| abstract |
An object of the present invention is to provide a surface treatment agent capable of contributing to the formation of a surface treatment layer having better friction durability. As a solution, the present invention provides a surface treatment agent which includes: a fluoropolyether group-containing silane compound represented by the formula (1a) or (1b), an amino group-containing silane compound represented by the formula (2), and an epoxy group-containing silane compound represented by the formula (3). In the formula, each symbol has the same meaning as the description in the specification. R<SP>F1</SP>[alpha]-X<SP>A</SP>-R<SP>Si</SP>[beta] (1a) R<SP>Si</SP>[gamma]-X<SP>A</SP>-R<SP>F2</SP>-X<SP>A</SP>-R<SP>Si</SP>[gamma] (1b) SiR<SP>N</SP>s1R<SP>81</SP>s2R<SP>82</SP>s3 (2) SiR<SP>E</SP>t1R<SP>91</SP>t2R<SP>92</SP>t3 (3). |