| 摘要 |
HOE 90/F 079 of the disclosure: Process for the preparation of pigmented powder coatings The invention relates to a process for the preparation of pigmented crosslinkable powder coatings composed of a) the binder component, b) the hardener component, which can react with the binder component a) at elevated temperature, c) pigments and d) if appropriate customary powder coating additives, which comprises first dispersing component c) and if appropriate component d) in all or some of binder component a) or all or some of hardener component b) with the aid of dispersing machines employed in the preparation of solvent-containing coatings at a temperature above the melting range of component a) or b), and then mixing the dispersion with the remaining individual components in the customary manner, and extruding and grinding the mixture. The pigmented powder coatings obtainable by this process allow coatings of improved surface quality, in particular improved flow and reduced orange peel effect, to be obtained.
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