发明授权
- 专利标题: Method of producing liquid crystalline coating liquid, and optically anisotropic film
- 专利标题(中): 液晶涂布液的制造方法以及光学各向异性膜
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申请号: US13579408申请日: 2011-05-19
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公开(公告)号: US08808813B2公开(公告)日: 2014-08-19
- 发明人: Shoichi Matsuda , Toru Umemoto , Tadayuki Kameyama
- 申请人: Shoichi Matsuda , Toru Umemoto , Tadayuki Kameyama
- 申请人地址: JP Ibaraki-shi
- 专利权人: Nitto Denko Corporation
- 当前专利权人: Nitto Denko Corporation
- 当前专利权人地址: JP Ibaraki-shi
- 代理机构: Westerman, Hattori, Daniels & Adrian, LLP
- 优先权: JP2010-197646 20100903
- 国际申请: PCT/JP2011/061506 WO 20110519
- 国际公布: WO2012/029362 WO 20120308
- 主分类号: C09K19/60
- IPC分类号: C09K19/60 ; C09K19/54 ; C09K19/52 ; C09K19/22
摘要:
The present invention provides a method of producing a liquid crystalline coating liquid that substantially does not contain a fine crystal. The method of producing a liquid crystalline coating liquid of the present invention contains a heating step of heating a treatment liquid containing a lyotropic liquid crystalline compound containing an impurity, and a solvent, a depositing step of depositing a deposit by cooling the treatment liquid after the heating step to a temperature lower than 40° C., and a removing step of removing the deposit from the treatment liquid.
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