发明授权
- 专利标题: Thermochromic esters
- 专利标题(中): 热变性糖
-
申请号: US378517申请日: 1989-06-19
-
公开(公告)号: US5130049A公开(公告)日: 1992-07-14
- 发明人: Ian C. Sage , Robert W. Clemitson
- 申请人: Ian C. Sage , Robert W. Clemitson
- 申请人地址: DEX Darmstadt
- 专利权人: Merck Patent Gesellschaft mit beschrankter Haftung
- 当前专利权人: Merck Patent Gesellschaft mit beschrankter Haftung
- 当前专利权人地址: DEX Darmstadt
- 优先权: GBX8811374 19880513
- 主分类号: G02F1/13
- IPC分类号: G02F1/13 ; C07C69/92 ; C09K19/20 ; C09K19/30
摘要:
The invention relates to liquid crystalline compounds of the Formula I ##STR1## wherein R.sup.1, R.sup.2, X.sup.1, X.sup.2, m, and n are as defined herein. Preferably, the group R.sup.2 of the liquid crystalline compounds of Formula I is a chiral residue of the formula II ##STR2## wherein Q denotes an alkylene residue with up to 7 C atoms wherein one CH.sub.2 group may be replaced by --O--, --CO--O--, or --O--CO--, or a single bond; andY denotes an alkyl residue with 2 to 7 C atoms wherein one CH.sub.2 group may be replaced by --O--, --CO--O--, or --O--CO--.The invention further relates to liquid crystal phases containing compounds of the Formula I, to electro-optic and thermographic devices, and to a method of surface thermography.
公开/授权文献
信息查询