- PPG launched a non-methanol hard coating for 1.5 standard index ophthalmic lenses.
- The coating is a drop-in replacement for methanol-based coatings, aligning with global regulations.
- It includes a non-methanol solvent to maintain optimal coating viscosity.
- PPG plans to develop more non-methanol coatings for other refractive indexes.
Introduction
PPG has launched the PPG HI-GARD® Non-Methanol hard coating for 1.5 standard index ophthalmic lenses. This new formulation serves as a drop-in replacement for traditional methanol-based coatings.
Regulatory Compliance
The non-methanol coating helps lens manufacturers comply with evolving global regulations on methanol use, which is considered a restricted substance under REACH regulations in the EU and subject to exposure limits under OSHA in the U.S.
Product Features
PPG HI-GARD® Non-Methanol coating offers the same scratch-resistant protection as existing solutions while eliminating methanol exposure. It includes a non-methanol replenishment solvent to maintain optimal coating viscosity, enhancing process control and consistency.
Compatibility and Adaptability
The coating is compatible with existing hard coating and replenishment systems, allowing for minimal process disruption. It is adaptable to diverse lens applications, with low color and tintable variants available.
Future Developments
In response to expanding restrictions on methanol use, PPG plans to develop additional non-methanol hard coating formulations for other refractive indexes, reinforcing its leadership in sustainable optical technologies.
