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Modified pigments and methods for making and using the same

  • US 7,927,416 B2
  • Filed: 10/31/2007
  • Issued: 04/19/2011
  • Est. Priority Date: 10/31/2006
  • Status: Active Grant
First Claim
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1. A method of modifying a pigment, the method comprising:

  • sulfonating a pigment; and

    subsequently oxidizing the pigment to produce a modified pigment.

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