| 摘要 |
The present invention concerns a powder coating based on epoxy resins and phenolic hardeners, in particular for the internal coating of packing containers, and containing: 1) at least one epoxy resin with an epoxideequivalent weight of between 300 and 5500; and at least one hardener with more than one phenolic hydroxyl group per molecule and a hydroxyl-equivalent weight, relative to phenolic OH groups, of between 100 and 500; the powder coating having a grain size distribution such that: a) at least 90 mass % of the powder coating particles have a particle size of between 1 and 60 .mu.m; b) the maximum particle size of the powder coating particles for at least 99 mass % of the particles is <= 100 .mu.m; c) the average particle size of the powder coating particles is between 5 and 20 .mu.m; and d) the slope of the grain distribution curve at the inflection point is >= 100; and 2) a lubricant, preferably in an amount of <= 2 wt.%.
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