Disparlon PL-540 Blend of vinyl polymer and castor oil derivative King Industries Flow / Levelling agent Coatings >> Powder Coatings Powder coating DISPARLON® LEVELING AGENTS PL-Series: Powder coatings All products offer: Superior flow and leveling Good recoatability Vinyl Polymer and Caster Oil Derivative Thermoset Powder Coatings. Mixture of vinyl polymer and castor oil derivative. Used as a leveling agent for thermoset powder coatings. Provides superior flow and leveling and good recoatability. <br> Use level: 0.5-3%.