本规范涵盖了高性能单组分湿固化UV稳定聚氨酯面漆（ASTM D 16，II型聚氨酯）的要求。其目的是用作面漆，提供良好的颜色和光泽保持。符合本规范要求的涂层通常适用于SSPC环境区1A（内部，正常干燥）、1B（外部，正常干燥）、2A（经常被淡水湿润，不包括浸泡）、2B（经常被盐水湿润，不包括浸泡）、3B（化学暴露，中性）和3C（化学暴露，碱性）的暴露。指定的涂层适用于刷涂、喷涂或辊涂。通常应用于底漆或中间涂层上。

This specification covers the requirements for a high-performance single-component moisture-curing UV-stable polyurethane topcoat (ASTM D 16, Type II polyurethane). It is intended to be used as a topcoat that provides good color and gloss retention.Coatings meeting the requirements of this specification are generally suitable for exposures in SSPC Environmental Zones 1A (interior, normally dry), 1B (exterior, normally dry), 2A (frequently wet by fresh water, excluding immersion), 2B (frequently wet by salt water, excluding immersion), 3B (chemical exposure, neutral) and 3C (chemical exposure, alkaline). The specified coating is intended for application by brush, spray, or roller. It is generally applied over a primer or intermediate coating.