There is disclosed solution copolymers of monoethylenically unsaturated monomers including a proportion of monoethylenically unsaturated carboxylic acid, with an oxirane- free epoxy acid ester phosphate having adducted onto the oxirane groups of a starting polyepoxide at least 10% thereof of ortho phosphoric acid as well as at least 0.5% by weight of a monoester of a saturated monohydric alcohol with a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization, the remaining oxirane groups of the polyepoxide being esterified with monocarboxylic acid, etherified with monoalcohol or hydrolyzed with water. These copolymers can be neutralized with a volatile amine, especially ammonia and cured with aminoplast or phenoplast resins to provide coatings which cure to greater flexibility and better resistance to blushing on pasteurization exposure.
本发明公开了单
乙烯基不饱和单体的溶液共聚物,包括一定比例的单
乙烯基不饱和
羧酸与不含
环氧乙烷的环氧
磷酸酯的共聚物,该环氧
磷酸酯在起始聚
环氧化物的
环氧乙烷基团上加成了至少 10%的正
磷酸以及至少 0.5%(按重量计)的饱和一元醇与单
乙烯不饱和二
羧酸的单酯,这种单酯可抗均聚,聚
环氧化物的其余
环氧乙烷基团与单
羧酸酯化,与单醇醚化或与
水水解。这些共聚物可以用挥发性胺,特别是
氨中和,并用
氨基塑料或苯塑
树脂固化,以提供固化后具有更大柔韧性和更强抗巴氏杀菌暴露时发红的涂层。