High gloss ultraviolet curable coating
AssigneeInternational Paper Company
InventorsGuy D'Anna, Stephen H. Monroe, Peter J. Angelini, James A. Goettmann, John R. Boylan
Life of this patent
Estimating the term…
Abstract
A gloss coating composition comprising radiation curable oligomers and monomers, and photosensitizers in a homogeneous mixture having a viscosity in the range of 4500 to 8000 cps; wherein the presence of the photosensitizers causes polymerization of the radiation curable oligomers and monomers when exposed to an ultraviolet light source. The coating composition is applied to at least one surface of a substrate and exposed to an ultraviolet light source resulting in curing of the composition onto the substrate surface without substantial penetration into the substrate surface forming a gloss coated substrate.
Claims24
A gloss coating composition consisting essentially of:
- 25.0-55.0 wet wt. % of radiation curable oligomers;
- 6.1-14.8 wet wt. % of radiation curable monomers;
- wherein said radiation curable oligomers are acrylated epoxy oligomers and said monomers are triacrylate monomers;
- and
- a photosensitizer which consists essentially of a combination of benzophenone and an acrylated amine in the ratio of 3/1 to 1/1;
- in a homogeneous mixture having a viscosity in the range of 4500 to 8000 cps;
- wherein the presence of said photosensitizers causes polymerization of said radiation curable oligomers and monomers when exposed to an ultraviolet light source.
A gloss coating composition consisting essentially of:
- 25.0-55.0 wet wt. % of radiation curable oligomers;
- 6.1-14.8 wet wt. % of radiation curable monomers;
- wherein said radiation curable oligomers are acrylated epoxy oligomers and said monomers are triacrylate monomers;
- and
- 3-5 wt % of 1-hydroxycyclohexyl phenyl ketone;
- in a homogeneous mixture having a viscosity in the range of 4500 to 8000 cps;
- wherein the presence of said photosensitizer causes polymerization of said radiation curable oligomers and monomers when exposed to an ultraviolet light source.
A gloss coated product comprising a substrate and a gloss coating applied on a surface thereof;
- wherein said gloss coating is prepared from a homogeneous mixture of radiation curable oligomers and monomers and photosensitizers having a viscosity in the range of 4500 to 8000 cps;
- wherein said radiation curable oligomers are acrylated epoxy oligomers, said monomers are triacrylate monomers and said photosensitizer consists essentially of a combination of benzophenone and an acrylated amine in the ratio of 3/1 to 1/1 wherein the presence of said photosensitizers causes polymerization of said radiation curable oligomers and monomers when exposed to an ultraviolet light source resulting in curing of said mixture onto the substrate surface without substantial penetration into the substrate surface forming the gloss coated product.
A method for making a gloss coated substrate comprising:
- blending radiation curable oligomers and monomers with photosensitizers to form a a gloss coating composition consisting essentially of radiation curable oligomers and monomers and photosensitizers wherein said radiation curable oligomers are acrylated epoxy oligomers, said monomers are triacrylate monomers and said photosensitizer consists essentially of a combination of benzophenone and an acrylated amine in the ratio of 3/1 to 1/1;
- heating said mixture with agitation to form a homogeneous mixture having a viscosity in the range of 4500 to 8000 cps;
- cooling said homogeneous mixture and applying to at least one surface of the substrate;
- exposing said homogeneous mixture to an ultraviolet light source;
- wherein the presence of said photosensitizers causes polymerization of said radiation curable oligomers and monomers resulting in curing of said mixture onto the substrate surface without substantial penetration into the substrate surface forming the gloss coated substrate.
Dependencies are inferred from the claim text.