IN296621: A process for the preparation of inorganic-organic hybrid sols and deposition of hard coatings on pp and pet substrates using these sols

Inorganic-organic hybrid sols suitable for the deposition of thermal/UV-thermal curable hard and protective coatings on PP, PET, and related plastics (with primer coating for better adhesion) have been disclosed. Coatings of 1-5 µm thickness show high optical transparency and excellent abrasion, surface hardness (5-6H), and adhesion properties. Coating materials also have thermal, water, and chemical resistant characteristics under atmospheric conditions.