POWDER COATING COMPOSITION FOR METAL DEPOSITION

摘要

A powder coating composition for coating substrates providing enhanced smoothness of the coatings suitable for vapor metal deposition, the composition comprising an intimate mixture comprising A) 50 to 99 wt% of at least one resin binder selected from the group consisting of polyester resins, epoxy resins, urethane resins, (meth)acrylic resins, silicone resins, fluorocarbon resins, phenolic resins 8) O to 95 wt% of at feast one cross-linking agent, C) 0.1 to 10 wt% of at least one opacifying agent, and D) 0.01 to 20 wt% of at least one coating additive, pigment and/or extender (filler), the wt% are based on the total weight of the powder coating composition; wherein the powder coating composition on curing forms a surface having excellent smoothness suitable for vapor metal deposition and provides a DOI smoothness measurement by an easy and an exacting working procedure.