GB237594A - Manufacture of ortho-oxyazo-dyestuffs and intermediate products thereof - Google Patents

Manufacture of ortho-oxyazo-dyestuffs and intermediate products thereof

Info

Publication number
GB237594A
GB237594A GB18112/25A GB1811225A GB237594A GB 237594 A GB237594 A GB 237594A GB 18112/25 A GB18112/25 A GB 18112/25A GB 1811225 A GB1811225 A GB 1811225A GB 237594 A GB237594 A GB 237594A
Authority
GB
United Kingdom
Prior art keywords
diazo
sulphonic
oxide
acid
oxynaphthalene
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
GB18112/25A
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.)
Agfa Gevaert NV
Original Assignee
Aktiengesellschaft fuer Anilinfabrikation GmbH
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 Aktiengesellschaft fuer Anilinfabrikation GmbH filed Critical Aktiengesellschaft fuer Anilinfabrikation GmbH
Publication of GB237594A publication Critical patent/GB237594A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Acidyloxynaphthalene - 1 : 2-diazo-oxide-4-sulphonic acids are obtained by treating 6- or 7-oxynaphthalene-1 : 2-diazo-oxide-4-sulphonic acid with acid anhydrides or acid chlorides. Examples are given of the preparation of the p-toluene-sulphonic and benzoic esters of the 7-oxy compound. The parent diazo-oxides are obtained by treating a 1-amino-2 : 6- or -2 : 7-oxynaphthalene-4-sulphonic acid, or a derivative thereof, with nitrite in presence of a metal salt. The Specification as open to inspection under Sect. 91 (3) (a) describes also the preparation of the acetyl-6-oxy compound and the p-toluenesulpho-nitro-7-oxy compound. This subject-matter does not appear in the Specification as accepted. 1-amino-2 : 6-dioxynaphthalene-4-sulphonic acid is obtained by converting 2 : 4-dioxynaphthalene into the nitroso compound, and treating the latter with sodium bisulphite. o-Oxyazo dyes are produced by coupling the above-described 6- or 7-acidyloxynaphthalene-1 : 2-diazo-oxide-4-sulphonic acids with 1-aryl-3-methyl-5-pyrazolones; the products dye wool in orange to brown shades changed towards red by after-chroming. The following components are specified: p-toluenesulphonic or benzoic ester of 7 - oxynaphthalene - 1 : 2-diazo-oxide-4-sulphonic acid, and 1-phenyl-, 1-p-nitrophenyl-, or 1-a -naphthyl-3-methyl-5-pyrazolone. Specification 17274/04 is referred to.
GB18112/25A 1924-07-28 1925-07-15 Manufacture of ortho-oxyazo-dyestuffs and intermediate products thereof Expired GB237594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE237594X 1924-07-28

Publications (1)

Publication Number Publication Date
GB237594A true GB237594A (en) 1926-04-01

Family

ID=5903174

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18112/25A Expired GB237594A (en) 1924-07-28 1925-07-15 Manufacture of ortho-oxyazo-dyestuffs and intermediate products thereof

Country Status (1)

Country Link
GB (1) GB237594A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077395A (en) * 1989-08-12 1991-12-31 Hoechst Aktiengesellschaft Substituted 1,2-naphthoquinone-2-diazide-4-sulfonic acids and processes for their preparation and use

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077395A (en) * 1989-08-12 1991-12-31 Hoechst Aktiengesellschaft Substituted 1,2-naphthoquinone-2-diazide-4-sulfonic acids and processes for their preparation and use

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