GB482342A - Manufacture of disazo-dyestuffs soluble in water - Google Patents

Manufacture of disazo-dyestuffs soluble in water

Info

Publication number
GB482342A
GB482342A GB2595636A GB2595636A GB482342A GB 482342 A GB482342 A GB 482342A GB 2595636 A GB2595636 A GB 2595636A GB 2595636 A GB2595636 A GB 2595636A GB 482342 A GB482342 A GB 482342A
Authority
GB
United Kingdom
Prior art keywords
resorcinol
acid
sulphonic acid
sulphonic
methyltaurine
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
GB2595636A
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
Priority to GB2595636A priority Critical patent/GB482342A/en
Publication of GB482342A publication Critical patent/GB482342A/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
    • C09B33/02—Disazo dyes
    • C09B33/04—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

Disazo dyes soluble in water are made by coupling in any order of succession resorcinol with a diazo compound of the benzene series (1 mol) and a diazo compound from an amine of the benzene series containing besides the amino group to be diazotized a free amino group and/or at least one alkyl sulphonic group and containing no nitro group (1 mol), the components being selected so that the finished dyestuff contains at least two sulphonic acid groups, or 2 mols of the diazo compound substituted by amino and/or alkyl sulphonic groups are coupled with 1 mol of resorcinol. They dye leather in brown shades. In examples the following dyes are described: (1) 4-amino-1-benzylsulphonic acid \sQ resorcinol; (2) 4 - aminobenzene - 1 - methyltaurine - 2-sulphonic acid --> resorcinol \sM 4-nitro-aniline-2-sulphonic acid; (3) and (6) 1 : 4-diaminobenzene-sulphomethyltauride --> resorcinol \sM 2-nitroaniline-4-sulphonic acid or sulphanilic acid; (4) 1 : 4-diaminobenzene sulphonic acid --> resorcinol \sM sulphanilic acid or 1 : 4-diaminobenzene sulphonic acid; (5) 1 - aminobenzene - 3 - sulphotauride --> resorcinol \sM sulphanilic acid. 4 - Aminobenzene - 1 - methyltaurine - 2-sulphonic acid is made by condensing 4-nitro 1-chlorbenzene-2-sulphonic acid with methyltaurine and reducing. 1 : 4 - Diaminobenzene sulphomethyltauride is made by condensing 1-chlor-4-nitrobenzene-2-sulphochloride with methyltaurine, exchanging the chlorine for amino and reducing. 1 - Aminobenzene - 3 - sulphotauride is made by condensing 1-nitrobenzene-3-sulphochloride with taurine and reducing.
GB2595636A 1936-09-24 1936-09-24 Manufacture of disazo-dyestuffs soluble in water Expired GB482342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2595636A GB482342A (en) 1936-09-24 1936-09-24 Manufacture of disazo-dyestuffs soluble in water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2595636A GB482342A (en) 1936-09-24 1936-09-24 Manufacture of disazo-dyestuffs soluble in water

Publications (1)

Publication Number Publication Date
GB482342A true GB482342A (en) 1938-03-24

Family

ID=10236038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2595636A Expired GB482342A (en) 1936-09-24 1936-09-24 Manufacture of disazo-dyestuffs soluble in water

Country Status (1)

Country Link
GB (1) GB482342A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852263A (en) * 1971-01-15 1974-12-03 Bayer Ag Substituted 4-(n-sulphoalkylene-aminosulphonyl)-phenyl-azo-phenyl compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852263A (en) * 1971-01-15 1974-12-03 Bayer Ag Substituted 4-(n-sulphoalkylene-aminosulphonyl)-phenyl-azo-phenyl compounds

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