http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H04118902-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2b30aaab6b2cd23887e078e5c256e027 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-445 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-44 |
| filingDate | 1990-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97df812b1cf77c7b579bc03afe5dfc4f |
| publicationDate | 1992-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H04118902-A |
| titleOfInvention | Magnetic fluid whose discoloration has been prevented |
| abstract | PURPOSE: To effectively prevent a black color from being changed to a brown color by a method wherein thioglycolic acid, gluconic acid or their water-soluble salt is added to a water-based magnetic fluid which uses magnetite fine particles as dispersoids. n CONSTITUTION: When a magnetic fluid of a water solvent is prepared by using magnetite prepared in an ordinary reactor equipped with a stirrer, 5g of dodecyl benzene sodium sulfonate, 5g of sodium oleate, 5g of sodium naphthenate and 5g of sodium thioglycolate are added to 100 of magnetite, their pH is adjusted and a water-based magnetic fluid is obtained. The magnetic fluid is left at a standstill for four weeks in an oven at 52°C in a state that its 5cc have been filled in a pen-shaped container. After that, even when a line 60mm in length is drawn by the fluid, its color is not changed from the color of a line which has been drawn before the fluid is left at a standstill inside the heating oven. Even when the magnetic fluid is left at a standstill for 120 hours in the oven at 80°C in a state that it is diluted to 100 times, it is possible to prevent its discoloration. n COPYRIGHT: (C)1992,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102360676-A |
| priorityDate | 1990-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.