GB2090274B - Dichroic dyestuff - Google Patents

Dichroic dyestuff

Info

Publication number
GB2090274B
GB2090274B GB8137533A GB8137533A GB2090274B GB 2090274 B GB2090274 B GB 2090274B GB 8137533 A GB8137533 A GB 8137533A GB 8137533 A GB8137533 A GB 8137533A GB 2090274 B GB2090274 B GB 2090274B
Authority
GB
United Kingdom
Prior art keywords
dichroic dyestuff
dichroic
dyestuff
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.)
Expired
Application number
GB8137533A
Other versions
GB2090274A (en
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB2090274A publication Critical patent/GB2090274A/en
Application granted granted Critical
Publication of GB2090274B publication Critical patent/GB2090274B/en
Expired legal-status Critical Current

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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/50—Tetrazo dyes
    • 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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • 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
    • C09K19/601—Azoic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Liquid Crystal (AREA)
GB8137533A 1980-12-12 1981-12-11 Dichroic dyestuff Expired GB2090274B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21601080A 1980-12-12 1980-12-12

Publications (2)

Publication Number Publication Date
GB2090274A GB2090274A (en) 1982-07-07
GB2090274B true GB2090274B (en) 1984-09-12

Family

ID=22805309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8137533A Expired GB2090274B (en) 1980-12-12 1981-12-11 Dichroic dyestuff

Country Status (4)

Country Link
JP (1) JPS57123258A (en)
GB (1) GB2090274B (en)
HK (1) HK38985A (en)
SG (1) SG17485G (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401369A (en) * 1981-10-19 1983-08-30 Electronic Display Systems, Inc. Class of dichroic dyes for use with liquid crystals
CA1189311A (en) * 1981-11-09 1985-06-25 Nicholas L. Sethofer Liquid crystalline chiral compound, compositions and guest-host display including same
US4411812A (en) * 1981-11-12 1983-10-25 General Electric Company Dichroic liquid crystal compositions made with asymmetric tris-azo dyes
JPH0613703B2 (en) * 1982-06-30 1994-02-23 三菱化成株式会社 Guest-host type liquid crystal composition
JPS59204659A (en) * 1983-05-04 1984-11-20 Casio Comput Co Ltd Dichroic dye for liquid crystal
JPS6243464A (en) * 1986-08-01 1987-02-25 Casio Comput Co Ltd Thienothiazole-type azo compound
DE4434165A1 (en) * 1994-09-24 1996-03-28 Cassella Ag Hair dye
US6001331A (en) * 1996-01-24 1999-12-14 Warner-Lambert Company Method of imaging amyloid deposits
CN102918117B (en) 2010-06-14 2015-08-12 巴斯夫欧洲公司 Black dichroic dye
JP5789998B2 (en) * 2011-01-28 2015-10-07 三菱化学株式会社 Dichroic dye, liquid crystal composition containing the dye, and liquid crystal element

Also Published As

Publication number Publication date
GB2090274A (en) 1982-07-07
HK38985A (en) 1985-05-24
SG17485G (en) 1986-01-24
JPS57123258A (en) 1982-07-31

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921211