Particles for electrophoretic displays
AssigneesMerck Patent GmbH, The Queen's University of Belfast
InventorsJonathan Henry WILSON, Louise Diane FARRAND, Anthony LAWRENCE, Sarah NORMAN
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Abstract
This invention relates to polymer particles, a process for their preparation, the use of these particles for the preparation of an electrophoretic device, electrophoretic displays comprising such particle, and new polymerisable dyes.
Claims19
-17. (canceled)
Coloured polymer particles for use in electrophoretic devices comprising monomer units of at least one polymerisable dye and at least one co-monomer, wherein the polymerisable dyes are selected of Formula (1)
- wherein
- A is a chromophoric residue comprising at least one polymerisable group;
- R1 and R2 are independently of each other linear or branched, substituted or unsubstituted alkyl, where one or more non-adjacent carbon atoms may be replaced by O, S and/or N, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl;
- R3 and R4 are independently of each other H or linear or branched, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or R3 and R4 forming a cycloaliphatic ring.
The coloured polymer particles according to claim 22, wherein Y is a polymerisable group, L and L′ are a linker group, A and A′ independently of each other are a naphthyl or phenyl ring, y≧1, l and l′=0 or 1, m≧1, n≧0, and a=1.
Dependencies are inferred from the claim text.