PVdF-based powder coatings
AssigneeLabofina, S.A.
InventorsWillem Sietses, Tjalling M. Plantenga, Jean-Paul Dekerk
Life of this patent
Estimating the term…
Abstract
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 about 80:20 to 40:60, with pigments, and with a small amount of flow promoter, (ii) pelletizing the mixture of (i), 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 the above prepared powder coating product on a substrate, and (b) subjecting to a heat treatment.
Claims14
A process for preparing pigmented PVdF-based powder coating products, comprising the steps of:
- (i) mixing PVdF resin with at least one compatible thermoplastic resin and at least one pigment,
- (ii) pelletizing the resulting mixture of (i), and
- (iii) cryogenically grinding the pellets of (ii) while sieving out the larger particles.
Dependencies are inferred from the claim text.