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Method and system for magnetic actuated milling for pigment dispersions

  • US 9,234,090 B2
  • Filed: 04/10/2013
  • Issued: 01/12/2016
  • Est. Priority Date: 04/10/2013
  • Status: Active Grant
First Claim
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1. A method for preparing a pigment dispersion, comprising:

  • a) adding a pigment, a surfactant, and a solvent into an impellerless vessel;

    b) adding magnetic particles into the impellerless vessel; and

    c) applying a varying magnetic field in a circular motion on a micro or nano scale to move the magnetic particles to mill down pigment particle size, in the impellerless vessel.

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