http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2759117-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cd82333d441918b2ae5b50932716b5d3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G41-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G41-00 |
| filingDate | 1977-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b8f11f8666e5cd5b46489456afe4187 |
| publicationDate | 1979-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2759117-A1 |
| titleOfInvention | PROCESS FOR MANUFACTURING AMMONIUM AND ALKALIMETAL TUNGFRAMATES |
| abstract | Tungstates partic. ammonium tungstate, are produced from Fe-Mn-W ores and concentrates which do not contain alk. earth metals, by contacting the starting material with an aq. soln. contg. ammonium- and/or alkali metal cations and >1 anion of hydroxide, carbonate, hydrogen-carbonate, oxalate and phosphate in the presence of O2, H2O2, alkali metal peroxide or a mixt. of these, acting as oxidising agent. The temp. of the aq. soln. is 10 degrees C to the b.p. (30 degrees-70 degrees C). The method gives a higher yield and the prod. contains a lower amt. of impurities. Environmental pollution is avoided. Used for the prodn. of W and W compds. partic. WO3. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5035478-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5061599-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5348723-A |
| priorityDate | 1977-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 74.