Optical Coatings
Hi-Gard coatings
PPG's
Hi-Gard lens coating solution is cured to form a scratch resistant coating on ophthalmic lenses made from plastic materials.
Hi-Gard coatings are low viscosity solutions which are applied by conventional dip and spin coating methods.
Hi-Gard lens coating is easy to process and can be used with standard dip and spin coating equipment and air circulating ovens. Application of the product results in a coating of uniform thickness (2-4 microns) on the lens.
Hi-Gard lens coating is resistant to acetone, isopropyl alcohol and other commonly used eyewear cleansers. The optical quality of plastic lenses is maintained and lenses coated with
Hi-Gard lens coating are four to six times more abrasion resistant than uncoated lenses made from CR-39® monomer.
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Easy to process – use standard dip and spin coating equipment and air circulating ovens/infrared.
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Chemical resistance – resistant to acetone, isopropyl alcohol and other commonly used eyeglass cleaners.
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Scratch resistance – exhibit lower haze gain after abrasion testing.
Hi-Gard 1080S Coating
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Non-tintable coating for CR-39®, Trivex®. polycarbonate, nylon and mid-index lenses
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Refractive index of 1.51
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Thermal cure
Hi-Gard 1080T Coating
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Tintable coating for CR-39®, Trivex®, polycarbonate, nylon and mid-index lenses
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Less brittle to allow for higher film thicknesses without cracking
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Refractive index of 1.51
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Thermal cure
Hi- Gard 1600MT2 Coating
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Non-tintable coating for high index substrates with improved QUV durability
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Refractive index of 1.58
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No need for primer; excellent adhesion on high index substrates (including 1.60, 1.67 and 1.74)
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Thermal cure