GB198415A - The manufacture of new vat dyestuffs - Google Patents
The manufacture of new vat dyestuffsInfo
- Publication number
- GB198415A GB198415A GB581922A GB581922A GB198415A GB 198415 A GB198415 A GB 198415A GB 581922 A GB581922 A GB 581922A GB 581922 A GB581922 A GB 581922A GB 198415 A GB198415 A GB 198415A
- Authority
- GB
- United Kingdom
- Prior art keywords
- isatin
- manufacture
- vat dyestuffs
- new vat
- naphthooxythiophene
- 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
Abstract
Thioindigoid dyes dyeing cotton in fast brown shades from the hydrosulphite vat are prepared by condensing 2 : 1-naphthooxythiophene, or a nuclear substitution product thereof such as a halogen derivative, with isatin, or a substituted isatin such as a 5 : 7-dihalogen isatin, or a cyclic o-diketone containing two or more nuclei, for example acenaphthenequinone, 1 : 2-diketohydrindene, 2 : 3-diketo-(1)-thionaphthene; b -naphthisatin is however excluded. In an example, 5 : 7-dichlorisatin is used, the condensation being effected in the presence of glacial acetic acid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB581922A GB198415A (en) | 1922-02-27 | 1922-02-27 | The manufacture of new vat dyestuffs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB581922A GB198415A (en) | 1922-02-27 | 1922-02-27 | The manufacture of new vat dyestuffs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB198415A true GB198415A (en) | 1923-05-28 |
Family
ID=9803183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB581922A Expired GB198415A (en) | 1922-02-27 | 1922-02-27 | The manufacture of new vat dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB198415A (en) |
-
1922
- 1922-02-27 GB GB581922A patent/GB198415A/en not_active Expired
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