GB345130A - The manufacture of indigoid vat dyestuffs - Google Patents
The manufacture of indigoid vat dyestuffsInfo
- Publication number
- GB345130A GB345130A GB12110/30A GB1211030A GB345130A GB 345130 A GB345130 A GB 345130A GB 12110/30 A GB12110/30 A GB 12110/30A GB 1211030 A GB1211030 A GB 1211030A GB 345130 A GB345130 A GB 345130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methyl
- hydroxythionaphthene
- manufacture
- bromisatin
- chlor
- 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
- C09B7/06—Indone-thionapthene indigos
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Indigoid dyestuffs are obtained by condensing 6-methyl-3-hydroxythionaphthene with an a -derivative of a 5-chlor- or 5-bromisatin. In examples, 6-methyl-3-hydroxythionaphthene is condensed with the a -chlorides of 5-chlor- and of 5-bromisatin, the chlorides being obtained by treating the chlorbenzene solution of the isatin with phosphorus pentachloride. The products dye animal and vegetable fibres grey shades and are suitable for printing. 6-Methyl-3-hydroxythionaphthene is obtained by condensing 1-methyl-4-amino-5-mercaptobenzene (prepared by subjecting dehydrothiotoluidine to alkali fusion) with monochloracetic acid, and converting the resulting 1-methyl-4-aminobenzene-5-thioglycollic acid into the hydroxythionaphthene by known methods.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE345130X | 1929-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB345130A true GB345130A (en) | 1931-03-19 |
Family
ID=6254408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12110/30A Expired GB345130A (en) | 1929-04-22 | 1930-04-16 | The manufacture of indigoid vat dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB345130A (en) |
-
1930
- 1930-04-16 GB GB12110/30A patent/GB345130A/en not_active Expired
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