GB393873A - Manufacture of azo-dyestuffs - Google Patents
Manufacture of azo-dyestuffsInfo
- Publication number
- GB393873A GB393873A GB34823/32A GB3482332A GB393873A GB 393873 A GB393873 A GB 393873A GB 34823/32 A GB34823/32 A GB 34823/32A GB 3482332 A GB3482332 A GB 3482332A GB 393873 A GB393873 A GB 393873A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dyestuffs
- dyestuff
- acetic anhydride
- acylating
- coupling
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
-
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
- C09B29/08—Amino benzenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Monoazo dyes suitable for dyeing cellulose esters and ethers, natural or artificial resins, lacquers or varnishes, are made by coupling an aromatic diazo-compound which contains no hydroxyl group in o-position to the diazo group with a 1-amino-3-oxybenzene having free 4- and 6-positions so that coupling occurs in 4-position and acylating the dyestuffs thus obtained. Greenish-yellow to orange non-phototropic shades are obtained. The dyestuffs may be made into pastes or dry preparations with suitable dispersing agents. Suitable acylating agents are formic acid, acetic anhydride or acetylchloride, propionic anhydride, ethyl- or methylester of chlorformic acid, or a cyanate. In examples (1) and (2) aniline or p-anisidine --> (neutral) m-aminophenol is treated with acetic anhydride, (3) the dyestuff in (2) is dissolved in finished nitro-cellulose lacquer, (4) acetate silk yarn is dyed with a dispersion of the dyestuff of (2).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH393873X | 1931-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB393873A true GB393873A (en) | 1933-06-15 |
Family
ID=4514023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34823/32A Expired GB393873A (en) | 1931-12-21 | 1932-12-08 | Manufacture of azo-dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB393873A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2759103A1 (en) * | 1977-12-30 | 1979-07-12 | Bayer Ag | AZO DYES |
-
1932
- 1932-12-08 GB GB34823/32A patent/GB393873A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2759103A1 (en) * | 1977-12-30 | 1979-07-12 | Bayer Ag | AZO DYES |
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