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    • 5. 发明授权
    • Aqueous epoxy-phenolic coatings
    • 水性环氧酚醛涂料
    • US4454265A
    • 1984-06-12
    • US477490
    • 1983-03-21
    • Anthony J. TortorelloDonald R. Roberts
    • Anthony J. TortorelloDonald R. Roberts
    • C09D161/04C08G59/40C09D163/00C09D3/56C09D3/58
    • C08G59/4042C09D163/00
    • Aqueous thermosetting coating compositions adapted for roll coat application are disclosed in which water has dispersed therein an adduct of a diglycidyl ether of a bisphenol having a 1,2-epoxy equivalency of at least 1.2 and an average molecular weight of from about 2000 to about 5000 with a stoichiometric proportion, based on epoxy and secondary amine, of diprimary amine having a single secondary amine group and each primary amine group blocked by a ketimine group. At least about 50% of the amine groups of this adduct are protonated with a volatile acid, and the ketimine groups hydrolyze in the water to provide primary amine functionality and ketone solvent in the aqueous medium. From 20% to 50%, based on total resin solids, of water insoluble, heat-hardening phenol-formaldehyde resin curing agent is employed for cure. The curing agents are added to the adduct in solution in water-miscible organic solvent, and cresol-formaldehyde curing agents are preferred.
    • 公开了适用于辊涂层的水性热固性涂料组合物,其中水分散有1,2-环氧当量为至少1.2,平均分子量为约2000至约5000的双酚的二缩水甘油醚的加合物 具有基于环氧基和仲胺的化学计量比例的具有单个仲胺基团的二元胺和由酮亚胺基封端的每个伯胺基团。 该加成物的至少约50%的胺基用挥发性酸质子化,酮亚胺基团在水中水解,以在水性介质中提供伯胺官能团和酮溶剂。 20%至50%,基于总树脂固体,使用水不溶性,热硬化酚醛树脂固化剂固化。 将固化剂加入到与水混溶的有机溶剂中的溶液中的加合物中,并且优选使用甲酚 - 甲醛固化剂。