Patent ID: 6844392

Claim:
A composition for coating onto a surface to form into an abradable coating, comprising: a homogeneous dry composite powder composition suitable for powder coating an article, said composition formed of a first component, including at least an uncured thermoset resin having a cure temperature, said thermoset resin being selected from the group consisting of acrylic, polyester, epoxy, allyl, melamine formaldehyde, phenolic, polybutadiene, polycarbonate, polydicyclopentadiene, polyamide, polyurethane, and combinations thereof, in combination, with a second filler component, including at least 15 volume percent filler based on the volume of the resultant composite powder composition, wherein the filler is formed of an abradable material selected from the group consisting of metals, silicates, graphite, boron nitride, diamond, molybdenum disulfide, fluorides, clays, wood, ash, pigments, ceramics, polymers, silicon dioxide, titanium dioxide, gypsum, phosphorescent materials, cured resin systems, cured composite powder compositions, and mixtures thereof, which does not substantially melt at or below the cure temperature of the resin, whereby an abradable coating results employing the filler material homogeneously in each of the individual powder particles which makes the coating abradable so that mating surfaces coated with the dry powder composition will abrade against each other and exhibit minimized clearance.