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Anisotropic compounds and liquid crystal compositions

Assignee: Merck Patent GmbH
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Filing: 1983-01-10
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Granted: —
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Expires: 2003-01-10
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Abstract

Abstract Translated from German Anisotrope Verbindungen mit negativer DK-Anisotropie und verbesserter fotochemischer Beständigkeit haben die in Patentanspruch 1 angegebene Formel (1); dabei ist keiner der im Molekül (1) vorhandenen Benzolringe direkt mit zwei Sauerstoffatomen verbunden, wodurch chinoide Bindungszustände ausgeschlossen sind, die bei Benzolringen mit zwei lateralen Nitrilgruppen die fotochemische Beständigkeit der anisotropen Verbindungen vermindern. Anisotropic compounds with negative DK anisotropy and improved photochemical stability have the formula (1) given in claim 1; none of the benzene rings present in the molecule (1) is directly connected to two oxygen atoms, which eliminates quinoid binding states which reduce the photochemical stability of the anisotropic compounds in benzene rings with two lateral nitrile groups.

Inventors

  • 👤 Tuong Dr. Huynh-Ba
  • 👤 Stephen Malcolm Dr. Kelly
  • 👤 Maged A. Dr. Osman

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 23:13
CPC Classifications
C; C07; C07C; C07C255/00; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/32; C09K19/321

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

GB2027027A Cited
DE2931637A1 Cited
DE2939782A1 Cited
GB2093057A Cited

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