Powder coating for packaging containers

Details Powder coating for packaging containers Powder coating for packaging containers

C - Chemistry, Metallurgy

09

D

C09D 5/03 (2006.01) C09D 163/00 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2198804

The present invention relates to a powder coating for application to packaging containers, 1) the powder coating comprising A) at least one thermoplastic, B) if desired, at least one thermoset, preferably an epoxy resin having an epoxy equivalent weight of from 400 to 3000, C) if desired, pigments, fillers, catalysts, typical powder coating additives such ae degassing agents, levelling agents, free-radical scavengers and antioxi- dants, and 2) the powder coating having a particle-size distri- bution such that a) at least 90 percent by mass of the powder-coating particles have a size of between 1 and 120 µm, b) the maximum size of the powder-coating particles is <= 150 µm for at least 99 percent by mass of the particles, and c) the mean size of the powder-coating particles is between 1 and 60 µm, preferably from 1 to 30 µm.

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