GB395968A - Improvements in the manufacture and production of complex metal compounds of ortho-hydroxyazo dyestuffs - Google Patents

Improvements in the manufacture and production of complex metal compounds of ortho-hydroxyazo dyestuffs

Info

Publication number
GB395968A
GB395968A GB2672/33A GB267233A GB395968A GB 395968 A GB395968 A GB 395968A GB 2672/33 A GB2672/33 A GB 2672/33A GB 267233 A GB267233 A GB 267233A GB 395968 A GB395968 A GB 395968A
Authority
GB
United Kingdom
Prior art keywords
ortho
manufacture
production
naphthol
metal compounds
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
GB2672/33A
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 GB395968A publication Critical patent/GB395968A/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
    • C09B45/01—Complex metal compounds of azo dyes characterised by the method of metallisation

Landscapes

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

Abstract

Complex chromium compounds of o-oxyazo dyes are made by treating o-alkyloxyazo dyes with a sulphate of chromium under such conditions that the alkyl radicle is split off. In examples the dyestuffs 4-chlor-2-anisidine --> 2-naphthol-6 : 8-disulpho acid or 1-naphthol-3 : 8-disulpho acid, 5-nitro-4-methyl-2-aminoanisole --> 1-naphthol-4 : 8-disulpho acid are heated in a lead-lined autoclave with a sulphuric acid solution of chromium oxide. Reference has been directed by the Comptroller to Specification 296,819, [Class 2 (iii), Dyes &c.].
GB2672/33A 1932-05-10 1933-01-27 Improvements in the manufacture and production of complex metal compounds of ortho-hydroxyazo dyestuffs Expired GB395968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE395968X 1932-05-10

Publications (1)

Publication Number Publication Date
GB395968A true GB395968A (en) 1933-07-27

Family

ID=6396944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2672/33A Expired GB395968A (en) 1932-05-10 1933-01-27 Improvements in the manufacture and production of complex metal compounds of ortho-hydroxyazo dyestuffs

Country Status (1)

Country Link
GB (1) GB395968A (en)

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