| abstract |
A perfluoro(poly)ether group containing silane compound represented by the formula (1a) or the formula (1b): n A-Rf—X—SiQ k Y 3-k (1a)n n Y 3-k Q k Si—X—Rf—X—SiQ k Y 3-k (1b)n n as defined herein. Also disclosed is a process for producing the compound, a surface-treating agent containing the compound, a pellet containing the surface-treating agent and an optical member including a base material and a layer formed on a surface of the base material from the compound. |