GB667225A - Process for the production of black leather dyestuffs - Google Patents

Process for the production of black leather dyestuffs

Info

Publication number
GB667225A
GB667225A GB26426/49A GB2642649A GB667225A GB 667225 A GB667225 A GB 667225A GB 26426/49 A GB26426/49 A GB 26426/49A GB 2642649 A GB2642649 A GB 2642649A GB 667225 A GB667225 A GB 667225A
Authority
GB
United Kingdom
Prior art keywords
sulphonic acid
acid
sulphonic
benzene
benzidine
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
GB26426/49A
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 GB667225A publication Critical patent/GB667225A/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)
  • Coloring (AREA)

Abstract

Black leather dyestuffs are obtained by treating a trisazo dyestuff of the formula <FORM:0667225/IV (c)/1> with a benzoyl halide, benzene carboxylic acid anhydride or benzene sulphonic acid halide; in in the formula, A is the radical of an unsulphonated primary 1 : 3-diamine of the benzene series, B is the radical from a tetrazotized substantive 4 : 41-diaminodiphenyl and C is the radical from a diazotized aminobenzene sulphonic acid; 0.8-1.2 mols. of acylating agent are used for each mol. of dyestuff. The benzene rings in the dyestuff and the acylating agent may be substituted, e.g. by halogen, alkyl, alkoxy or nitro groups. Suitable acylating agents are mentioned. In the examples, trisazo dyestuffs are made from the following components and then acylated: (A) 1 : 3-diaminobenzene, 2 : 4 - diaminotoluene, and 2 : 4 - diamino - chlorobenzene; (B) benzidine, 3 : 31 - tolidine, 3 : 31 - dianisidine, 3 : 31-dichlorobenzidine, benzidine-3-sulphonic acid and benzidine-3 : 31-disulphonic acid; (C) sulphanilic acid, metanilic acid, p-toluidine-2-sulphonic acid, o-toluidine-4-sulphonic acid, aniline - 2 : 5 - disulphonic acid, 4 - chloraniline - 3 - sulphonic acid, o - anisidine - 5-sulphonic acid, 2 - chloraniline - 5 - sulphonic acid, 4 - acetylamino - aniline - 2 - and 3-sulphonic acids, 2 : 5-dichloraniline-4-sulphonic acid and 4-amino-m-xylene-5-sulphonic acid. A further example is given of the dyeing of leather.
GB26426/49A 1948-11-12 1949-10-14 Process for the production of black leather dyestuffs Expired GB667225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH667225X 1948-11-12

Publications (1)

Publication Number Publication Date
GB667225A true GB667225A (en) 1952-02-27

Family

ID=4527375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26426/49A Expired GB667225A (en) 1948-11-12 1949-10-14 Process for the production of black leather dyestuffs

Country Status (1)

Country Link
GB (1) GB667225A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265813A (en) * 1977-10-29 1981-05-05 Bayer Aktiengesellschaft Azo dyestuffs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265813A (en) * 1977-10-29 1981-05-05 Bayer Aktiengesellschaft Azo dyestuffs

Similar Documents

Publication Publication Date Title
GB667225A (en) Process for the production of black leather dyestuffs
GB918416A (en) Bleach-fast orange to red azo dyes
GB717011A (en) Treatment of dyestuffs of the anthraquinone series
GB779486A (en) Manufacture of polyazo-dyestuffs
US1855963A (en) Uniform dyeing of viscose
GB779487A (en) Manufacture of polyazo-dyestuffs
US2188774A (en) Leather dyed with monoazo dyestuffs
GB944072A (en) Novel monoazo dyestuffs containing a triazine nucleus and a process for the dyeing of cellulosic materials therewith
GB704043A (en) Manufacture of new trisazo-dyestuffs
GB685078A (en) New trisazo dyestuffs
GB982479A (en) New azo dyestuffs
US1976044A (en) Azo dye and method for its preparation
GB774612A (en) New trisazo dyestuffs
GB917725A (en) Azo dyestuffs
GB929052A (en) Process for the production of ú´-hydroxy-azo-naphthalenic compounds
GB493781A (en) Dyeing of furs, pelts and hair
GB611320A (en) Improvements in and relating to azo dyestuffs
GB578001A (en) Improvements relating to the manufacture of hexakisazo dyestuffs
GB732121A (en) New mono-azo dyestuffs
GB948160A (en) New monoazo dyestuffs
GB674291A (en) Improvements relating to polyazo dyestuffs for leather
GB189922886A (en) Improvements in the Manufacture of Colouring Matters.
GB578000A (en) Improvements relating to the manufacture of hexakisazo dyestuffs
GB282151A (en) The manufacture of new azo-dyestuffs
GB1491693A (en) Water-soluble trisazo compounds process for preparing them and their use for dyeing leather and fur