GB281410A - Improvements in or relating to dyeing with azo dyes - Google Patents
Improvements in or relating to dyeing with azo dyesInfo
- Publication number
- GB281410A GB281410A GB2205826A GB2205826A GB281410A GB 281410 A GB281410 A GB 281410A GB 2205826 A GB2205826 A GB 2205826A GB 2205826 A GB2205826 A GB 2205826A GB 281410 A GB281410 A GB 281410A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- coupling
- naphthol
- sulphonic acid
- sulphonic
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/02—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
281,410. British Dyestuffs Corporation, Ltd., Baddiley, J., Chorley, P., and Brightman, R. Sept. 7, 1926. Azo dyes.-Regenerated cellulose materials, e.g. viscose silk, are dyed in level shades with the dyes obtained by coupling diazotized aromatic amines and their derivatives, including sulphonic and carboxylic acids, wth 2-amino-8-naphthol sulphonic acids or with their N-substituted derivatives. other than those described in Specifications 270,446 and 270,883. In addition to monoazo dyes, the disazo dyes obtained by coupling one molecular proportion of a diazo compound with a sulphonic acid of 2-amino-8- naphthol or its N-substituted derivatives in acid solution, and then coupling the product in alkaline solution with a further molecular proportion of the same or a different diazo compound, may be used. For example the disazo dye obtained by coupling 2-phenylamino-8- naphthol-6-sulphonic acid with p-nitraniline-osulphonic acid (acid) and a-naphthylamine (alkaline) dyes viscose silk a blue violet shade, while the corresponding disazo dye from 8-oxy-2 : 2<1>-dinaphthylamine-6-sulphonic acid gives a blue shade. In an example of the dyeing process, the dyebath is made up with the dyestuff from diazotized dehydrothio-p-toluidine sulphonic acid and 2-phenylamino-8-naphthol-6-sulphonic acid (alkaline coupling), soap and glauber's salt are added, and the regenerated cellulose silk goods are dyed nearly at the boiling point; after rinsing and drying a level deep brown shade is obtained. The shades obtained on viscose silk with the following monoazo dyes are tabulated.- the dyes obtained by coupling 2 : 8 : 6-acid in alkaline solution with the diazo compounds of p-chloraniline and o-anisidine ; those obtained by coupling 2-phenylamino-8-naphthol-6-sulphonic acid in alkaline solution with the diazo compounds of 2 : 5-dichloraniline, 2-chlor-4-toluidine- 5-sulphonic acid, and dianisidineoxamic acid, and in acid solution with the diazo compounds of 5-nitro-2-amisidine and naphthionic acid; the dye obtained by coupling 8-oxy-2: 1<1>-dinaphthylamine-6-sulphonic acid with diazotized aniline in alkaline solution: the dyes obtained by coupling 8-oxy-2 : 2<1>-dinaphthylamine-6-sulphonic acid with the diazo compounds of m-aminobenzoic acid and dehydrothio-p-toluidine sulphonic acid in alkaline solution; those obtained by coupling 8 - oxy - 2 : 2'-dinaphthylamine-3 : 6-disulphonic acid with diazotized 2: 5-dichloraniline in acid solution and with 4-chlor-2-anisidine and 4: 4<1>- nitroaminodiphenyl sulphide in alkaline solution: the dyes obtained by coupling diazotized dehydrothio-p-toluidine sulphonic acid (alkaline) with 2-o-anisoylamino-8-naphthol-6-sulphonic acid and with 2-2<1> : 4<1>-dinitrophenylamino-8-naphthol- 6-sulphonic acid; the dye obtained by coupling dia,zotized p-chloraniline (alkaline) with 2-pchlorphenylamino-8-naphthol-6-sulphonic acid: and the dye obtained by coupling diazotized p-aminoacetanilide (alkaline)with 2-ethylamino-8- naphthol-6-sulphonic acid. 8-Oxy-2 : 1<1>-and - 2 : 2<1>-dinaphthylamine-6-sulphonic acids are obtained by heating 2 : 8 : 6-acid with sodium bisulphite and a- or #-naphthylamine. 8-Oxy-2 : 2<1>-dinaphthylamine-3 : 6 - disulphonic acid is obtained by heating 2-amino-8-naphthol- 3 : 6-disulphonic; acid with sodium bisulphite and #-naphthylamine. 2 - p-chlorphenylamino-8-naphthol-6-sulphonic acid is obtained by heating 2 : 8 : 6-acid with sodium bisulphite and p-chloraniline.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2205826A GB281410A (en) | 1926-09-07 | 1926-09-07 | Improvements in or relating to dyeing with azo dyes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2205826A GB281410A (en) | 1926-09-07 | 1926-09-07 | Improvements in or relating to dyeing with azo dyes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB281410A true GB281410A (en) | 1927-12-07 |
Family
ID=10173219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2205826A Expired GB281410A (en) | 1926-09-07 | 1926-09-07 | Improvements in or relating to dyeing with azo dyes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB281410A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE767692C (en) * | 1939-06-04 | 1954-02-08 | Ig Farbenindustrie Ag | Process for the production of azo dyes |
-
1926
- 1926-09-07 GB GB2205826A patent/GB281410A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE767692C (en) * | 1939-06-04 | 1954-02-08 | Ig Farbenindustrie Ag | Process for the production of azo dyes |
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