 8) The vibration damping coating according to claim 8, wherein a total amount of the component having a sulfosuccinic acid structure or salt thereof and the component having a fatty acid structure or salt thereof is 25% by mass or more in 100% by mass of an anionic surfactant in the composition. ### Claim 11 (depends on 8) The vibration damping coating according to claim 8, wherein the total amount of the component having a sulfosuccinic acid structure or salt thereof and the component having a fatty acid structure or salt thereof is 50% by mass or more in 100% by mass of the anionic surfactant in the composition. ### Claim 12 (depends on 8) The vibration damping coating according to claim 8, wherein the total amount of the component having a sulfosuccinic acid structure or salt thereof and the component having a fatty acid structure or salt thereof in the composition is 0.1% to 20% by mass relative to 100% by mass of the entire monomer component used to produce an emulsion. ### Claim 13 (depends on 1) The vibration damping coating according to claim 1, wherein the glass transition temperature of the resin forming the outermost layer is 80° C. or higher. ### Claim 14 (depends on 8) The vibration damping coating according to claim 8, wherein the glass transition temperature of the resin forming the outermost layer is 80° C. or higher. ### Claim 15 (depends on 1) The vibration damping coating according to claim 1, wherein at least one of the resin forming the outer layer and the resin forming the inner layer has a weight average molecular weight of 30000 to 400000. ### Claim 16 (depends on 8) The vibration damping coating according to claim 8, wherein at least one of the resin forming the outer layer and the resin forming the inner layer has a weight average molecular weight of 30000 to 400000. ### Claim 17 (depends on 1) A vibration damping coat obtained from the vibration damping coating according to claim 1. ### Claim 18 A method for producing a vibration damping coating resin composition containing an emulsion particle having a multilayer structure, the method comprising: polymerizing a monomer component to form a resin-containing inner layer; and polymerizing a monomer component to produce the emulsion particle with an outermost layer formed from a resin having a glass transition temperature of 75° C. or higher and the outermost layer is present at a proportion of 1-17% by mass relative to 100% in the mass of the emulsion particle, wherein at least one of the resin forming the outer layer and the resin forming the inner layer comprises a (meth)acrylic polymer. ### Claim 19 A vibration damping coating comprising: a vibration damping coating resin composition that contains an emulsion particle having a multilayer structure; and a pigment, the emulsion particle including an outermost layer and an inner layer located inside the outermost layer, the inner layer being formed from a resin, the outermost layer being formed from a resin having a glass transition temperature of 60° C. or higher, the outermost layer being present in a proportion of 1% to 17% by mass in 100% by mass of the emulsion particle, wherein a glass transition temperature of the resin forming the outermost layer is higher than a glass transition temperature of the resin forming the inner layer by 10° C. or more, and wherein at least one of the resin forming the outer layer and the resin forming the inner layer comprises a (meth)acrylic polymer. ### Claim 20 A method for producing a vibration damping coating resin composition containing an emulsion particle having a multilayer structure, the method comprising: polymerizing a monomer component to form a resin containing-inner layer; and polymerizing a monomer component to produce the emulsion particle with an outermost layer formed from a resin having a glass transition temperature of 60° C. or higher, and the outermost layer is present at a proportion of 1% to 17% by mass relative to 100% in the mass of the emulsion particle, wherein a glass transition temperature of a resin forming the outermost layer is higher than a glass transition temperature of the resin forming the inner layer by 10° C. or more, and wherein at least one of the resin forming the outer layer and the resin forming the inner layer comprises a (meth)acrylic polymer.