Patent 7884173 was granted and assigned to Teijin on February, 2011 by the United States Patent and Trademark Office.
To provide an aromatic polyester which is formed into a film having excellent heat resistance, color, mechanical properties, dimensional stability and gas barrier properties and a manufacturing process thereof;the aromatic polyester comprises a dicabroxylic acid component and a diol component, wherein(i) the dicarboxylic acid component contains 50 to 100 mol % of a recurring unit represented by the following formula (A):