Patent ID: 6649266
Filing Date: 2003-11-18
Classification: B05D,B08B,B29C,C09K,Y10T

Abstract:
A substrate having a microstructured surface layer, the layer:(a) comprising a composition comprising: a condensate of at least one hydrolyzable compound of at least one element M selected from elements of the main groups III through V and transition groups II through IV of the periodic table, at least a part of this at least one hydrolyzable compound containing hydrolyzable groups A and non-hydrolyzable, carbon-containing groups B, where the total molar ratio of hydrolyzable groups A to non-hydrolyzable, carbon-containing groups B in the at least one hydrolyzable compound is between 10:1 and 1:2, and where between 0.1 mol % and 100 mol % of the non-hydrolyzable, carbon-containing groups B are groups Bâ€² that contain on average between 5 and 30 fluorine atoms that are attached to aliphatic carbon atoms at least two atoms distant from M, and (b) having a microstructuring such that the contact angle of the microstructured surface layer with respect to water or hexadecane is at least 5Â° higher than the contact angle of a corresponding non-microstructured surface layer.