PVdF-based powder coatings

Details PVdF-based powder coatings PVdF-based powder coatings

1988-11-08

1991-07-09

Lilling, Herbert J.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264118, 264141, 427195, 427221, 428402, 428407, 428413, 428421, 523307, 524407, 524447, 524520, B29B 788, C08K 300, B32B 516, B05D 302

Patent

active

050303945

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.

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patent: 4563393 (1986-01-01), Kitagawa et al.
patent: 4687801 (1987-08-01), Mitani et al.
patent: 4770939 (1988-09-01), Sietsess et al.

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