GB335523A - Manufacture of dyestuffs - Google Patents
Manufacture of dyestuffsInfo
- Publication number
- GB335523A GB335523A GB1259429A GB1259429A GB335523A GB 335523 A GB335523 A GB 335523A GB 1259429 A GB1259429 A GB 1259429A GB 1259429 A GB1259429 A GB 1259429A GB 335523 A GB335523 A GB 335523A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- mol
- product
- alkaline
- trisazo
- 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
- C09B31/02—Disazo dyes
- C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
335,523. Soc. of Chemical Industry in Basle, Straub, F., and Anderau, W. April 23, 1929. Addition to 307,705. Disazo and trisazo dyes and soluble metal compounds thereof. - The disazo and trisazo dyes obtainable by coupling with the monoazo dyestuff 2-amino-5-naphthol-7-sulphonic acid # (acid) 2-amino-5-naphthol-7-sulphonic acid either 1 mol. of an o-oxydiazo compound, or 2 mols. of an o-carboxydiazo compound, or 1 mol. of an o-oxydiazo compound containing no ooxyazo group, the use of diazo components containing o-oxycarboxy groups being excluded, are treated in an aqueous medium, in the course of their production, in substance, in the dyebath, or on the fibre, with an agent yielding chromium or yielding one or more suitable metals having atomic weights within the range 45-59, e.g. manganese, iron, cobalt, or nickel. In addition to the above metals other suitable metals, e.g. copper, may be introduced. The products give fast dyeings on animal, vegetable, or regenerated cellulose fibres from acid, neutral, or alkaline baths. The following examples are specified, (1) 1 Mol. of the dyestuff 2: 5: 7-acid # (acid) 2: 5: 7-acid is coupled (alkaline) with 1 mol. of diazotized 4-chloro-2-aminophenol, and the disazo product is heated for 25-30 hrs. under reflux with chromium fluoride solutions; the product dyes vegetable and regenerated cellulose fibres level grey shades from a neutral or alkaline Glauber's salt bath; if the final diazo component is replaced by 4-chloro-2- aminophenol-6-sulphonic acid the dyeings are blue-grey; if 4-nitro-2-aminophenol is used the dyeings are green-grey. (2) 1 Mol. of the dyestuff 2:5: 7-acid # (acid) 2:5: 7-acid is coupled (alkaline) with 2 mols. of diazotized anthranilic acid, and the trisazo product is boiled for 15-20 hrs. with chromium fluoride solution; the product dyes vegetable fibres violet shades from a neutral or alkaline bath; if the trisazo product is treated with a solution containing copper sulphate and chromium fluoride the product gives red-violet dyeings. (3) 1 Mol, of the dyestuff 2 : 5 : 7-acid # (acid) 2:5: 7-acid is coupled (alkaline) with 1 mol. of diazotized 4- chloro-2-aminophenol-6-sulphonic acid and 1 mol. of diazotized anthranilic acid, and the trisazo product is boiled for 24 hrs. with chromium fluoride solution; the product gives level bluegrey dyeings on cotton and viscose; if the trisazo product is treated with a solution containing copper sulphate and chromium fluoride or acetate the product gives violet or blueviolet dyeings. (4) 1 Mol. of the dyestuff 2:5: 7-acid # (acid) 2 : 5 : 7-acid is coupled (alkaline) with 1 mol. of diazotized 4-chloro-2- aminophenol and 1 mol. of diazotized 4- nitraniline-2-sulphonic acid, and the trisazo product is heated for 36 hrs. under reflux with chromium fluoride solution; the product dyes cotton and viscose level grey shades from a neutral or alkaline bath. Specification 26460/12, 16803/15, 271,897, 297,003, and 300,916 are referred to. Reference has been directed by the Comptroller to Specifications 16803/15, 271,897, 297,003, and 300,916.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1259429A GB335523A (en) | 1929-04-23 | 1929-04-23 | Manufacture of dyestuffs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1259429A GB335523A (en) | 1929-04-23 | 1929-04-23 | Manufacture of dyestuffs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB335523A true GB335523A (en) | 1930-09-23 |
Family
ID=10007524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1259429A Expired GB335523A (en) | 1929-04-23 | 1929-04-23 | Manufacture of dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB335523A (en) |
-
1929
- 1929-04-23 GB GB1259429A patent/GB335523A/en not_active Expired
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