Radiation-curable primer coating composition and a polyolefin film or molded article coated with the cured primer
AssigneeDsm N.V.
InventorEdward P. Zahora
Life of this patent
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Abstract
Provided is a radiation-curable primer coating composition, which is adapted to provide a printable primer coating on a polyolefin surface that is functionally resistant to delamination from the polyolefin surface over the temperature range from heat pasteurization temperatures to freezer storage temperatures. The primer composition being formulated from the following components: at least one monomer or oligomer having at least one functional group that polymerizes when exposed to radiation; and an effective amount of at least one zirconate or titanate, or a mixuture of a titanate and zirconate, to increase adhesion of the radiation-cured primer coating to said polyolefin surface.
Claims8
A radiation curable primer coating composition wherein said primer composition comprises:
- (a) at least one monomer or oligomer derived from a non-aromatic polyisocyanate, having at least one functional group which is polymerized when exposed to radiation;
- (b) an effective adhesion promoting amount of at least one zirconate;
- (c) reactive diluent having a functional group which is capable of reacting with at least one said functional group of the monomer or oligomer;
- and
- (d) optionally a photoinitiator compound;
- wherein the radiation-curable primer composition when applied to a polyolefin substrate and cured is resistant to delamination and provides a printable surface.
Dependencies are inferred from the claim text.