发明授权
US08263731B2 Optical film comprising birefringent naphthalate copolyester having branched or cyclic C4-C10 alkyl units
有权
包含具有支链或环状C 4 -C 10烷基单元的双折射萘二甲酸酯共聚酯的光学膜
- 专利标题： Optical film comprising birefringent naphthalate copolyester having branched or cyclic C4-C10 alkyl units
- 专利标题（中）： 包含具有支链或环状C 4 -C 10烷基单元的双折射萘二甲酸酯共聚酯的光学膜
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申请号： US13182658申请日： 2011-07-14
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公开(公告)号： US08263731B2公开(公告)日： 2012-09-11
- 发明人: Yufeng R. Liu , David T. Yust , Stephen A. Johnson , Kristopher J. Derks
- 申请人： Yufeng R. Liu , David T. Yust , Stephen A. Johnson , Kristopher J. Derks
- 申请人地址： US MN St. Paul
- 专利权人： 3M Innovative Properties Company
- 当前专利权人： 3M Innovative Properties Company
- 当前专利权人地址： US MN St. Paul
- 代理商 Carolyn A. Fischer
- 主分类号： B32B27/36
- IPC分类号： B32B27/36 ; C08G63/16 ; C08G63/181 ; C08G63/187 ; C08G63/189
摘要：
The present invention relates to multilayer optical films and birefringent copolyester films. The birefringent copolyester optical layer or birefringent copolyester film comprises a major amount of naphthalate units, ethylene units, and a minor amount of branched or cyclic C4 to C10 alkyl units. Also described are certain copolyester polymeric materials further comprising subunits of a phthalate ionomer such as dimethyl sulfosodium isophthalate ionomer.
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