GB598797A - Production of anthraquinone compounds - Google Patents
Production of anthraquinone compoundsInfo
- Publication number
- GB598797A GB598797A GB23306/45A GB2330645A GB598797A GB 598797 A GB598797 A GB 598797A GB 23306/45 A GB23306/45 A GB 23306/45A GB 2330645 A GB2330645 A GB 2330645A GB 598797 A GB598797 A GB 598797A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amino
- per cent
- sulphoanthraquinone
- bromanthraquinone
- sulpho
- 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
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/16—Amino-anthraquinones
- C09B1/20—Preparation from starting materials already containing the anthracene nucleus
- C09B1/22—Dyes with unsubstituted amino groups
- C09B1/24—Dyes with unsubstituted amino groups sulfonated
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1-Amino-2-sulpho-4-bromanthraquinone is prepared by brominating 1-amino-2-sulphoanthraquinone in an aqueous acid containing an inorganic salt in such concentration that 1-amino-2-sulpho-4-bromanthraquinone precipitates as it forms without precipitation of the 1-amino-2-sulphoanthraquinone. Acids specified are hydrochloric and sulphuric acids, and salts specified are sodium and potassium chlorides, and sodium sulphate. The reaction mixture after bromination may be mixed with hot water to redissolve the 1-amino-2-sulpho-4-bromanthraquinone, and any 1-amino-2 : 4-dibromoanthraquinone filtered off. An example is given using sodium chloride and hydrochloric acid. The 1-amino-2-sulphoanthraquinone is preferably in a concentration of 2-4 per cent based on the weight of water present, and the bromine is preferably added as a 10 per cent solution in 15-20 per cent hydrochloric acid, 10 per cent excess bromine being used to compensate for any dibromination.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US598797XA | 1944-09-13 | 1944-09-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB598797A true GB598797A (en) | 1948-02-26 |
Family
ID=22025881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23306/45A Expired GB598797A (en) | 1944-09-13 | 1945-09-10 | Production of anthraquinone compounds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB598797A (en) |
-
1945
- 1945-09-10 GB GB23306/45A patent/GB598797A/en not_active Expired
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