2k coating composition; method of preparation of coating composition; composition kit 2k; use of coating composition; and coated substrate

摘要

summary coating composition 2k; method of preparation of coating composition; composition kit 2k; use of coating composition; and coated substrate The present invention provides a coating composition and its method of preparation and use. the coating composition comprises a first component containing a silane mixture having the formula r1n-si- (or2) 4-n, wherein r1 is selected from substituted and unsubstituted alkyl, substituted and unsubstituted cycloalkyl, heterocycloalkyl substituted and unsubstituted, substituted and unsubstituted aryl, substituted and unsubstituted heteroaryl, substituted and unsubstituted alkylthio, substituted and unsubstituted alkylamino, substituted and unsubstituted perfluoroalkyl and substituted and unsubstituted alkyl halide of 1 to 15 carbon atoms R2 is C1-C3 alkyl, n = 0-4 and n on average not more than 1 and not less than 0.54; a second component containing an aqueous dispersion of functionalized nanoparticles whose functional groups are capable of condensation with hydroxyl groups; and an organic and / or inorganic acid catalyst. The composition is capable of forming a coating with high hardness, high scratch resistance, good thermal impact resistance, acid and stain inertness, UV transparency and excellent adhesion to substrates such as metal and glass.