JPS57198777A - Composition for liquid crystal display - Google Patents

Composition for liquid crystal display

Info

Publication number
JPS57198777A
JPS57198777A JP8245281A JP8245281A JPS57198777A JP S57198777 A JPS57198777 A JP S57198777A JP 8245281 A JP8245281 A JP 8245281A JP 8245281 A JP8245281 A JP 8245281A JP S57198777 A JPS57198777 A JP S57198777A
Authority
JP
Japan
Prior art keywords
liquid crystal
composition
alk
cyano
halogen
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
JP8245281A
Other languages
Japanese (ja)
Other versions
JPS641000B2 (en
Inventor
Yasuyuki Yamada
Tadaaki Tanaka
Ryoichi Tsukahara
Isao Nishizawa
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 JP8245281A priority Critical patent/JPS57198777A/en
Publication of JPS57198777A publication Critical patent/JPS57198777A/en
Publication of JPS641000B2 publication Critical patent/JPS641000B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE: To provide a composition for a liquid crystal color display, having excellent light resistance, and exhibiting clear reddish violet color and extremely good dichroism, by dissolving a dichroic dye composed of an anthraquinone compound having a specific structural formula in a liquid crystal.
CONSTITUTION: The objective composition is obtained by dissolving (A) a dichroic dye composed of an anthraquinone compound of formula (R1 is amino or OH; R2 and R3 are H, amino, OH, nitro, etc.; Alk is halogen, cyano, phenyl, etc.; R4 is H, halogen, 1W4C alkyl, or Alk; x is halogen or 1W4C alkyl; m is 1 or 2; n is 0, 1 or 2; m+n≥2) (preferably the compound wherein R1 is amino, R2, R3 and R4 are H, and Alk is alkyl) in (B) a liquid crystal (e.g. a nematic liquid crystal composed of a mixture of 43% 4-cyano-4'-n-pentylbipheyl, 17% 4-cyano-4'-n-propoxybiphenyl, etc.). The concentration of the dye in the liquid crystal is preferably 0.01W5%.
COPYRIGHT: (C)1982,JPO&Japio
JP8245281A 1981-06-01 1981-06-01 Composition for liquid crystal display Granted JPS57198777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8245281A JPS57198777A (en) 1981-06-01 1981-06-01 Composition for liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8245281A JPS57198777A (en) 1981-06-01 1981-06-01 Composition for liquid crystal display

Publications (2)

Publication Number Publication Date
JPS57198777A true JPS57198777A (en) 1982-12-06
JPS641000B2 JPS641000B2 (en) 1989-01-10

Family

ID=13774904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8245281A Granted JPS57198777A (en) 1981-06-01 1981-06-01 Composition for liquid crystal display

Country Status (1)

Country Link
JP (1) JPS57198777A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585574A (en) * 1980-12-12 1986-04-29 Bayer Aktiengesellschaft Anthraquinone dyestuffs, processes for their preparation, their use, and liquid-crystalline materials containing anthraquinone dyestuffs
US4689171A (en) * 1982-05-03 1987-08-25 Bayer Aktiengesellschaft Anthraquinone dyestuffs, their preparation and use and dichroic material containing these anthraquinone dyestuffs
US4883611A (en) * 1987-09-16 1989-11-28 Mitsui Toatsu Chemicals, Incorporated Dichroic coloring agents for liquid crystal displays

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123673A (en) * 1979-03-16 1980-09-24 Mitsui Toatsu Chem Inc Liquid crystal color display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123673A (en) * 1979-03-16 1980-09-24 Mitsui Toatsu Chem Inc Liquid crystal color display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585574A (en) * 1980-12-12 1986-04-29 Bayer Aktiengesellschaft Anthraquinone dyestuffs, processes for their preparation, their use, and liquid-crystalline materials containing anthraquinone dyestuffs
US4689171A (en) * 1982-05-03 1987-08-25 Bayer Aktiengesellschaft Anthraquinone dyestuffs, their preparation and use and dichroic material containing these anthraquinone dyestuffs
US4883611A (en) * 1987-09-16 1989-11-28 Mitsui Toatsu Chemicals, Incorporated Dichroic coloring agents for liquid crystal displays

Also Published As

Publication number Publication date
JPS641000B2 (en) 1989-01-10

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