GB411132A - The manufacture of dyestuffs of the oxazine series - Google Patents
The manufacture of dyestuffs of the oxazine seriesInfo
- Publication number
- GB411132A GB411132A GB3379832A GB3379832A GB411132A GB 411132 A GB411132 A GB 411132A GB 3379832 A GB3379832 A GB 3379832A GB 3379832 A GB3379832 A GB 3379832A GB 411132 A GB411132 A GB 411132A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitro
- aminophenol
- nitrophenoxazone
- condensed
- acid
- 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
- C09B19/00—Oxazine dyes
- C09B19/02—Bisoxazines prepared from aminoquinones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
Oxazine dyes are prepared by condensing one or two molecular proportions of o-aminopheneols containing a nitro-group with 1.4-quinones of the benzene or naphthalene series which may be substituted by halogen. The products are either pigment dyestuffs, or vat dyes for wool if containing a keto group, or acid wool dyes if containing a sulphonic acid group. In examples: (1) chloranil (or bromanil) is condensed with 5-nitro-2-aminophenol giving 1 . 3 . 4 - trichloro - 7 - nitrophenoxazone-2- and a dichlorodinitrotriphendioxazine; using 4 - nitro - 2 - aminophenol 1 . 3 . 4 - trichlor - 6 - nitrophenoxazone - 2 is obtained; using 4 - methyl - 5 - nitro - 2 - aminophenol 1 . 3 . 4 - trichloro - methyl - 7 - nitrophenoxazone - 2 is obtained; using 4-chloro-5-nitro-2-aminophenol 1 . 3 . 4 . 6 - tetrachloro - 7 - nitrophenoxazone - 2 is obtained; using 4-nitro-2-aminophenol-6-sulphonic acid an intermediate is first obtained which is converted to a dioxazine dye by concentrated sulphuric acid; using 6 - nitro - 2 - aminophenol - 4 - sulphonic acid an intermediate is first obtained which is converted to a dioxazine dye by treatment with concentrated sulphuric acid; using 2-amino-4.6-dinitrophenol an intermediate is first obtained which is converted to a dioxazine compound by treatment with concentrated sulphuric acid; (2) 2.5-dibromoquinone is condensed with 5-nitro-2-aminophenol to give 3-bromo-7-nitrophenoxazone-2; (3) 2.6-dichlorquinone is condensed with 5-nitro-2-amino phenol to give 4-chloro-7-nitrophenoxazone-2. Specification 265,641, [Class 2 (iii)] is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3379832A GB411132A (en) | 1932-11-29 | 1932-11-29 | The manufacture of dyestuffs of the oxazine series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3379832A GB411132A (en) | 1932-11-29 | 1932-11-29 | The manufacture of dyestuffs of the oxazine series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB411132A true GB411132A (en) | 1934-05-29 |
Family
ID=10357563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3379832A Expired GB411132A (en) | 1932-11-29 | 1932-11-29 | The manufacture of dyestuffs of the oxazine series |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB411132A (en) |
-
1932
- 1932-11-29 GB GB3379832A patent/GB411132A/en not_active Expired
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