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1. 发明授权

US06329060B1 Solvent-free film-forming compositions for clearcoats, coated substrates and method related thereto 失效
标题翻译：用于透明涂层，涂覆基材的无溶剂成膜组合物及其相关方法
公开(公告)号：US06329060B1
公开(公告)日：2001-12-11
申请号：US09437796
申请日：1999-11-10
申请人： Karen A. Barkac , Dennis Leroy Faler , Mary E. Grolemund , Debra Lynn Singer
发明人： Karen A. Barkac , Dennis Leroy Faler , Mary E. Grolemund , Debra Lynn Singer
IPC分类号： B32B2708
CPC分类号： C09D167/07 , C08G18/4615 , C08G18/6254 , C08G18/631 , C08G18/672 , C08G18/8077 , C09D4/06 , C09D175/04 , Y10T428/31551 , Y10T428/31554 , Y10T428/31786 , Y10T428/31855 , Y10T428/31909 , C08G18/42 , C08F283/02 , C08L2666/02 , C08L2666/16
摘要： A multi-component composite coating composition is provided which includes a pigmented base coat and a transparent topcoat composition applied over the base coat. The transparent topcoat is deposited from a substantially solvent free film-forming composition which includes a thermosettable dispersion of polymeric microparticles having functionality adapted to react with a crosslinking agent and a hydrophilic crosslinking agent reactive with the functionality of the microparticles. The microparticles are prepared from one or more reaction products of ethylenically unsaturated monomers, one or more hydrophobic polymers and one or more hydrophobic crosslinking agents. Pigmented film-forming compositions as well as curable compositions containing the above-described dispersions also are provided. A method of forming the dispersion of polymeric microparticles is provided. The substantially solvent-free film-forming compositions of the invention are storage stable at room temperature and provide coatings with excellent application properties such as sag resistance and tack-free overspray, and excellent performance properties such as chip resistance and adhesion. The film-forming compositions are suitable for wet-on-wet application over a base coat with little or no mudcracking.
摘要翻译：提供了一种多组分复合涂料组合物，其包括着色底涂层和涂覆在底涂层上的透明面漆组合物。透明面漆由基本上无溶剂的成膜组合物沉积，该组合物包括具有适于与交联剂反应的官能团的聚合物微粒的可热分散分散体和与微粒官能度反应的亲水性交联剂。微粒由烯属不饱和单体，一种或多种疏水性聚合物和一种或多种疏水性交联剂的一种或多种反应产物制备。还提供了着色成膜组合物以及含有上述分散体的可固化组合物。提供了形成聚合物微粒分散体的方法。本发明的基本上无溶剂的成膜组合物在室温下保存稳定，并提供具有优异应用性能的涂层，例如抗流挂性和无粘性过喷，以及优异的性能特性如耐芯片性和粘合性。成膜组合物适用于湿法湿法施涂于基底涂层上，很少或没有泥浆破裂。

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