CRACK-FREE COATINGS AND RELATED COATED SUBSTRATES AND METHODS

摘要

Methods for providing a crack-free hard coat are disclosed. The methods include (i) depositing a primer layer having a coefficient of thermal expansion of 300 to 600 ?m/mino°C measured at a temperature range below the glass transition temperature of the primer layer, wherein the primer layer has a film thickness of at least 1 micron and is formed from a thermoplastic acrylic composition, and (ii) depositing the hard coat over at least a portion of the primer layer, wherein the hard coat has a thickness of at least 2 ?m and is formed from a composition comprising an alkoxide.