Liquid-crystalline nematic organosiloxanes which can be crosslinked to form optically anisotropic polymer layers

US6300454A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Eckhard Hanelt · Geltendorf, DE
• Frank Sandmeyer · Altötting, DE
• Norman Haberle · Munich, DE

Key dates

• Filing date: Jul 20, 1999
• Grant date: Oct 9, 2001
• Expiry date: Jul 20, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/133788
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to nematic organosiloxanes (F) having at least two mesogenic side groups, of which at most one has three nuclei and all the others have two nuclei, where the term nucleus is taken to mean a six-membered ring or a bicyclic structure consisting of six-membered rings, and where at least one of the mesogenic side groups contains a methacryloyl or acryloyl group.