,7 showed that benzoin and benzil, a bright yellow oxidation product of benzoin, are evolved from the coating during cure in a variety of powder coating systems.

• 这说明粉末涂料的黄变与安息香的氧化产物偶苯酰有关。我们假定安息香的脱气作用与其分子内部的氧化作用有关。