GB533060A - Manufacture of hexakisazo dyestuffs, more especially suitable for dyeing leather - Google Patents

Manufacture of hexakisazo dyestuffs, more especially suitable for dyeing leather

Info

Publication number
GB533060A
GB533060A GB27180/39A GB2718039A GB533060A GB 533060 A GB533060 A GB 533060A GB 27180/39 A GB27180/39 A GB 27180/39A GB 2718039 A GB2718039 A GB 2718039A GB 533060 A GB533060 A GB 533060A
Authority
GB
United Kingdom
Prior art keywords
acid
nitro
sulphonic acid
resorcinol
aminodiphenylamine
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
GB27180/39A
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.)
Novartis AG
Original Assignee
JR Geigy 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 JR Geigy AG filed Critical JR Geigy AG
Publication of GB533060A publication Critical patent/GB533060A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/64Higher polyazo dyes, e.g. of the types

Landscapes

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

Abstract

533,060. Dyes. GEIGY AKT.-GES., J. R. Oct. 4, 1939, No. 27180. Convention date, Oct. 5, 1938. [Classes 2 (iii) and 15 (ii)] Hexakisazo dyes, suitable for dyeing leather, strong shades of reddish to yellowish brown, of the general formula wherein A represents the residue of resorcinol, B represents a naphthalene residue C represents a diphenylamine residue and D represents a radicle comprising two benzene nuclei connected directly or through an atom or group such as - O- ,-S-, -NH-, -CH<SP>2</SP>-, -SO 2 -, -CH 2 -CH 2 -, - CH = CH- or -HN.CO-, and in which the whole dyestuff contains at least four sulphonic acid groups, are obtained by (a) diazotizing the monazo dyestuff C-N = N-B-NH 2 (2 mols.) and coupling in alkaline solution with the disazo dyestuff (1 mol.) or (b) tetrazotizing the diamine H 2 N-D-NH 2 (1 mol.) and coupling with the disazo Examples relate to the preparation of the following dyestuffs, (1)4<SP>1</SP>-nitro-4-aminodiphenylamine - 2<SP>1</SP> - sulphonic acid # 1:6 - aminonaphthalenesulphonic acid (with or without the 1:7 - isomer) - resorcinol # benzidine - 2 - sulphonic acid or N, 3<SP>1</SP> - aminobenzoyl - 1:4 - diaminobenzene - 3 - sulphonic acid # resorcinol # 1:6 - aminonaphthalenesulphonic acid as above # 4<SP>1</SP> - nitro - 4 - aminodiphenylamine - 2<SP>1</SP> - sulphonic acid, by either of methods (a) or (b) above ; the products dye leather deep reddish brown ; (2) 4<SP>1</SP> - nitro - 4 - aminodiphenylamine - 2<SP>1</SP> - sulphonic acid # 1:6 - and 1:7 - aminonaphthalenesulphonic acids in admixture # resorcinol # 4:4<SP>1</SP> - diaminostilbene - 2:2<SP>1</SP> - disulpbonic acid or 4:4<SP>1</SP> - diaminodiphenylsulphide - 2:2<SP>1</SP> - disulphonic acid or 4:4<SP>1</SP>-diaminodibenzyl-2:21- disulphonic acid or 4:4<SP>1</SP>-diamino-3:3<SP>1</SP>-dimethyldiphenylmethane disulphonic acid or 4:4<SP>1</SP>- diaminodiphenylether - 3:3<SP>1</SP> - disulphonic acid # resorcinol # the 1:6 - and 1:7 - acid mixture as above # 4<SP>1</SP> - nitio - 4 - aminodiphenylamine - 2<SP>1</SP> - sulphonic acid, by method (a) above ; the products dye leather deep reddish brown; (3) 4-aminodiphenylamine-2-sulphonic acid # the 1:6- and 1:7-acid mixture as above - resorcinol # benzidine - 2:2<SP>1</SP> - disulphonic acid - resorcinol # the 1:6 - and 1:7 - acid mixture as above - 4 - aminodiphenylamine - 2 - sulphonic acid, by method (a) above ; the product dyes leather deep brown ; (4) 4<SP>1</SP>-nitro - 4 - aminodiphenylamine - 2<SP>1</SP> - sulphonic acid or the 2<SP>1</SP>-nitro-4<SP>1</SP>-sulpho isomer # the 1:6- and 1:7 - acid mixture as above or 1 - aminonaphthalene # resorcinol # benzidine - or tolidine - 2:2<SP>1</SP> - disulphonic acid or 4:4<SP>1</SP> - diaminodiphenylamine - 2 - sulphonic or 2:3<SP>1</SP> - disulphonic acid # resorcinol # the 1:6 - and 1:7 - acid mixture as above or 1 - aminonaphthalene # 4<SP>1</SP> - nitro - 4 - aminodiphenyl - amine - 2<SP>1</SP> - sulphonic acid or its 2<SP>1</SP> - nitro- 4' - sulpho isomer, by method (a) above the product dyes leather deep brown ; (5) 2<SP>1</SP>-nitro- 4 - aminodiphenylamine - 4<SP>1</SP> - phenylsulphone - 3<SP>11</SP> - sulphonic acid # the 1:6- and 1:7-acid mixture as above # resorcinol # benzidine - 2:2<SP>1</SP> - disulphonic acid - resorcinol - the 1:6 - and 1:7-acid mixture as above # 2<SP>1</SP> - nitro - 4 - aminodiphenylamine - 4<SP>1</SP> - phenylsulphone - 3<SP>11</SP> - sulphonic acid, by method (a) above ; the product dyes leather deep yellow-brown. An example of the process of dyeing leather is given. N, 3<SP>1</SP> - - Aminobenzoyl - 1:4 - - diaminobenzene-3 - sulphonic acid is obtained by reducing the nitro group in the product of reaction of 3-nitrobenzoyl chloride with 1:4-phenylenediamine sulphonic acid. 4:4<SP>1</SP>-Diaminodiphenyl ether-3:3<SP>1</SP>-disulphonicacid is obtained by reducing the nitro groups in the product of reaction of 1-chloro-4-nitrobenzene-3-sulphonic acid with 4-nitrophenol-3- sulphonic acid. 2<SP>1</SP>- Nitro - 4 - amiazodiphenylamine 4<SP>1</SP> - phenylsulphone-3<SP>11</SP>-sulphonic acid is obtained by saponifying the product of reaction of 4-chloro- 3-nitro-diphenylsulphone-3<SP>1</SP>-sulphonic acid with 4 -acetylaminoaniline.
GB27180/39A 1938-10-05 1939-10-04 Manufacture of hexakisazo dyestuffs, more especially suitable for dyeing leather Expired GB533060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH533060X 1938-10-05

Publications (1)

Publication Number Publication Date
GB533060A true GB533060A (en) 1941-02-05

Family

ID=4518585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27180/39A Expired GB533060A (en) 1938-10-05 1939-10-04 Manufacture of hexakisazo dyestuffs, more especially suitable for dyeing leather

Country Status (1)

Country Link
GB (1) GB533060A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041581A1 (en) * 1997-03-18 1998-09-24 Basf Aktiengesellschaft Oligomeric azo dyes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041581A1 (en) * 1997-03-18 1998-09-24 Basf Aktiengesellschaft Oligomeric azo dyes
US6114512A (en) * 1997-03-18 2000-09-05 Basf Aktiengesellschaft Oligomeric azo dyes

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