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:
May. 13, 2008
Filed:
Dec. 26, 2006
Yuriko Kaida, Koriyama, JP;
Hiromichi Nagayama, Koriyama, JP;
Hiroshi Kumai, Koriyama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To provide a novel compound which satisfies characteristics required for an optical anisotropic material and which is excellent in durability against blue laser light, a liquid crystal composition containing the compound and an optical anisotropic material employing the liquid crystal composition. A compound represented by the following formula (1):CH═CR—COO-(E)-Cy-Y-Cy-E-R  (1)provided that the symbols in the formula have the following meanings. R: a hydrogen atom or a methyl group; R: a Calkyl group; Y: —OCO— or —COO—; m: 0 or 1; Eand E: each independently a 1,4-phenylene group or a trans-1,4-cyclohexylene group; and Cy: a trans-1,4-cyclohexylene group; provided that the above 1,4-phenylene group and the trans-1,4-cyclohexylene group may be such that a hydrogen atom in each group may be substituted by a fluorine atom, a chlorine atom or a methyl group.