Fluorinated dyes and their use in electrophoretic display devices

US8119802B2 · kind B2 · utility

Assignees

• BASF SE
• SiPix Imaging, Inc. · US

Inventors

• Nicolle Moonen · Mannheim, DE
• Stephan Hess · Dossenheim, DE
• Jianqiang Qu · Shanghai, CN
• Markus Hoffmann · Wolfschlugen, DE
• Ying-Syi Li · Fremont, US
• Jin Yang · Pleasanton, US
• Gerhard Wagenblast · Wachenheim, DE
• Alfred Rennig · Oberndorf am Neckar, DE
• Thomas Gessner · Ypsilanti, US
• Helmut Reichelt · Neustadt, DE
• Patrick Amrhein · Hochheim, DE

Key dates

• Filing date: Aug 29, 2007
• Grant date: Feb 21, 2012
• Expiry date: Apr 11, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/167
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to process for preparing fluorinated dyes selected from the group consisting of compounds of the general formulae (I) and (III) and mixtures thereof by reacting the corresponding compounds which do not have R12 or R30 as substituents with compounds of the general formula R12A or R30A where A is selected from the group consisting of I and Br, the compounds obtained from said process and the use of these fluorinated dyes in electrophoretic displays.