Method for making matt finish coatings

摘要

Coatings having a matt finish are made by applying a powder varnish composition to a substrate and thereafter reacting the varnish at a temperature of 100 DEG to 240 DEG C to form the matt finish coating. The powder varnish composition is a finely divided, particulate mixture of I. A 1,2-EPOXY COMPOUND HAVING A MELTING POINT GREATER THAN 40 DEG C and containing at least one 1,2-epoxy group; and II. A SALT OF A POLYCARBOXYLIC ACID (SUCH AS PYROMELLITE ACID) CONTAINING THREE OR MORE CARBOXYL GROUPS AND A CYCLIC AMIDINE (SUCH AS 2-PHENYLIMIDAZOLINE).