Invention Grant
- Patent Title: Liquid crystalline compound, liquid crystalline composition, optical film, and optical laminate
- Patent Title (中): 液晶化合物,液晶组合物,光学膜和光学层压板
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Application No.: US12526119Application Date: 2008-02-21
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Publication No.: US08425990B2Publication Date: 2013-04-23
- Inventor: Seiji Okada , Kentarou Tamura
- Applicant: Seiji Okada , Kentarou Tamura
- Applicant Address: JP Tokyo
- Assignee: Zeon Corporation
- Current Assignee: Zeon Corporation
- Current Assignee Address: JP Tokyo
- Agency: Kratz, Quintos & Hanson, LLP
- Priority: JP2007-044425 20070223
- International Application: PCT/JP2008/052937 WO 20080221
- International Announcement: WO2008/102838 WO 20080828
- Main IPC: C09K19/00
- IPC: C09K19/00

Abstract:
A liquid crystalline compound shown by the following formula (I). wherein R1 to R13 represent a hydrogen atom, a fluorine atom, a methyl group, a trifluoromethoxy group, or a cyano group, X represents —O—, —O—CO—, or the like, n is 0 or 1, and R14 represents -A-CO—CH═CH2, wherein A is a linking group. The liquid crystalline compound has a higher liquid crystal phase upper limit temperature, is chemically stable, can be inexpensively produced, and exhibits a large selective reflection wavelength zone Δλ (a large Δn). A liquid crystalline composition comprising the liquid crystalline compounds, an optical film having a liquid crystal layer formed using the liquid crystalline composition, and an optical laminate comprising a substrate, an alignment film formed on the substrate, a liquid crystal layer formed using the liquid crystalline composition on the alignment film are also disclosed.
Public/Granted literature
- US20100119737A1 LIQUID CRYSTALLINE COMPOUND, LIQUID CRYSTALLINE COMPOSITION, OPTICAL FILM, AND OPTICAL LAMINATE Public/Granted day:2010-05-13
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