发明名称 |
BIAXIALLY ORIENTED MULTILAYER FILM |
摘要 |
A biaxially oriented laminated polyester film which has dimensional stability against environmental changes such as temperature and humidity variations and rarely elongates when a load is applied thereto at a high temperature. The biaxially oriented laminated film comprises a film layer (A) made of an aromatic polyester (A) and a film layer (B) made of an aromatic polyester (B), wherein
the content of a 6,6'-(alkylenedioxy)di-2-naphthoic acid component represented by the following formula (I) based on the total of all the acid components is less than 5 mol% in the aromatic polyester (A) and not less than 5 mol% and less than 80 mol% in the aromatic polyester (B); and
the peak temperature of tan´ on a high temperature side is 135°C or higher when viscoelasticity is measured in the machine direction.
(in the formula (I), R is an alkylene group having 1 to 10 carbon atoms.) |
申请公布号 |
EP2272669(A4) |
申请公布日期 |
2012.10.31 |
申请号 |
EP20090733701 |
申请日期 |
2009.04.21 |
申请人 |
TEIJIN LIMITED |
发明人 |
KINOSHITA, EIJI;TOJO, MITSUO;HANDA, MAKOTO;ISHIDA, TAKESHI |
分类号 |
B32B27/36;C08G63/06;G11B5/73;G11B5/78 |
主分类号 |
B32B27/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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