PULVERBESCHICHTUNG AUF POLYVINYLIDENFLUORID-BASIS.

摘要

A process for preparing pigmented PVdF-based powder coating products is disclosed, which comprises the steps of (i) mixing PVdF resin with a compatible thermoplastic resin, preferably PMMA, in a weight ratio of from 80:20 to 40:60, with pigments, and with a small amount of flow promoter, (ii) extruding and granulating, and (iii) cryogenically grinding the pellets and sieving the large particles. Also disclosed is a process for coating a substrate, comprising the steps of (a) applying said powder coating product on a substrate, and (b) subjecting to a heat treatment.