Electrostatic dissipative surface coating and high temperature label employing same
AssigneePolyonics Corporation
InventorsKenneth T. Robichaud, Donald P. Nieratko, Delilah F. Adams, Robert H. Guyette, Jr.
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Abstract
An electrostatic dissipative coating composition comprises a phenoxy-epoxy resin system comprising from 40-80 parts by weight to 5-20 parts by weight of an epoxy resin. Carbon nanotubes are dispersed in the phenoxy-epoxy resin system. The coating composition includes at least one isocyanate crosslinking agent and at least one metal catalyst. In a further aspect, a label construction comprising the electrostatic dissipative coating composition is provided.
Claims23
An electrostatic dissipative coating composition comprising:
- a phenoxy-epoxy resin system comprising from 40 parts by weight to 80 parts by weight of an epoxy resin and from 5 parts by weight to 20 parts by weight of a phenoxy resin;
- carbon nanotubes dispersed in the phenoxy-epoxy resin system;
- at least one isocyanate crosslinking agent;
- and
- at least one metal catalyst.
An electrostatic dissipative label construction, comprising:
- a polymer film substrate having an upper surface and a lower surface;
- and
- an electrostatic dissipative coating layer overlying the upper surface and formed of an electrostatic dissipative coating composition comprising:
- a phenoxy-epoxy resin system comprising from 40 parts by weight to 80 parts by weight of an epoxy resin and from 5 parts by weight to 20 parts of a phenoxy resin;
- carbon nanotubes dispersed in the phenoxy-epoxy resin system;
- at least one isocyanate crosslinking agent;
- and
- at least one metal catalyst.
An electrostatic dissipative label facestock construction, comprising:
- a polymer film substrate having an upper surface and a lower surface;
- and
- an electrostatic dissipative coating layer overlying the upper surface and formed of an electrostatic dissipative coating composition comprising:
- a phenoxy-epoxy resin system comprising from 40 parts by weight to 80 parts by weight of an epoxy resin and from 5 parts by weight to 20 parts by weight of a phenoxy resin;
- carbon nanotubes dispersed in the phenoxy-epoxy resin system;
- at least one isocyanate crosslinking agent;
- and
- at least one metal catalyst;
- said electrostatic dissipative coating layer having a surface adapted to carry printed information;
- and
- an antistatic base coat layer disposed between the upper surface and the electrostatic dissipative coating layer.
Dependencies are inferred from the claim text.