GB495395A - Process for the manufacture of acid dyestuffs - Google Patents

Process for the manufacture of acid dyestuffs

Info

Publication number
GB495395A
GB495395A GB13448/37A GB1344837A GB495395A GB 495395 A GB495395 A GB 495395A GB 13448/37 A GB13448/37 A GB 13448/37A GB 1344837 A GB1344837 A GB 1344837A GB 495395 A GB495395 A GB 495395A
Authority
GB
United Kingdom
Prior art keywords
isatin
prepared
products
aminocarbazol
sulphonating
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
GB13448/37A
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
Publication of GB495395A publication Critical patent/GB495395A/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
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/16—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing hetero atoms
    • C09B23/162—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing hetero atoms only nitrogen atoms
    • C09B23/164—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing hetero atoms only nitrogen atoms containing one nitrogen atom

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Acid dyestuffs are prepared by sulphonating the condensation products of aromatic o-diamines, one amino group of which is primary and the other primary or secondary with o-diketones. In examples, isatin is condensed with the following o-diamines and the products sulphonated: 1-aminocarbazol, 2-aminodiphenylamine, 4 - nitro - 1 : 2 - phenylenediamine and the reduction product of 2 : 4-dinitro - 3 - oxyethylamino - 41 - hydroxydiphenylamine. The use of halogenated isatins, naphthisatin and 4-ethoxy-21-aminodiphenylamine is mentioned. The dyestuffs dye wool or animal fibres red to brown shades. Samples have been furnished under Sect. 2 (5) of products obtained by sulphonating condensation products prepared from the following pairs of components: (1) diketodihydro-2 : 1-naphthothiophen and 1-aminocarbazol; (2) isatin and 2 : 3-diaminophenazine dihydrochloride; (3) isatin and reduced 4-chlor-21-nitrodiphenylamine (prepared from o-nitrochlorbenzene and 4-chloraniline).
GB13448/37A 1936-05-12 1937-05-11 Process for the manufacture of acid dyestuffs Expired GB495395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE495395X 1936-05-12

Publications (1)

Publication Number Publication Date
GB495395A true GB495395A (en) 1938-11-11

Family

ID=6544876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13448/37A Expired GB495395A (en) 1936-05-12 1937-05-11 Process for the manufacture of acid dyestuffs

Country Status (1)

Country Link
GB (1) GB495395A (en)

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