GB301197A - Improvements in the manufacture and production of vat dyestuffs - Google Patents
Improvements in the manufacture and production of vat dyestuffsInfo
- Publication number
- GB301197A GB301197A GB3121827A GB3121827A GB301197A GB 301197 A GB301197 A GB 301197A GB 3121827 A GB3121827 A GB 3121827A GB 3121827 A GB3121827 A GB 3121827A GB 301197 A GB301197 A GB 301197A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aminobenzanthrones
- sulphuric acid
- aminobenzanthrone
- potash
- gives
- 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
- C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
- C09B3/02—Benzathrones
- C09B3/06—Preparation from starting materials already containing the benzanthrone nucleus
- C09B3/10—Amino derivatives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
301,197. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Nov. 21, 1927. Addition to 289,980. Dibenzanthrone and isodibenzanthrone dyes are obtained by alkali fusion of 5-, 6-, 7-, and 8- aminobenzanthrones. In examples, dyes giving a bordeaux-red solution in sulphuric acid are obtained by alkali fusion, with caustic potash at 230‹ C., or 5-, 6-, and 7-aminobenzanthrones, and dye blue, green-grey, and violet respectively. A mixture of the two last products in the proportions of 4 to 1 respectively dyes cotton a deep black. By alkali fusion with 55 per cent alcoholic potash at 150‹ C., 5-aminobenzanthrone gives the same product as with caustic potash alone at 230‹ C., but 6-aminobenzanthrone, with alcoholic potash at 170‹ C., gives a dye soluble in sulphuric acid to a grey-green solution, and dyeing grey-violet, and 8-aminobenzanthrone, with alcoholic potash at 150‹ C., gives a dye soluble in sulphuric acid to a green solution, and dyeing greyish-blue. Specifications 12518/06 and 254,742 are referred to. Aminobenzanthrones. 5-, 6-, 7-, and 8-Aminobenzanthrones are obtained from the corresponding halogen derivatives by the action of ammonia at elevated temperatures. Chlorbenzanthrone. a-Chloranthraquinone is condensed with glycerine and sulphuric acid, and the mixture of 4-, 5-, and 8-chlorbenzanthrones separated by fractional crystallization. They melt at 152‹ C., 183‹ C., and 174‹ C. respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3121827A GB301197A (en) | 1927-11-21 | 1927-11-21 | Improvements in the manufacture and production of vat dyestuffs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3121827A GB301197A (en) | 1927-11-21 | 1927-11-21 | Improvements in the manufacture and production of vat dyestuffs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB301197A true GB301197A (en) | 1928-11-29 |
Family
ID=10319797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3121827A Expired GB301197A (en) | 1927-11-21 | 1927-11-21 | Improvements in the manufacture and production of vat dyestuffs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB301197A (en) |
-
1927
- 1927-11-21 GB GB3121827A patent/GB301197A/en not_active Expired
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