Antistatic coating and coated film
AssigneeMitsubishi Polyerster Film, LLC
InventorsJohn M. Heberger, Robin M. Donald
Life of this patent
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Abstract
An antistatic polymer film having a coated surface that resists the formation of static. The antistatic coating on the film layer includes a polythiophene, a surfactant and water. The ratio of the surfactant to the polythiophene can be at least about 1:1 by weight of said coating. In addition, the coating can contain less than about 1 percent by weight of polymeric binder and can also contain less than about 1 percent by weight of organic solvent.
Claims30
A polymer film having a coated surface that resists the formation of static, said film comprising:
- a polymer film layer, and
- an antistatic coating on said film layer,
- wherein said coating includes a polythiophene, a surfactant and water,
- a ratio of said surfactant to said polythiophene is at least about 1:1 by weight of said coating,
- said coating contains less than about 1 percent by weight of polymeric binder;
- and
- said coating contains less than about 1 percent by weight of organic solvent.
A process for controlling the formation of static on a surface, said process comprising:
- coating said surface with an antistatic coating containing a polythiophene and a surfactant, wherein said surfactant is present at about 0.1 to about 3.2 weight percent of said coating.
Dependencies are inferred from the claim text.