Composition of thermo-hardening powders, varnishes and paints, process of obtaining a low gloss coating on an article, satin and opaque coatings, and articles.

摘要

TERMOBILITY REVIEW COMPOSITIES AT POP,VERNIZES AND TINTAS, PROCESS FOR THE OBTENATION OF A POINT REVIEW ON AN ARTICLE, ACCEPTANTED REVESTENTS AND OPACOS, AND ARTICLES"Compositions of thermohardened powders coating comprising (a) an amorphous polyester containing carboxyl groups, rich in isophthalic acid and neopentyl glycol, eventually branched by a polycarboxylic acid or polyol containing at least three functional groups;(b) an amorphous semi-crystalline polyester containing carboxyl groups prepared from one or more of the various dicarboxylic acids saturated with a linear chain and an aliphatic diol saturated with a linear or cyclic chain eventually branched by polycarboxylic acid or polycarboxylic polyolcontains at least three functional groups and has a melting point (Tm) of at least 40(C) and an acid index of 5 to 50 mg KOH / g and (c) a reticulation agent. These compositions are useful for preparing paints and varnishes powder that provide excellent quality coatings whose brightnessmeasured at a 60th angle,according to ASTM D 523 is always less than 50%,either acetine or opaque coatings.