One-pack coating composition and coating method using the same

Abstract

A one-pack coating composition is disclosed. The composition comprises (A) an oligomer or polymer containing an acid anhydride group, a blocked hydroxyl group and an epoxy group as indispensable functional groups in the same or different molecules, (B) a heat-potential curing catalyst which comprises a complex of an organometallic compound and an electron-donating compound or an onium salt and which exhibits its activity upon heating, (C) an ultraviolet absorber comprising a triazine or oxalic anilide, and (D) a hindered amine light stabilizer having a piperidine ring of the following structure: wherein R represents R1—CO—, a C2 to C20 alkyl group or R1—O— (R1 being a C2 to C20 alkyl group), and R2, R3, R4 and R5 independently from each other represent a C1 to C3 alkyl group, or a phenolic antioxidant. A method for coating using this coating composition is also disclosed.

Dependencies are inferred from the claim text.