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US 10,344,167 B2Granted
Particles for electrophoretic displays
AssigneesMerck Patent GmbH, The Queen's University of Belfast
InventorsJonathan Henry Wilson, Louise Diane Farrand, Anthony Lawrence, Sarah Youngs
Life of this patent
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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 polymerizable dyes.
Claims21
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 at least one polymerisable dye is selected of Formula (3):
- wherein
- 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;
- L1 and L2 are independently of one another linear or branched, substituted or unsubstituted alkylene groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N;
- Y1 and Y2 are independently of one another linear or branched alkyl groups or polymerisable groups;
- and wherein at least one of Y1 and Y2 is a polymerisable group.
3 more elements
Dependencies are inferred from the claim text.