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UV curable ferromagnetic compositions

  • US 6,897,248 B2
  • Filed: 02/24/2004
  • Issued: 05/24/2005
  • Est. Priority Date: 01/13/2000
  • Status: Expired due to Fees
First Claim
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1. A photocurable ferromagnetic composition comprising:

  • an acrylated epoxy oligomer;

    an ethylenically unsaturated monomer having Formula I;

    embedded imagewherein R1 is hydrogen or substituted or unsubstituted alkyl; and

    R2 is substituted or unsubstituted alkyl having more than 4 carbon atoms, cycloalkyl, cycloalkenyl, or substituted or unsubstituted aryl;

    a photoinitiator; and

    a magnetic powder, wherein the photocurable ferromagnetic composition includes less than about 5 weight percent volatile organic compounds.

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