Photoalignment composition

US10558089B2 · kind B2 · utility

Assignee

• ROLIC AG · CH

Inventors

• Izabela Bury · Allschwil, CH
• Fabien Xavier Delbaere · Flaxlanden, FR
• Olivier Muller · Ennery, FR
• Joachim Reichardt · Weil am Rhein, DE
• Hubert Seiberle · Lörrach, DE
• Peggy Studer · Buschwiller, FR
• Satish Palika · Zofingen, CH

Key dates

• Filing date: May 23, 2017
• Grant date: Feb 11, 2020
• Expiry date: Oct 7, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24479
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The present invention relates to a photoalignment composition comprising a) 0.001 to 20%, by weight; preferably, 1 to 10% by weight, more preferably 1 to 9% by weight of at least one photoreactive compound (I) that comprises a photoalignment group and b) 80 to 99.999% by weight, preferably, 90 to 99% by weight, more preferably 91 to 99% by weight of at least one compound (II) that does not comprise a photoalignment group, and c) optionally at least one reactive or non reactive additives, and d) optionally at least one solvent. Further, the present invention relates to the use of this photoalignment composition for the alignment of liquid crystals or liquid crystal polymers, in electro-optical and optical elements, systems and devices.