EP0035155A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Trans-4"-alkylcyclohexyl esters of 4'-(2-methylbutyl)-4-biphenylcarboxylic acid and liquid crystal compositions containing same
Assignee: JNC Corp
•
Filing: 1981-02-16
•
Granted: —
•
Expires: 2001-02-16
Abstract
Abstract Novel liquid crystal compounds having broader and preferable liquid crystal temperature ranges and liquid crystal compositions containing same are provided. Their optical active substances form a cholesteric liquid crystal, while their racemic substances form a nematic liquid crystal. The compounds are trans-4"-alkylcyclohexyl esters of 4'-(2-methyl-butyl)-4-biphenylcarboxylic acid expressed by the general formula wherein R represents a straight chain alkyl group having 1 to 10 carbon atoms, and the symbol * represents an asymmetric carbon atom.
Inventors
- 👤 Takashi Inukai
- 👤 Kenji Furukawa
- 👤 Shigeru Sugimori
- 👤 Hideo Sato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:08
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068; C09K19/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
34 words
Trans-4"-alkylcyclohexyl esters of 4'-(2-methyl -butyl)-4-biphenylcarboxylic acid expressed by the general formula wherein R represents a straight chain alkyl group having 1 to 10 carbon atoms, and the symbol * represents an asymmetric carbon atom.
Claim 2
Dependent Claim
34 words
Trans-4"-alkylcyclohexyl esters of 4'-(2-methyl -butyl)-4-biphenylcarboxylic acid expressed by the general formula wherein R represents a straight chain alkyl group having 1 to 10 carbon atoms, and the symbol * represents an asymmetric carbon atom.
Claim 3
Dependent Claim
32 words
Compounds according to claim 1 which are optical active substances based on the asymmetric carbon atom having a symbol * attached in said formula (I) and exhibit a cholesteric liquid crystal phase.
Claim 4
Dependent Claim
29 words
Compounds according to claim 1 which are racemic substances based on the asymmetric carbon atom having a symbol * attached in said formula (I) and exhibit a nematic phase.
Claim 5
Dependent Claim
23 words
Liquid crystal compositions for display elements, obtained by adding compound(s) of said formula (I) of claim 1 to other nematic liquid crystal substances.
References Cited (Backward Citations)
GB1456359A
Cited
GB2015510A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.