GB302770A - Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product - Google Patents

Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product

Info

Publication number
GB302770A
GB302770A GB2875727A GB2875727A GB302770A GB 302770 A GB302770 A GB 302770A GB 2875727 A GB2875727 A GB 2875727A GB 2875727 A GB2875727 A GB 2875727A GB 302770 A GB302770 A GB 302770A
Authority
GB
United Kingdom
Prior art keywords
nitro
aminophenol
oxyazo
compounds
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
GB2875727A
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 GB2875727A priority Critical patent/GB302770A/en
Publication of GB302770A publication Critical patent/GB302770A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

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

Abstract

302,770. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). Oct. 28, 1927. 2 : 8 - Dioxynaphthalene-6-carboxylic acid is prepared by fusing 2-naphthol-8-sulpho-6-carboxylic acid with caustic alkali. Specification 291,965 is referred to. o-Oxyazo-dyes are obtained by combining aromatic oxydiazo compounds with the above intermediate. They are mordant dyestuffs dyeing wool brownish tints turning to fast brown to black shades when after-chromed. Diazo compounds of the following are specified :-4-chlor-2- aminophenol. 4-nitro - 2 - aminophenol, p-nitro-oaminosalicylic acid, picramic acid, 5-nitro-3- amino - p - cresol, p-chlor-o-nitro-o-aminophenol, nitroamino-phenol sulphonic acids, o-aminonaphthol sulphonic acids and o-hydroxyaminoazo compounds.
GB2875727A 1927-10-28 1927-10-28 Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product Expired GB302770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2875727A GB302770A (en) 1927-10-28 1927-10-28 Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2875727A GB302770A (en) 1927-10-28 1927-10-28 Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product

Publications (1)

Publication Number Publication Date
GB302770A true GB302770A (en) 1928-12-27

Family

ID=10280643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2875727A Expired GB302770A (en) 1927-10-28 1927-10-28 Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product

Country Status (1)

Country Link
GB (1) GB302770A (en)

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