Smectic liquid-crystalline phases

US5055221A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Bernhard Scheuble · Alsbach, DE
• Klaus Bofinger · Mühltal, DE
• Reinhard Hopf · Lychen, DE
• Axel Pausch · Seeheim-Jugenheim, DE
• Rudolf Eidenschink · Mainz, DE
• Joachim Krause · Dieburg, DE
• Andreas Wachtler · Griesheim, DE

Key dates

• Filing date: Jun 5, 1989
• Grant date: Oct 8, 1991
• Expiry date: Jun 5, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/3458
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula I, EQU R.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --[Z.sup.2 --A.sup.3 ].sub.m --R.sup.2 I in which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, Z.sup.1, Z.sup.2 and m have the meaning specified in patent claim 1, are suitable as components of smectic liquid-crystalline phases.