http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2341461-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_221dffee4634ee8664393baccbce8b8c |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G41-02 |
| filingDate | 2007-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2008-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b9517279ad060d992815172c812b928 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb9829ec521924282d88bb0d1691a2a3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a15141f918b954b2293bd49621746460 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25668020a2a846b1f967a123cf406a81 |
| publicationDate | 2008-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2341461-C1 |
| titleOfInvention | Method of obtaining high-purity tungsten oxide (iv) |
| abstract | FIELD: chemistry. n SUBSTANCE: proposed method of obtaining high-purity tungsten oxide (IV) involves hydrolysis of pure tungsten hexafluoride with subsequent separation of tungsten oxide from the solution of hydrolysis products and baking of the latter. Tungsten hexafluoride is purified by distillation with subsequent filtering of the tungsten hexafluoride stream through a fluoroplastic fibrous filter. Distillation of tungsten hexafluoride is carried out with rate of evaporation not exceeding 5·10 -4 g/(cm 2 ·s), and filtration is carried out when the stream of gaseous tungsten hexafluoride passes through a filter at linear speed of 0.3-1 cm/s. The separated tungsten oxide is baked in a stream of oxygen at 400-900°C. n EFFECT: obtaining a compound with high metal purity of ≤ 1·10 -5 %, suitable for use in making tellurite glass. n 3 cl, 2 ex, 1 tbl |
| priorityDate | 2007-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.