http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2333043-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9bf9b71a804bee6bb86d4a9f48513003 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D11-0047 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-33 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-361 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-2082 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-43 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-33 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-36 |
| filingDate | 2009-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d540cfa5ce53074c434c2d3d0f28a5f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dbf2d7b789cd6dfa83939f53704c83a0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c68d49f316eb9ee9ecaadfaee0664198 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_777348d80eb9d8ca5bc2dc5e38fc1e7f |
| publicationDate | 2011-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2333043-A1 |
| titleOfInvention | Method for removing copper sulphide (cu2s) deposited onto cellulose-based material in transformer |
| abstract | A method for removing copper sulphide (Cu 2 S) deposited onto electrically insulating materials of components in an electrical apparatus, such as a transformer or a bushing, wherein normally present electrically insulating oil has been substantially removed, and on other surfaces of such apparatus, comprising the following steps: providing a chemical treatment solution comprising a polar aprotic solvent, and preferably a chelating agent being able of forming complexes with copper from the surface of Cu 2 S deposited onto the insulating material, said chelating agent containing free electrons capable of forming a complexation with Cu, being at least a bidentate, but preferably a multidentate, i.e. being able of forming complexes with Cu from more than one point in the chelating agent, and having a solubility in the polar aprotic solvent of at least 5·10 -4 mol/L to allow extraction of copper by solvation of the formed copper-chelating complex; and optionally additional components, said chemical treatment solution being non-aqueous; subjecting the insulating material to the solution, preferably at a temperature of 30-130 °C, more preferably 50-90°C, for a predetermined time period, preferably 2 to 10 days, more preferably 3 to 7 days; and removing the chemical treatment solution from the insulating material. |
| priorityDate | 2009-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 140.