Invention Grant
- Patent Title: Biaxially oriented polyester film and linear magnetic recording medium
- Patent Title (中): 双轴取向聚酯薄膜和线性磁记录介质
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Application No.: US13822350Application Date: 2011-09-16
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Publication No.: US08742058B2Publication Date: 2014-06-03
- Inventor: Masato Horie , Takuji Higashioji , Nozomi Yokoyama
- Applicant: Masato Horie , Takuji Higashioji , Nozomi Yokoyama
- Applicant Address: JP
- Assignee: Toray Industries, Inc.
- Current Assignee: Toray Industries, Inc.
- Current Assignee Address: JP
- Agency: DLA Piper LLP (US)
- Priority: JP2010-214825 20100927; JP2011-123993 20110602
- International Application: PCT/JP2011/071238 WO 20110916
- International Announcement: WO2012/043281 WO 20120405
- Main IPC: C08G63/183
- IPC: C08G63/183 ; C08G63/13 ; C08G63/137 ; C08G63/189 ; C08G63/199 ; C08G63/88
Abstract:
A biaxially oriented polyester film has a ratio of Young's modulus in the transverse direction to Young's modulus in the machine direction of 1.5 to 3, an average value of refractive indices in the machine direction, in the transverse direction, and in the thickness direction of 1.590 to 1.680, a minor melting peak temperature of 160 to 190° C., and a coefficient of hygroscopic expansion in the transverse direction of 0 to 6 ppm/% RH.
Public/Granted literature
- US20130172515A1 BIAXIALLY ORIENTED POLYESTER FILM AND LINEAR MAGNETIC RECORDING MEDIUM Public/Granted day:2013-07-04
Information query
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