Patent · US Active

Coloured particles for electrophoretic displays

US8456733B2 · kind B2 · utility

3Cited by

3References

20Claims

0Family size

Assignee

BASF SE

Inventors

Margherita Fontana · Basel, CH
Gabriele Baisch · Binzen, DE
Thomas Giesenberg · Oberwil, CH
Laurent Michau · Pfetterhouse, FR
Reinhold Öhrlein · Rheinfelden (Baden), DE
Andreas Muhlebach · Belfaux, CH

Key dates

Filing date	Oct 16, 2006
Grant date	Jun 4, 2013
Priority date	—
Expiry date	Jul 13, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2004/64
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention discloses the use of functionalized particles as electrophoretic displaying particles, wherein the functionalized particles are SiO2, Al2O3 or mixed SiO2 and Al2O3 particles comprising, covalently bound to an oxygen atom on the surface, a radical of formula (1), wherein R1 and R2 are independently of each other hydrogen, particle surface-O—, or a substituent, n is 1, 2, 3, 4, 5, 6, 7 or 8, B is the direct bond or a bridge member, and D is the residue of an organic chromophore.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.