GB387121A - Improvements in the manufacture of halogenated indigo and its derivatives - Google Patents

Improvements in the manufacture of halogenated indigo and its derivatives

Info

Publication number
GB387121A
GB387121A GB271332A GB271332A GB387121A GB 387121 A GB387121 A GB 387121A GB 271332 A GB271332 A GB 271332A GB 271332 A GB271332 A GB 271332A GB 387121 A GB387121 A GB 387121A
Authority
GB
United Kingdom
Prior art keywords
acid
chlorine
indigo
treated
halogenated
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
GB271332A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB271332A priority Critical patent/GB387121A/en
Publication of GB387121A publication Critical patent/GB387121A/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
    • C09B7/00—Indigoid dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (AREA)

Abstract

Indigo and thioindigo and their derivatives are halogenated by customary methods in alkyl or cycloalkylsulphuric acids as diluents. The halogenation may be effected at from -10 DEG to 80 DEG , under ordinary or elevated pressure and with or without catalysts. The alkyl or cycloalkylsulphuric acids may be recovered by saponification and re-esterification. According to examples, indigo is halogenated with chlorine in ethylsulphuric acid, with bromine in ethylsulphuric acid to give 5 : 5<1>-dibromindigo, and with chlorine in n-amylsulphuric acid; 4 : 4<1>-dichlorindigo is treated with bromine in methylsulphuric acid; thioindigo is treated with chlorine in n-butylsulphuric acid; 7 : 7<1>-dimethylindigo is treated with chlorine in cyclohexylsulphuric acid. The use of tolyl indigo and propylsulphuric acid is also specified.
GB271332A 1932-01-29 1932-01-29 Improvements in the manufacture of halogenated indigo and its derivatives Expired GB387121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB271332A GB387121A (en) 1932-01-29 1932-01-29 Improvements in the manufacture of halogenated indigo and its derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB271332A GB387121A (en) 1932-01-29 1932-01-29 Improvements in the manufacture of halogenated indigo and its derivatives

Publications (1)

Publication Number Publication Date
GB387121A true GB387121A (en) 1933-02-02

Family

ID=9744478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB271332A Expired GB387121A (en) 1932-01-29 1932-01-29 Improvements in the manufacture of halogenated indigo and its derivatives

Country Status (1)

Country Link
GB (1) GB387121A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112227086A (en) * 2020-10-20 2021-01-15 佛山市高敦织染有限公司 Fabric bright color dye and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112227086A (en) * 2020-10-20 2021-01-15 佛山市高敦织染有限公司 Fabric bright color dye and preparation method thereof

Similar Documents

Publication Publication Date Title
GB482357A (en) Image amplifying tube
GB387121A (en) Improvements in the manufacture of halogenated indigo and its derivatives
GB417383A (en) Manufacture of alcohols from marine animal waxes
SU33112A1 (en) Electric jackhammer
SU40169A1 (en) Sleigh
GB582505A (en) Improvements in the manufacture of plaster of paris
GB460439A (en) Manufacture of monobromopyrene
SU31621A1 (en) Micrometer
FR769342A (en) Process for obtaining chlorinated rubber dispersions
GB393240A (en) Manufacture of oxydiphenyl-ether-carboxylic acids
GB345623A (en) Improvements in and relating to the manufacture of dyestuffs
GB461322A (en) Manufacture of compounds of the aetio-cholenone or aetio-allo-cholenone series
GB396320A (en) Manufacture of arylamino-1-hydroxynaphthalene-carboxylic acids
GB363346A (en) The production of x-ray photographs
GB464174A (en) Improvements in the manufacture of rubber products
FR792977A (en) Process for the production of water soluble monoazo dyes
GB517674A (en) Manufacture of 2-chloro (or bromo)-4 (or 6)-nitro-aminobenzene-6 (or 4)-sulphonic acid
GB419954A (en) Process for the manufacture of 1.4-diamino-anthraquinone-2.3.x-trisulphonic acids
GB348241A (en) The manufacture of derivatives of the thiazolanthrone-series
GB300771A (en) Process for the manufacture of 1.8-naphthoxypenthiophen compounds
FR753055A (en) Process for the preparation of water-soluble sulphonated condensation products with high stability towards hard water
GB349684A (en) Improved process of thickening vegetable oil and a vegetable oil so thickened
GB469820A (en) Improvements in the manufacture of polymerisation products of 2-chloro-butadiene-1.3.
GB485115A (en) Improvements in the manufacture of polyvinyl chloride polymerisates
FR791792A (en) Process for the preparation of vulcanized aqueous dispersions of rubber