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公开(公告)号：US5470893A
公开(公告)日：1995-11-28
申请号：US955734
申请日：1993-01-29
摘要： Powder coating composition, prepared by process comprising the steps of providing a primary film-forming component and one or more other, different, components selected from film-forming components and non-film-forming components, each said component consisting of solid particles and each particle of said primary film-forming component comprising a solid polymeric binder system at least a portion of which is a film-forming resin in an amount sufficient to impart film forming properties to the composition, the particles of said other, different, components containing at least one substance that, when processed into a coating with said primary film-forming component, provides with said primary film-forming component said desired appearance or performance attribute to said coating, provided that, if the agglomerate contains a metallic or luster component and a fluidizable film-forming component, it also contains an incompatible film-forming component or a non-film-forming performance component, or two or more such components, and comminuting the components and mixing and agglomerating them to produce composite particles such that the composition is air fluidizable and can be applied to a substrate by electrostatic spray and the individual particles in said composite particles are bonded together such that the composite particles do not break down under the mechanical and/or electrostatic forces associated with application of the composition to the substrate.
摘要翻译： 通过方法制备的粉末涂料组合物包括以下步骤：提供选自成膜组分和非成膜组分的初始成膜组分和一种或多种其它不同组分，每种所述组分由固体颗粒和每种 所述初始成膜组分的颗粒包含固体聚合物粘合剂体系，其至少一部分是成膜树脂，其量足以赋予组合物成膜性能，所述另一种不同组分的颗粒含有 至少一种物质，当被加工成具有所述初始成膜组分的涂层时，向所述涂层提供所述初始成膜组分所需的外观或性能属性，条件是如果附聚物含有金属或光泽组分， 可流动的成膜组分，它还含有不相容的成膜组分或非成膜性能组合物 一次或两个或更多个这样的组分，并粉碎组分并混合并附聚它们以产生复合颗粒，使得组合物是空气可流化的，并且可以通过静电喷射施加到基底上，并且所述复合颗粒中的单个颗粒结合在一起 使得复合颗粒在与组合物施加到基底相关的机械和/或静电力下不分解。
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