Westerman, Hattori, Daniels & Adrian, LLP
Copolymerized aromatic polyester, biaxially oriented polyester film, and magnetic recording medium
Disclosed are a biaxially oriented polyester film which is excellent in dimensional stability, especially dimensional stability against environmental changes in, for example, temperature and humidity, and a polyester capable of providing the biaxially oriented polyester film with excellent dimensional stability.There is provided a copolymerized aromatic polyester containing aromatic dicarboxylic acid components represented by the following formulae (I) and (II) and a glycol component represented by the following formula (III), wherein    In the structural formulae (I) to (III), RA represents an alkylene group having 1 to 10 carbon atoms; RB represents a phenylene group or a naphthalenediyl group; and RC represents an alkylene group having 2 to 4 carbon atoms or a cycloalkylene group having 8 to 10 carbon atoms.
Teijin Limited
C Y Y Y Y C G G G C Y G B B C G
C08G Y10T Y10T Y10T Y10T C08J G11B G11B G11B C08G Y10T G11B B32B B32B C08J G11B
inventional additional additional additional additional inventional inventional inventional inventional inventional additional inventional inventional inventional additional inventional
Toshio Hiromichi Tatsuya Yoshitaka
Ishidera Ito Ogawa Tanaka