公开(公告)号：US20080003368A1

公开(公告)日：2008-01-03

申请号：US11762998

申请日：2007-06-14

申请人： Timothy December ,  Lawrence Sacharski ,  Cynthia Stants

发明人： Timothy December ,  Lawrence Sacharski ,  Cynthia Stants

IPC分类号： B05D3/02 ,  C09D163/00

CPC分类号： C09D5/03 ,  C08G59/226 ,  C08G59/24 ,  C08L33/08 ,  C08L67/02 ,  C09D163/00 ,  C08L2666/02

摘要： The invention provides powder coatings having at least 25% by weight of an epoxy functional particulate component (a) having a Tg of at least 50° C. and of the structure: wherein n is a number from 0 to 15, and R1 is selected from the group consisting of linear, branched or cycloaliphatic C2-C20 alkyl groups and mixtures thereof, based on the total weight of all epoxy functional particulate components in the powder coating composition. The powder-coating compositions of the invention are suitable for use as primers over electrocoat and under composite basecoat/clearcoat systems. Powder primers of the invention provide simultaneous improvements in yellowing, chip resistance, UV durability and color stability.

摘要翻译： 本发明提供粉末涂料，其具有至少25重量％的T a至少为50℃的环氧官能颗粒组分（a），其结构如下：其中n为 0至15，并且R 1选自直链，支链或脂环族C 2 -C 20烷基及其混合物 ，基于粉末涂料组合物中所有环氧官能颗粒组分的总重量。 本发明的粉末涂料组合物适用于电涂层和复合底漆/透明涂料体系下的引物。 本发明的粉末底漆同时提供黄变，耐芯片性，UV耐久性和颜色稳定性。