GB255086A - Manufacture of mordant dyestuffs - Google Patents
Manufacture of mordant dyestuffsInfo
- Publication number
- GB255086A GB255086A GB17163/26A GB1716326A GB255086A GB 255086 A GB255086 A GB 255086A GB 17163/26 A GB17163/26 A GB 17163/26A GB 1716326 A GB1716326 A GB 1716326A GB 255086 A GB255086 A GB 255086A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- coupled
- nitraniline
- diazotized
- diazotization
- 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/02—Disazo dyes
- C09B35/039—Disazo dyes characterised by the tetrazo component
- C09B35/04—Disazo dyes characterised by the tetrazo component the tetrazo component being a benzene derivative
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
255,086. Durand & Huguenin Akt.- Ges. July 13, 1925, [Convention date] Disazo dyes are made by diazotizing p-phenylenediamine sulphonic acid in two stages, and coupling after each stage with an aryl-o-oxycarboxylic acid. For the first diazotization, either a monoacyl derivative or a p-nitraniline sulphonic acid is employed, the acyl group being saponified, or the nitro group reduced, in the product before proceeding to the second diazotization. In examples (1) the monoazo dyestuff from sodium p-nitraniline sulphonate and salicyclic acid is reduced with sodium disulphide and the amino body thus produced is diazotized and coupled with salicylic acid, and (2) the monoacetyl derivative of p-phenylenediamine sulphonic acid is diazotized, coupled with m-cresotinic acid, saponified by boiling with caustic soda lye, rediazotized, and coupled with salicylic acid. The products dye chromed wool brownish-orange tints, and give reddish-orange tints of good fastness when chrome-printed on cotton.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE255086X | 1925-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB255086A true GB255086A (en) | 1927-08-11 |
Family
ID=5961579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17163/26A Expired GB255086A (en) | 1925-07-13 | 1926-07-08 | Manufacture of mordant dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB255086A (en) |
-
1926
- 1926-07-08 GB GB17163/26A patent/GB255086A/en not_active Expired
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