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AssigneeNippon Paint Co., Ltd.
InventorsHiroyuki Sakamoto, Ichiro Kawakami, Koji Izumiya, Takao Saito, Masahiro Nishio
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An electrodeposition coating composition that is excellent in bath stability and that can give a cured film enhanced in hardness and an electrodeposition coating process is provided. An electrodeposition coating composition to be used in an electrodeposition coating process which comprises the electrodeposition step of immersing a substrate in an electrodeposition coating composition and applying a voltage between the substrate as an anode or cathode and a counter electrode to thereby form a film of said electrodeposition coating composition on the surface of the substrate, and the heating step of heating said film obtained in the above electrodeposition step, and said electrodeposition coating composition comprising having electrodeposition potentiality against the curing reaction of said film.
An electrodeposition coating process which comprises a) immersing a substrate in an electrodeposition coating composition and applying a voltage between the substrate as an anode or cathode and a counter electrode to thereby form a film of said electrodeposition coating composition on the surface of the substrate, and b) heating said film obtained in a) above, and wherein said electrodeposition coating composition has electrodepositian potentiality against the curing reaction of said film, and contains a functional group capable of generating an activated chemical species in an electrode reaction as induced by applying said voltage in a) above, said activated chemical species is involved in the curing reaction of the film, and a curing system capable of progressing the curing reaction by the action of said activated chemical species, and wherein said curing system is a propargyl/allene curing system in which propargyl group is denatured to allene bond by an electrolysis generated base.
Dependencies are inferred from the claim text.