Precoating methods and compositions
AssigneeAuckland Uniservices Limited
InventorKaluachchi Gamage Karnika De Silva
Life of this patent
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Abstract
Methods and compositions for precoating a substrate. The method comprises: applying to the substrate a curable precoat forming high solids composition comprising: UV curable resin forming components and a photoinitiator system; and applying UV radiation to cure the curable precoat forming component. The curable precoat forming component is not thermally cured. The high solid compositions may comprise a surface-cure photoinitiator and a through-cure photoinitiator and the UV radiation cures the precoat through its entire depth. A conductive additive in the form of a polymer, fiber, filler, powder etc can be added to facilitate and improve electrostatic adhesion of powders to the substrate.
Claims27
-53. (canceled)
A method of precoating a substrate comprising:
- applying to the substrate a curable precoat forming high solids composition comprising UV curable resin forming components and a photoinitiator system, and applying UV radiation to cure the curable precoat forming component to form a precoat.
A composition comprising:
- a curable precoat forming component comprising UV curable resin forming components and a photoinitiator system comprising a surface-cure photoinitiator and a through-cure photoinitiator.
A method of coating a substrate comprising:
- applying to the substrate a curable precoat forming high solids composition which comprises UV curable resin forming components and a photoinitiator system;
- applying UV radiation to cure the curable precoat forming composition and form a precoat;
- and
- applying a powder coat to the precoat.
A precoated substrate suitable for powdercoating, having a precoating comprising a UV curable resin forming component and a photoinitiator system, cured or partially cured by UV radiation at room temperature.
Dependencies are inferred from the claim text.