| abstract |
A surface treatment agent used for treating a substrate which has a surface having two or more regions made of materials that are different from each other, the agent including a compound (H) represented by Formula (H-1). In the formula, R 1 represents a linear or branched alkyl group having 1 to 30 carbon atoms, a linear or branched fluorinated alkyl group having 1 to 30 carbon atoms, an aromatic hydrocarbon group, or a cycloalkyl group having 3 to 12 carbon atoms, and R 2 represents a hydrogen atom, a linear or branched alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 3 to 12 carbon atoms) |