A Magneto-Resistive Polymer Composition

Patent Status: 

Patent Granted

Indian Patent Applicaton No: 

934/DEL/2000

Grant: 

216966

Date Filed: 

13.10.2000

Date Granted: 

20.03.2008

Department: 

Patent Category: 

Overview: 

A magneto-resistive polymer composition for use in magnetic storage devices and the process for the preparation of the same to provide a matrix for conducting and magnetic fillers to form a blend which in turn shows the desired magneto-resistive property.

Key Features: 

  • A magnetic polymer composite comprising 60-90% by weight of polymer, 10-40% by weight of magneto resistive alloys and 5-30% by weight of additive is reported.
  • Prepared by the process by dissolving 60-90% by weight of the polymer in a solvent to obtain a clear colourless solution.
  •  Adding the alloy and additive to this solution and agitating the mixture at a frequency of 15-20kHz to get a dispersed magneto resistive alloy in the said polymer solution.

Applications: 

  • Used as polymer magneto resistive alloy composite coating in avionic tube applications.
  • Recording media industry, Tape material manufacturers.
     

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