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公开(公告)号：US20060177639A1
公开(公告)日：2006-08-10
申请号：US11051864
申请日：2005-02-04
CPC分类号： B05D7/572 , B05D1/007 , B05D2202/00 , C09D5/028 , Y10T428/24876 , Y10T428/2495 , Y10T428/31551
摘要： Process for the production of multi-layer coatings, comprising the successive steps: 1) applying a 10 to 35 μm thick base coat layer to a substrate provided with an EDC primer, 2) applying a clear coat layer onto the base coat layer, 3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied in a first layer and in a second layer; the first layer comprises a modified water-borne base coat produced by mixing an unmodified water-borne base coat with a pigmented admixture component and the second layer comprises the unmodified water-borne base coat, wherein the admixture component contains one or more binders A, has a ratio by weight of pigment content to resin solids content of 0.05:1 to 1:1 and is mixed into the unmodified water-borne base coat in a ratio by weight of 0.1 to 1 parts of binder(s) A:1 part of resin solids of the unmodified water-borne base coat, wherein the pigment content of the admixture component comprises at least one pigment which effectively reduces UV transmission and wherein the pigment content being such that UV light can penetrate through the base coat layer formed from modified water-borne base coat and unmodified water-borne base coat only in accordance with a UV transmission of less than 0.1% in the wavelength range of from 280 to 380 nm and of less than 0.5% in the wavelength range of from 380 to 400 nm.
摘要翻译： 制备多层涂层的方法，包括以下连续步骤：1）将10至35μm厚的底涂层施加到具有EDC底漆的基材上，2）在底涂层上施加透明涂层3 ）共同固化底涂层和透明涂层，其中底涂层施加在第一层和第二层中; 第一层包括通过将未改性的水性底涂层与着色混合物组分混合而制备的改性水性底漆，第二层包含未改性的水性底涂层，其中混合物组分含有一种或多种粘合剂A， 颜料含量与树脂固体含量的重量比为0.05:1至1:1，并以未改性的水性底涂层以0.1至1份粘结剂的比例混合成A：1份 的未改性水性底涂层的树脂固体，其中混合物组分的颜料含量包含至少一种有效降低UV透射的颜料，并且其中颜料含量使得UV光可以穿透由经修饰的基底涂层形成的底涂层 水性底涂层和未改性的水性底涂层，其仅在波长范围为280〜380nm的UV透射率小于0.1％，波长范围为0.5％以下 从380到400nm。
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