GB241527A - The manufacture of new secondary disazo dyestuffs - Google Patents
The manufacture of new secondary disazo dyestuffsInfo
- Publication number
- GB241527A GB241527A GB21684/25A GB2168425A GB241527A GB 241527 A GB241527 A GB 241527A GB 21684/25 A GB21684/25 A GB 21684/25A GB 2168425 A GB2168425 A GB 2168425A GB 241527 A GB241527 A GB 241527A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonic acid
- sulphonic
- acid
- aniline
- components
- 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
- C09B31/025—Disazo dyes containing acid groups, e.g. -COOH, -SO3H, -PO3H2, -OSO3H, -OPO2H2; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Secondary disazo dyes are prepared by coupling a sulphonated, unsulphonated, or carboxylated monoacidyl phenylenediamine or naphthylene diamine with an aminonaphtholether or a sulphonic acid thereof, diazotizing and coupling with a 1 : 8-dioxy or -aminooxy-naphthalene sulphonic acid. In an example, 4-acetylamino-1-aniline-2-sulphonic acid is diazotized and coupled in presence of acetate with 1-amino-2-ethoxynaphthalene-6-sulphonic acid, the intermediate product isolated, converted into its sodium salt, diazotized and coupled in presence of soda with acetyl-1 : 8-aminonaphthol-4-sulphonic acid. Other first components specified are m- or p-aminoacetanilide, 3-acetylamino-1-aniline-6-sulphonic or carboxylic acid, benzoyl-p-phenylenediamine-o-sulphonic acid, 4-oxalylamino-1-aniline-3-sulphonic acid, and 4-acetylnaphthylene-diamine or its 2-, 6-, or 7-monosulphonic acid and further middle components are 1-amino-2-naphtholether-7-sulphonic acids and the corresponding methyl ethers. The products give fast, easily dischargeable shades on silk. Tetrakisazo dyes are prepared by using the urea derivatives of phenylenediamines such as p-diamino-diphenylurea, as first components in the process described above.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE241527X | 1924-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB241527A true GB241527A (en) | 1926-04-01 |
Family
ID=5911589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21684/25A Expired GB241527A (en) | 1924-10-20 | 1925-08-29 | The manufacture of new secondary disazo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB241527A (en) |
-
1925
- 1925-08-29 GB GB21684/25A patent/GB241527A/en not_active Expired
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