| abstract |
A perfluoro(poly)ether group-containing silane compound represented by formula (A1), (A2), (B1) or (B2), wherein the symbols are as defined in the description. Also disclosed is a surface-treating agent including the silane compound, a pellet including the surface-treating agent and an article including a base material and a layer formed from the silane compound or surface-treating agent. n (Rf-PFPE) α′ -X 1 —(SiR a k R b l R c m ) α (A1)n n (R c m R b l R a k Si) α —X 1 -PFPE-X 1 —(SiR a k R b l R c m ) α (A2)n n (Rf-PFPE) γ′ —X 2 —(CR d k2 R e l2 R f m2 R g n2 ) γ (B1)n n (R g n2 R f m2 R e l2 R d k2 C) γ —X 2 -PFPE-X 2 —(CR d k2 R e l2 R f m2 R g n2 ) γ (B2) |