http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-720632-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06P1-122 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-0041 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06P1-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-00 |
| filingDate | 1952-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1954-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-720632-A |
| titleOfInvention | A process for producing coloured foils or threads of polyacrylonitrile |
| abstract | Foils and threads of polyacrylonitrile or a copolymer thereof with, for example, polyvinyl chloride or polyvinylidene chloride, are dyed by the ice colour process by incorporating the coupling component and the diazo component in the form of a triazene compound in a solution of the polymer, shaping the solution into foils or threads and then developing the dyestuff by the action of light, heat or an acid, or of a combination thereof employed either simultaneously or in succession. Development of the dye may be effected by diffused daylight, direct sunlight or ultra-violet radiation; by an inorganic acid or an acid salt thereof, e.g. hydrochloric, sulphuric, formic or citric acid, sodium bisulphate or aluminium sulphate, applied as a dilute, preferably an aqueous solution, of if the acid is volatile, as a vapour, preferably acid-laden steam; or by hot air, steam, a hot bath or passage over heated drums. Specified coupling components are p-cresol, b -naphthol, 3-hydroxy - carbazole, 2 - hydroxy - naphthalene-3 - carboylaminobenzene, 2 - hydroxy - naphthalene-3 carboxylic acid amide, 2-hydroxynaphthalene-3-carboxylic acid dibutylamide, 2 - hydroxy - carbazole - 3 - carboxylic acid ethyl ester, 2-hydroxy-anthracene-3-carboyl-11 - amino - 21 - methylbenzene, 2 - hydroxynaphthalene - 6 - sulphonic acid n - butylamide, 1 - phenyl - 3 - methyl - 5 - pyrazolone, 1 - acetoacetylamino - 2 : 5 - dimethoxy - 4 - chlorobenzene, 1 - benzoyl - acetylamino - 4 - benzoylamino - 2 : 5 - dimethoxybenzene and bis-(4 : 41 - acetoacetylamino) - 3 : 31 - dimethyldiphenyl. The triazenes are prepared by combining aromatic diazonium compounds free from water-soluble groups with aliphatic, cycloaliphatic, aromatic or heterocyclic compounds which contain either in the chain or at the nucleus a nitrogen atom carrying at least one hydrogen atom capable of being exchanged, e.g. diethylamine, sarcosine, methyltaurine, piperidine, 1-ethyl-aminobenzene-4-sulpho-2-carboxylic acid, proline, diethanolamine and methylglucamine. Numerous examples are given in which the solvent for the polymer is dimethyl formamide.ALSO:Coloured threads and foils of polyacrylonitrile, or a copolymer thereof with, for example, polyvinyl chloride or polyvinylidene chloride, are produced by incorporating a diazo component in the form of a triazene compound and a coupling component (see Group IV (c)) in a solution of the polymer, shaping the solution into fibres or foils and then developing the dyestuff by the action of light, heat or an acid, or of a combination thereof employed either simultaneously or in succession. Development of the dye may be effected by diffused daylight, direct sunlight or ultra-violet radiation; by an inorganic or organic acid or an acid salt thereof; or by hot air, steam, a hot bath or passage over heated drums. In examples the solvent for the polymer is dimethyl formamide. |
| priorityDate | 1951-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 61.