申请人:KANSAI PAINT CO., LIMITED
公开号:EP1004639A1
公开(公告)日:2000-05-31
The present invention provides a powder coating composition for forming a multilayer film, obtainable by dry blending a lower layer-forming thermosetting powder coating material (A) and an upper layer-forming thermosetting powder coating material (B), wherein at least one of the following conditions is satisfied: (I) the material (A) contains an onium salt compound; (II) particles of 45 µm or smaller diameter account for at least 90 wt.% of each of the materials (A) and (B); and (III) the material (A) is higher than the material (B) in melt viscosity (Pa·s) measured at 130°C.
The powder coating composition of the invention is capable of sufficiently separating into layers and forming a multilayer film with excellent properties.
本发明提供了一种用于形成多层膜的粉末涂料组合物,该组合物可通过干混下层热固性粉末涂料材料(A)和上层热固性粉末涂料材料(B)而获得,其中至少满足以下条件之一:(I)材料(A)含有鎓盐化合物;(II)直径为 45 微米或更小的颗粒在材料(A)和(B)中各占至少 90 重量%;(III)在 130℃下测量的熔融粘度(Pa-s),材料(A)高于材料(B)。
本发明的粉末涂料组合物能够充分分层,形成具有优异性能的多层薄膜。