发明授权
US07048978B2 Polyester resin, polyester resin composition, and sheet, film and hollow molded container obtained therefrom
失效
聚酯树脂，聚酯树脂组合物，以及由其获得的片材，薄膜和中空成型容器
- 专利标题： Polyester resin, polyester resin composition, and sheet, film and hollow molded container obtained therefrom
- 专利标题（中）： 聚酯树脂，聚酯树脂组合物，以及由其获得的片材，薄膜和中空成型容器
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申请号： US11115104申请日： 2005-04-27
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公开(公告)号： US07048978B2公开(公告)日： 2006-05-23
- 发明人: Tomohiko Tanaka , Atsushi Kasai
- 申请人： Tomohiko Tanaka , Atsushi Kasai
- 申请人地址： JP Tokyo
- 专利权人： Mitsubishi Chemical Corporation
- 当前专利权人： Mitsubishi Chemical Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： JP2002-317854 20021031
- 主分类号： B29D22/00
- IPC分类号： B29D22/00 ; C08G63/00
摘要：
To provide a polyester resin particularly useful in application to optical films, etc.A polyester resin which is an alicyclic polyester comprising dicarboxylic acid units and diol units, characterized by the following (1) to (4): (1) the dicarboxylic acid units are composed mainly of 1,4-cyclohexanedicarboxylic acid units, (2) the diol units are composed mainly of 1,4-cyclohexanedimethanol units, (3) the ratio of alkyl ester terminals to all terminals of the polyester is at most 5 mol %, and (4) the light transmittance of a molded plate of the resin having a thickness of 2 mm is at least 87%.
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