Arakawa Chemical Industries, Ltd.

Techno-umg Co., Ltd.

Taichi Maruyama

Akihisa Inoue

Hironori Kitaguchi

Kentaro Hiraishi

Naoyuki Makiuchi

Shinji Tonsho

Naoyuki Kawashima

A hitting sound reducing material made of a (meth)acrylic acid ester polymer (B) comprising: a polymer (b1) comprising a structural unit derived from an acrylic ester compound and a structural unit derived from a methacrylic ester compound, and having a glass transition temperature of −15° C. to +5° C.; and a polymer (b2) comprising at least one selected from the group consisting of a structural unit derived from a methacrylic acid ester compound, a structural unit derived from an aromatic vinyl compound, and a structural unit derived from a vinyl cyanide compound, wherein the polymer (b1) has a temperature (peak temperature) indicating a peak value of a main dispersion of tan δ of −5° C. to +20° C., and a peak intensity, which is a peak value of the intensity, of 2.055 or more.

Hitting sound reducing material and thermoplastic resin composition

An emulsion composition according to the present invention includes: a polymerizable compound comprising two or more (meth)acryloyl groups; a surfactant; and a dispersion medium including water as a principal component, in which an oil droplet diameter Dcorresponding to a diameter at cumulative 90% by volume in the oil droplet size distribution of oil droplets comprising the polymerizable compound and the surfactant, measured according to a laser diffraction and scattering measurement process is less than 1.8 &#x3bc;m. A maximum oil droplet diameter Dof the oil droplets, measured according to the laser diffraction and scattering measurement process is preferably less than 4.0 &#x3bc;m. A content of the polymerizable compound in the composition with respect to 100 parts by mass of a total of components other than the dispersion medium is preferably no less than 40 parts by mass. The oil droplets may further comprise an inorganic particle.

Emulsion composition and production method thereof, and laminate and production method thereof

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Tokyo, Japan

Taichi Maruyama