VOC-free, low viscosity, LED-curable coating and method of application
First Claim
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1. A method of forming a coating on a surface, said method comprising:
- providing a flowable composition comprisinga metal oxide composition comprising;
silica nanoparticles, alumina nanoparticles, or both;
an acrylate; and
a photoinitiator selected from the group consisting of 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bis (2,4,6-trimethylbenzoyl)-phenylphosphineoxide, 4-thiophenyl phenyl diphenyl sulfonium hexafluoroantimonate, 2-methyl-1-[4-(methylthio)-phenyl]-2-(4-morpholinyl)-1-propanone, and mixtures thereof;
said flowable composition having a viscosity of less than about 200 cP and comprising less than about 5% by weight volatile organic compounds;
applying a layer of said flowable composition to said surface; and
exposing said layer to light having a wavelength of from about 320 nm to about 700 nm to form said coating.
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Abstract
This invention is related to compositions that can be used to protect surfaces, such as those found on bowling lanes (both synthetic and wood). The compositions are low viscosity and contain little to no VOCs (volatile organic compounds). In one embodiment, the flowable compositions are 100% solids, while in another embodiment, they are solvent-borne compositions that only include VOC-exempt solvents. Regardless of the embodiment, the compositions can be cured via UV LED light to yield scratch, abrasion, and impact resistant coatings.
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Citations
38 Claims
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1. A method of forming a coating on a surface, said method comprising:
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providing a flowable composition comprising a metal oxide composition comprising; silica nanoparticles, alumina nanoparticles, or both; an acrylate; and a photoinitiator selected from the group consisting of 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bis (2,4,6-trimethylbenzoyl)-phenylphosphineoxide, 4-thiophenyl phenyl diphenyl sulfonium hexafluoroantimonate, 2-methyl-1-[4-(methylthio)-phenyl]-2-(4-morpholinyl)-1-propanone, and mixtures thereof; said flowable composition having a viscosity of less than about 200 cP and comprising less than about 5% by weight volatile organic compounds; applying a layer of said flowable composition to said surface; and exposing said layer to light having a wavelength of from about 320 nm to about 700 nm to form said coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A protected surface, said surface comprising a cured coating on said surface, said cured coating being formed from a flowable composition comprising
a metal oxide composition comprising: -
silica nanoparticles, alumina nanoparticles, or both; an acrylate; and a photoinitiator selected from the group consisting of 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bis (2,4,6-trimethylbenzoyl)-phenylphosphineoxide, 4-thiophenyl phenyl diphenyl sulfonium hexafluoroantimonate, 2-methyl-1-[4-(methylthio)-phenyl]-2-(4-morpholinyl)-1-propanone, and mixtures thereof; said flowable composition having a viscosity of less than about 200 cP and comprising less than about 5% by weight volatile organic compounds, and being curable by light having a wavelength of from about 320 nm to about 700 nm. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A flowable composition useful for treating a surface, said flowable composition comprising
a metal oxide composition comprising: -
silica nanoparticles, alumina nanoparticles, or both; an acrylate; and a photoinitiator selected from the group consisting of 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bis (2,4,6-trimethylbenzoyl)-phenylphosphineoxide, 4-thiophenyl phenyl diphenyl sulfonium hexafluoroantimonate, 2-methyl-1-[4-(methylthio)-phenyl]-2-(4-morpholinyl)-1-propanone, and mixtures thereof; said flowable composition having a viscosity of less than about 200 cP, comprising less than about 5% by weight volatile organic compounds, and being curable by light having a wavelength of from about 320 nm to about 700 nm. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification