JPS55155082A - Liquid crystal color display composition - Google Patents

Liquid crystal color display composition

Info

Publication number
JPS55155082A
JPS55155082A JP6223379A JP6223379A JPS55155082A JP S55155082 A JPS55155082 A JP S55155082A JP 6223379 A JP6223379 A JP 6223379A JP 6223379 A JP6223379 A JP 6223379A JP S55155082 A JPS55155082 A JP S55155082A
Authority
JP
Japan
Prior art keywords
liquid crystal
cyano
dye
alkyl
anthraquinone
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.)
Pending
Application number
JP6223379A
Other languages
Japanese (ja)
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 JP6223379A priority Critical patent/JPS55155082A/en
Priority to US06/128,713 priority patent/US4304683A/en
Priority to GB8008600A priority patent/GB2051113B/en
Priority to CH203080A priority patent/CH643289A5/en
Priority to DE19803009940 priority patent/DE3009940A1/en
Priority to FR8005872A priority patent/FR2451392B1/fr
Publication of JPS55155082A publication Critical patent/JPS55155082A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: Titled composition suited for use in electronic calculator, comprising a nematic luquid 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 prepared by mixing (a) an anthraquinone type dichromatic dye such as a dye having formula III, expressed by structural formula II, (wherein R1 is a 1W3C alkyl or a group R2-O-R3; R2 is a 1W3C alkylene and R3 is a 1W3C alkyl), and prepared by reacting, in sulfuric acid and in the presence of boric acid, 1,5-diamino-4-8-dihydroxy-anthraquinone-disulfonic acid with a compound represented by formula I, (wherein R1 is the same as above), desulfonating the resulting compound and purifying the desulfonated product, 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
JP6223379A 1979-03-16 1979-05-22 Liquid crystal color display composition Pending JPS55155082A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP6223379A JPS55155082A (en) 1979-05-22 1979-05-22 Liquid crystal color display composition
US06/128,713 US4304683A (en) 1979-03-16 1980-03-10 Composition for liquid crystal color display element
GB8008600A GB2051113B (en) 1979-03-16 1980-03-13 Composition for liquid crystal colour display element
CH203080A CH643289A5 (en) 1979-03-16 1980-03-14 MIXTURE FOR COLOR-DISPLAYING NEMATIC LIQUID CRYSTAL DISPLAY ELEMENTS.
DE19803009940 DE3009940A1 (en) 1979-03-16 1980-03-14 COMPOSITION FOR A LIQUID CRYSTAL COLOR DISPLAY ELEMENT
FR8005872A FR2451392B1 (en) 1979-03-16 1980-03-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6223379A JPS55155082A (en) 1979-05-22 1979-05-22 Liquid crystal color display composition

Publications (1)

Publication Number Publication Date
JPS55155082A true JPS55155082A (en) 1980-12-03

Family

ID=13194229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6223379A Pending JPS55155082A (en) 1979-03-16 1979-05-22 Liquid crystal color display composition

Country Status (1)

Country Link
JP (1) JPS55155082A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161488A (en) * 1980-04-18 1981-12-11 Bayer Ag Liquid crystal substance containing anthraquinone dye
JPS58187454A (en) * 1982-04-27 1983-11-01 Nippon Kayaku Co Ltd Anthraquinone compound

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161488A (en) * 1980-04-18 1981-12-11 Bayer Ag Liquid crystal substance containing anthraquinone dye
JPS58187454A (en) * 1982-04-27 1983-11-01 Nippon Kayaku Co Ltd Anthraquinone compound
JPH026798B2 (en) * 1982-04-27 1990-02-13 Nippon Kayaku Kk

Similar Documents

Publication Publication Date Title
JPS55123673A (en) Liquid crystal color display device
JPS5763377A (en) Liquid crystal composition for color display
JPS5523169A (en) Liquid crystal composition and display elements comprising it
ATE16198T1 (en) ORGANIC COMPOSITIONS USEFUL FOR A GUEST-HOST LIQUID CRYSTAL DISPLAY DEVICE.
JPS5721359A (en) 4'''-cyano-4"-biphenylyl 4-(trans-4'-alkylcyclohexyl)benzoate
JPS56100885A (en) Composition for liquid crystal color display
JPS564677A (en) Composition for liquid crystal color display containing anthraquinone compound
JPS55155082A (en) Liquid crystal color display composition
JPS55155083A (en) Liquid crystal color display composition
JPS5448690A (en) Compound for fluorescent liquid crystal display
JPS5698277A (en) Liquid crystalline composition
JPS5790081A (en) Liquid crystal display device
JPS545886A (en) Liquid crystal composition and liquid crystal indicator comsisting of composition
JPS57108056A (en) 4'-(alkyloxymethyl)-4-cyanobiphenyl
JPS564678A (en) Composition for liquid crystal color display element
JPS5667388A (en) Liquid crystal composition
JPS5630484A (en) Method of color liquid crystal display
JPS57198777A (en) Composition for liquid crystal display
JPS5521417A (en) Liquid crystal display element
JPS5499786A (en) Nematic liquid crystal composition
JPS5670080A (en) Liquid crystal composition
JPS5785879A (en) Liquid crystal display device
JPS55155054A (en) Anthraquinone dye and liquid crystal color displaying device using the same
JPS559665A (en) Liquid crystal composition
JPS55125183A (en) Liquid crystal display device