Pyrans as liquid crystals

US6974607B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Mark John Goulding · Woodside, GB
• Warren Duffy · Southampton, GB
• Kevin Adlem · Bournemouth, GB
• Peer Kirsch · Darmstadt, DE
• Alexander Hahn · Groß-Gerau, DE
• Eike Poetsch · Mühltal, DE
• Werner Binder · Dieburg, DE
• Volker Meyer · Groß-Zimmern, DE
• Melanie Klasen-Memmer · Heuchelheim, DE
• Michael Heckmeier · Bensheim, DE
• Georg Lüssem · Ober-Ramstadt, DE

Key dates

• Filing date: May 27, 2004
• Grant date: Dec 13, 2005
• Expiry date: Jul 25, 2024

Classification

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

Abstract

Tetrahydropyran derivatives having at least one ester group (—CO—O—) and at least one group —CN, —NCS, —F, —Cl, —OCHF2, —OCF3, —CF3, —OCHFCF3, —OCF2CHFCF3, SF5, or —OCF2CF3; a process for preparing said tetrahydropyran derivatives, and the use of said tetrahydropyran derivatives as a component in a liquid crystal composition.