GB193385A - Manufacture of dyestuffs capable of being chromed - Google Patents

Manufacture of dyestuffs capable of being chromed

Info

Publication number
GB193385A
GB193385A GB2339/23A GB233923A GB193385A GB 193385 A GB193385 A GB 193385A GB 2339/23 A GB2339/23 A GB 2339/23A GB 233923 A GB233923 A GB 233923A GB 193385 A GB193385 A GB 193385A
Authority
GB
United Kingdom
Prior art keywords
nitro
aminophenol
chromed
manufacture
chloro
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
GB2339/23A
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.)
BASF Schweiz AG
Original Assignee
Gesellschaft fuer Chemische Industrie in Basel CIBA
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 Gesellschaft fuer Chemische Industrie in Basel CIBA filed Critical Gesellschaft fuer Chemische Industrie in Basel CIBA
Publication of GB193385A publication Critical patent/GB193385A/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

Monoazo dyes which yield black shades on wool when afterchromed are prepared by coupling a diazotized unsulphonated 4- or 6-nitro-2-aminophenol with 1-amino-5-oxynaphthalene-7-sulphonic acid in the presence of calcium hydroxide. In an example 4-nitro-2-aminophenol is used as diazo component. A table is given showing the dyeing properties of the dyes from the 4-nitro-, 4-nitro-6-chloro-, 6-nitro-4-chloro-, 6-nitro-4-methyl-, and 4-nitro-6-methyl derivatives of 2-aminophenol. Specifications 21029/99, 20551/01, 7910A/05, and 9264/06 are referred to.
GB2339/23A 1922-02-18 1923-01-25 Manufacture of dyestuffs capable of being chromed Expired GB193385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH193385X 1922-02-18

Publications (1)

Publication Number Publication Date
GB193385A true GB193385A (en) 1924-01-03

Family

ID=4438824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2339/23A Expired GB193385A (en) 1922-02-18 1923-01-25 Manufacture of dyestuffs capable of being chromed

Country Status (1)

Country Link
GB (1) GB193385A (en)

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