发明授权
- 专利标题： Optically active ester derivatives, preparation process thereof, liquid crystal materials and a light switching element
- 专利标题（中）： 光学活性酯衍生物，其制备方法，液晶材料和光开关元件
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申请号： US398984申请日： 1989-08-28
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公开(公告)号： US5124070A公开(公告)日： 1992-06-23
- 发明人: Takayuki Higashii , Isao Kurimoto , Shoji Toda , Masayoshi Minai , Takeshi Tani , Chizu Kawakami , Koichi Fujisawa , Kiyoshi Imamura
- 申请人： Takayuki Higashii , Isao Kurimoto , Shoji Toda , Masayoshi Minai , Takeshi Tani , Chizu Kawakami , Koichi Fujisawa , Kiyoshi Imamura
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX63-215986 19880829; JPX63-217189 19880830; JPX63-223853 19880906; JPX63-248671 19880929; JPX63-249529 19881003
- 主分类号： C07C43/178
- IPC分类号： C07C43/178 ; C07C49/84 ; C07C65/21 ; C07C69/773 ; C09K19/20
摘要：
Disclosed are herein optically active ester derivatives represented by the formula (I): ##STR1## (wherein R.sub.1 represents an alkyl group having 3 to 20 carbon atoms; R.sub.2 represents an optically active alkyl or alkoxyalkyl group having 3 to 15 carbon atoms optionally substituted by halogen atoms; Y represents --O--, --COO-- or --OCO--; X represents --COO-- or --OCO--; l represents a number of 1 or 2; k and m each represents a number of 0 or 1; n represents a number of 1 to 6), preparation processes therefor, liquid crystal materials containing such ester derivatives as active ingredient, and a light switching element using said liquid crystal materials as liquid crystal element.
公开/授权文献
- US5546071A Concealed security system 公开/授权日：1996-08-13
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