http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-784665-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6b6fc801b5bfe5304ffa40d938db6e09 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B45-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B35-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B45-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B45-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B45-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B35-46 |
| filingDate | 1955-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1957-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-784665-A |
| titleOfInvention | Improvements relating to metallisable trisazo dyestuffs, and their use |
| abstract | The invention comprises dyestuffs of formula <FORM:0784665/IV (b)/1> where A is a benzene residue in which the OH and COOH groups are in the o-position to each other, Y is an alkoxy group, R is H or an alkyl, aralkyl or aryl group and X is the residue of a diazotized aromatic-heterocyclic amino compound containing nitrogen, which is bound to the azo group in an adjacent position to an N atom in the ring, or in the isocyclic ring in an adjacent position to a carbon atom linked with an N atom of the hetero ring. Aromaticheterocyclic amino compounds are primary amines with a heterocyclic or isocyclic heterocyclic substituent of aromatic character. The dyestuffs are made by coupling the tetrazotized diphenyl compound first with the salicylic acid and then, in an alkaline medium, optionally in the presence of a tertiary organic nitrogen base, with the appropriate monoazo-dyestuff. 4,41-Diamino - 3,31 - dimethoxy, -diethoxy and -dicarboxy-methoxy-diphenyl are specified diphenyls, o-hydroxy carboxylic acids mentioned are 3- and 4-methyl-, 3,6-dimethyl-, 3-chloro-, 4-methoxy-, -amino- and -acetamino-2-hydroxybenzene-1-carboxylic acids and salicylic acid, the latter being preferred. The monoazo dyestuffs used as second coupling components are made by acid coupling a 2-primary or -secondary amino-5-naphthol-7-sulphonic acid with a diazotized aromatic-heterocyclic amino compound. Preferably X is a residue in which the ring N atom is part of an imino group which may be formed by tautomeric displacements. Indicated as monoazo dyestuffs are those obtained from diazotized 5-amino-1,2,4-triazoles, 3-amino-pyrazoles, and -indazoles, 4-amino-imidazoles, 5-amino-1,2,3,4-tetrazoles, 7-amino-indoles, -indazoles, -benzimidazoles and -benztriazoles which may contain substituents such as halogen atoms and alkyl, aralkyl, phenyl, carboxyl, nitro-, acylamino, sulphonamide and alkyl sulphone groups, by acid coupling with 2-amino- and -methyl-, -ethyl-, -b -oxyethyl-, -b -aminoethyl-, -phenyl-, -(41-methyl-, -methoxy-, -hydroxy- and 41-hydroxy-31 - carboxy - phenyl-) amino - 5 - naphthol - 7 - sulphonic acids. Other indicated components for the monoazo dyestuffs are diazotized 2 amino - thiazoles, -benzothiazoles, -oxazoles, -benzoxazoles, 5 - amino - 1 - alkyl-, -aralkyl-or -phenyl - 1,2,3 - triazoles or -1,2,3,4 - tetrazoles, 4 - amino - 1 - and - 2 - alkyl-, -aralkyl- or -phenyl - benztriazoles, 4 - amino - piazothioles, -benzothiazoles and -benzoxazoles, 8-aminoquinolines, -cinnolines, -quinazolines and -quinoxalines. The dyestuffs dye cellulose fibres in violet-black shades which may be coppered to yield black dyeings. The dyestuffs may be metallized in substance or on the fibre. Examples are provided illustrating the preparation of the dyestuffs and their use in dyeing processes, additional components used together with certain of those specified alone being 2-isopropyl- and -amyl-, cyclohexyl-, and -benzyl-amino-5-naphthol-7-sulphonic acid and the glycine of 2-amino-5-naphthol-7-sulphonic acid. |
| priorityDate | 1954-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.