Multi-component coating composition comprising an anhydride containing polymer, a glycidyl component and an acid functional component
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0351965A1
公开(公告)日:1990-01-24
A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about
(a) 25-90% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecualr weight of about 2,000-50,000;
(b) 5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups;
(c) 5-50% by weight, based on the weight of the binder of an acid functional monomeric, oligomeric or polymeric compound which may or may not contain hydroxyl functionality; and
the composition contains about 0.1-5% by weight; based on the weight of the binder, of a catalyst.
一种可用于汽车和卡车面漆的涂料组合物,其中成膜粘结剂包含的活性粘结剂成分约为
(a) 25-90%(以粘合剂重量计)的丙烯酸聚合物,该聚合物具有至少两个活性酸酐基团,由乙烯基不饱和酸酐的聚合单体和甲基丙烯酸烷基酯、丙烯酸烷基酯及其混合物组成的组中的聚合单体构成,其中烷基具有 1-8 个碳原子,聚合物的平均摩尔重量约为 2,000-50,000 磅;
(b) 5-50%(以粘合剂重量计)的缩水甘油成分,其中至少有两个活性缩水甘油基;
(c) 5-50%(以粘合剂重量计)的酸官能团单体、低聚物或聚合化合物,其可能含也可能不 含羟基官能团;以及
以粘合剂重量计,组合物含有约 0.1-5%(重量)的催化剂。