Invention Grant
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
- Patent Title: Polyester resin, polyester resin composition, and sheet, film and hollow molded container obtained therefrom
- Patent Title (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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Application No.: US11115104Application Date: 2005-04-27
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Publication No.: US07048978B2Publication Date: 2006-05-23
- Inventor: Tomohiko Tanaka , Atsushi Kasai
- Applicant: Tomohiko Tanaka , Atsushi Kasai
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Chemical Corporation
- Current Assignee: Mitsubishi Chemical Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- Priority: JP2002-317854 20021031
- Main IPC: B29D22/00
- IPC: B29D22/00 ; C08G63/00
Abstract:
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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