Spiro[3.3] heptyl-dioxan derivatives and their use in liquid crystal media

US7691456B2 · kind B2 · utility

Assignee

• Merck Patentgesellschaft · DE

Inventors

• Lars Lietzau · Darmstadt, DE
• Werner Binder · Dieburg, DE
• Melanie Klasen-Memmer · Heuchelheim, DE
• Eike Poetsch · Mühltal, DE
• Markus Czanta · Darmstadt, DE

Key dates

• Filing date: Oct 11, 2006
• Grant date: Apr 6, 2010
• Expiry date: Oct 11, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to novel dioxane derivatives of the formula R1-(A1-Z1)m-G-(Z2-A2)n-R2, in which G denotes (I) or (II), and in which R1, R2, A1, A2, Z1, Z2, m and n have the meanings indicated in claim 1, to the use thereof as component(s) of liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.