发明授权
- 专利标题： Optically active carboxylic acid derivatives and liquid crystalline compositions comprising them
- 专利标题（中）： 包含它们的光学活性羧酸衍生物和液晶组合物
-
申请号： US210375申请日： 1988-06-23
-
公开(公告)号： US4911862A公开(公告)日： 1990-03-27
- 发明人: Tadao Shoji , Sadao Takehara , Toru Fujisawa , Masashi Osawa , Hiroshi Ogawa , Yoshi Arai , Jitsuo Kurokawa
- 申请人： Tadao Shoji , Sadao Takehara , Toru Fujisawa , Masashi Osawa , Hiroshi Ogawa , Yoshi Arai , Jitsuo Kurokawa
- 申请人地址： JPX Tokyo JPX Saitama
- 专利权人： Dainippon Ink and Chemicals, Inc.,Kawamura Institute of Chemical Research
- 当前专利权人： Dainippon Ink and Chemicals, Inc.,Kawamura Institute of Chemical Research
- 当前专利权人地址： JPX Tokyo JPX Saitama
- 优先权： JPX61-18014 19860131; JPX61-78178 19860407; JPX61-139249 19860617; JPX61-140157 19860618
- 主分类号： C07C69/773
- IPC分类号： C07C69/773 ; C09K19/12 ; C09K19/20
摘要：
An optically active carboxylic acid derivative represented by the general formula ##STR1## wherein R represents a normal alkyl group having 1 to 20 carbon atoms, m and n represent 0 or 1 but are not 1 at the same time, X represents a hydrogen or halogen atom, Y represents a hydrogen or fluorine atom, provided that when Y is a hydrogen atom, X is a halogen atom, and that when n is 0, Y is a hydrogen atom, and Q* represents an optically active alkyl or 1-alkoxyethyl group having an asymmetric carbon atom.
公开/授权文献
- US4410486A Nuclear reactor with a liquid coolant 公开/授权日：1983-10-18
信息查询
