GB302770A - Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product - Google Patents
Manufacture of new ortho-oxyazo-dyestuffs and an intermediate productInfo
- Publication number
- GB302770A GB302770A GB2875727A GB2875727A GB302770A GB 302770 A GB302770 A GB 302770A GB 2875727 A GB2875727 A GB 2875727A GB 2875727 A GB2875727 A GB 2875727A GB 302770 A GB302770 A GB 302770A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitro
- aminophenol
- oxyazo
- compounds
- acid
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
302,770. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). Oct. 28, 1927. 2 : 8 - Dioxynaphthalene-6-carboxylic acid is prepared by fusing 2-naphthol-8-sulpho-6-carboxylic acid with caustic alkali. Specification 291,965 is referred to. o-Oxyazo-dyes are obtained by combining aromatic oxydiazo compounds with the above intermediate. They are mordant dyestuffs dyeing wool brownish tints turning to fast brown to black shades when after-chromed. Diazo compounds of the following are specified :-4-chlor-2- aminophenol. 4-nitro - 2 - aminophenol, p-nitro-oaminosalicylic acid, picramic acid, 5-nitro-3- amino - p - cresol, p-chlor-o-nitro-o-aminophenol, nitroamino-phenol sulphonic acids, o-aminonaphthol sulphonic acids and o-hydroxyaminoazo compounds.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2875727A GB302770A (en) | 1927-10-28 | 1927-10-28 | Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2875727A GB302770A (en) | 1927-10-28 | 1927-10-28 | Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product |
Publications (1)
Publication Number | Publication Date |
---|---|
GB302770A true GB302770A (en) | 1928-12-27 |
Family
ID=10280643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2875727A Expired GB302770A (en) | 1927-10-28 | 1927-10-28 | Manufacture of new ortho-oxyazo-dyestuffs and an intermediate product |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB302770A (en) |
-
1927
- 1927-10-28 GB GB2875727A patent/GB302770A/en not_active Expired
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