Uv-curable coating containing carbon nanotubes
AssigneeBayer MaterialScience AG
InventorsRobert N. Hunt, Charles Todd Williams
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Abstract
The present invention provides a conductive, curable coating made from about 0.01 wt. % to about 5 wt. %, of multi-walled carbon nanotubes, having a diameter of greater than about 4 nm, about 10 wt. % to about 99 wt. % of an aliphatic urethane acrylate and about 0.1 wt. % to about 15 wt. % of a photoinitiator, wherein the coating is curable by exposure to radiation and wherein the cured coating has a surface resistivity of about 102Ω/□ to about 1010Ω/□. A process for the production of such coatings is also provided. There are many applications where carbon nanotubes in a radiation curable coating may enhance properties other than conductivity, such as physical and thermal properties.
Claims22
A conductive, curable coating comprising:
- about 0.01 wt. % to about 5 wt. % of multi-walled carbon nanotubes having a diameter of greater than about 4 nm;
- about 10 wt. % to about 99 wt. % of an aliphatic urethane acrylate;
- and
- about 0.1 wt. % to about 15 wt. % of a photoinitiator,
- wherein the weight percentages are based on the weight of the formulation, wherein the coating is curable by exposure to radiation and wherein the cured coating has a surface resistivity of about 102Ω/□ to about 1010Ω/□.
A process for producing a conductive, curable coating comprising:
- combining
- about 0.01 wt. % to about 5 wt. % of multi-walled carbon nanotubes having a diameter of greater than about 4 nm,
- about 10 wt. % to about 99 wt. % of an aliphatic urethane acrylate, and
- about 0.1 wt. % to about 15 wt. % of a photoinitiator,
- wherein the weight percentages are based on the weight of the formulation;
- and
- curing the coating by exposure to radiation,
- wherein the cured coating has a surface resistivity of about 102Ω/□ to about 1010Ω/□.
Dependencies are inferred from the claim text.