Self-crosslinking compositions based on fluorine-containing polycondensates

US6630205B2 · kind B2 · utility

Assignee

• INSTITUT FUR NEUE MATERIALIEN gem. GmbH. · DE

Inventors

• Stefan Brueck · Riegelsberg, DE
• Christoph Lesniak · Kempten (Allgäu), DE
• Hermann Schirra · Riegelsberg, DE
• Helmut Schmidt · Riegelsberg, DE

Key dates

• Filing date: May 31, 2002
• Grant date: Oct 7, 2003
• Expiry date: May 31, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/26
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a method for coating a substrate according to which a self-crosslinking coating composition is produced on the basis of a) at least one hydrolysable silane with at least one nonhydrolysable substituent, said silane having one or more electrophilic groups X on at least one nonhydrolysable substitutent, b) at least one hydrolysable silane with at least one nonhydrolysable substituent, said silane having one or more nucleophilic groups Y on at least one nonhydrolysable substituent, c) at least one hydrolysable silane with at least one nonhydrolysable carbonic group that has an average of 2 to 30 fluorine atoms that are bound to one or more aliphatic carbon atoms that are separated from the silicon atom by at least two atoms. The silanes (a), (b) and/or (c) are optionally precondensed and either the silanes (a) may be completely or partially replaced by organic compounds with at least two groups X or the silanes (b) may be completely or partially replaced by organic compounds with at least two groups Y. The self-crosslinking coating composition is then applied to a substrate and allowed to cure at ambient temperature (below 40° C.) to form a coating.