The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2012
Filed:
Aug. 28, 2006
Satoshi Yoshinaka, Kanagawa, JP;
Takeo Hayashi, Kanagawa, JP;
Kazuaki Mukasa, Kanagawa, JP;
Takuya Minezaki, Kanagawa, JP;
Takao Ota, Tokyo, JP;
Satoshi Yoshinaka, Kanagawa, JP;
Takeo Hayashi, Kanagawa, JP;
Kazuaki Mukasa, Kanagawa, JP;
Takuya Minezaki, Kanagawa, JP;
Takao Ota, Tokyo, JP;
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Abstract
Provided is a vibration damping material comprising: a polyester resin containing dicarboxylic acid constitutional units and diol constitutional units; and mica being dispersed in the polyester resin, wherein: (1) a ratio [(A+B)/(A+B)] of a total of (A) a number of the dicarboxylic acid constitutional units having an odd number of carbon atoms in a polyester main chain and (B) a number of the diol constitutional units having an odd number of carbon atoms in the polyester main chain with respect to a total of (A) a number of total dicarboxylic acid constitutional units and (B) a number of total diol constitutional units in the polyester resin is in the range of 0.5 to 1; and (2) an average particle diameter calculated from a volume-based particle diameter frequency distribution of the mica in the vibration damping material is 25 to 500 μm. The damping material has a high versatility, is lightweight, shows an excellent vibration damping property and can be produced easily with a batch mixer.