GB251266A - Manufacture of dyestuffs capable of being chromed - Google Patents

Manufacture of dyestuffs capable of being chromed

Info

Publication number
GB251266A
GB251266A GB9938/26A GB993826A GB251266A GB 251266 A GB251266 A GB 251266A GB 9938/26 A GB9938/26 A GB 9938/26A GB 993826 A GB993826 A GB 993826A GB 251266 A GB251266 A GB 251266A
Authority
GB
United Kingdom
Prior art keywords
dyestuffs
zinc compounds
naphthol
glycerine
glucose
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
GB9938/26A
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 GB251266A publication Critical patent/GB251266A/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
    • 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
    • C09B45/24—Disazo or polyazo compounds
    • C09B45/26—Disazo or polyazo compounds containing chromium

Landscapes

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

Abstract

251,266. Soc. of Chemical Industry in Basle. April 25, 1925, [Convention date]. Monoazo dyes and zinc compounds thereof.- The dyestuffs prepared by treating with reducing agents the dyestuffs derived by coupling the nitrated diazo compound of 1-amino-2-oxynaphthalene-4-sulphonic acid with a naphthol, as described in Specification 214,629, are obtained in much higher yield by conducting the reduction in the presence of an organic compound containing hydroxyl groups, e.g. a carbohydrate, such as glucose or cane sugar, an alcohol, such as glycerine or glycol, or tannin, gallic acid or sulphite cellulose lye. In examples, the dyestuffs from alpha- and #-naphthol are reduced with sodium sulphide in presence of glycerine or glucose, and glycol or cane sugar. The zinc compounds, obtained by treating the products with zinc compounds, are valuable mordant dyestuffs.
GB9938/26A 1925-04-25 1926-04-15 Manufacture of dyestuffs capable of being chromed Expired GB251266A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH251266X 1925-04-25

Publications (1)

Publication Number Publication Date
GB251266A true GB251266A (en) 1926-06-24

Family

ID=4468711

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9938/26A Expired GB251266A (en) 1925-04-25 1926-04-15 Manufacture of dyestuffs capable of being chromed

Country Status (1)

Country Link
GB (1) GB251266A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447394A (en) * 1942-03-24 1948-08-17 American Cyanamid Co Preparation of a barium lithol red
US6008330A (en) * 1998-02-18 1999-12-28 Bayer Aktiengesellschaft Process for the preparation of aminodiarylazo compounds

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447394A (en) * 1942-03-24 1948-08-17 American Cyanamid Co Preparation of a barium lithol red
US6008330A (en) * 1998-02-18 1999-12-28 Bayer Aktiengesellschaft Process for the preparation of aminodiarylazo compounds

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