申请人:THE SHERWIN-WILLIAMS COMPANY
公开号:EP1241237A1
公开(公告)日:2002-09-18
A method of forming a multilayer coating on a substrate, said method comprising the steps of:
(a) forming a waterborne basecoat composition comprising the steps of:
i) providing a pigmented toner composition comprising:
water;
a polyurethane resin dispersible in water, said polyurethane resin comprising the reaction product of a polyol and an aliphatic isocyanate;
an acrylic or vinyl resin; and
at least one pigment;
ii) providing a mixing clear composition comprising a resin selected for a particular environment under which the basecoat composition is to be applied to the substrate'and dried, said resin being one of (1) an aqueous emulsion polymer produced by a free-radical addition polymerization reaction, and (2) a polyurethane resin dispersible in water;
iii) mixing the pigmented toner composition with the mixing clear composition;
(b) applying the basecoat composition to the substrate to form a basecoat layer;
(c) providing a clear coat composition; and
(d) applying the clear coat composition to the surface of the basecoat layer.
一种在基底上形成多层涂层的方法,所述方法包括以下步骤
(a) 形成水性基底涂层组合物,包括以下步骤
i) 提供颜料调色剂组合物,该组合物包括
水;
可分散于水的聚氨酯树脂,所述聚氨酯树脂包括多元醇和脂肪族异氰酸酯的反应产物;
丙烯酸树脂或乙烯基树脂;以及
至少一种颜料;
ii) 提供一种混合透明组合物,该组合物包含一种树脂,该树脂根据基底涂敷组合物并干燥的特定环境进行选择,所述树脂为 (1) 由自由基加成聚合反应生成的水性乳液聚合物和 (2) 可分散于水中的聚氨酯树脂中的一种;
iii) 将颜料调色剂组合物与混合透明组合物混合;
(b) 将基底涂层组合物涂到基底上,形成基底涂层;
(c) 提供透明涂层组合物;以及
(d) 将透明涂层组合物涂到基底涂层的表面。