CURABLE FILM-FORMING COMPOSITIONS DEMONSTRATING BURNISH RESISTANCE AND LOW GLOSS, AND METHODS OF IMPROVING BURNISH RESISTANCE OF A SUBSTRATE

摘要

The present invention is directed to curable film-forming compositions comprising: (a) a polymeric binder comprising: (i) a polysiloxane having reactive functional groups and in which is dispersed protonated silica particles having an average particle size of 2 to 20 microns; and (ii) optionally, at least one additional polymeric resin different from the polysiloxane (i), having reactive functional groups; and (b) a curing agent containing functional groups that are reactive with the reactive functional groups of (i) and/or (ii). After application to a substrate as a coating and after curing, the curable film-forming composition demonstrates an initial 85 gloss of less than 30 and an increase in 85 gloss of no more than 10 gloss units when subjected to various ABRASION TEST METHODS as defined herein. Also provided is a method of improving burnish resistance of a substrate using the curable film-forming compositions of the present invention.