| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for mending an automobile coating film by which dirt due to soot or sand dust or the like is hardly stuck to a mended part after touch-up painting and the mended part has the same contamination resistance as that of an unmended part. SOLUTION: The method for mending the automobile coating film comprises a process (A) in which a part to be mended is touch-up painted and a process (B) in which a treating agent for hydrophilization is applied. The treating agent for hydrophilization comprises a hydrolysis product of a silicate compound expressed by formula (1) (wherein (n) denotes an integer between 1 and 30, R<SP>1</SP>s may be the same or different from each other and each denotes 1-8C alkyl which may has a substituent), a nonionic surfactant, water and a hydrophilic organic solvent. The nonionic surfactant has an alkylene oxide unit, HLB thereof is 10 to 15 and its content toward water is 0.02 to 10 mass%. COPYRIGHT: (C)2004,JPO
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