| abstract |
A silylating agent (A) and a solvent (S) are contained, and the silylating agent (A) is a surface treatment agent containing the compound (A1) represented by the general formula (A-1), wherein Ra 1 is, It is a monovalent organic group or a hydrogen atom, Ra 2 is a monovalent organic group, and in Ra 1 and Ra 2 , an atom bonding to a nitrogen atom in the formula WHEREIN: Si atom is excluded, Ra 3 is fluorine It is an aliphatic hydrocarbon group optionally substituted with an atom, or a hydrogen atom, and Ra 4 is an aliphatic hydrocarbon group optionally substituted with a fluorine atom. [Formula 1] |