发明授权
EP2502954B1 POLYCARBONATE RESIN FILM, TRANSPARENT FILM, AND PROCESS FOR PRODUCING SAME
有权
聚碳酸酯树脂膜,透明膜和生产该膜的方法
- 专利标题: POLYCARBONATE RESIN FILM, TRANSPARENT FILM, AND PROCESS FOR PRODUCING SAME
- 专利标题(中): 聚碳酸酯树脂膜,透明膜和生产该膜的方法
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申请号: EP10831632.4申请日: 2010-11-18
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公开(公告)号: EP2502954B1公开(公告)日: 2018-02-07
- 发明人: TANAKA Tomohiko , FUJI Michiaki , MURAKAMI Nao , SHIMIZU Takashi
- 申请人: Mitsubishi Chemical Corporation , Nitto Denko Corporation
- 申请人地址: 1-1 Marunouchi 1-chome Chiyoda-ku Tokyo 100-8251 JP
- 专利权人: Mitsubishi Chemical Corporation,Nitto Denko Corporation
- 当前专利权人: Mitsubishi Chemical Corporation,Nitto Denko Corporation
- 当前专利权人地址: 1-1 Marunouchi 1-chome Chiyoda-ku Tokyo 100-8251 JP
- 代理机构: Vossius & Partner Patentanwälte Rechtsanwälte mbB
- 优先权: JP2009264337 20091119; JP2010121985 20100527; JP2010149799 20100630
- 国际公布: WO2011062239 20110526
- 主分类号: C08J5/18
- IPC分类号: C08J5/18 ; C08G64/00
摘要:
An object of the present invention is to provide a polycarbonate resin film which contains a constitutional unit derived from a specific dihydroxy compound and is excellent in mechanical strength and thickness evenness and a process for producing a transparent film. The 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. (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
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