Nitrogen-containing heterocycles

US5089168A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Joachim Krause · Dieburg, DE
• Rudolf Eidenschink · Mainz, DE
• Klaus Bofinger · Mühltal, DE
• Reinhard Hopf · Lychen, DE
• Volker Reiffenrath · Roßdorf, DE
• Eike Poetsch · Mühltal, DE
• Bernhard Scheuble · Alsbach, DE
• Thomas Geelhaar · Mainz, DE

Key dates

• Filing date: May 16, 1989
• Grant date: Feb 18, 1992
• Expiry date: May 16, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/3441
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Optically active nitrogen-containing heterocycles of the formula I according to claim 1 are suitable as components for ferroelectric liquid crystalline materials.