Invention Grant
- Patent Title: Cyclic olefin-based copolymer, film, and polarizing plate and liquid crystal display device including the same
- Patent Title (中): 环状烯烃系共聚物，膜，偏振片及其液晶显示装置
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Application No.: US12235867Application Date: 2008-09-23
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Publication No.: US07662445B2Publication Date: 2010-02-16
- Inventor: Masato Nagura , Seiya Sakurai
- Applicant: Masato Nagura , Seiya Sakurai
- Applicant Address: JP Minato-Ku, Tokyo
- Assignee: Fujifilm Corporation
- Current Assignee: Fujifilm Corporation
- Current Assignee Address: JP Minato-Ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2007-248087 20070925; JP2008-058591 20080307
- Main IPC: G02B1/08
- IPC: G02B1/08 ; C08F236/20 ; C08F232/08 ; C08F4/642
Abstract:
A copolymer contains 10 to 69 mol % of a structural unit derived from propylene, 1 to 50 mol % of a structural unit derived from at least one α-olefin having a carbon number of from 4 to 20 and 30 to 89 mol % of a structural unit derived from at least one cyclic olefin represented by the formula (1) as defined herein, and has a weight average molecular weight of from 50,000 to 1,000,000.
Public/Granted literature
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