http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003037004-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/G11B5-706 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-714 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-06 |
| filingDate | 2002-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80debc11213c9e0d0760e5393dcfd907 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53ba84172b45b1798e7ebe2f007bb56c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9706b69215a6b0563150a18e9586763e |
| publicationDate | 2003-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2003037004-A |
| titleOfInvention | Secondary aggregate of metal magnetic particles for magnetic recording and method for producing the same |
| abstract | (57) [Summary] [PROBLEMS] The present invention provides a method for producing a magnetic recording medium, Provided is a secondary aggregate of metal magnetic particles containing Fe as a main component, which has excellent dispersibility and has a reduced soluble salt as much as possible. SOLUTION: The average long axis diameter of the metal magnetic particles is 0.05 to 0.25 μm, a secondary content of metal magnetic particles having a sodium content of 20 ppm or less and a calcium content of 40 ppm or less, wherein the secondary aggregate has an average particle size of 300 to 800 μm, Upper limit is 2000μ The secondary agglomerate of magnetic metal particles for magnetic recording is a goethite particle powder or a hematite particle powder as a starting material, and the starting material is granulated and formed. The granulated product of the magnetic particles was obtained by crushing with a device having a function of crushing the granulated product of the metal magnetic particles with a rotor and a function of forcing through a screen, and crushing. After washing the secondary aggregate of metal magnetic particles with water, Obtained by drying. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005340672-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010037633-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4672287-B2 |
| priorityDate | 2001-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.