Cationic electrodeposition process
    4.
    发明授权
    Cationic electrodeposition process 失效
    阳离子电沉积工艺

    公开(公告)号:US4285789A

    公开(公告)日:1981-08-25

    申请号:US119621

    申请日:1980-02-07

    摘要: In a cationic electrodeposition process for coating an electric conductive substrate as a cathode with an electrodeposition process-coating composition containing a resin; an improvement characterized in that said resin is a resin having hydroxyl groups, tertiary amino groups, quaternary ammonium groups and blocked isocyanate groups which are reactive with hydroxyl group at an elevated temperature which is obtained by reacting(a) a polyisocyanate;(b) a polyhydroxyl compound;(c) a hydroxyl compound having tertiary amino group;(d) a hydroxyl compound having quaternary ammonium group; and(e) a monofunctional blocking agent.The coated layer has excellent anticorrosive characteristic, mechanical characteristics and the coating composition has excellent stability for aging.

    摘要翻译: 在用包含树脂的电沉积工艺涂料组合物涂覆导电基材作为阴极的阳离子电沉积方法中; 其特征在于,所述树脂是具有羟基,叔氨基,季铵基和在高温下与羟基反应的封端异氰酸酯基的树脂,其通过使(a)多异氰酸酯反应获得; (b)多羟基化合物; (c)具有叔氨基的羟基化合物; (d)具有季铵基团的羟基化合物; 和(e)单官能封端剂。 涂层具有优异的防腐蚀特性,机械特性和涂料组合物具有优异的老化稳定性。