Abstract: A fluoropolyether group-containing compound represented by formula (1) or (2) below: wherein RSi is represented by formula (Si), and the symbols are as defined in the description —X1—SiRa1p1Rb1q1Rc1r1??(S1).

Abstract: A fluoropolyether group-containing silane compound represented by the following formula (1) or (2): wherein RF1, XA, R1, XB, RSi and RF2 are as defined herein. Also disclosed is a surface-treating agent containing the fluoropolyether group-containing silane compound and an article including a substrate and a layer on a surface of the substrate, wherein the layer is formed of the fluoropolyether group-containing silane compound.

Abstract: An article including a base material of zirconium oxide, an intermediate layer located on the base material, and a surface treating layer formed from a surface treating agent containing a fluorine-containing silane compound located on the intermediate layer, wherein the intermediate layer includes one or more metal oxides. Also disclosed is a process for forming the surface treating layer and a process for producing the article.

Abstract: A fluoropolyether group-containing silane compound represented by the following formula (I): RF1—R4—(OR3)m—R5—SiR1nR23-n [wherein the symbols are as described in the specification]. Also disclosed is a surface-treating agent containing the silane compound; a pellet including the surface-treating agent; and an article including a substrate and a layer on a surface of the substrate, wherein the layer is formed of the silane compound or the surface-treating agent.

Abstract: A surface-treating agent containing a fluoropolyether group-containing silane compound (A) and a fluoropolyether group-containing silane compound (B) represented by formula (1) or (2) below: RF1?—XA—RSi???(1) RSi?—XA—RF2—XA—RSi???(2) wherein RF1, XA, RSi, RF2, ?, ? and ? are as defined herein.

Abstract: A surface-treating agent including a component (A) which is at least one fluoropolyether group-containing compound of formula (1A) or (2A) shown below; a component (B) which is at least one fluoropolyether group-containing compound of the following formula (1B) or (2B) shown below; and a component (C) which is one or more fluorine-containing oils: Rf1A?1—XA—RA?1??(1A) RA?1—XA—Rf2A—XA—RA?1??(2A) Rf1B?2—XB—RB?2??(1B) RB?2—XB—Rf2B—XB—RB?2??(2B) wherein formulas (1A), (2A), (1B and (2B) are as defined herein.

Abstract: A fluoropolyether group-containing compound of the following formula (1) or (2): RF1—X—RSi??(1) RSi—X—RF2—X—RSi??(2) wherein RF1, RSi and RF2 are as defined herein.

Abstract: A fluoropolyether group-containing compound of formula (1) or (2) below: RF1—X—RSi??(1) RSi—X—RF2—X—RSi??(2) wherein RF1, RSi and RF2 are as defined herein.

Abstract: A fluoropolyether group-containing compound of formula (1) or (2): wherein RF1, RX1, RX2 and RSi are as defined herein.

Abstract: A fluoropolyether group-containing compound of the following formula (1): wherein RF1 and RSi are as defined herein.

Abstract: A fluoropolyether group-containing compound represented by formula (1) or (2) below: wherein RSi is represented by formula (Si), and the symbols are as defined in the description —X1—SiRa1p1Rb1q1Rc1r1??(S1).

Abstract: A surface-treating agent containing (1) at least one perfluoro(poly)ether group containing silane compound of any of the formulae (A1), (A2), (B1), (B2), (C1), (C2), (D1) and (D2): and (2) a fluorine containing oil of the general formula (O): Rf1-PFPE?-Rf2??(O) wherein: each of the symbols are as defined herein. A content of the fluorine containing oil having a molecular weight of 2.0 or more times higher than the number average molecular weight of the fluorine-containing oils among the fluorine containing oil of the formula (O) is 10 mol % or less.

Abstract: A surface-treating agent containing (1) at least one perfluoro(poly)ether group containing silane compound of any of the formulae (A1), (A2), (B1), (B2), (C1), (C2), (D1) and (D2): and (2) a fluorine containing oil of the general formula (O): Rf1-PFPE?-Rf2??(O) wherein: each of the symbols are as defined herein. A content of the fluorine containing oil having a molecular weight of 2.0 or more times higher than the number average molecular weight of the fluorine-containing oils among the fluorine containing oil of the formula (O) is 10 mol % or less.

Abstract: An article including a base material of zirconium oxide, an intermediate layer located on the base material, and a surface treating layer formed from a surface treating agent containing a fluorine-containing silane compound located on the intermediate layer, wherein the intermediate layer includes one or more metal oxides. Also disclosed is a process for forming the surface treating layer and a process for producing the article.