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    • 5. 发明授权
    • Process for the production of multilayer coatings
    • 多层涂料生产工艺
    • US5389406A
    • 1995-02-14
    • US136588
    • 1993-10-14
    • Klaus-Peter DoeblerWolfgang GoldnerMatthias KimpelKlausjorg Klein
    • Klaus-Peter DoeblerWolfgang GoldnerMatthias KimpelKlausjorg Klein
    • B05D1/00B05D1/36B05D3/02B05D7/00C09D175/04C25D13/00C25D13/06
    • B05D7/542B05D1/36C09D175/04B05D1/007B05D2451/00
    • A process is described for producing multilayer coatings in which a first coating layer of a first aqueous coating medium is applied to an electrically conducting substrate by electrophoretic deposition, is provided wet-in-wet with a second coating layer of a second aqueous coating medium, followed by joint stoving, wherein a coating medium based on one or more vehicles stabilised by ionic groups and which crosslink on stoving with the formation of urethane groups is used for the second coating layer, and the coating media are selected so that the maximum pigment/vehicle weight ratio of the first coating medium is 1:1, that the ratio of the pigment/vehicle weight ratio of the first coating medium to that of the second coating medium is up to 1.8, and the minimum stoving temperature interval of the second coating layer is above that of the first coating layer or overlaps the latter so that the lower limit of the interval for the second coating layer is above the lower limit of the interval for the first coating layer.
    • 描述了一种用于生产多层涂层的方法,其中通过电泳沉积将第一含水涂层介质的第一涂层施加到导电基材上,在第二涂层介质的第二涂层上湿润湿润, 接着进行联合烘烤,其中使用基于一种或多种由离子基团稳定并在形成氨基甲酸酯基团的烘烤上交联的载体的涂料介质,并且选择涂料介质以使最大颜料/ 第一涂布介质的载体重量比为1:1,第一涂布介质的颜料/载体重量比与第二涂布介质的重量比高达1.8,第二涂层的最小烘干温度间隔 层高于第一涂层的厚度或与后者重叠,使得第二涂层的间隔的下限高于第二涂层的下限 val为第一涂层。
    • 6. 发明授权
    • Method for producing multilayer coatings
    • 生产多层涂料的方法
    • US5721018A
    • 1998-02-24
    • US639874
    • 1996-04-26
    • Wolfgang GoldnerWerner LenhardAlbrecht LuttenbergHans-Peter Patzschke
    • Wolfgang GoldnerWerner LenhardAlbrecht LuttenbergHans-Peter Patzschke
    • B05D1/02B05D1/18B05D1/28B05D1/36B05D3/02B05D5/00B05D5/06B05D7/00B05D7/02B05D7/14B05D7/24C08G18/10C09D175/04
    • B05D7/532B05D5/068C08G18/10C09D175/04B05D2201/00B05D2451/00
    • A process for preparing a multi-layer coating on an electrically nonconductive surface of a substrate, which comprises (A) applying over the surface an aqueous dispersion having a pH of from 5 to 8 when not containing a metallic pigment, the dispersion containing of from 15% to 20% wt. based on the dispersion of a base coat resin without metallic pigments then having a nonvolatile content of from about 30% to about 50% wt. based on the base coat resin of (i) from 75% to 98% wt. based on base coat resin solids of one or more partially or completely acid neutralized cationic, polyurethane, and polyurethane-urea resins, having a OH number of up to 450, and an amine number of from 20 to 200, and (ii) from 2% to 25% wt. based on base coat resin solids of one or more of an amine-formaldehyde condensation resin alone or in admixture with a blocked polyiisocyanate in either case having at least two groups per molecule being reactive with one or more of amino, OH.sup.-, urethane, and urea groups in (i), the aqueous dispersion further containing one or more of a pigment, a filler, and a lacquer additive, and up to 15% wt. based on the dispersion of an organic solvent for said resin, the ratio of pigment and filler to the resin solids being 0.05-1.2:1, and (B) then applying a clear anionic lacquer coat in a solution in water or in an organic solvent of a clear lacquer powder, said base coat and said clear lacquer coat being cured together at a temperature below 160.degree. C.
    • 一种在基材的非导电表面上制备多层涂层的方法,其包括(A)当不含金属颜料时,在表面上涂覆pH为5至8的水分散体,所述分散体含有 15%至20%重量 基于没有金属颜料的底涂层树脂的分散体,然后具有约30%至约50%wt的不挥发物含量。 基于(i)75%至98%wt的底涂层树脂。 基于一种或多种部分或完全酸中和的阳离子,聚氨酯和聚氨酯 - 脲树脂的底漆树脂固体,OH值高达450,胺数为20至200,和(ii)2 %至25%wt 基于一种或多种胺 - 甲醛缩合树脂中的一种或多种胺 - 甲醛缩合树脂的底漆树脂固体,或与封闭的多异氰酸酯混合,在每种分子中具有至少两个基团的氨基,OH-,氨基甲酸酯和/ (i)中的尿素基团,水分散体还含有颜料,填料和漆添加剂中的一种或多种,​​和至多15重量% 基于用于所述树脂的有机溶剂的分散,颜料和填料与树脂固体的比例为0.05-1.2:1,和(B)然后在水或有机溶剂中的溶液中施加透明阴离子漆涂层 的清漆漆,所述底漆和所述透明漆层在低于160℃的温度下一起固化。