公开(公告)号：US06277917B1

公开(公告)日：2001-08-21

申请号：US09326921

申请日：1999-06-07

申请人： Anton Jurgetz ,  Karen B. Allen ,  John M. Furar ,  Kurt A. Humbert ,  Charles M. Kania ,  Stephen G. McQuown ,  Karen S. Rechenberg

发明人： Anton Jurgetz ,  Karen B. Allen ,  John M. Furar ,  Kurt A. Humbert ,  Charles M. Kania ,  Stephen G. McQuown ,  Karen S. Rechenberg

IPC分类号： C09D13314

CPC分类号： B05D7/532 ,  B05D7/534 ,  B05D7/572 ,  C08L33/068 ,  C08L73/02 ,  C08L2205/02 ,  C09D133/068 ,  Y10S525/934 ,  Y10T428/31504 ,  C08L2666/04 ,  C08L2666/28 ,  C08L2666/02

摘要： Curable powder clear coating composition and coated substrate with multilayered coatings have as the predominant film-forming polymer in the coating at least one epoxy acrylic copolymer in an amount from 60 to 99.99 percent by weight and 10 to 40 percent by weight of a polycarboxylic acid crosslinking agent. The percentages by weight are based on solids of the curable coating composition. A single predominant film-forming epoxy acrylic copolymer has a number average molecular weight in the range of about 1000 to 5500; a calculated Tg in the range of 50 to 85° C.; epoxy content in the range of 35 to 85, and a styrene content resulting from an amount of styrene monomer in the range of up to about 25 weight percent based on the weight percent of the monomers to form the copolymer. The blend of epoxy acrylic copolymer has one polymer which is the single epoxy acrylic copolymer or one having a number average molecular weight in the range of about 1000 to about 10,000, a calculated Tg in the range of about 40° C. to 85° C., and an epoxy content from 40 to 60 weight percent of the total weight of the monomers to prepare the epoxy acrylic copolymer. The other polymer of the blend has a number average molecular weight in the range of about 500 to about 3000, a calculated Tg in the range of about 35° C. to about 125° C., and an epoxy content from glycidyl functional ethylenically unsaturated monomer that is higher than that of the first epoxy functional acrylic copolymer of the blend and in the range of about 50 to about 100.

摘要翻译： 可固化的粉末透明涂料组合物和具有多层涂料的涂布基材在涂层中具有作为主要成膜聚合物的至少一种环氧丙烯酸共聚物，其量为60至99.99重量％，10至40重量％的多元羧酸交联 代理商 重量百分比是基于可固化涂料组合物的固体。 单一主要的成膜环氧丙烯酸共聚物的数均分子量在约1000至5500的范围内; 计算的Tg在50至85℃的范围内。 环氧含量在35至85范围内，苯乙烯含量由苯乙烯单体的量的至多约25重量％范围内，基于形成共聚物的单体的重量百分数。 环氧丙烯酸共聚物的共混物具有一种聚合物，其是单环氧丙烯酸共聚物或具有数均分子量在约1000至约10,000范围内的聚合物，计算的Tg在约40℃至85℃的范围内 ，并且环氧树脂含量为单体总重量的40至60重量％，以制备环氧丙烯酸共聚物。 共混物的其它聚合物的数均分子量在约500至约3000的范围内，计算的Tg在约35℃至约125℃的范围内，并且来自缩水甘油基官能烯属不饱和的环氧基含量 单体，高于共混物的第一环氧官能丙烯酸共聚物的单体，并且在约50至约100的范围内。

公开(公告)号：US5939195A

公开(公告)日：1999-08-17

申请号：US803568

申请日：1997-02-20

申请人： Karen B. Allen ,  Kurt A. Humbert ,  Kurt G. Olson ,  Edward R. Coleridge ,  Roxalana L. Martin

发明人： Karen B. Allen ,  Kurt A. Humbert ,  Kurt G. Olson ,  Edward R. Coleridge ,  Roxalana L. Martin

IPC分类号： B05D7/00 ,  C09D163/00 ,  C09D201/02 ,  B32B27/38

CPC分类号： B05D7/534 ,  C09D163/00 ,  C09D201/02 ,  Y10T428/31511

摘要： A composite coating of a water-borne basecoat and an epoxy-acid clearcoat has improved performance characteristics of reduced yellowing or reduced tendency to chip through the formulation of the composite coating and the process for its application. The process comprises applying to the substrate a film-forming composition to form a basecoat and applying to the basecoat an epoxy-acid clear film-forming composition to form a transparent topcoat over the basecoat. The basecoat is a coating composition comprising a polymeric film-forming resin, aminoplast crosslinking agent and a pigment wherein the crosslinking agent is a partially or fully alkylated aminoplast and has a lower or higher imino content. The lower imino content promotes reduced yellowing of the clearcoat and the higher imino content promotes improved chip resistance when the pigment of the water-borne basecoat reduces yellowing effects. The transparent topcoat, or clearcoat, has an epoxy film forming resin and a polycarboxylic acid crosslinking agent.

摘要翻译： 水性底涂层和环氧 - 酸性透明涂层的复合涂层具有改善的性能特征，其通过复合涂层的配方及其应用的方法减少黄化或降低芯片的趋势。 该方法包括将成膜组合物施用到基底上以形成底涂层，并向底漆涂布环氧树脂透明成膜组合物，以在底涂层上形成透明的面漆。 底漆是包含聚合物成膜树脂，氨基塑料交联剂和颜料的涂料组合物，其中交联剂是部分或全部烷基化的氨基塑料并具有较低或更高的亚氨基含量。 较低的亚氨基含量促进透明涂层的减少黄化，当水性底漆的颜料降低黄变效应时，较高的亚氨基含量促进改善的耐碎屑性。 透明面漆或透明涂料具有环氧树脂成膜树脂和多元羧酸交联剂。