SURFACE TREATMENT AGENT

PROBLEM TO BE SOLVED: To provide a surface treatment agent useful for forming a layer having friction durability in addition to water repellency, oil repellency, and antifouling properties on various substrates including a resin.SOLUTION: A double bond-containing perfluoro(poly)ether compound is represented by formula (1). [Each Rf is independently a Calkyl group which may be substituted with one or more fluorine atoms; each PFPE is independently (OCF)-(OCF)-(OCF)-(OCF); a to d are each independently an integer of 0-200; the sum of a to d is at least 1; each Q is independently a divalent organic group; X is a tri- to decavalent siloxane group; each Y is independently a divalent organic group; each Z is independently a group having at least three carbon-carbon double bond-containing groups; and α and α' are each independently an integer of 1-9.]SELECTED DRAWING: None 【課題】樹脂を含む各種基材に、撥水性、撥油性および防汚性に加え、摩擦耐久性を有する層を形成するのに有用な表面処理剤の提供。【解決手段】式（１）で表される二重結合含有パーフルオロ（ポリ）エーテル化合物。［Ｒｆは各々独立に、１以上のフッ素原子に置換されていてもよいＣ１−１６のアルキル基；ＰＦＰＥは各々独立に、（ＯＣ４Ｆ８）ａ−（ＯＣ３Ｆ６）ｂ−（ＯＣ２Ｆ４）ｃ−（ＯＣＦ２）ｄ；ａ〜ｄは各々独立して０〜２００の整数；ａ〜ｄの和は少なくとも１；Ｑは各々独立に、２価の有機基；Ｘは３〜１０価のシロキサン基；Ｙは各々独立に、２価の有機基；Ｚは各々独立に、少なくとも３つの炭素−炭素二重結合含有基を有する基；α及びα'は１〜９の整数］【選択図】なし