公开(公告)号：US06174458B1

公开(公告)日：2001-01-16

申请号：US09242921

申请日：1999-02-26

申请人： Koji Koga ,  Tsugumichi Ando ,  Hiroyuki Takeuchi ,  Shuichi Matsui ,  Kazutoshi Miyazawa ,  Norihisa Hachiya ,  Etsuo Nakagawa

发明人： Koji Koga ,  Tsugumichi Ando ,  Hiroyuki Takeuchi ,  Shuichi Matsui ,  Kazutoshi Miyazawa ,  Norihisa Hachiya ,  Etsuo Nakagawa

IPC分类号： C09K1930

CPC分类号： C07C17/12 ,  C07C17/263 ,  C07C17/35 ,  C07C17/354 ,  C07C25/18 ,  C07C25/24 ,  C07C43/1742 ,  C07C43/192 ,  C07C43/225 ,  C07C2601/14 ,  C09K19/30 ,  C09K19/3001 ,  C09K19/3003 ,  C09K19/3028

摘要： A tetracyclic compound expressed by the following general formula (1) wherein H1 to H12 represent hydrogen atom at least one of which is replaced by a halogen atom, when either H6 or H8 is replaced by a halogen atom, at least one of the remaining hydrogen atoms is replaced by a halogen atom; R1 and Y1 independently represent an alkyl group, alkoxy group, or alkoxyalkyl group having 1 to 20 carbon atoms, or an alkenyl group having 2 to 20 carbon atoms, one or more methylene group in R1 and Y1 may be replaced by oxygen atom, sulfur atom, dihydrosilylene group, dimethylsilylene group, —CH═CH—, or —C≡C—; and X1, X2, and X3 independently represent a covalent bond, 1,2-ethylene group, or 1,4-butylene group; and a novel liquid crystal composition comprising the tetracyclic compound and having, at the same time, a wide temperature range of a nematic phase, high optical anisotropy, and high chemical stability.

摘要翻译： 由以下通式（1）表示的四环化合物，其中H 1至H 12表示氢原子，其中至少一个被卤素原子代替，当H 6或H 8被卤素原子替代时，至少一个剩余的氢 原子被卤素原子取代; R1和Y1独立地表示烷基，烷氧基或碳原子数1〜20的烷氧基烷基或碳原子数2〜20的烯基，R1和Y1中的一个以上的亚甲基可以被氧原子，硫 原子，二氢亚苯基，二甲基亚甲硅基，-CH = CH-或-C = C-; X1，X2和X3独立地表示共价键，1,2-亚乙基或1,4-亚丁基; 以及包含四环化合物并且同时具有宽的向列相温度范围，高光学各向异性和高化学稳定性的新型液晶组合物。