Fog resistant coatings
AssigneeSDC Technologies, Inc.
InventorsKiranmayi Deshpande, David Hess, Erdem Cetin, Patrick Monnig
Life of this patent
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Abstract
A coating composition may include one or more radiation-curable resins having reactive groups in a hydrophilic region, a reactive surfactant comprising a reactive moiety; and a photoinitiator, wherein, upon the exposure of the photoinitiator to light energy, the one or more radiation-curable resins are cured to form a hydrophilic network with the reactive surfactant being bound to the network by binding of the reactive moiety of the surfactant to the reactive groups of the one or more radiation-curable resins. The cured coatings provide long lasting, washable, anti-fog properties.
Claims18
A coating composition which when applied to a substrate and cured provides a transparent, washable anti-fog coating, the coating composition comprising:
- one or more radiation-curable acrylates having hydrophilic regions comprising one or more hydrophilic alkoxylate groups, the one or more hydrophilic alkoxylate groups having the formula —((CH2)nO—)m—, where n can be equal or greater than 1 and equal or less than 3 (1<n<3) and m can be equal or greater than 1 and equal or less than 10 (1<m<10);
- about 0.5% to about 5% by weight of a reactive surfactant comprising a reactive moiety based on the weight of the coating composition;
- and
- a photoinitiator,
- wherein, upon the exposure of the photoinitiator to light energy, the one or more radiation-curable acrylates are cured to form a hydrophilic network with the reactive surfactant being bound to the network by binding of the reactive moiety of the surfactant to one or more acrylate groups in the hydrophilic regions of the one or more radiation-curable acrylates.
A ultraviolet (UV) curable coating composition comprising:
- one or more radiation-curable, multifunctional acrylates having hydrophilic regions comprising one or more hydrophilic alkoxylate groups, the one or more hydrophilic alkoxylate groups having the formula —((CH2)nO—)m—, where n can be equal or greater than 1 and equal or less than 3 (1<n<3) and m can be equal or greater than 1 and equal or less than 10 (1<m<10);
- about 0.5% to about 5% by weight of one or more reactive surfactants based on the weight of the coating composition, wherein the reactive surfactants have one or more reactive groups comprising an alkenyl group, acrylate group, thiol group or a combination thereof;
- and
- a photoinitiator,
- wherein, upon the exposure of the photoinitiator to UV light energy, the one or more radiation-curable acrylates are cured to form a hydrophilic network with the one or more reactive surfactants bound to the network by binding the one or more reactive groups of the one or more reactive surfactants to one or more acrylate groups in the hydrophilic regions of the one or more radiation-curable acrylates.
A cured coating formed from a coating composition, the coating composition comprising:
- one or more radiation-curable acrylates having hydrophilic regions comprising one or more hydrophilic alkoxylate groups, the one or more hydrophilic alkoxylate groups having the formula —((CH2)nO—)m—, where n can be equal or greater than 1 and equal or less than 3 (1<n<3) and m can be equal or greater than 1 and equal or less than 10 (1<m<10);
- about 0.5% to about 5% by weight of a reactive surfactant comprising a reactive moiety based on the weight of the coating composition;
- and
- a photoinitiator,
- wherein, upon the exposure of the photoinitiator to light energy, the one or more radiation-curable acrylates cures to form the cured coating comprising a hydrophilic network with the reactive surfactant being bound to the network by binding of the reactive moiety of the surfactant to one or more acrylate groups in the hydrophilic regions of the one or more radiation-curable acrylates.
An article comprising:
- a substrate and a transparent, washable anti-fog coating disposed on the substrate, wherein the coating is formed from a coating composition comprising:
- one or more radiation-curable acrylates having hydrophilic regions comprising one or more hydrophilic alkoxylate groups, the one or more hydrophilic alkoxylate groups having the formula —((CH2)nO—)m—, where n can be equal or greater than 1 and equal or less than 3 (1<n<3) and m can be equal or greater than 1 and equal or less than 10 (1<m<10);
- about 0.5% to about 5% by weight of a reactive surfactant comprising a reactive moiety based on the weight of the coating composition;
- and
- a photoinitiator,
- wherein, upon the exposure of the photoinitiator to light energy, the one or more radiation-curable acrylates cures to form the coating comprising a hydrophilic network with the reactive surfactant being bound to the network by binding of the reactive moiety of the surfactant to one or more acrylate groups in the hydrophilic regions of the one or more radiation-curable acrylates.
Dependencies are inferred from the claim text.