GB763064A - Manufacture of polyazo-dyestuffs - Google Patents

Manufacture of polyazo-dyestuffs

Info

Publication number
GB763064A
GB763064A GB18402/53A GB1840253A GB763064A GB 763064 A GB763064 A GB 763064A GB 18402/53 A GB18402/53 A GB 18402/53A GB 1840253 A GB1840253 A GB 1840253A GB 763064 A GB763064 A GB 763064A
Authority
GB
United Kingdom
Prior art keywords
acid
diazo
mol
dihydroxy
diphenylamine
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
GB18402/53A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB763064A publication Critical patent/GB763064A/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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/38—Trisazo dyes ot the type
    • C09B35/44—Trisazo dyes ot the type the component K being a hydroxy amine
    • C09B35/46—Trisazo dyes ot the type the component K being a hydroxy amine the component K being an amino naphthol

Landscapes

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

Abstract

The invention comprises trisazo, tetrakisazo and higher azo dyestuffs of the formula <FORM:0763064/IV(b)/1> where Y is hydrogen or sulphonic acid, Z is H or arylazo, R1 is an aromatic residue, and X is one of the following:- -CH:CH-, -NH-CO-NH-, -CO-, -O-, -S-, -NH-, -CO-NH- or a direct linkage; the nuclei a may be substituted. The dyestuffs are made by coupling in acid solution a tetrazotized diamine of the formula <FORM:0763064/IV(b)/2> with 1 mol of the appropriate 1-amino-8-naphthol-mono- or di-sulphonic acid and coupling the resultant diazo-azo compound (A) with 1 mol of a diazo or diazo-azo compound and 1 mol of 3:31-dihydroxydiphenylamine, or (B) with 1 mol of a diazo compound and (in alkaline solution) with 1 mol of an azo dyestuff obtained from 3:31-dihydroxy-diphenylamine and a sulphonated diazo or diazo-azo compound; these couplings can take place in either order; or (C) with 1 mol of 3:31-dihydroxydiphenylamine and then with 2 mols of the same or different diazo or diazo-azo compounds; or (D) with 1 mol of a diazo compound, the resulting diazo-azo compound and 1 mol of another diazo or diazo-azo compound being coupled simultaneously with 1 mol of 3:31 dihydroxy-diphenylamine. The products dye leather in violet, dark green, dark blue or black shades. Examples show the production of the following:-(1) Sulphanilic acid-->H acid\sM benzidine --> 3:31-dihydroxy-diphenylam - ine; (2) Sulphanilic acid-->H acid\sMbenzidine --> 3:31 dihydroxy-diphenylamine \sM sulphanilic acid; (3) Sulphanilic acid --> H acid \sM 4:41-diaminostilbene --> 3:31-dihydroxy-diphenylamine \sM sulphanilic acid; (4) Sulphanilic acid --> H acid \sM benzidine --> 3:31-dihydroxy-diphenylamine \sM o-tolidine --> K acid \sM 6-chloro-metanilic acid; (5) Sulphanilic acid --> H acid \sM benzidine --> 3:31-dihydroxy-diphenylamine \sM benzidine --> H acid \sM sulphanilic acid. Many other dyestuffs are mentioned as obtainable by the process of the invention. Specifications 313,562 [Class 2(iii)], 604,831 and 618,007 are referred to.
GB18402/53A 1952-07-02 1953-07-02 Manufacture of polyazo-dyestuffs Expired GB763064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE763064X 1952-07-02

Publications (1)

Publication Number Publication Date
GB763064A true GB763064A (en) 1956-12-05

Family

ID=6669754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18402/53A Expired GB763064A (en) 1952-07-02 1953-07-02 Manufacture of polyazo-dyestuffs

Country Status (1)

Country Link
GB (1) GB763064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784668A (en) * 1986-05-30 1988-11-15 Basf Aktiengesellschaft Novel heterocycle-containing trisazo dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784668A (en) * 1986-05-30 1988-11-15 Basf Aktiengesellschaft Novel heterocycle-containing trisazo dyes

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