The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2012
Filed:
Apr. 24, 2008
Kei Sakamoto, Tokyo, JP;
Naoto Kogoshi, Tokyo, JP;
Yoshihide Yachi, Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Abstract
A polymerizable liquid crystal compound shown by the following formula (I), a polymerizable liquid crystal composition that includes the polymerizable liquid crystal compound and a chiral compound polymerizable with the polymerizable liquid crystal compound, a liquid crystalline polymer obtained by polymerizing the polymerizable liquid crystal compound or the polymerizable liquid crystal composition, and an optical anisotropic article that includes the liquid crystalline polymer. The polymerizable liquid crystal compound shows a liquid crystal phase over a wider temperature range, is chemically stable, can be inexpensively produced, and has a wide selective reflection wavelength band Δλ (i.e., a large value Δn). The polymerizable liquid crystal composition includes the polymerizable liquid crystal compound, the liquid crystalline polymer is obtained by polymerizing the polymerizable liquid crystal compound or the polymerizable liquid crystal composition, and the optical anisotropic article includes the liquid crystalline polymer. wherein Yto Yrepresent —O—, —O—C(═O)—, —C(═O)—O—, or the like, Gand Grepresent divalent aliphatic groups having 1 to 20 carbon atoms, Zand Zrepresent an alkenyl group having 2 to 10 carbon atoms or the like, Aand Arepresent divalent organic groups A having 1 to 30 carbon atoms, Xto Xrepresent a hydrogen atom or the like, and a and b represent 0 or 1.