Substrates provided with a microstructured surface, methods for the production thereof, and their use

US6649266B1 · kind B1 · utility

Assignee

• Institut fuer Neue Materialien gemeinnuetzige GmbH · DE

Inventors

• Frank Gross · Wilbraham, US
• Martin Mennig · Idar-Oberstein, DE
• Peter W. Oliveira · Riegelsberg, DE
• Helmut Schmidt · Riegelsberg, DE
• Stefan Sepeur · Wadgassen, DE

Key dates

• Filing date: Oct 15, 2001
• Grant date: Nov 18, 2003
• Expiry date: Oct 15, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Substrates provided with a microstructured surface have a surface layer which(a) comprises a composition comprising condensates of one or more hydrolysable compounds of at least one element M from main groups III to V and/or transition groups II to IV of the Periodic Table of the Elements, at least some of these compounds containing not only hydrolysable groups A but also non-hydrolysable, carbon-containing groups B and the total molar ratio of groups A to groups B in the parent monomeric starting compounds being from 10:1 to 1:2, from 0.1 to 100 mol % of the groups B being groups B′ containing on average from 5 to 30 fluorine atoms which are attached to one or more aliphatic carbon atoms distanced from M by at least two atoms, and(b) has a microstructuring of such kind that the contact angle with respect to water or hexadecane is at least 5° higher than the contact angle of a corresponding smooth surface.The substrates provided with a microstructured surface are particularly suitable as transparent or translucent easy-to-clean systems.