[EN] PARTICLES FOR ELECTROPHORETIC DISPLAYS<br/>[FR] PARTICULES POUR ÉCRANS D'AFFICHAGE ÉLECTROPHORÉTIQUES
申请人:MERCK PATENT GMBH
公开号:WO2012019704A1
公开(公告)日:2012-02-16
This invention relates to coloured polymer particles preferably with surface functionality for charge retention, a process for their preparation, the use of these particles for the preparation of an electrophoretic device, colour electrophoretic displays comprising such particle, and new polymerisable dyes.
Triphenodioxazine dyes which, in the free acid form, have the formula: ##STR1## wherein A is Cl or Br; Y is cyclopentylene, cyclohexylene or (CH.sub.2).sub.x where x is 2, 3 or 4; and Z is NRCO.sub.2 R.sup.1 or ##STR2## wherein R is H, optionally substituted alkyl or optionally substituted aryl; R.sup.1 is optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl; and R.sup.2 is --CH.dbd.CH--,--CH.dbd.CH--CH.sub.2 --,--(CH.sub.2)--.sub.2-4 or a 1,2-radical of a 5 or 6 membered carbocyclic compound; or, when Y is cyclopentylene or cyclohexylene, Z may also be H or alkyl, alkoxy, aryl, aryloxy, cycloalkyl, cycloalkoxy or amino, all of which may be optionally substituted.
This invention relates to coloured polymer particles preferably with surface functionality for charge retention, a process for their preparation, the use of these particles for the preparation of an electrophoretic device, colour electrophoretic displays comprising such particle, and new polymerisable dyes.
Triphenodioxazine dyes which, in the free acid form, have the formula:
wherein A is Cl or Br;
Y is cyclo pentylene, cyclohexylene or (CH2)x where x is 2, 3 or 4; and
Z is NRCO2R1 or
wherein R is H, optionally substituted alkyl or optionally substituted aryl;
R' is optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl; and
R2 is CH=CH-, CH=CH-CH2-, (CH2)-2-4 or a 1,2-radical of a 5 or 6 membered carbocyclic compound;
or, when Y is cyclopentylene or cyc/ohexylene, Z may also be H or alkyl, alkoxy, aryl, aryloxy, cycloalkyl, cycloalkoxy or amino, all of which may be optionally substituted.
游离酸形式的三苯并二噁嗪染料,其化学式为
其中 A 是 Cl 或 Br;
Y 是环戊烯、环己烯或 (CH2)x,其中 x 是 2、3 或 4;以及
Z 是 NRCO2R1 或
其中 R 是 H、任选取代的烷基或任选取代的芳基;
R' 是任选取代的烷基、任选取代的环烷基或任选取代的芳基;以及
R2 是 CH=CH-、CH=CH-CH2-、(CH2)-2-4 或 5 或 6 位碳环化合物的 1,2-自由基;
或者,当 Y 为环戊烯或环/己烯时,Z 也可以是 H 或烷基、烷氧基、芳基、芳氧基、环烷基、环烷氧基或氨基,所有这些都可以是任选取代的。