Damping-imparting agent and resin composition for damping material
AssigneeNippon Shokubai Co., Ltd.
InventorYukihiro Miyawaki
Life of this patent
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Abstract
The present invention aims to provide a coating material which has high mechanical stability and is capable of providing a coat which has excellent appearance and exhibits excellent damping properties in a wide temperature range. The present invention relates to a damping-imparting agent including a compound having a sulfosuccinic acid (salt) structure. The present invention also relates to a resin composition for damping materials, including an emulsion prepared by polymerizing a monomer component, the composition further including a component having a sulfosuccinic acid (salt) structure.
Claims12
A resin composition for damping materials, comprising:
- an emulsion comprising a (meth)acrylic polymer, the emulsion being prepared by polymerizing a monomer component comprising 0.1% to 3% by mass of (meth)acrylic acid monomer and 97% to 99.9% by mass of one or more other copolymerizable unsaturated monomers, the emulsion having a glass transition temperature from −20° C. to 40° C.;
- an aqueous solvent in which the emulsion dispersed;
- and
- a component having a sulfosuccinic acid (salt) structure and containing no reactive unsaturated carbon-carbon bond, the component having a sulfosuccinic acid (salt) structure being 70% or more by mass of all anionic surfactants in the resin composition, the component having a sulfosuccinic acid (salt) structure being represented by formula (1):
- wherein R1 is one of a hydrogen atom or a C1-C30 monovalent alkyl group,
- R2 is a C2-C4 alkylene group,
- R3 is one of a hydrogen atom, an alkyl group, a metal salt, an ammonium salt, or an organic amine salt,
- -A- is one of —O— or —NH—,
- X and Y are each respectively one of a hydrogen atom or a sulfonic acid (salt) group, and at least one of the X and the Y being the sulfonic acid (salt) group, and
- n is either i) 3 to 200 or ii) 0 and the -A- is the —NH—, n being a molar average.
A method for producing a coat, comprising:
- heating a coating material that contains an emulsion prepared by polymerizing a monomer component, a component having a sulfosuccinic acid (salt) structure and containing no reactive unsaturated carbon-carbon bond, and a pigment to foam the coating material, thereby producing a coat, wherein
- the emulsion comprises a (meth)acrylic polymer and has a glass transition temperature from −20° C. to 40° C., the monomer component comprising 0.1% to 3% by mass of (meth)acrylic acid monomer and 97% to 99.9% by mass of one or more other copolymerizable unsaturated monomers, and
- the component having a sulfosuccinic acid (salt) structure being 70% or more by mass of all anionic surfactants in the coating material, and the component having a sulfosuccinic acid (salt) structure is represented by formula (1):
- R1 is one of a hydrogen atom or a C1-C30 monovalent alkyl group,
- R2 is a C2-C4 alkylene group,
- R3 is one of a hydrogen atom, an alkyl group, a metal salt, an ammonium salt, or an organic amine salt,
- -A- is one of —O— or —NH—,
- X and Y are each respectively one of a hydrogen atom or a sulfonic acid (salt) group, and at least one of the X and the Y being the sulfonic acid (salt) group, and
- n is either i) 3 to 200 or ii) 0 and the -A- is the —NH—, n being a molar average.
Dependencies are inferred from the claim text.