EP2240518A2 - Flüssigkeitszusammensetzung für elektrophoretische farbanzeigen - Google Patents

Flüssigkeitszusammensetzung für elektrophoretische farbanzeigen

Info

Publication number
EP2240518A2
EP2240518A2 EP09710976A EP09710976A EP2240518A2 EP 2240518 A2 EP2240518 A2 EP 2240518A2 EP 09710976 A EP09710976 A EP 09710976A EP 09710976 A EP09710976 A EP 09710976A EP 2240518 A2 EP2240518 A2 EP 2240518A2
Authority
EP
European Patent Office
Prior art keywords
polymer particles
particles
process according
electrophoretic
coloured
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09710976A
Other languages
English (en)
French (fr)
Inventor
Mark John Goulding
Ashley Nathan Smith
Johannes Canisius
Richard Vidal
Sihame Khoukh
Matthias Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck Patent GmbH
Original Assignee
Merck Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH
Priority to EP09710976A priority Critical patent/EP2240518A2/de
Publication of EP2240518A2 publication Critical patent/EP2240518A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium
    • C08F2/22—Emulsion polymerisation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F2001/1678—Constructional details characterised by the composition or particle type

Definitions

  • the black particles typically possess a permanent negative charge and the white particles possess a permanent positive charge.
  • a conducting backplane typically with a patterned electrode structure, typically a direct drive backplane or active matrix TFT backplane, it forms an electrophoretic display element.
  • the object of this invention is to provide electro-optically active media for colour electrophoretic displays with specifically engineered properties and coloured particles for use in such media.
  • the polymerization according to the invention is a free radical polymerization.
  • esters of acrylic and/or methacrylic acid are used, especially, methyl acrylate (MA), ethyl acrylate (EA), n-butyl acrylate (BA), 2-ethylhexyl acrylate, methyl methacrylate (MMA), ethyl methacrylate (EMA), n-butyl methacrylate (BMA).
  • MA methyl acrylate
  • EA ethyl acrylate
  • BA 2-ethylhexyl acrylate
  • MMA methyl methacrylate
  • EMA ethyl methacrylate
  • BMA n-butyl methacrylate
  • styrene-based monomers such as divinylbenzene, divinylether, or compounds comprising at least two acrylic or methacrylic groups. Combination of two or more monomers may be used, too.
  • anionic monomers are monomers as described above, wherein these monomers comprise an anionic functional group, such as a carboxylate group, a sulfate group, or a phosphate group.
  • Preferred compounds are such comprising a carboxylate group.
  • Especially preferred are sodium acrylate (NaA) and sodium-2-methylpropanesulfonate (NaAMPS).
  • an oil soluble initiator is used in the surfactant-free emulsion copolymerisation in order to control size, particle morphology and to reduce the residual monomers at the end of the reaction.
  • examples are azo compounds or peroxide compounds, hydroperoxides or peracid esters.
  • azo compounds are used, especially azobis(isobutylamidine) hydrochloride (AIBA) and similar compounds.
  • the replacing of the ester groups by amino groups after aminolysis is proved by FT-IR analysis.
  • the zeta potential measurements of the polymeric nanoparticles are performed in a water solution of 10 ⁇ 3 mole/l NaCI in accordance with pH variation on Malvern Zetasizer.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Polymerisation Methods In General (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP09710976A 2008-02-11 2009-01-19 Flüssigkeitszusammensetzung für elektrophoretische farbanzeigen Withdrawn EP2240518A2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09710976A EP2240518A2 (de) 2008-02-11 2009-01-19 Flüssigkeitszusammensetzung für elektrophoretische farbanzeigen

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08002487 2008-02-11
PCT/EP2009/000289 WO2009100803A2 (en) 2008-02-11 2009-01-19 Fluid compositions for colour electrophoretic displays
EP09710976A EP2240518A2 (de) 2008-02-11 2009-01-19 Flüssigkeitszusammensetzung für elektrophoretische farbanzeigen

Publications (1)

Publication Number Publication Date
EP2240518A2 true EP2240518A2 (de) 2010-10-20

Family

ID=40361761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09710976A Withdrawn EP2240518A2 (de) 2008-02-11 2009-01-19 Flüssigkeitszusammensetzung für elektrophoretische farbanzeigen

Country Status (3)

Country Link
EP (1) EP2240518A2 (de)
TW (1) TW200951146A (de)
WO (1) WO2009100803A2 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8743451B2 (en) * 2009-02-09 2014-06-03 Merck Patent Gmbh Coloured particles for electrophoretic displays
EP2577392B1 (de) 2010-06-07 2019-06-26 Merck Patent GmbH Farbige polymerpartikel
KR20130087005A (ko) 2010-06-07 2013-08-05 메르크 파텐트 게엠베하 백색 반사 중합체 입자
US9182615B2 (en) * 2010-11-30 2015-11-10 Merck Patent Gmbh Particles for electrophoretic displays
WO2012152392A1 (en) 2011-05-09 2012-11-15 Merck Patent Gmbh Particles for electrophoretic displays
EP2707457B1 (de) 2011-05-09 2015-06-24 Merck Patent GmbH Reaktive polymerteilchen auf mesogenbasis
CN103748153A (zh) * 2011-08-24 2014-04-23 默克专利有限公司 着色聚合物粒子
US9298058B2 (en) 2012-01-24 2016-03-29 Hewlett Packard Development Company, L.P. Multi-stable electronic inks
EP2834705B1 (de) 2012-04-04 2018-12-05 Merck Patent GmbH Partikel für elektrophoretische anzeigen mit einem kern und einer beschichtung aus statistischen copolymeren
WO2013170937A1 (en) 2012-05-14 2013-11-21 Merck Patent Gmbh Particles for electrophoretic displays
KR20150013712A (ko) 2012-05-14 2015-02-05 메르크 파텐트 게엠베하 전기영동 디스플레이용 입자
US9651846B2 (en) 2012-05-14 2017-05-16 Merck Patent Gmbh Particles for electrophoretic displays
EP2864423B1 (de) 2012-06-22 2023-06-07 E Ink Corporation Elektrophoreseflüssigkeit
WO2014019650A1 (en) 2012-08-01 2014-02-06 Merck Patent Gmbh Electrophoretic fluids
WO2014019651A1 (en) 2012-08-01 2014-02-06 Merck Patent Gmbh Electrophoretic fluids
WO2014025743A1 (en) 2012-08-07 2014-02-13 Cornell University Binder free and carbon free nanoparticle containing component, method and applications
KR102160904B1 (ko) 2013-04-12 2020-09-29 메르크 파텐트 게엠베하 전기영동 디스플레이용 입자
EP3008096B1 (de) 2013-06-12 2019-06-26 Merck Patent GmbH Partikel für elektrophoretische anzeigen
US10106686B2 (en) 2013-06-12 2018-10-23 Merck Patent Gmbh Particles for electrophoretic displays
WO2015031340A1 (en) 2013-08-30 2015-03-05 Sun Chemical Corporation Colored fluids for display devices
WO2015030798A1 (en) 2013-08-30 2015-03-05 Hewlett-Packard Development Company, L.P. Electronic inks
US9977309B2 (en) 2013-12-19 2018-05-22 Merck Patent Gmbh Electrophoretic fluid
JP7025839B2 (ja) * 2014-02-13 2022-02-25 メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング 反応性メソゲンベースのポリマー粒子

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6458501B1 (en) * 1999-09-30 2002-10-01 Xerox Corporation Forming a toner using surfactant-free emulsion polymerization
US7230750B2 (en) * 2001-05-15 2007-06-12 E Ink Corporation Electrophoretic media and processes for the production thereof
JP2003277414A (ja) * 2002-03-25 2003-10-02 Soken Chem & Eng Co Ltd 帯電性着色樹脂微粒子、その用途及びその製造方法
JP4517083B2 (ja) * 2003-07-11 2010-08-04 綜研化学株式会社 機能性アクリル系ポリマー定形粒子及びその用途
US7741378B2 (en) * 2005-03-01 2010-06-22 Soken Chemical & Engineering Co., Ltd. Porous monodispersed particles and method for production thereof, and use thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009100803A2 *

Also Published As

Publication number Publication date
WO2009100803A2 (en) 2009-08-20
TW200951146A (en) 2009-12-16
WO2009100803A3 (en) 2009-12-30

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