GB1555955A - Solutions of pleochroic azo dye in liquid crystals material and devices incorporating such solutions - Google Patents

Solutions of pleochroic azo dye in liquid crystals material and devices incorporating such solutions

Info

Publication number
GB1555955A
GB1555955A GB2585975A GB2585975A GB1555955A GB 1555955 A GB1555955 A GB 1555955A GB 2585975 A GB2585975 A GB 2585975A GB 2585975 A GB2585975 A GB 2585975A GB 1555955 A GB1555955 A GB 1555955A
Authority
GB
United Kingdom
Prior art keywords
solutions
liquid crystals
azo dye
devices incorporating
crystals material
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
GB2585975A
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB2585975A priority Critical patent/GB1555955A/en
Priority to US05/695,404 priority patent/US4145114A/en
Priority to FR7618334A priority patent/FR2438676A1/en
Priority to JP51072087A priority patent/JPS522885A/en
Priority to CH777076A priority patent/CH624705A5/de
Priority to DE2627215A priority patent/DE2627215C2/en
Publication of GB1555955A publication Critical patent/GB1555955A/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
    • 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
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00—Monoazo dyes 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
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, 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
    • 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
    • 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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/08—Preparation of azo dyes from other azo compounds by reduction
    • 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
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0083—Solutions of dyes
GB2585975A 1975-06-17 1975-06-17 Solutions of pleochroic azo dye in liquid crystals material and devices incorporating such solutions Expired GB1555955A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB2585975A GB1555955A (en) 1975-06-17 1975-06-17 Solutions of pleochroic azo dye in liquid crystals material and devices incorporating such solutions
US05/695,404 US4145114A (en) 1975-06-17 1976-06-14 Pleochroic dyes
FR7618334A FR2438676A1 (en) 1975-06-17 1976-06-16 COLOR FOR LIQUID CRYSTAL DEVICE
JP51072087A JPS522885A (en) 1975-06-17 1976-06-17 Colors for liquid crystal materials and liquid crystal apparatus using same
CH777076A CH624705A5 (en) 1975-06-17 1976-06-17
DE2627215A DE2627215C2 (en) 1975-06-17 1976-06-18 Liquid crystal materials containing pleochroism azo dyes and their uses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2585975A GB1555955A (en) 1975-06-17 1975-06-17 Solutions of pleochroic azo dye in liquid crystals material and devices incorporating such solutions

Publications (1)

Publication Number Publication Date
GB1555955A true GB1555955A (en) 1979-11-14

Family

ID=10234518

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2585975A Expired GB1555955A (en) 1975-06-17 1975-06-17 Solutions of pleochroic azo dye in liquid crystals material and devices incorporating such solutions

Country Status (1)

Country Link
GB (1) GB1555955A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426312A (en) 1980-12-30 1984-01-17 Bayer Aktiengesellschaft Liquid crystal material containing disazo dyestuffs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426312A (en) 1980-12-30 1984-01-17 Bayer Aktiengesellschaft Liquid crystal material containing disazo dyestuffs

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19960616