GB317431A - Process for the manufacture of azo dyestuffs - Google Patents

Process for the manufacture of azo dyestuffs

Info

Publication number
GB317431A
GB317431A GB1443328A GB1443328A GB317431A GB 317431 A GB317431 A GB 317431A GB 1443328 A GB1443328 A GB 1443328A GB 1443328 A GB1443328 A GB 1443328A GB 317431 A GB317431 A GB 317431A
Authority
GB
United Kingdom
Prior art keywords
acid
naphthol
phenyl
nitrobenzoylchloride
pyrazolone
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
GB1443328A
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 GB1443328A priority Critical patent/GB317431A/en
Publication of GB317431A publication Critical patent/GB317431A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B31/00Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02Disazo dyes
    • C09B31/12Disazo dyes from other coupling components "C"
    • C09B31/14Heterocyclic components

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

317,431. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). May 16, 1928. Samples furnished Azo dyes are made by coupling a diazo compound of a sulphonic acid, carboxylic acid, bydroxycarboxylic acid or sulphocarboxylic acid of the benzene or naphthalene series with a middle, component, condensing with a nitrobenzoylchloride or a derivative thereof, reducing the nitro group to the amino group (so that the aminoaroyl residue can be introduced again if desired), diazotizing. and coupling with an aminophenylpyrazolone or a derivative thereof and, if desired, rediazotizing the disazo dyestuff in substance or on the fibre and combining with a coupling component. The following examples are specified. (1) The dyestuff 2-naphthylamine- 4 : 8-disulphonic acid # p-xylidine is condensed with p-nitrobenzoylchloride, the nitro group reduced, diazotized and coupled with m-amino-1- phenyl-3-methyl-5-pyrazolone. When developed on the fibre with #-naphthol or 1-phenyl-3- methyl-5-pyrazolone, orange and yellow shades respectively are obtained. (2) The dyestuff 2- naphthylamine-4: 8-disulphonic acid # oanisidine is condensed with p-nitrobenzoylchloride, the nitro group reduced and the product again condensed with p-nitrobenzoylchloride. The resulting nitro-compound is reduced, diazotized and coupled with m-amino-1-phenyl-3- methyl-5-pyrazolone. When developed with #- naphthol or 1 - phenyl - 3-methyl-5-pyrazolone, orange and yellow shades respectively are obtained. (3) The dyestuff obtained according to Example 2 is diazotized and coupled with #- naphthol. Other end components specified are aminonaphthols, alpha- and #-naphthol sulphonic acids or acyl- or aryl-aminonaphthol sulphonic acids, such as N-acetyl-H-acid, 1-naphthol-5-sulphonic acid and N-phenyl-2: 8: 6-acid.
GB1443328A 1928-05-16 1928-05-16 Process for the manufacture of azo dyestuffs Expired GB317431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1443328A GB317431A (en) 1928-05-16 1928-05-16 Process for the manufacture of azo dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1443328A GB317431A (en) 1928-05-16 1928-05-16 Process for the manufacture of azo dyestuffs

Publications (1)

Publication Number Publication Date
GB317431A true GB317431A (en) 1929-08-16

Family

ID=10041117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1443328A Expired GB317431A (en) 1928-05-16 1928-05-16 Process for the manufacture of azo dyestuffs

Country Status (1)

Country Link
GB (1) GB317431A (en)

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