| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-103
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C3-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K3-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-36 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-148
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-1435 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-14 |
| filingDate |
2004-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2005-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2005-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-3691048-B1 |
| titleOfInvention |
Method for producing high purity colloidal silica |
| abstract |
[PROBLEMS] To produce a high-purity colloidal silica having a high efficiency of removing metallic impurities such as Cu, Mn, Ni, Fe, Zn and Cr contained in an alkali silicate aqueous solution as a raw material for colloidal silica and having a low cost. Is to provide. An active silicic acid aqueous solution containing a chelating agent having a nitrogen atom or a phosphorus atom is brought into contact with an anion exchanger to have a high purity active silicic acid aqueous solution production step for obtaining a high purity active silicic acid aqueous solution. A method for producing high-purity colloidal silica. And a method for producing high-purity colloidal silica, further comprising a step of purifying the aqueous colloidal silica solution containing the chelating agent in contact with an anion exchanger. [Selection figure] None |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020262406-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111788153-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114455596-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114007981-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113929102-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113929102-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007214173-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007033950-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2890894-A1 |
| priorityDate |
2004-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |