http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1024486-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B57-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-0058 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B57-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-01 |
| filingDate | 1963-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1966-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1024486-A |
| titleOfInvention | Naphthalene dyestuffs |
| abstract | The invention comprises dyes having the general formula <FORM:1024486/C4-C5/1> in which R is a hydrogen atom, or an alkyl, aralkyl, cycloalkyl, or aryl radical, R1, R2 and R3 are lower alkyl radicals, X is an acid radical and the aromatic rings as well as the radicals R, R1, R2, R3 may contain non-ionic substituents. The dyes are obtained by reacting compounds of formula <FORM:1024486/C4-C5/2> with indole derivatives of general formula <FORM:1024486/C4-C5/3> in which the symbols have the meanings as above. The reactants are heated in an inert liquid generally at 20-150 DEG C. in presence of an agent causing loss of water from the reactants. The inert liquids include benzene, toluene chloroform, carbon tetrachloride, ethylene chloride, chlorobenzene, dichlorobenzene, dioxane or nitrobenzene, and water removing agents are phosphorus oxychloride, tri- and penta-chloride, thionyl and sulphuryl chlorides and phosgene or mixtures thereof. Friedel Crafts catalysts, e.g. aluminium, zinc, ferric and stannic chlorides or boron triflouride may also be used in the process. Specified non-ionic radicals include fluorine, chlorine, bromine, nitro, amino and acyl radicals, lower alkyl and alkoxy radicals, nitrile groups and non-ionic derivatives of carboxylic acids. In the case when R is hydrogen the dyestuffs obtained as salts can be converted to the corresponding bases which are subsequently quaternized with a compound R1X in which R1 is alkyl, aralkyl or cycloalkyl radical, and X is as above. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6835725-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7041354-B2 |
| priorityDate | 1962-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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