GB435513A - Manufacture of mordant dyestuffs - Google Patents
Manufacture of mordant dyestuffsInfo
- Publication number
- GB435513A GB435513A GB37073/34A GB3707334A GB435513A GB 435513 A GB435513 A GB 435513A GB 37073/34 A GB37073/34 A GB 37073/34A GB 3707334 A GB3707334 A GB 3707334A GB 435513 A GB435513 A GB 435513A
- Authority
- GB
- United Kingdom
- Prior art keywords
- benzene
- acid
- dinitrochlorbenzene
- chrome
- cotton
- 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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/11—Preparation of azo dyes from other azo compounds by introducing hydrocarbon radicals or substituted hydrocarbon radicals on primary or secondary amino groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Abstract
Mordant dyeing azo-dyes of the formul R1N = NR2NHRx or R1N = NR3N = NR4NHRx wherein R1 stands for a benzene nucleus containing a hydroxyl group and a carboxyl group in o-position to one another, R2 stands for a sulphonated benzene or sulphonated naphthalene nucleus, R3 and R4 stand for benzene or naphthalene nuclei of which at least one is sulphonated, and Rx stands for an unsulphonated benzene nucleus advantageously containing negative groups, are prepared (a) by reacting an aminoazo compound of the formul R1N = NR2NH2 or R1N = NR3N = NR4NH2 (wherein R1, R2, R3 and R4 have the aforesaid meanings) with an unsulphonated benzene derivative containing an easily exchangeable halogen atom; or (b) by first reacting one amino group of a diamino compound of the general formula NH2R2NH2 or NH2R3N = NR4NH2 (wherein R2, R3 and R4 have the aforesaid meanings) with an unsulphonated benzene derivative containing an easily exchangeable halogen atom, then diazotizing the second amino group and coupling the diazo-compound with an o-oxycarboxylic acid of the benzene series. In examples: (1) the azo dye 4-nitraniline - 2 - sulphonic acid --> salicylic acid is reduced to convert the nitro group to amino and condensed with 2,4-dinitrochlorbenzene in presence of sodium acetate or calcium carbonate; the dye yields reddish-yellow shades chrome-printed on cotton; picryl chloride may be used in place of 2,4-dinitrochlorbenzene; (2) m-phenylenediamine is condensed with 2,4-dinitrochlorbenzene, the product diazotized and coupled with salicylic acid; the dye yields yellow shades chrome-printed on cotton; as coupling components in place of salicylic acid there may be used o- and m-cresotinic acids, chlorsalicylic acid; (3) 3-nitraniline-4-sulphonic acid is diazotized and coupled with m-toluidine, the nitro group in the resulting product reduced to amino by means of sodium sulphide and the product condensed with dinitrochlorbenzene and finally coupled with salicylic acid; it yields yellow-brown shades chrome-printed on cotton; (4) the aminoazo dye p-aminosalicylic acid --> 1-naphthylamine-6- or 7-sulphonic acid is condensed with dinitrochlorbenzene; the resulting dye yields brown shades chrome printed on cotton.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE435513X | 1933-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB435513A true GB435513A (en) | 1935-09-23 |
Family
ID=6506781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37073/34A Expired GB435513A (en) | 1933-12-27 | 1934-12-27 | Manufacture of mordant dyestuffs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB435513A (en) |
-
1934
- 1934-12-27 GB GB37073/34A patent/GB435513A/en not_active Expired
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