Title: Magnetic particle with hydrophilic polymer coating, preparation and water-base magnetic flowing deformating liquid therefrom
Application Number: 200410060854 Application Date: 2004.09.14
Publication Number: 1613919 Publication Date: 2005.05.11
Approval Pub. Date: 2006.04.26 Granted Pub. Date: 2006.04.26
International Classifi-cation: C09C3/10,C10M125/10,C10N40/14
Applicant(s) Name: Wuhan Science Address: 430070
Inventor(s) Name: Guan Jianguo, Li Lichun
Attorney & Agent: tang wanrong
Abstract:
     Magnetic particles packed by the hydrophilic polymer of inorganic oxidate are prepared by: putting the 100 portion of compound particle, 0.1-5.0 portion of alkoxy metallic compound and 0.05-5.0 portion of hydrophilic macromolecular having an alkoxy-Si in the end into 50-10000 portion of N-N-dimethylformamide solvent, then dropping the alkalily to abjust the pH when mixing the solution, purifying and collecting the solid by magnetic separating and water scrubbing to obtain solid products after drying. The products have good oxidation resistance and soft magnetism, and the process is very easy to do.
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