GB237294A - - Google Patents
Info
- Publication number
- GB237294A GB237294A GB18583/25A GB1858325A GB237294A GB 237294 A GB237294 A GB 237294A GB 18583/25 A GB18583/25 A GB 18583/25A GB 1858325 A GB1858325 A GB 1858325A GB 237294 A GB237294 A GB 237294A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dianhydride
- diamines
- tetracarboxylic acid
- vat
- dyestuffs
- 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
- C09B57/00—Other synthetic dyes of known constitution
- C09B57/12—Perinones, i.e. naphthoylene-aryl-imidazoles
Abstract
Vat-dyestuffs are produced by condensing the dianhydride of naphthalene-1 : 4 : 5 : 8-tetracarboxylic acid, with o-diamines; the reaction may take place in the presence or absence of a solvent or diluent. In an example the dianhydride is condensed with o-phenylenediamine in nitrobenzene; the product dyes cotton in yellowish-red shades from a green vat. The Specification as open to inspection under Sect. 91 (3) (a) refers to the use of the tetracarboxylic acid itself or substitution products thereof, and also to the use of salts of the o-diamines. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE237294X | 1924-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB237294A true GB237294A (en) | 1926-10-21 |
Family
ID=5903019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18583/25A Expired GB237294A (en) | 1924-07-21 | 1925-07-21 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB237294A (en) |
-
1925
- 1925-07-21 GB GB18583/25A patent/GB237294A/en not_active Expired
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