JPS55157676A - Composition for liquid crystal color display element - Google Patents

Composition for liquid crystal color display element

Info

Publication number
JPS55157676A
JPS55157676A JP6399679A JP6399679A JPS55157676A JP S55157676 A JPS55157676 A JP S55157676A JP 6399679 A JP6399679 A JP 6399679A JP 6399679 A JP6399679 A JP 6399679A JP S55157676 A JPS55157676 A JP S55157676A
Authority
JP
Japan
Prior art keywords
composition
color display
dye
liquid crystal
display element
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
JP6399679A
Other languages
Japanese (ja)
Other versions
JPS6147193B2 (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 JP6399679A priority Critical patent/JPS55157676A/en
Priority to US06/129,315 priority patent/US4360447A/en
Priority to CH203180A priority patent/CH643290A5/en
Priority to GB8008667A priority patent/GB2051114B/en
Priority to DE19803009974 priority patent/DE3009974A1/en
Priority to FR8005873A priority patent/FR2451393A1/en
Publication of JPS55157676A publication Critical patent/JPS55157676A/en
Priority to US06/405,267 priority patent/US4473486A/en
Publication of JPS6147193B2 publication Critical patent/JPS6147193B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: The title composition, usable for a color display on a watch or electronic calculator by the guest-host method, having improved coloring property, dichromatic ratio and durability, and comprising a specific anthraquinone dye and nematic liquid crystals.
CONSTITUTION: A composition comprising (A) an anthraquinone dye of formula I [X and Y are amino or hydroxy groups; Z is methoxy, formula II or III [R1 is H, halogen atom or 1W15C (branched) alkyl group] or -NH-R2 [R2 is 1W15C (branched) alkyl group)] and (B) nematic liquid crystals, e.g. a mixture of 4- cyano-4'-n-pentylbiphenyl with 4-cyano-4'-n-propoxybiphenyl. The amount of (A) is preferably 0.1W3% based on (B). The dye (A) is obtained by recrystallizing a crude dye prepared from phenol and 1-amino-2-bromo-4-hydroxyanthraquinone from an organic solvent.
COPYRIGHT: (C)1980,JPO&Japio
JP6399679A 1979-03-16 1979-05-25 Composition for liquid crystal color display element Granted JPS55157676A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP6399679A JPS55157676A (en) 1979-05-25 1979-05-25 Composition for liquid crystal color display element
US06/129,315 US4360447A (en) 1979-03-16 1980-03-11 Composition for liquid crystal color display elements
CH203180A CH643290A5 (en) 1979-03-16 1980-03-14 MIXTURE FOR COLOUR indicating, nematic liquid-INDICATORS.
GB8008667A GB2051114B (en) 1979-03-16 1980-03-14 Composition for liquid crystal colour display elements
DE19803009974 DE3009974A1 (en) 1979-03-16 1980-03-14 COMPOSITION FOR LIQUID CRYSTAL COLOR DISPLAY ELEMENTS
FR8005873A FR2451393A1 (en) 1979-03-16 1980-03-17 COMPOSITION FOR LIQUID CRYSTAL COLOR DISPLAY ELEMENTS
US06/405,267 US4473486A (en) 1979-03-16 1982-08-04 Composition for liquid crystal color display elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6399679A JPS55157676A (en) 1979-05-25 1979-05-25 Composition for liquid crystal color display element

Publications (2)

Publication Number Publication Date
JPS55157676A true JPS55157676A (en) 1980-12-08
JPS6147193B2 JPS6147193B2 (en) 1986-10-17

Family

ID=13245379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6399679A Granted JPS55157676A (en) 1979-03-16 1979-05-25 Composition for liquid crystal color display element

Country Status (1)

Country Link
JP (1) JPS55157676A (en)

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
JPS5738876A (en) * 1980-08-21 1982-03-03 Mitsubishi Chem Ind Ltd Liquid crystal composition
JPS57117581A (en) * 1981-01-12 1982-07-22 Sumitomo Chem Co Ltd Liquid crystal display element

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
JPS5738876A (en) * 1980-08-21 1982-03-03 Mitsubishi Chem Ind Ltd Liquid crystal composition
JPS57117581A (en) * 1981-01-12 1982-07-22 Sumitomo Chem Co Ltd Liquid crystal display element

Also Published As

Publication number Publication date
JPS6147193B2 (en) 1986-10-17

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