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    • 5. 发明授权
    • Electrocoat composition and process replacing phosphate pretreatment
    • 电涂组合物和工艺替代磷酸盐预处理
    • US08192603B2
    • 2012-06-05
    • US12345277
    • 2008-12-29
    • Abdellatif ChouaiTimothy S December
    • Abdellatif ChouaiTimothy S December
    • C25D13/06C25D13/12
    • C25D13/14C08G59/186C08G59/304C08K3/22C09D5/028C09D5/4434C09D5/4488C09D7/61C09D163/00C25D13/04C25D15/00
    • An aqueous coating composition comprises a metal oxide selected from the group consisting of bismuth oxide, vanadium oxide, manganese oxide, cobalt oxide, zinc oxide, strontium oxide, yttrium oxide, molybdenum oxide, zirconium oxide, lanthanum oxide, oxides of the lanthanide series of elements and combinations thereof and an electrodepositable binder, the binder comprising (a) a phosphorous-containing group in which X is a hydrogen, a monovalent hydrocarbon, an alkyl group such as an aminoalkyl group, or an oxygen atom having a single covalent bond to the phosphorous atom, and each oxygen atom has a covalent bond to a hydrogen atom, an alkyl group, an aryl group, an alkylaryl group, an arylalkyl group, or the resin, with the caveat that at least one oxygen atom has a covalent bond to resin; (b) a carboxylate group separated by from 2 to 4 carbons from an ester group; and (c) a tridentate amine ligand. The coating composition can be electrodeposited on a metal substrate to provide superior corrosion resistance.
    • 水性涂​​料组合物包含选自氧化铋,氧化钒,氧化锰,氧化钴,氧化锌,氧化锶,氧化钇,氧化钼,氧化锆,氧化镧,氧化镧,镧系元素的氧化物的金属氧化物 元素及其组合和可电沉积的粘合剂,所述粘合剂包含(a)含磷基团,其中X为氢,一价烃,烷基如氨基烷基或具有单个共价键的氧原子与 磷原子和每个氧原子与氢原子,烷基,芳基,烷基芳基,芳基烷基或树脂具有共价键,其中要注意的是至少有一个氧原子具有共价键 树脂; (b)由酯基分开2至4个碳的羧酸酯基; 和(c)三齿胺配体。 涂料组合物可以电沉积在金属基材上以提供优异的耐腐蚀性。