UV curable transparent conductive compositions
AssigneeAllied PhotoChemical, Inc.
InventorRoy C. Krohn
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Abstract
The present invention discloses an ultraviolet light curable transparent conductive composition and method for making such a composition that may be used to produce a transparent conductive coating on a suitable substrate. These coatings may be used in such applications as touch screens, membrane switches, TV screens, and VCRs. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the active layer after curing.
Claims20
A photocurable transparent conductive composition comprising:
- at least one aliphatic acrylated oligomer selected from an aliphatic urethane diacrylate or aliphatic urethane triacrylate;
- an acrylated epoxy oligomer;
- an isobornyl acrylate monomer;
- an electrically conductive powder present in an amount from 20% to 50% of the weight of the transparent conductive composition;
- and
- a photoinitiator,
- wherein the photocurable transparent conductive composition is curable by ultraviolet light into a transparent conductive coating.
A method for coating a substrate with a photocurable transparent conductive composition, the method comprising:
- applying a transparent conductive composition to the substrate, wherein the transparent conductive composition includes:
- an aliphatic acrylated oligomer selected from an aliphatic urethane diacrylate or aliphatic urethane triacrylate present in an amount from 10% to 40% of the weight of the transparent conductive composition;
- an acrylated epoxy oligomer present in an amount from 3% to 11% of the weight of the transparent conductive composition;
- an isobornyl acrylate monomer present in an amount from 10% to 40% of the weight of the transparent conductive composition;
- a photoinitiator present in an amount from 2% to 10% of the weight of the transparent conductive composition;
- a flow promoting agent present in an amount from 0.1% to 8% of the weight of the transparent conductive composition;
- and
- an electrically conductive powder present in an amount from 20% to 50% of the weight of the transparent conductive composition and
- illuminating the transparent conductive composition with an UV light sufficient to cause the transparent conductive composition to cure into a transparent conductive coating.
A method for coating a substrate with a photocurable transparent conductive composition, the method comprising:
- applying a transparent conductive composition to the substrate, wherein the transparent conductive composition includes:
- an aliphatic acrylated oligomer selected from an aliphatic urethane diacrylate or aliphatic urethane triacrylate present in an amount from 20% to 30% of the weight of the transparent conductive composition;
- an acrylated epoxy oligomer present in an amount from 5% to 9% of the weight of the transparent conductive composition;
- an isobornyl acrylate monomer present in an amount from 20% to 35% of the weight of the transparent conductive composition;
- a photoinitiator present in an amount from 4% to 6% of the weight of the transparent conductive composition;
- a flow promoting agent present in an amount from 3% to 5% of the weight of the transparent conductive composition;
- and
- an electrically conductive powder present in an amount from 30% to 40% of the weight of the transparent conductive composition;
- and
- illuminating the transparent conductive composition with an UV light sufficient to cause the transparent conductive composition to be incorporated into the transparent conductive coating by the time the composition is cured.
A method of making a photocurable transparent conductive composition comprising:
- mixing an isobornyl acrylate monomer and a photoinitiator in a pan;
- introducing an aliphatic acrylated oligomer, a flow promoting agent and an acrylated epoxy oligomer into the pan;
- mixing the aliphatic acrylated oligomer, the flow promoting agent, and the acrylated epoxy oligomer in the pan;
- introducing the electrically conductive powder into the pan;
- and
- mixing the electrically conductive powder in the pan.
A photocurable transparent conductive composition comprising:
- at least one aliphatic acrylated oligomer selected from an aliphatic urethane diacrylate or aliphatic urethane triacrylate;
- an acrylated epoxy oligomer;
- an isobornyl acrylate monomer present in an amount from 20% to 35% of the weight of the transparent conductive composition;
- an electrically conductive powder present in an amount from 20% to 50% of the weight of the transparent conductive composition;
- and
- a photoinitiator.
Dependencies are inferred from the claim text.