Coating composition and method for producing powder coating

A process for the production of a scratch resistant powder coating, comprising the steps of:

• a) applying a transparent clear coat or a pigmented top coat directly onto a substrate surface or onto a prior coating, and
• b) curing the clear coat or the top coat applied in step a)
• wherein the transparent clear coat or the pigmented top coat comprises a powder coating composition comprising:
• A) about 30 to about 90 wt % of a glycidyl-functionalised (meth)acrylic resin as a film-forming binder,
• B) about 30 to about 90 wt % of a cross-linking agent (hardener) for the binder,
• C) about 0.01 to about 20 wt % of particles chosen from the group comprising aluminium oxide Al2O3 and aluminium hydroxide Al(OH)3 particles having an average particles size in the range of about 0.1 to about 10 μm, and
• D) about 0.05 to about 50 wt % of a coating additive, and optionally, a pigment and/or a filler,
• the wt % based on the total weight of the powder coating composition.