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JPS55155083A - Liquid crystal color display composition - Google Patents

Liquid crystal color display composition

Info

Publication number
JPS55155083A
JPS55155083A JP6271379A JP6271379A JPS55155083A JP S55155083 A JPS55155083 A JP S55155083A JP 6271379 A JP6271379 A JP 6271379A JP 6271379 A JP6271379 A JP 6271379A JP S55155083 A JPS55155083 A JP S55155083A
Authority
JP
Japan
Prior art keywords
liquid crystal
cyano
amino
nematic liquid
color display
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.)
Granted
Application number
JP6271379A
Other languages
Japanese (ja)
Other versions
JPS6147192B2 (en
Inventor
Isao Nishizawa
Ryoichi Morinaka
Ryoichi Tsukahara
Tsuneo Hidaka
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals 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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP6271379A priority Critical patent/JPS55155083A/en
Publication of JPS55155083A publication Critical patent/JPS55155083A/en
Publication of JPS6147192B2 publication Critical patent/JPS6147192B2/ja
Granted legal-status Critical Current

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  • Liquid Crystal (AREA)

Abstract

PURPOSE: Titled composition suited for use in electronic calculator comprising a nematic liquid crystal and a specific, anthraquinone type, dichromatic dye which has excellent durability and which, in a small amount, exhibits satisfactory coloring power.
CONSTITUTION: Titled composition is obtained by mixing (a) an anthraquinone type dischromatic dye expressed by structural formula II, (wherein R is a linear or branched 1W15C alkyl or a cyclohexyl, and X is H or amino), and prepared by reacting, with heating, in an inert solvent, 3-amino-1,2-dihydroxyanthraquinone with a compound represented by formula I, (wherein R is the same as above); nitrating the resulting compound; and reducing the nitrated compound with a reducing agent such as sodium hydrosulfide or sodium hydrosulfite, with (b) a nematic liquid crystal such as one consisting mainly of 4-cyano-4'-n-pentylbiphenyl or 4-cyano-4'-n-propoxybiphenyl.
COPYRIGHT: (C)1980,JPO&Japio
JP6271379A 1979-05-23 1979-05-23 Liquid crystal color display composition Granted JPS55155083A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6271379A JPS55155083A (en) 1979-05-23 1979-05-23 Liquid crystal color display composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6271379A JPS55155083A (en) 1979-05-23 1979-05-23 Liquid crystal color display composition

Publications (2)

Publication Number Publication Date
JPS55155083A true JPS55155083A (en) 1980-12-03
JPS6147192B2 JPS6147192B2 (en) 1986-10-17

Family

ID=13208238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6271379A Granted JPS55155083A (en) 1979-05-23 1979-05-23 Liquid crystal color display composition

Country Status (1)

Country Link
JP (1) JPS55155083A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162773A (en) * 1981-03-31 1982-10-06 Nec Corp Dye-liquid crystal mixture used for color liquid crystal display element
JPS57190048A (en) * 1981-05-16 1982-11-22 Nippon Kanko Shikiso Kenkyusho:Kk Color liquid crystal material using anthraquinone dye
FR2542323A1 (en) * 1983-03-08 1984-09-14 Mitsui Toatsu Chemicals ANTHRAQUINONIC DICHROIC DYES AND LIQUID CRYSTAL COMPOSITION FOR COLOR DISPLAY CONTAINING SAME
EP1423749A2 (en) * 2001-09-04 2004-06-02 Wisconsin Alumni Research Foundation Liquid crystal switching mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0326393Y2 (en) * 1986-06-24 1991-06-07

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162773A (en) * 1981-03-31 1982-10-06 Nec Corp Dye-liquid crystal mixture used for color liquid crystal display element
JPS57190048A (en) * 1981-05-16 1982-11-22 Nippon Kanko Shikiso Kenkyusho:Kk Color liquid crystal material using anthraquinone dye
JPS6315959B2 (en) * 1981-05-16 1988-04-06 Nippon Kanko Shikiso Kenkyusho Kk
FR2542323A1 (en) * 1983-03-08 1984-09-14 Mitsui Toatsu Chemicals ANTHRAQUINONIC DICHROIC DYES AND LIQUID CRYSTAL COMPOSITION FOR COLOR DISPLAY CONTAINING SAME
EP1423749A2 (en) * 2001-09-04 2004-06-02 Wisconsin Alumni Research Foundation Liquid crystal switching mechanism
EP1423749A4 (en) * 2001-09-04 2005-12-21 Wisconsin Alumni Res Found Liquid crystal switching mechanism

Also Published As

Publication number Publication date
JPS6147192B2 (en) 1986-10-17

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