发明授权
- 专利标题: Liquid crystal mixtures
- 专利标题(中): 液晶混合物
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申请号: US279493申请日: 1981-07-01
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公开(公告)号: US4395350A公开(公告)日: 1983-07-26
- 发明人: Arthur Boller , Alfred Germann , Martin Schadt , Alois Villiger
- 申请人: Arthur Boller , Alfred Germann , Martin Schadt , Alois Villiger
- 申请人地址: NJ Nutley
- 专利权人: Hoffmann-La Roche Inc.
- 当前专利权人: Hoffmann-La Roche Inc.
- 当前专利权人地址: NJ Nutley
- 优先权: CHX5299/80 19800710; CHX2966/81 19810507
- 主分类号: C09B1/503
- IPC分类号: C09B1/503 ; C09B29/08 ; C09B29/12 ; C09B31/043 ; C09B31/062 ; C09B43/28 ; C09K19/60 ; C09K3/34 ; G02F1/13
摘要:
Liquid crystal mixtures containing a coloring substance which comprise about 5 to about 40 weight % of trans-p-[5-(4-alkylcyclohexyl)-2-pyrimidinyl]benzonitriles, about 10 to about 60 weight % of trans-4-alkylcyclohexane carboxylic acid phenyl esters and about 0.1 to about 15 weight % of one or more coloring substances of the formula ##STR1## wherein m stands for the number 1 and X is alkoxy and Y is nitro; or m stands for the number 1 or 2; and X is p-alkoxyphenyl and Y is nitro or dialkylamino, or X is alkoxy and Y is -p-nitrophenyl or -(dialkylamino)phenyl; or m stands for the number 2, and X is alkoxy and Y is alkoxy, nitro or dialkylamino, or both X and Y are dialkylamino; and wherein the alkoxy denotes a straight-chain group containing 1 to 12 carbon atoms and the alkyl groups in the dialkylamino each denote a straight-chain alkyl group containing 1 to 4 carbon atoms are described.
公开/授权文献
- US5585506A One phase production of polyglycerol esters 公开/授权日:1996-12-17