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    • 1. 发明授权
    • Electrodeposition coating method
    • 电沉积涂布法
    • US4840715A
    • 1989-06-20
    • US229754
    • 1988-08-08
    • Masayuki MisawaToshio OgasawaraMasahiko SaganeYasuyuki HirataMasafumi Kume
    • Masayuki MisawaToshio OgasawaraMasahiko SaganeYasuyuki HirataMasafumi Kume
    • C09D5/44C25D13/00
    • C09D5/44C09D5/448
    • A method of electrodeposition coating, which comprises performing a first electrodeposition coating on an article as a cathode using (I) a cationic electrodeposition paint comprising (A) a resin and (B) at least one pigment, said pigment (B) containing at least 5% by weight of a pigment having an oil absorption of at least 100 and being incorporated so that the total oil absorption of the pigment (B) is in the range of 1,000 to 10,000 per 100 g of the resin (A), then while the resulting coated film is in the uncured state, performing a second electrodeposition coating on it using (II) an emulsion-type cationic electrodeposition coating paint comprising a resin (C) and a pigment (D) and having a minimum electrodeposition current density of not more than 0.7 mA/cm.sup.2 and a degree of emulsification of at least 80% by weight, said pigment (D) having a lower total oil absorption than the total oil absorption of the pigment (B) in the cationic electrodeposition paint (I), and thereafter curing the applied films under heat to form a composite cured coated film.
    • 一种电沉积涂覆方法,其包括使用(I)阳离子电沉积涂料(包括(A)树脂和(B)至少一种颜料)对作为阴极的物品进行第一电沉积涂层,所述颜料(B)至少含有 5重量%的吸油率至少为100的颜料并入其中,使得颜料(B)的总油吸收量相对于每100g树脂(A)为1,000至10,000,然后同时 所得到的涂膜处于未固化状态,使用(II)包含树脂(C)和颜料(D)的乳液型阳离子电沉积涂料并且具有最小的电沉积电流密度,进行第二电沉积涂层 所述颜料(D)具有比阳离子电沉积涂料(I)中颜料(B)的总吸油量更低的总吸油量,大于0.7mA / cm 2和乳化度为至少80重量% 然后固化 加热涂覆的薄膜以形成复合固化的涂膜。