GB511692A - Manufacture of azo-dyestuffs - Google Patents
Manufacture of azo-dyestuffsInfo
- Publication number
- GB511692A GB511692A GB5557/38A GB555738A GB511692A GB 511692 A GB511692 A GB 511692A GB 5557/38 A GB5557/38 A GB 5557/38A GB 555738 A GB555738 A GB 555738A GB 511692 A GB511692 A GB 511692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitraniline
- sulphonic acid
- diazotizing
- oxyethyl
- sulphonate
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
- C09B29/08—Amino benzenes
Abstract
511,692. Dyes. I.G. FARBENINDUSTRIE AKT.-GES. Feb. 22, 1938, No. 5557. Convention date, March 27, 1937. Sample furnished. [Class 2 (iii)] Azo-dyes which dye leather or wool red-brown of yellow-brown tints are made by diazotizing a p-nitraniline of the formula and coupling with an aniline of the formula where Z is any monovalent substituent except -SO3H, and R and R<1> are alkyl groups which may contain hydroxy and/or sulphonic groups as substituents. In examples, sodium 2-bromo- 4-nitraniline-6-sulphonate is diazotized and coupled with N-di-(#-oxyethyl)-m-toluidine or N -di -( #-oxyethyl) -m-chloraniline. A sample has been furnished under Sect. 2 (5) of a product prepared by diazotizing sodium 2-chloro-4-nitraniline-6-sulphonate and coupling with ethyl-m-tolyl-taurine. Specification 443,859 and French Specification 792,977 are referred to. 2-Bromo-4-nitraniline-6-sulphonic acid is obtained by brominating 4-nitraniline-6-sulphonic acid. 2-Chloro-4-nitraniline-6-sulphonic acid is obtained by chlorinating 4-nitraniline-6-sulphonic acid or by reacting 1.2-dichloro-4-nitrobenzene- 6-sulphonic acid with ammonia.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE511692X | 1937-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB511692A true GB511692A (en) | 1939-08-23 |
Family
ID=6547848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5557/38A Expired GB511692A (en) | 1937-03-27 | 1938-02-22 | Manufacture of azo-dyestuffs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB511692A (en) |
-
1938
- 1938-02-22 GB GB5557/38A patent/GB511692A/en not_active Expired
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