To obtain a plate repairing agent which can be applied to give a high hardness and heat resistance and used in a secondary processing to show excellent properties, and to provide a method for applying the same.
The repairing agent comprises a main component and a crosslinking agent, wherein the main component comprises an aqueous resin emulsion and/or an aqueous latex composed of a polymer having a terminal functional group having an active hydrogen, a filler having a content of 30 wt% or more, and a surfactant; the crosslinking agent is one or more selected from the group consisting of (1) a polyfunctional aziridine compound having two or more aziridinyl groups in the molecule, (2) an aqueous epoxy compound, (3) an organic silicon compound, and (4) an isocyanate compound; and the cured product of the repairing agent has a D hardness Y between Y1 and Y2 (Y1≤Y≤Y2) provided Y1 and Y2 are defined by equations (1) and (2), when the cured product is immersed in boiling water for 4 hr and then dried at 60°C when measured at a constant time interval X by using a type D durometer (JIS K7215): (1) Y1=7X+20, and (2) Y2=7X+60, where Y1 and Y2 are each a D hardness, and X is a drying time (hr) after boiling.
TASHIRO YASUSHI
TANAKA KATSUAKI
Toshio Nakamura
Miyazaki Yoshio
Mitsuo Tateishi
Tsutomu Kato
Kaoru Onozuka
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