GB245765A - The manufacture of new azo-dyestuffs - Google Patents

The manufacture of new azo-dyestuffs

Info

Publication number
GB245765A
GB245765A GB117/26A GB11726A GB245765A GB 245765 A GB245765 A GB 245765A GB 117/26 A GB117/26 A GB 117/26A GB 11726 A GB11726 A GB 11726A GB 245765 A GB245765 A GB 245765A
Authority
GB
United Kingdom
Prior art keywords
acid
methyl
sulphonic acid
aminodiphenylsulphone
pyrazolones
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
GB117/26A
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 GB245765A publication Critical patent/GB245765A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
    • C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
    • C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
    • C09B29/3647—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms
    • C09B29/3652—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles
    • C09B29/366—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles containing hydroxy-1,2-diazoles, e.g. pyrazolone

Landscapes

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

Abstract

245,765. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbenfabriken vorm. F. Bayer & Co.). Jan. 8, 1925, [Convention date]. Azo dyes are obtained by coupling diazo compounds with the methyl pyrazolones or pyrazolone carboxylic acids obtainable from aminodiarylsulphones and their derivatives such as sulphonic acids, carboxylic acids, or oxycarboxylic acids. They dye wool in yellow shades fast to light, fulling and perspiration and are also applicable for the production of lakes and size colours; the dyestuffs derived from such of the pyrazolones as contain the o-oxycarboxylic acid grouping are useful as chrome dyestuffs for wool yielding yellow and red shades. The following components are specified :-as diazo components, o-toluidine, o- or p-sulphanilic acid, 4-chlor-2-nitraniline, 4-chlor-2-aminophenol, 4-methyl-2-aminodiphenylsulphone and its 4-sulphonic acid; as coupling components the methyl-pyrazolones and the pyrazolone carboxylic acids obtainable from 4<1>-methyl-2-aminodiphenylsulphone and its 4-sulphonic acid, 4<1>-methyl-4-aminodiphenylsulphone- 2-sulphonic acid, and 4<1>-oxy-3<1>-carboxy-2-aminodiphenylsulphone-4-sulphonic acid. Pyrazolones.-Pyrazolones are obtained by condensing the hydrazines from aminodiarylsulphones with acetoacetic or oxaloacetic ester; pyrazolones from 4<1>-methyl-2-aminadiphenylsulphone and its 4-sulphonic acid (made by condensing p-toluenesulphinic acid with 2-nitro-1-chlorbenzene or its 4-sulphonic acid and reducing), 4<1>- methyl-4-aminodiphenylsulphone-2-sulphonic acid (made by condensing p-toluenesulphinic acid with 4-nitro-1-chlorbenzene-2-sulphonic acia and reducing), and 4<1>-oxv-3<1>-carboxy-2-aminodiphenylsulphone-4-sulphonic acid (made by condensing salicylsulphinic acid with 2-nitro-1-chlorbenzene-4-sulphonic acid and reducing) are specified.
GB117/26A 1925-01-08 1926-01-02 The manufacture of new azo-dyestuffs Expired GB245765A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE245765X 1925-01-08

Publications (1)

Publication Number Publication Date
GB245765A true GB245765A (en) 1926-07-15

Family

ID=5932651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB117/26A Expired GB245765A (en) 1925-01-08 1926-01-02 The manufacture of new azo-dyestuffs

Country Status (1)

Country Link
GB (1) GB245765A (en)

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