An alkyd surfactant which is effective in emulsifying alkyd resins is formed by copolymerization of at least one monomer having a hydrophilic group, at least one ethylenically unsaturated fatty acid or ester, and optionally, at least one polyol, and has a low degree of branching. Stable alkyd emulsions are formed by emulsification of alkyd resins with the alkyd surfactant. Since the alkyd surfactant has ethylenically unsaturated hydrophobe groups which can react with the alkyd resin during curing, the alkyd surfactant is not subject to migration, blooming or leaching from cured coatings.
一种可有效乳化醇酸
树脂的醇酸
树脂表面活性剂是由至少一种具有亲
水性基团的单体、至少一种
乙烯基不饱和
脂肪酸或酯、以及可选的至少一种多元醇共聚而成,具有较低的支化度。醇酸
树脂与醇酸表面活性剂乳化后可形成稳定的醇酸乳液。由于醇酸表面活性剂具有
乙烯不饱和憎
水基团,可在固化过程中与醇酸
树脂发生反应,因此醇酸表面活性剂不会从固化涂料中迁移、开花或浸出。