http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-458773-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b04f5b6a02051c94d6eaf190b751ed2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B29-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B29-20 |
| filingDate | 1935-06-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1936-12-28^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-458773-A |
| titleOfInvention | Process for the manufacture of water insoluble azodyestuffs |
| abstract | Water-insoluble azo dyes are made by coupling in substance or on the fibre diazo compounds of amines of the general formula <FORM:0458773/IV/1> [R = H or alkyl, x = O, NH or NR1 (R1 = hydrocarbon residue), y = O or S and the naphthalene nucleus may have further substituents] with arylides of aromatic o-hydroxy carboxylic acids. Dyes from the following components are specified in examples and a table <FORM:0458773/IV/2> the 2<1> : 3<1>-hydroxynaphthoyl compounds of a -and b - naphthylamine, 1 - amino - 2 - methyl-4-methoxybenzene, aniline, 2-toluidine, 4-anisidine, 2 : 5 - dimethoxyaniline, 2 : 4 - dimethylaniline, 1-amino-2-methyl-4-chlorobenzene and 1 -amino - 2 - methoxy - 5 - chlorobenzene, the o-toluidide of 2-hydroxyanthracene-3-carboxylic acid (cf. Specification 367,907) and 7<1> : 8<1>-benzo - 2<1> : 3<1> - hydroxycarbazoyl - 1 - amino - 2-methyl - 4 - methoxybenzene (cf. Specification 398,516). According to example 1 the diazo solution is neutralized with zinc oxide and zinc sulphate added to the dye-bath. Amines of the above constitution are obtained by treating a 1 : 2-naphthylenediamine or 1-amino-2-naphthol with phosgene or carbon disulphide, nitrating and reducing. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2458485-A |
| priorityDate | 1935-06-25^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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