http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H06171952-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5fb9798bf05293ffe6d2e0fde58c3cdb |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-11 |
| filingDate | 1993-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_676b66b7b53538b77b877026317b532a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_804317312fd3b60153cae1cc2472b70e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9bd9184c83d2eff54d806a8afda5f18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80debc11213c9e0d0760e5393dcfd907 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e69061e791a7e1f7b78b68eb679403b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cacf3ab90963f3e498f90969cb3125a9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_441d7039fe29971b1b693bacffb02061 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c531e71c6875e3b351a2fa760719a06d |
| publicationDate | 1994-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H06171952-A |
| titleOfInvention | Manufacturing method of spindle-shaped magnetic iron oxide particles |
| abstract | (57) [Summary] [Purpose] The particle size is uniform, dendritic particles are not mixed, and the axial ratio (major axis: minor axis) is small, and high coercive force and excellent coercive force distribution. Provided is a method for industrially obtaining a spindle-shaped maghemite particle powder having the following features. Composition: In producing spindle-shaped goethite particles by oxidizing an aqueous solution containing FeCO 3 obtained by reacting an aqueous solution of ferrous salt with an alkali carbonate, the aqueous solution of ferrous salt, the carbonate The FeCO before the oxidation reaction is performed by aeration with an alkali- and oxygen-containing gas. The water-soluble silicate was added to either of the aqueous solutions containing 3 On the other hand, by adding 0.87 to 7.70 atomic% in terms of Si, spindle-shaped goethite particles containing Si are generated, and the particles or Si obtained by heating and dehydrating the particles. After heat reduction hematite particles exhibited spindle type containing, further, the maghemite particles exhibited spindle type obtained by oxidation denatured by the Co or Co and Fe 2+ Co or Co and Fe 2+ The spindle-shaped maghemite particles containing Si modified in (1) are obtained. |
| priorityDate | 1985-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.