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EP0439190A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Component for liquid crystal composition and liquid crystal composition containing the same

Assignee: Showa Shell Sekiyu KK
•
Filing: 1991-01-25
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Granted: —
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Expires: 2011-01-25
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Abstract

Abstract An optically active compound represented by formula (I): <CHEM> wherein R1 represents a fluoroalkyl group having from 1 to 18 carbon atoms; R2 represents an alkyl group having from 1 to 16 carbon atoms and an aralkyl group having from 6 to 16 carbon atoms; R3 represents C2F5, CF3, CHF2, or CH2F; X represents a single bond, -O-, -COO-, or -OCO-; Y represents -COO-,- -OCO-, -CH2O-, or -OCH2-; Z represents -COO- or -O-; (A) and (B) each represent a cyclic group; and * indicates an optically active center, and a liquid crystal composition containing at least one of said optically active compounds are disclosed. The compound is useful not only as a liquid crystal compound but as a chiral dopant to provide a liquid crystal composition exhibiting a chiral smectic phase.

Inventors

  • 👤 Yoshiichi C/O Showa Shell Sekiyu K.K. Suzuki
  • 👤 Shigenori C/O Showa Shell Sekiyu K.K. Sakuma
  • 👤 Noriko C/O Showa Shell Sekiyu K.K. Yamakawa

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 23:11
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021; C09K19/30; C09K19/3001; C09K19/52; C09K19/58; C09K19/586

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 101 words
A liquid crystal compound or a component for a liquid crystal composition, which is an optically active compound represented by formula (I): wherein R₁ represents a fluoroalkyl group having from 1 to 18 carbon atoms; R₂ represents an alkyl group having from 1 to 16 carbon atoms and an aralkyl group having from 6 to 16 carbon atoms; R₃ represents C₂F₅, CF₃, CHF₂, or CH₂F; X represents a single bond, -O-, -COO-, or -OCO-; Y represents -COO-, -OCO-, -CH₂O-, or -OCH₂-; Z represents -COO- or -O-; (A) and (B) each represent a cyclic group; and * indicates an optically active center.
Claim 2
Dependent Claim 94 words
A liquid crystal composition containing at least one optically active compound represented by formula (I): wherein R₁ represents a fluoroalkyl group having from 1 to 18 carbon atoms; R₂ represents an alkyl group having from 1 to 16 carbon atoms and an aralkyl group having from 6 to 16 carbon atoms; R₃ represents C₂F₅, CF₃, CHF₂, or CH₂F; X represents a single bond, -O-, -COO-, or -OCO-; Y represents -COO-, -OCO-, -CH₂O-, or -OCH₂-; Z represents -COO- or -O-; (A) and (B) each represent a cyclic group; and * indicates an optically active center.

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