Acrylic acid derivative compounds and polymeric liquid crystal obtained by polymerizing the same
申请人:Asahi Glass Company, Limited
公开号:US06562259B1
公开(公告)日:2003-05-13
The present invention provides a photopolymerizable liquid crystal monomer having high durability, a low melting point and an enantiotropic property.
The photopolymerizable liquid crystal monomer is a 4-(4-(alkyloxycarbonyloxy)benzoyloxy)phenyl acrylate represented by the following formula A [wherein Ph is a 1,4-phenylene group, and R is an alkyl group]:
CH2═CHCOO—Ph—OCO—Ph—OCOO—R Formula A
Further, the present invention provides a polymer liquid crystal obtained by polymerizing a composition containing the monomer.
Further, the present invention provides an optical element employing the polymer liquid crystal, and an optical head employing the optical element as a polarizing hologram element.