GB492528A - Process for the manufacture of azodyestuffs - Google Patents

Process for the manufacture of azodyestuffs

Info

Publication number
GB492528A
GB492528A GB802937A GB802937A GB492528A GB 492528 A GB492528 A GB 492528A GB 802937 A GB802937 A GB 802937A GB 802937 A GB802937 A GB 802937A GB 492528 A GB492528 A GB 492528A
Authority
GB
United Kingdom
Prior art keywords
acid
naphthol
sulphonic
coupled
coupling
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
GB802937A
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 GB802937A priority Critical patent/GB492528A/en
Publication of GB492528A publication Critical patent/GB492528A/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
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/28—Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—
    • 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

Landscapes

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

Abstract

Azo dyes are prepared by combining tetrazo compounds prepared from aminobenzoylphenylenediamine-o-carboxylic acids of the general formula <FORM:0492528/IV/1> or their nuclear substitution products firstly with one molecular proportion of an o-hydroxy carboxylic acid capable of coupling, and then with one molecular proportion of an azo component coupling in a position adjacent to a hydroxy group. When the second coupling component contains a free amino group the dye may be diazotized and coupled with an o-hydroxyaryl carboxylic acid. Alternatively, the dyes are prepared by coupling an o-hydroxycarboxylic acid with a diazotized o-hydroxyazo dye of the formula <FORM:0492528/IV/2> (wherein R stands for the residue of an azo component, coupled in a position adjacent to the hydroxy group, containing no free amino group) or a nuclear substitution product thereof. In examples: (1) 5-p-aminobenzoyl-2-phenylenediamine-carboxylic acid is tetrazotized, coupled with one molecular proportion of salicylic acid and then with one molecular proportion of 1-naphthol-4-sulphonic acid, acetoacetic acid-o-chloranilide, 1-phenyl-3-methyl-5-pyrazolone, p-cresol, 2-acetamino- or 2 - phenylamino - 5 - naphthol - 7 - sulphonic acid, 2-phenylamino- or 2-amino-8-naphthol-6-sulphonic acid, o-chloraniline --> (acid) 1 - amino - 8 - naphthol - 4 - sulphonic acid, 5-nitro-2-aminobenzoic acid --> (acid) 2-amino - 5 - naphthol - 7 - sulphonic acid or 2 - p - aminobenzoylamino - 5 - naphthol-7-sulphonic acid; in the last case the dye is further diazotized and coupled with salicylic acid; (2) 5-nitro-2-aminobenzoic acid --> 1-naphthol-4-sulphonic acid is reduced, treated with p-nitrobenzoylchloride, reduced, diazotized and coupled with salicylic acid; (3) dyes from 4 - p - aminobenzoyl - 2 - phenylenediamine-carboxylic acid, salicylic acid and 2-benzoylamino- or 2-phenylamino-5-naphthol-7-sulphonic are prepared as in (1). Cresotinic acid is also specified as a first coupling component. The dyes may be aftertreated on the fibre with metallizing agents. Specification 338,111, [Class 2 (iii)], is referred to.
GB802937A 1937-03-18 1937-03-18 Process for the manufacture of azodyestuffs Expired GB492528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB802937A GB492528A (en) 1937-03-18 1937-03-18 Process for the manufacture of azodyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB802937A GB492528A (en) 1937-03-18 1937-03-18 Process for the manufacture of azodyestuffs

Publications (1)

Publication Number Publication Date
GB492528A true GB492528A (en) 1938-09-19

Family

ID=9844401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB802937A Expired GB492528A (en) 1937-03-18 1937-03-18 Process for the manufacture of azodyestuffs

Country Status (1)

Country Link
GB (1) GB492528A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744018C (en) * 1940-07-10 1944-01-11 Ig Farbenindustrie Ag Process for the preparation of disazo dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744018C (en) * 1940-07-10 1944-01-11 Ig Farbenindustrie Ag Process for the preparation of disazo dyes

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