GB442167A - The manufacture of dyestuffs of the thioindigo series - Google Patents
The manufacture of dyestuffs of the thioindigo seriesInfo
- Publication number
- GB442167A GB442167A GB2448534A GB2448534A GB442167A GB 442167 A GB442167 A GB 442167A GB 2448534 A GB2448534 A GB 2448534A GB 2448534 A GB2448534 A GB 2448534A GB 442167 A GB442167 A GB 442167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethyl
- hydroxythionaphthene
- halogen
- derivative
- dyestuffs
- 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
- C09B7/00—Indigoid dyes
- C09B7/10—Bis-thionapthene indigos
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Thioindigo dyestuffs are prepared by oxidizing 4-ethyl-6-halogen-3-hydroxythionaphthene or its 2-carboxylic acid derivative or by condensing 4-ethyl-6-halogen-3-hydroxythionaphthene or a reactive 2-derivative thereof with 4-methyl-6-halogen-3-hydroxythionaphthene or a reactive-2-derivative thereof, the two components being in different states of oxidation. In examples: (1) the sodium salt of 4-ethyl-6-chlorhydroxythionaphthene-2-carboxylic acid is oxidized with sulphur in a caustic soda lye; the hydroxythionaphthene may be obtained from 2-amino-1-ethyl-5-chlorbenzene in the usual manner; (2) 4-ethyl-6-chlorhydroxythionaphthene is condensed in glacial acetic acid with 4-methyl-6-chlordiketodihydrothionaphthene - 2 - p - dimethylaminoanil. The dyestuffs containing bromine in the 6-position are mentioned; they dye cotton or wool yellowish scarlet shades. 1-Ethyl-2-amino-5-chlorbenzene is prepared by chlorinating 1 - ethyl - 2 - aminobenzene, after acetylation, by means of sodium chlorate and hydrochloric acid in glacial acetic acid and finally saponifying to remove the acetyl group.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2448534A GB442167A (en) | 1934-08-24 | 1934-08-24 | The manufacture of dyestuffs of the thioindigo series |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2448534A GB442167A (en) | 1934-08-24 | 1934-08-24 | The manufacture of dyestuffs of the thioindigo series |
Publications (1)
Publication Number | Publication Date |
---|---|
GB442167A true GB442167A (en) | 1936-02-04 |
Family
ID=10212417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2448534A Expired GB442167A (en) | 1934-08-24 | 1934-08-24 | The manufacture of dyestuffs of the thioindigo series |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB442167A (en) |
-
1934
- 1934-08-24 GB GB2448534A patent/GB442167A/en not_active Expired
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