阅读说明：本技术 粉末涂料组合物 (Powder coating composition ) 是由 R·H·G·布林克威斯 R·沃森 M·博斯马 P·J·M·D·埃尔弗林克 A·J·W·布塞尔 于 2019-01-25 设计创作，主要内容包括：本发明涉及适用于低温粉末涂料交联的粉末涂料组合物,所述粉末涂料组合物通常在固化温度75-140℃,可用于粉末涂覆热敏基材,如MDF、木材、塑料或热敏金属合金。所述粉末涂料组合物包含可交联组分A,其具有活化亚甲基或次甲基中的至少2个酸性C-H供体基团；可交联组分B,其具有至少2个活化不饱和受体基团C＝C,在催化剂体系C的作用下,通过Real Michael Addition与组分A反应,所述催化剂体系C优选为潜伏催化剂体系。本发明还涉及制造此类粉末涂料组合物的方法,涉及使用所述粉末涂料组合物涂覆制品的方法以及所得的涂覆制品。本发明还涉及用于粉末涂料的特定聚合物,以及特定催化剂体系在此类粉末涂料组合物中的用途。(The present invention relates to powder coating compositions suitable for the crosslinking of low temperature powder coatings, which are generally useful for powder coating heat sensitive substrates such as MDF, wood, plastics or heat sensitive metal alloys at curing temperatures of 75 to 140 ℃. The powder coating composition comprises a crosslinkable component a having at least 2 acidic C-H donor groups of activated methylene or methine groups; crosslinkable component B, which has at least 2 activated unsaturated acceptor groups C ═ C, is reacted with component a by Real Michael Addition under the action of catalyst system C, which is preferably a latent catalyst system. The invention also relates to a process for making such powder coating compositions, to a process for coating an article using said powder coating composition and to the resulting coated article. The invention also relates to specific polymers for powder coatings, and to the use of specific catalyst systems in such powder coating compositions.)