Treated substrate having improved release properties
AssigneeMinnesota Mining and Manufacturing Company
InventorsChristopher C. Olson, Ramesh C. Kumar, John C. Chang
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Abstract
Treated cellulose-based substrate, e.g., paper, having improved release properties and methods of making such treated substrate are disclosed. The treated substrate is coated with a primer coating comprising a cationic polymer and with a release coating comprising a carboxy- or carboxylate-containing release polymer.
Claims16
A method for preparing treated cellulosic substrate comprising the steps of A) first applying a water-based primer coating comprising a water-soluble or water-dispersible cationic polymer to a cellulosic substrate, followed by B) applying a water-based release coating comprising a water-soluble or water-dispersible release polymer comprising pendant carboxyl or carboxylate functional moieties, wherein said release polymer provides improved release properties to the surface of the treated substrate.
Treated paper wherein at least one surface of said paper has been coated by A) first applying a water-based primer coating comprising water soluble or water-dispersible cationic polymer followed by B) applying a water-based release coating comprising a water-soluble or water-dispersible release polymer comprising pendant carboxyl or carboxylate functional moieties.
Dependencies are inferred from the claim text.