| 摘要 |
<p>The present invention relates to a powder coating, in particular for internal coating of packaging containers, which is characterized in that it 1.) comprises at least one epoxy resin having an epoxide equivalent weight of from 300 to 5500 and at least one hardener having more than one phenolic hydroxyl group per molecule and a hydroxyl equivalent weight, based on the phenolic OH groups, of from 100 to 500, and 2.) has a particle size distribution such that at least 90 percent by weight of the powder coating particles have a particle size of between 1 and 60 .mu.m, the maximum particle size of the powder coating particles is ~ 100 .mu.m, the mean particle size of the powder coating particles is between 5 and 20 .mu.m and the gradient of the particle distribution curve at the point of inflexion is ~ 100.</p> |
