US9626952B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9626952-B2 |
| Application number | US-201414767221-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 14, 2014 |
| Priority date | Feb 15, 2013 |
| Publication date | Apr 18, 2017 |
| Grant date | Apr 18, 2017 |
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The present invention aims to provide a composition for vibration damping materials which provides excellent vibration damping property. The present invention relates to an emulsion composition for vibration damping materials including: a vibration damping modifier including a compound that has 7 or more carbon atoms, a boiling point of 190° C. or higher, and at least two ether groups or at least two ester groups in the molecule; and a polymer emulsion.
Opening claim text (preview).
The invention claimed is: 1. An emulsion composition for vibration damping materials, comprising: a vibration damping modifier including a compound that has 7 or more carbon atoms, a boiling point of 190° C. or higher, a solubility of 6 to 80 g in 100 g of water, and at least two ether groups or at least two ester groups; and a polymer emulsion. 2. The emulsion composition for vibration damping materials according to claim 1 , wherein the vibration damping modifier further includes a compound that has 7 or more carbon atoms, a boiling point of 400° C. or higher, ester groups in the molecule, and at least two ether groups or at least two ester groups in the molecule. 3. An emulsion composition for vibration damping materials, comprising: a vibration damping modifier including a compound that has 7 or more carbon atoms, a boiling point of 400° C. or higher, ester groups in the molecule and at least two ether groups or at least two ester groups in the molecule; and a polymer emulsion. 4. The emulsion composition for vibration damping materials according to claim 1 , wherein the polymer emulsion includes a polymer obtained from a monomer component that includes 0.5 to 10% by mass of an unsaturated carboxylic acid monomer and 20 to 80% by mass of a monomer whose homopolymer has a glass transition temperature of 100° C. or higher, based on 100% by mass of the monomer component. 5. The emulsion composition for vibration damping materials according to claim 4 , wherein the vibration damping modifier is present in an amount of 0.1 to 50% by mass based on 100% by mass of the monomer whose homopolymer has a glass transition temperature of 100° C. or higher, the monomer being included in the monomer component which is a raw material of the polymer emulsion. 6. The emulsion composition for vibration damping materials according to claim 1 , wherein a monomer component which is a raw material of the polymer emulsion includes butyl acrylate and/or 2-ethylhexyl acrylate. 7. The emulsion composition for vibration damping materials according to claim 3 , wherein the polymer emulsion includes a polymer obtained from a monomer component that includes 0.5 to 10% by mass of an unsaturated carboxylic acid monomer and 20 to 80% by mass of a monomer whose homopolymer has a glass transition temperature of 100° C. or higher, based on 100% by mass of the monomer component. 8. The emulsion composition for vibration damping materials according to claim 7 , wherein the vibration damping modifier is present in an amount of 0.1 to 50% by mass based on 100% by mass of the monomer whose homopolymer has a glass transition temperature of 100° C. or higher, the monomer being included in the monomer component which is a raw material of the polymer emulsion. 9. The emulsion composition for vibration damping materials according to claim 3 , wherein a monomer component which is a raw material of the polymer emulsion includes butyl acrylate and/or 2-ethylhexyl acrylate.
Homopolymers or copolymers of methyl methacrylate · CPC title
with unsaturated esters · CPC title
Selection of materials · CPC title
Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title
Copolymers of styrene (C08L29/08, C08L35/06, C08L55/02 take precedence) · CPC title
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