DE69807371T2 - Verfahren zur Reinigung von Flüssigkristallen - Google Patents

Verfahren zur Reinigung von Flüssigkristallen

Info

Publication number
DE69807371T2
DE69807371T2 DE69807371T DE69807371T DE69807371T2 DE 69807371 T2 DE69807371 T2 DE 69807371T2 DE 69807371 T DE69807371 T DE 69807371T DE 69807371 T DE69807371 T DE 69807371T DE 69807371 T2 DE69807371 T2 DE 69807371T2
Authority
DE
Germany
Prior art keywords
cleaning liquid
liquid crystals
crystals
cleaning
liquid
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.)
Expired - Fee Related
Application number
DE69807371T
Other languages
English (en)
Other versions
DE69807371D1 (de
Inventor
Yasue Yoshioka
Masahiro Johno
Tomoyuki Yui
Takakiyo Mine
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.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Publication of DE69807371D1 publication Critical patent/DE69807371D1/de
Application granted granted Critical
Publication of DE69807371T2 publication Critical patent/DE69807371T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
    • C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/02—Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
    • C09K19/0266—Antiferroelectrics
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/56—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/02—Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
    • C09K19/0225—Ferroelectric
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
    • C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
    • C09K19/2021—Compounds containing at least one asymmetric carbon atom
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—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 liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/141—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 liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
    • C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
    • C09K2019/2042—Ph-Ph-COO-Ph
DE69807371T 1997-03-06 1998-03-03 Verfahren zur Reinigung von Flüssigkristallen Expired - Fee Related DE69807371T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP5162997 1997-03-06
JP23097897 1997-08-27
JP23097997 1997-08-27

Publications (2)

Publication Number Publication Date
DE69807371D1 DE69807371D1 (de) 2002-10-02
DE69807371T2 true DE69807371T2 (de) 2002-12-19

Family

ID=27294377

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69807371T Expired - Fee Related DE69807371T2 (de) 1997-03-06 1998-03-03 Verfahren zur Reinigung von Flüssigkristallen

Country Status (5)

Country Link
US (1) US6056892A (de)
EP (1) EP0863127B1 (de)
KR (1) KR19980079885A (de)
DE (1) DE69807371T2 (de)
TW (1) TW373014B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6501564B1 (en) * 1999-05-07 2002-12-31 Hewlett-Packard Company Tone dependent plane dependent error diffusion halftoning
KR100960580B1 (ko) * 2002-09-26 2010-06-03 디아이씨 가부시끼가이샤 액정 재료를 재이용하기 위한 처리 방법
CN100417982C (zh) * 2005-10-18 2008-09-10 比亚迪股份有限公司 一种生产结存回收混合液晶再利用方法
CN101381604B (zh) * 2008-10-17 2011-08-03 江苏和成化学材料有限公司 液晶单体或液晶组合物的纯化方法
DE102013020400A1 (de) * 2013-12-10 2015-06-11 Merck Patent Gmbh Reinigungsvorrichtung
EP3088426B1 (de) * 2013-12-25 2021-03-24 DIC Corporation Verbindung mit mesogener gruppe und mischung, zusammensetzung sowie optisch anisotroper körper mit dieser verbindung
US9562191B2 (en) * 2015-04-01 2017-02-07 Citizen Finedevice Co., Ltd. Compositions and methods for removing ions from liquid crystal materials

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1433130A (en) * 1972-11-09 1976-04-22 Secr Defence Substituted biphenyl and polyphenyl compounds and liquid crystal materials and devices containing them
JPS5259081A (en) * 1975-11-12 1977-05-16 Hitachi Ltd Method of purifying liquid crystal
US4447655A (en) * 1982-11-24 1984-05-08 General Electric Company Purification of bisphenol-A
US4575412A (en) * 1984-08-28 1986-03-11 Kawasaki Steel Corporation Method for producing a precursor pitch for carbon fiber
US4578177A (en) * 1984-08-28 1986-03-25 Kawasaki Steel Corporation Method for producing a precursor pitch for carbon fiber
JPS61238885A (ja) * 1985-04-16 1986-10-24 Maruzen Sekiyu Kagaku Kk 炭素製品製造用素原料の精製法
JPS63261224A (ja) * 1987-04-17 1988-10-27 Sanyo Electric Co Ltd 液晶注入方法
JPS6448305A (en) * 1987-08-17 1989-02-22 Toshiba Chem Corp Conductive paste
JPS6487685A (en) * 1987-09-29 1989-03-31 Seimi Chem Kk Production of liquid crystal composition of high resistivity
JPH01281421A (ja) * 1988-05-09 1989-11-13 Seiko Epson Corp 液晶パネル
JP2636035B2 (ja) * 1989-02-27 1997-07-30 松下電器産業株式会社 強誘電性液晶組成物および強誘電性液晶表示装置
JPH03164713A (ja) * 1989-11-24 1991-07-16 Semiconductor Energy Lab Co Ltd 強誘電性液晶電気光学装置とその作製方法
US5169977A (en) * 1990-03-15 1992-12-08 Mitsubishi Gas Chemical Company, Inc. Process for purifying dimethyl-2,6-naphthalene dicarboxylate
JP2935195B2 (ja) * 1990-05-07 1999-08-16 カシオ計算機株式会社 液晶中の不純物除去方法
US5422034A (en) * 1992-12-16 1995-06-06 Hitachi Chemical Company, Ltd. Purification of liquid crystals and liquid crystal composition
JPH0772439A (ja) * 1993-09-03 1995-03-17 Toshiba Corp 液晶表示器の製造方法
JPH07181508A (ja) * 1993-12-24 1995-07-21 Showa Denko Kk 液晶注入方法および液晶表示素子
JPH08193193A (ja) * 1995-01-17 1996-07-30 Shin Etsu Chem Co Ltd 液晶化合物の精製方法
JPH08277391A (ja) * 1995-02-10 1996-10-22 Shin Etsu Chem Co Ltd 液晶化合物の精製方法
US5849258A (en) * 1996-06-06 1998-12-15 Intevep, S.A. Material with microporous crystalline walls defining a narrow size distribution of mesopores, and process for preparing same

Also Published As

Publication number Publication date
DE69807371D1 (de) 2002-10-02
EP0863127B1 (de) 2002-08-28
EP0863127A2 (de) 1998-09-09
US6056892A (en) 2000-05-02
EP0863127A3 (de) 1999-08-25
KR19980079885A (ko) 1998-11-25
TW373014B (en) 1999-11-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee