PITTSBURGH--(BUSINESS WIRE)--PPG (NYSE:PPG) today announced the launch of PPG HI-GARD® Non-Methanol hard coating for 1.5 standard index ophthalmic lenses. Developed as a drop-in replacement for traditional methanol-based coatings, the new formulation enables prescription lens makers to stay ahead of evolving regulatory requirements on methanol use while maintaining durability performance. PPG Hi-Gard Non-Methanol coating offers the same scratch-resistant protection for plastic lens materials as. ...