Invention Grant
- Patent Title: Copolycarbonate
- Patent Title (中): 共聚碳酸酯
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Application No.: US13884309Application Date: 2011-11-10
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Publication No.: US08816039B2Publication Date: 2014-08-26
- Inventor: Tetsuya Motoyoshi , Masatoshi Ando , Tsuyoshi Takeda
- Applicant: Tetsuya Motoyoshi , Masatoshi Ando , Tsuyoshi Takeda
- Applicant Address: JP Osaka
- Assignee: Teijin Limited
- Current Assignee: Teijin Limited
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2010-253757 20101112
- International Application: PCT/JP2011/076462 WO 20111110
- International Announcement: WO2012/063965 WO 20120518
- Main IPC: C08G63/02
- IPC: C08G63/02 ; G02B1/04 ; C08G64/16 ; C08G63/00
Abstract:
The present invention provides a copolycarbonate that has a low photoelastic constant and has fewer foamed cells and that is in particular suitable for use in optical fields.The present invention is a copolycarbonate containing 10 to 90 mol % of a unit (A) derived from spiroglycol and 90 to 10 mol % of a unit (B) derived from aromatic phenol and having terminals satisfying the following expressions (i) and (ii), 0.0001
Public/Granted literature
- US20130261283A1 COPOLYCARBONATE Public/Granted day:2013-10-03
Information query
