申请人:Wacker Chemie AG
公开号:US07906179B2
公开(公告)日:2011-03-15
Coating formulations suitable for demanding applications such as automotive clear and top coats contain a hydroxyl-functional film forming resin, an isocyanate or blocked isocyanate curative, and functionalized metal oxide particles, where >50% of the reactive functionalities are more reactive towards isocyanates than at least 60% of the hydroxyl groups of the film forming resin. Coatings prepared therefrom have excellent abrasion resistance, even with low filler content.
适用于要求高的应用程序,如汽车清漆和面漆的涂层配方包含羟基官能团膜形成树脂、异氰酸酯或阻化异氰酸酯固化剂以及功能化的金属氧化物颗粒,其中>50%的反应官能团比膜形成树脂中至少60%的羟基团更容易对异氰酸酯发生反应。由此制备的涂层具有优异的耐磨性,即使填料含量低也是如此。