| abstract |
(57) [Summary] (With correction) [Solution] The following general formula (1) (In the formula, Rf is a divalent linear perfluoropolyether group, R is an alkyl group having 1 to 4 carbon atoms or a phenyl group, X Is a hydrolyzable group, n is 0 to 2, m is an integer of 1 to 5, and a is 2 or 3. Perfluoropolyether-modified silane represented by [Effect] Since the perfluoropolyether-modified silane in the present invention does not contain a polar group, the water and oil repellency, It has excellent releasability, chemical resistance, lubricity, durability, antifouling property, and fingerprint wiping, and can be used as a surface treatment agent to coat the surface of various substrates. It can be applied to antireflection filters. In addition, the antireflection filter of the present invention is characterized by being resistant to dirt, easy to wipe off the dirt, having good surface slipperiness and being hardly damaged, and maintaining their performance for a long period of time. |