Title: Surface treatment for magnetic particle with chemical agent
Application Number: 85107789 Application Date: 1985.10.23
Publication Number: 1010554 Publication Date: 1987.04.22
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B22F1/02,H01F1/00
Applicant(s) Name: Film Factory No.1, Ministry of Chemical Industry Address:
Inventor(s) Name: Li Suqing
Attorney & Agent:
Abstract:
     This invention refers to a method for the surface treating of magnetic particle. An easily vaporized soluition of a certain chemical agent, for which titanate, phosphate or organo-silicon compound may be adopted, is passed into a reducing-oxidizing furnace or a closed vessel, and the applied agent will be adsorbed at the surface of the magnetic particle after the solvent is vaporized. The surface treated magnetic particle will show good lipophillcity, its dispersibility and filling performance in adhesive agent are improved as well. Magnetic tape made from the said magnetic particle offers a strong bound-magnetic film and a good smooth finish, and fine magnetic electroacoustic performance thereby.
Time: 6