http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-0136167-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_694f81756e92c09f407b691917f41467 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_831f0ca5262b5b0ef6fe96129f29dd6c |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-02 |
| filingDate | 1994-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1998-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_781d62f275bc55ce6d704faad6ab0348 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a3399d06af96b4a4658670f6205d88b3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a039ba0d4e919f795f0034d6f219272e |
| publicationDate | 1998-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-0136167-B1 |
| titleOfInvention | Manufacturing method of acicular alpha iron oxide with excellent particle characteristics |
| abstract | The present invention uses ferric salt as a starting material and hydrothermal reaction by adding an appropriate amount of tartaric acid to an aqueous solution of ferric hydroxide prepared therefrom, which is suitable for high-density recording materials. It is to provide a method for producing iron oxide, the purpose of which is.n n n The present invention provides a method for producing acicular iron oxide, comprising: preparing an aqueous ferric hydroxide solution by alkaline neutralization in an aqueous ferric salt solution as a starting material; Preparing a slurry by adding tartaric acid to the aqueous solution of ferric hydroxide in the range of 1 × 10 −5 −1 × 10 −4 molar amount as the molar amount of the iron atom of the ferric hydroxide; Adjusting the basicity of the slurry solution in the range of 9.0-12.0; And it relates to a method for producing a needle-like α-iron oxide having excellent particle characteristics, characterized in that it comprises a step of hydrothermally reacting the slurry solution in the temperature range of 100-160 ℃. |
| priorityDate | 1994-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.