US 8,410,244 B2Granted

Vibration-damping film

AssigneeMitsubishi Gas Chemical Company, Inc.

InventorsKazuaki Mukasa, Takuya Minezaki, Akifumi Tiba, Kenji Harada

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Abstract

Vibration damping film comprising a composition obtained by dispersing titanium dioxide (Y) and mica flakes (Z) in a polyester resin (X) comprising dicarboxylic acid units and diol units, satisfying conditions (I) to (III), and having a thickness in the range of 20 to 200 μm : (I) Content of polyester resin (X), titanium dioxide (Y) and mica flakes (Z) in the composition is in the range of 35 to 60% by mass, in the range of 5 to 15% by mass and in the range of 30 to 55% by mass, respectively, (II) Average particle diameter of the mica flakes (Z) in the resin composition is in the range of 5 to 80 μm, and (III) Elongation at failure point of the resin composition measured according to JIS K7127 is in the range of 30 to 70%.

Claims11

Dependent claims

A vibration damping film comprising a resin composition obtained by dispersing titanium dioxide (Y) and mica flakes (Z) in a polyester resin (X) composed of a dicarboxylic acid constitutional units and a diol constitutional units,

wherein said resin composition satisfies all of the following conditions (I) to (III), and
wherein the film has a thickness in the range of 20 to 200 μm:
(I) Content of polyester resin (X), titanium dioxide (Y) and mica flakes (Z) in the resin composition is in the range of 35 to 60% by mass, in the range of 5 to 15% by mass and in the range of 30 to 55% by mass, respectively,
(II) Average particle diameter of the mica flakes (Z) in the resin composition is in the range of 5 to 80 μm, and
(III) Elongation at failure point of the resin composition measured according to JIS K7127 is in the range of 30 to 70%.

2 more elements

Dependencies are inferred from the claim text.