Invention Grant
- Patent Title: Polycarbonate resin film, and transparent film and process for producing the same
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Application No.: US13475435Application Date: 2012-05-18
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Publication No.: US09678245B2Publication Date: 2017-06-13
- Inventor: Tomohiko Tanaka , Michiaki Fuji , Nao Murakami , Takashi Shimizu
- Applicant: Tomohiko Tanaka , Michiaki Fuji , Nao Murakami , Takashi Shimizu
- Applicant Address: JP Tokyo JP Ibaraki-shi
- Assignee: MITSUBISHI CHEMICAL CORPORATION,NITTO DENKO CORPORATION
- Current Assignee: MITSUBISHI CHEMICAL CORPORATION,NITTO DENKO CORPORATION
- Current Assignee Address: JP Tokyo JP Ibaraki-shi
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-264337 20091119; JP2010-121985 20100527; JP2010-149799 20100630
- Main IPC: B32B27/36
- IPC: B32B27/36 ; C08G64/06 ; G02B1/04 ; C08J5/18 ; G02B5/30 ; G02F1/13363

Abstract:
A polycarbonate resin film of the present invention is formed from a polycarbonate resin which contains at least a constitutional unit derived from a dihydroxy compound having a bonded structure represented by the following structural formula (1) and satisfies the following expression (2) when subjected to a tensile test at a standard stretching temperature for the polycarbonate resin and at a pulling speed (strain rate) of 1,000%/min. [Chem. 1] CH2—O (1) (No hydrogen atom is bonded to the oxygen atom contained in the structural formula (1).) 0.9≦[(lower yield stress in tension)/(upper yield stress in tension)]≦1 (2).
Public/Granted literature
- US09709701B2 Polycarbonate resin film, and transparent film and process for producing the same Public/Granted day:2017-07-18
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