UV curable ferromagnetic compositions
First Claim
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1. A photocurable ferromagnetic composition comprising:
- an acrylated epoxy oligomer;
an ethylenically unsaturated monomer having Formula I;
wherein 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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Abstract
The present invention discloses an ultraviolet light curable ferromagnetic composition and method for making such a composition that may be used to produce a ferromagnetic coating on a suitable substrate. These coatings may be used to produce printed capacitors and inductors. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the active layer after curing.
121 Citations
19 Claims
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1. A photocurable ferromagnetic composition comprising:
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an acrylated epoxy oligomer;
an ethylenically unsaturated monomer having Formula I;
wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A photocurable ferromagnetic composition comprising:
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an acrylated epoxy oligomer present in an amount from 2% to 6% of the weight of the ferromagnetic composition;
an isobornyl acrylate monomer present in an amount from about 15% to 25% of the total weight of the ferromagnetic composition;
a photoinitiator present in an amount from 1% to 10% of the weight of the ferromagnetic composition; and
a magnetic powder present in an amount from 20% to 60% of the weight of the ferromagnetic composition. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification