GB589329A - Manufacture of azo-dyestuffs - Google Patents
Manufacture of azo-dyestuffsInfo
- Publication number
- GB589329A GB589329A GB6498/45A GB649845A GB589329A GB 589329 A GB589329 A GB 589329A GB 6498/45 A GB6498/45 A GB 6498/45A GB 649845 A GB649845 A GB 649845A GB 589329 A GB589329 A GB 589329A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- mol
- phenyl
- aminonaphthalene
- sulphonic acid
- 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
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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/16—Trisazo dyes
- C09B31/22—Trisazo dyes from a coupling component "D" containing directive hydroxyl and amino groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Azo dyestuffs are manufactured by coupling a diazo-compound of a disazo-dyestuff of the general formula <FORM:0589329/IV/1> (wherein one x and one y represent hydrogen and the other x and the other y represent hydrogen or a sulphonic acid group) with 2-amino-5-naphthol-7-sulphonic acid or a derivative thereof, especially its N-substitution products and also its derivatives capable of coupling twice in alkaline medium. Coupling may be effected either in acid or alkaline medium where both are possible. Examples describe the production of the dyestuffs p 1-amino-2 : 6 - dichloro - 4 - nitrobenzene --> 1 - amino - naphthalene-6- or -7-sulphonic acid or a mixture thereof --> 1-aminonaphthalene or its 6- or 7-sulphonic acid --> (alkaline) 2 : 5 : 7-aminonaphtholsulphonic acid or its N-phenyl-derivative, and the use of certain of the products for dyeing cotton and viscose artificial silk in grey shades. Other end components specified are: N - (41 - methoxy) - phenyl-, N - (41 - hydroxy - 31 - carboxy) - phenyl and N - benzoyl - J - acid, the secondary condensation product from 1 mol. of cyanuric chloride, 1 mol. of J-acid and 1 mol. of metanilic acid, the ternary condensation product from 1 mol. of cyanuric chloride, 1 mol. of J-acid, 1 mol. of metanilic acid and 1 mol. of aniline, J-acid urea and 5 : 51-dihydroxy-2 : 21-dinaphthylamine - 7 : 71 - disulphonic acid. Specifications 3673/00, [Class 2], 227,440, [Class 2 (ii)], and 299,791, [Class 2 (iii)], are referred to. The Specification as open to inspection under Sect. 91 comprises also the use, as end components, of other sulphonated aminonaphthalene derivatives, e.g. 1-phenyl- and 1-(41-methyl)-phenyl - aminonaphthalene - 8 - sulphonic acid, 2 : 8 : 6-aminonaphtholsulphonic acid and its N-acetyl, N-benzoyl and N-(41-methyl- or 41-methoxy)-phenyl derivatives, 1 : 5 : 7-aminonaphtholsulphonic acid and its N-phenyl derivative, 2 : 8 : 3 : 6- and 2 : 5 : 1 : 7-aminonaphtholdisulphonic acids, and the ternary condensation product from 1 mol. of cyanuric chloride, 1 mol. of 1 : 8 : 3 : 6- acid and 2 mols. of aniline. An additional example describes the preparation of the dyestuff 1-amino-2 : 6-dichloro - 4 - nitrobenzene --> 1 - aminonaphthalene - 7 - sulphonic acid --> 1 - aminonaphthalene-7-sulphonic acid --> the secondary condensation product from 1 mol. of cyanurie chloride, 1 mol. of 1 : 8 : 3 : 6-acid and 1 mol. of aniline. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH589329X | 1944-03-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB589329A true GB589329A (en) | 1947-06-17 |
Family
ID=4522037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6498/45A Expired GB589329A (en) | 1944-03-15 | 1945-03-15 | Manufacture of azo-dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB589329A (en) |
-
1945
- 1945-03-15 GB GB6498/45A patent/GB589329A/en not_active Expired
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