Exxene Anti-Fog surface treatments include temporary anti-fog cleaners, persistent fog-resistant coatings, and permanent, thermoset compositions formulated to eliminate fogging and frost accumulation. Water vapor is absorbed or adsorbed, rendering condensed moisture into a transparent, contiguous layer of clear water.
All coating types produce a clear, fog-free surface on a variety of substrates. These liquid coatings are provided in both aqueous and solvent carriers and can be imparted to the substrate by air drying or thermal-cure processing.
Condensation control occurs by modifying surface energy. Thermal curing and ultraviolet light-curable anti-fog coatings are comprised of crosslinked networks of hydrophilic or surface active molecules. Permanent coatings are wholly comprised of such bound anti-fog molecules and resist removal or loss of functionality due to repeated exposure to handling and cleaning. These types of anti-fog coatings generally last the life of the product excluding removal by abrasion or highly corrosive substances.
Persistent anti-fog coatings are impermanent, their anti-fog property being additionally reinforced by mobile surface-active agent content. This type of anti-fog coating can be rendered ineffective and is suggested for use in semi-sealed product applications where they are protected from cycles of handling and cleaning.
Fog-free characteristics are achieved with mobile surface-active agents and hydrophilic binders if using temporary anti-fog surface treatments. The functional material continues to provide resistance to fogging and frost accumulation until handling or repeated condensation removes the anti-fog agents from the substrate. These types of anti-fog materials will require repeated applications over time.
The functionality of permanent anti-fog coatings benefits from the application of a thicker layer, in the range of six to twelve microns. Less permanent coatings also benefit from the application of a thicker layer but temporary treatments generally function well at much lower thicknesses.
Flow and dip coating are the preferred methods to apply our curable anti-fog coatings. Spray application of solvent based anti-fog coatings is feasible though the resulting, thinner layer will produce less fog resistance. Aqueous coatings are difficult to spray without dilution and the resulting reduction in efficacy.
Temporary anti-fog treatments can be applied manually as supplied as well as in a diluted form, or they can be sprayed, dipped, or flow coated onto a surface.
Humidity control is required prior to curing anti-fog coatings to prevent blush-induced opacity caused by ambient moisture absorption.
HCF-100 Scratch Resistant
The HCF-100 performs well in a wide range of temperatures and moisture levels, excelling at low-temperature frost and ice reduction. It provides a scratch-resistant and formable anti-fog functionality on plastic and glass. The diacetone alcohol solution contains a polyurethane with a minimum cure temperature of 110 degrees Celsius.
HTAF-936 General Use
The HTAF-936 is best suited for semi-sealed environments such as gauges, optics, instrument panels, and lighting. It is a surface-active urethane dispersion with a minimum cure temperature of 60 degrees Celsius.
EX-99R Optical Anti-Fog
EX-99R is an advanced formulation especially developed for use on coated substrates including Anti-Reflective (AR) coated glass, optics, mirrors, and hardcoated ophthalmic lenses. It is an air-drying, alcohol solution of hydrophilic and amphiphilic surfactants.
I-99 General Use
The I-99 Anti-Fog Cleaner is a concentrated anti-fog liquid developed for general use on uncoated plastic and glass. The product is an air-drying, aqueous solution of nonionic, hydrophilic surfactant. I-99 is available in bulk liquid and pre-packaged into multi-use towelettes (Klean n' Klear Anti-Fog Towelettes).
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