GB872685A - New polyazo dyestuffs - Google Patents

New polyazo dyestuffs

Info

Publication number
GB872685A
GB872685A GB4159/59A GB415959A GB872685A GB 872685 A GB872685 A GB 872685A GB 4159/59 A GB4159/59 A GB 4159/59A GB 415959 A GB415959 A GB 415959A GB 872685 A GB872685 A GB 872685A
Authority
GB
United Kingdom
Prior art keywords
acid
amino
dyes
diazo
sulphonic
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
GB4159/59A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB872685A publication Critical patent/GB872685A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • 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
    • 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
    • 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
    • C09B45/34—Preparation from o-monohydroxy azo compounds having in the o'-position an atom or functional group other than hydroxyl, alkoxy, carboxyl, amino or keto groups
    • C09B45/36—Preparation from o-monohydroxy azo compounds having in the o'-position an atom or functional group other than hydroxyl, alkoxy, carboxyl, amino or keto groups by oxidation of hydrogen in o'-position

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

The invention comprises dyes of formula:-<FORM:0872685/IV(c)/1> where R and R1 are residues of the same or different components, which contain X a to the azo groups, and X is a metallizable group or a group convertible thereto during metallization. The dyes are made by coupling appropriate diazo compounds with 5, 51-dihydroxy-2, 21-azonaphthalene-7, 71-disulphonic acid and metalizing if desired. The dyes may also be made by coupling the diazo compound, in an alkaline medium, with 2-amino-5-naphthol-7-sulphonic acid, if desired converting the amino-azo compound thus obtained into its metal complex, diazotizing the amino-azo compound, or its metal complex, in acetic acid and converting 2 mols of the same of different diazo compounds obtained in this manner, by treatment with sulphurous acid salts into a symmetrical or asymmetrical bis- or poly-azo dye. In both processes metallization may be effected at any stage or as an after-treatment on the fibre. 5, 51-Dihydroxy-2, 21-azonaphthalene-7, 71-disulphonic acid is made by treating 2-diazo-5-benzensulphonylnaphthol-7-sulphonic acid with sulphurous acid salts and hydrolysing the sulphonyl radical. Indicated as values for X are hydroxyl, carboxy, cyclic imino, alkoxy, halogen, sulphonic acid and hydrogen. The diazo components may contain substituents such as sulphonic and carboxylic acid, nitro, alkyl, halogen, sulphone, sulphonamide and azo groups. Representative of specified diazo components are aniline, 2-chloroaniline-4-sulphonic acid, salicylic acid, 1-amino-4-nitro-2-phenol, 2-naphthylamine-4, 8-disulphonic acid, 5-methyl-4-aminobenztriazole and 2-methyl- 4-amino- 5-methoxy-1, 11-azobenzene- 41-sulphonic acid. Copper and nickel are preferred metals for complex formation. The dyes are especially useful for native and regenerated cellulose. Examples are provided of the preparation of the dyes and the use of copper complexes in colouring cotton in red, blue, green and grey shades. Specifications 660,447, 721,495 and 790,386 are referred to.
GB4159/59A 1958-02-28 1959-02-05 New polyazo dyestuffs Expired GB872685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE872685X 1958-02-28

Publications (1)

Publication Number Publication Date
GB872685A true GB872685A (en) 1961-07-12

Family

ID=6816085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4159/59A Expired GB872685A (en) 1958-02-28 1959-02-05 New polyazo dyestuffs

Country Status (1)

Country Link
GB (1) GB872685A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5347398A (en) * 1976-10-13 1978-04-27 Du Pont Selective recovery process for metallic chloride from gas effusing material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5347398A (en) * 1976-10-13 1978-04-27 Du Pont Selective recovery process for metallic chloride from gas effusing material
JPS614774B2 (en) * 1976-10-13 1986-02-13 Ii Ai Deyuhon De Nimoasu Ando Co

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