GB276353A - Manufacture of azo-dyestuffs - Google Patents

Manufacture of azo-dyestuffs

Info

Publication number
GB276353A
GB276353A GB21892/27A GB2189227A GB276353A GB 276353 A GB276353 A GB 276353A GB 21892/27 A GB21892/27 A GB 21892/27A GB 2189227 A GB2189227 A GB 2189227A GB 276353 A GB276353 A GB 276353A
Authority
GB
United Kingdom
Prior art keywords
sulphophenyl
methyl
pyrazolone
acid
sulphonic acid
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
GB21892/27A
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 GB276353A publication Critical patent/GB276353A/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)
  • Coloring (AREA)

Abstract

276,353. I. G. Farbenindustrie Akt.- Ges. Aug. 19, 1926, [Convention date Dlonoazo dyes giving yellow dyeings particularly fast to light are obtained by coupling diazotized 2:5: 6-trichlor-3-aminotoluene-4-sulphonic acid with a 1-sulphophenyl-5-pyrazolone substituted in the 3-position by a methyl, carboxyl or carboxylic ester group. In an example, 1-3<1>-sulpho - 6' - chlor-phenyl - 3-methyl-5-pyrazolone is used; the product dyes wool in a pure yellow shade fast to water, sodium carbonate and hot pressing, and of exceptional fastness to light. The 1-sulphophenyl-3-methyl-5-pyrazolones and the 1- sulphophenyl-5-pyrazolone-3-carboxylic acids and their esters are also specified as coupling components. 3:5:6 - Trichlor-3-aminotoluene-4-sulphonic acid is obtained by chlorinating p-toluenesulphonic acid, o-chlortoluene-p-sulphenic acid, or 2 : 6-dichlortoluene-4-sulphonic acid, and nitrating and reducing the product.
GB21892/27A 1926-08-19 1927-08-19 Manufacture of azo-dyestuffs Expired GB276353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE276353X 1926-08-19

Publications (1)

Publication Number Publication Date
GB276353A true GB276353A (en) 1928-01-12

Family

ID=6028128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21892/27A Expired GB276353A (en) 1926-08-19 1927-08-19 Manufacture of azo-dyestuffs

Country Status (1)

Country Link
GB (1) GB276353A (en)

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