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    • 97. 发明授权
    • Powder coating composition comprising a polyester and a β-hydroxyalkylamide as crosslinker
    • 粉末涂料组合物,其包含聚酯和β-羟基烷基酰胺作为交联剂
    • US09169419B2
    • 2015-10-27
    • US13257409
    • 2010-03-25
    • Paulus Franciscus Anna BuijssenJohannes Marius PaauweCinderella Posthuma-Van-TentHendrik Johannes VerhoefJuul Cuijpers
    • Paulus Franciscus Anna BuijssenJohannes Marius PaauweCinderella Posthuma-Van-TentHendrik Johannes VerhoefJuul Cuijpers
    • C08G63/60B32B27/06C08G63/44C09D167/00C08L67/00C09D5/03C08K5/20
    • C09D167/00C08K5/20C08L67/00C09D5/037Y10T428/24802C08L2666/02
    • The invention relates to a thermosetting powder coating composition comprising a crosslinker and a polyester, wherein the polyester has functional groups which functional groups are capable of reacting with β-hydroxyalkylamide groups, wherein the polyester is prepared from at least the following monomers: neopentylglycol, a difunctional alcohol other than neopentylglycol; isophthalic acid, terephthalic acid, optionally adipic acid and a branching monomer chosen from the group of an at least trifunctional carboxylic acid, an at least trifunctional alcohol, an at least trifunctional hydroxy carboxylic acid and mixtures thereof, wherein the amount of difunctional alcohol other than neopentylglycol in the polyester ranges from 1 to 50% w/w based on the polyester, wherein the amount of isophthalic acid in the polyester ranges from 6 to 35% w/w based on the polyester, wherein the polyester has a functionality of at least 2.1, wherein the crosslinker is a compound having β-hydroxyalkylamide groups. This thermosetting powder coating composition has the ability to be cured at low temperature, while at the same time being able provide powder coatings having at least two of the following three properties: limited blooming to no blooming, an acceptable smoothness, sufficient impact resistance.
    • 本发明涉及一种包含交联剂和聚酯的热固性粉末涂料组合物,其中该聚酯具有官能团,其官能团能够与β-羟基烷基酰胺基团反应,其中该聚酯由至少以下单体制备:新戊二醇, 新戊二醇以外的二官能醇; 间苯二甲酸,对苯二甲酸,任选的己二酸和选自至少三官能羧酸,至少三官能醇,至少三官能羟基羧酸及其混合物的支化单体,其中二官能醇的量除了 聚酯中的新戊二醇的范围为1至50%w / w,其中聚酯中的间苯二甲酸的含量为6至35%w / w,其中聚酯的官能度至少为 2.1,其中交联剂是具有β-羟基烷基酰胺基团的化合物。 该热固性粉末涂料组合物具有在低温下固化的能力,同时能够提供具有以下三种性质中的至少两种的粉末涂料:有限的起霜至无起霜,可接受的光滑度,足够的耐冲击性。