Polymerizable mixtures

US7396486B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Eckhard Hanelt · Geltendorf, DE
• Thilo Gebhard · Birkenfeld, DE
• Markus Jandke · Altötting, DE

Key dates

• Filing date: Oct 30, 2003
• Grant date: Jul 8, 2008
• Expiry date: May 30, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/03
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A mixture which is polymerizable to polymers exhibiting a high optical anisotropy which is stable during polymerization. The mixture contains a first monomer or (and/or) oligomer having two or more polymerizable functional groups and optionally a mesogenic group; a second monomer or oligomer bearing at least one mesogenic group having an aromatic double ring structure and only one polymerizable group; and from 1 to 50% by weight of a monomer non-polymerizable with the first or second monomer, but which also contains a mesogenic group having an aromatic double ring structure.