IT1095570B - Coloranti fleocroici e sistemi visualizzatori del tipo elettro-ottico ottenuti con detti coloranti - Google Patents

Coloranti fleocroici e sistemi visualizzatori del tipo elettro-ottico ottenuti con detti coloranti

Info

Publication number
IT1095570B
IT1095570B IT22163/78A IT2216378A IT1095570B IT 1095570 B IT1095570 B IT 1095570B IT 22163/78 A IT22163/78 A IT 22163/78A IT 2216378 A IT2216378 A IT 2216378A IT 1095570 B IT1095570 B IT 1095570B
Authority
IT
Italy
Prior art keywords
dyes
phleocroic
electro
type obtained
optic type
Prior art date
Application number
IT22163/78A
Other languages
English (en)
Other versions
IT7822163A0 (it
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of IT7822163A0 publication Critical patent/IT7822163A0/it
Application granted granted Critical
Publication of IT1095570B publication Critical patent/IT1095570B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/205—Dyes with an unsaturated C on the N atom attached to the nucleus
    • 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
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/60—Pleochroic dyes
    • C09K19/603—Anthroquinonic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Liquid Crystal (AREA)
IT22163/78A 1977-04-11 1978-04-10 Coloranti fleocroici e sistemi visualizzatori del tipo elettro-ottico ottenuti con detti coloranti IT1095570B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78648977A 1977-04-11 1977-04-11

Publications (2)

Publication Number Publication Date
IT7822163A0 IT7822163A0 (it) 1978-04-10
IT1095570B true IT1095570B (it) 1985-08-10

Family

ID=25138743

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22163/78A IT1095570B (it) 1977-04-11 1978-04-10 Coloranti fleocroici e sistemi visualizzatori del tipo elettro-ottico ottenuti con detti coloranti

Country Status (7)

Country Link
US (1) US4154746A (it)
JP (1) JPS53126033A (it)
CH (1) CH639113A5 (it)
DE (1) DE2815335A1 (it)
FR (1) FR2387271A1 (it)
GB (1) GB1602662A (it)
IT (1) IT1095570B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702561A (en) * 1977-04-11 1987-10-27 Minnesota Mining And Manufacturing Company Pleochroic dyes and electro-optical displays therewith
DE2822632A1 (de) * 1978-05-24 1979-11-29 Bayer Ag Anthrachinon-derivate
DE2902177A1 (de) * 1978-12-21 1980-07-17 Bbc Brown Boveri & Cie Fluessigkristallmischung
US4232949A (en) * 1979-02-23 1980-11-11 Minnesota Mining And Manufacturing Company Liquid crystal compositions containing pleochroic dye
US4232950A (en) * 1979-02-23 1980-11-11 Minnesota Mining And Manufacturing Company Liquid crystal compositions including pleochroic dye
CH642393A5 (fr) 1979-10-02 1984-04-13 Ebauches Sa Composition a base de cristal liquide pour dispositif electro-optique.
JPS56100885A (en) * 1980-01-17 1981-08-13 Mitsui Toatsu Chem Inc Composition for liquid crystal color display
DE3007198A1 (de) 1980-02-26 1981-09-03 Siemens AG, 1000 Berlin und 8000 München Pleochroitischer anthrachinon-farbstoff, verfahren zu seiner herstellung und verwendung des farbstoffs
US4394070A (en) * 1980-07-16 1983-07-19 Minnesota Mining And Manufacturing Company Helichromic compounds and displays
DE3036895C2 (de) * 1980-09-30 1985-07-11 Merck Patent Gmbh, 6100 Darmstadt Pleochroitischer Anthrachinon-Farbstoff und Herstellungsverfahren für einen solchen Farbstoff sowie seine Verwendung in einer Flüssigkristallmischung
US4565424A (en) * 1980-12-12 1986-01-21 Minnesota Mining And Manufacturing Company Asymmetric dichroic dye molecules having poly(arylazo) linking groups, a bis-substituted aryl thiazyl end group, and another end group
EP0056492B1 (de) * 1981-01-10 1984-12-12 BASF Aktiengesellschaft Farbstoffe für Flüssigkristallmischungen
US4514045A (en) * 1981-06-22 1985-04-30 Minnesota Mining And Manufacturing Company Helichromic-smectic liquid crystal compositions and display cells
US4448492A (en) * 1982-12-23 1984-05-15 Minnesota Mining And Manufacturing Company Cycloalkyl-type isotropic dyes for liquid crystal display devices
US4530572A (en) * 1982-12-30 1985-07-23 Minnesota Mining And Manufacturing Company Substituted anthraquinone-type isotropic dyes for liquid crystal display devices
US4452511A (en) * 1982-12-30 1984-06-05 Minnesota Mining And Manufacturing Company Substituted anthracene-type isotropic dyes for liquid crystal display devices
SE464264B (sv) * 1984-02-24 1991-03-25 Esab Ab Optiskt filter foer svetsskyddsglas
CN114989630B (zh) * 2022-06-22 2024-05-28 江苏创拓新材料有限公司 负性二色性染料及其制备方法和显示器件

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE625759C (de) * 1930-10-21 1936-02-14 Ig Farbenindustrie Ag Verfahren zur Darstellung von 1,4-Diaminoanthrachinon
JPS5942287B2 (ja) * 1972-12-19 1984-10-13 松下電器産業株式会社 色相変調表示装置
US3960751A (en) * 1973-09-19 1976-06-01 Matsushita Electric Industrial Co., Ltd. Electro-optical display element
DE2521357A1 (de) * 1975-05-14 1976-11-25 Hoechst Ag Anthrachinon-bis-amidine und verfahren zu ihrer herstellung

Also Published As

Publication number Publication date
IT7822163A0 (it) 1978-04-10
JPS6240394B2 (it) 1987-08-27
CH639113A5 (de) 1983-10-31
DE2815335A1 (de) 1978-10-12
GB1602662A (en) 1981-11-11
FR2387271B1 (it) 1982-03-26
US4154746A (en) 1979-05-15
DE2815335C2 (it) 1988-02-04
JPS53126033A (en) 1978-11-02
FR2387271A1 (fr) 1978-11-10

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970423