Invention Grant
- Patent Title: Encapsulated dispersions comprising electrophoretically mobile organic colorants
- Patent Title (中): 包含电泳移动有机着色剂的包封分散体
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Application No.: US12676765Application Date: 2008-08-28
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Publication No.: US08270063B2Publication Date: 2012-09-18
- Inventor: Margherita Fontana , Gerardus De Keyzer , Philippe Bugnon , Marcel Hahn , Kishor Kumar Mistry , Clemens Auschra
- Applicant: Margherita Fontana , Gerardus De Keyzer , Philippe Bugnon , Marcel Hahn , Kishor Kumar Mistry , Clemens Auschra
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP07115939 20070907
- International Application: PCT/EP2008/061266 WO 20080828
- International Announcement: WO2009/030628 WO 20090312
- Main IPC: G02B26/00
- IPC: G02B26/00 ; G03G17/04 ; G09G3/34 ; G02F1/133

Abstract:
The invention relates to an electrophoretic display, comprising electrodes and cells containing at least one kind of ionic, monochrome particles, a non-polar liquid and a dispersant, wherein the ionic, monochrome particles of at least one kind are essentially aggregates consisting of a carbon containing pigment and a cationic pigment orcationic pigment derivative, and the dispersantis selected from the group consisting of polyacrylates, polyesters, polyurethanes and copolymers, with the proviso that the cationic pigment or cationic pigment derivative is not a reaction product of carbonblack with diazotated procaine hydrochloride. In general, the whole quantity of the pigment and the main part, preferably at least 80%, most preferred from 95% to 100%, of the whole cationic pigment or cationic pigment derivative present within the cells is comprised in the aggregates, with essentially no pigment and only a minor part of the cationic pigment or cationic pigment derivative physically distinct from the aggregates.
Public/Granted literature
- US20100290103A1 ENCAPSULATED DISPERSIONS COMPRISING ELECTROPHORETICALLY MOBILE ORGANIC COLORANTS Public/Granted day:2010-11-18
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