Fluoroalkyl silanes are a class of compounds useful for various industrial purposes. For example, fluoroalkyl silanes which have hydrolysable groups (called hydrolysable fluoroalkyl silanes), are compounds useful as surface treatment agents which provide durable hydrophobic and oleophobic coatings. In general, hydrolysable fluoroalkyl silanes can be represented with the following formula: (RO—)3Si—RT
wherein R is H or an alkyl; and RT is a monovalent organic compound terminated by a perfluoroalkyl group. When used to coat a surface, the (RO—)3 moiety reacts (via hydrolysis) with various chemical groups of the surface (e.g., hydroxyl, amine, or other reactive groups) thereby bonding the fluoroalkyl silane to the surface The RT moiety comprises a divalent organic linking group which links the silicon atom to a terminal group rich in fluorine atoms whose unique electronic properties impart desirable hydrophobic and oleophobic properties in a surface coating. Modification of the RT moiety is useful in the engineering of fluoroalkyl silanes. The present invention provides for fluoroalkyl silanes having RT moieties which have not been heretofore considered.
氟烷基
硅烷是一类在各种工业用途中有用的化合物。例如,具有可
水解基团的氟烷基
硅烷(称为可
水解氟烷基
硅烷)是有用的表面处理剂,可提供耐用的疏
水和疏油涂层。一般来说,可
水解氟烷基
硅烷可以表示为以下公式:(RO—)3Si—RT,其中R为H或烷基;RT为以
全氟烷基为末端基团的一价有机化合物。当用于涂覆表面时,(RO—)3基团通过
水解与表面的各种
化学基团(例如羟基,胺基或其他反应基团)反应,从而将氟烷基
硅烷与表面结合。RT基团包括一个二价有机连接基团,将
硅原子连接到富含
氟原子的末端基团,其独特的电子性质赋予表面涂层理想的疏
水和疏油性质。修改RT基团对于工程氟烷基
硅烷是有用的。本发明提供了具有未被考虑过的RT基团的氟烷基
硅烷。