Isocryl EP-590

Isocryl® EP-590 is a glycidyl-functional acrylic hardener designed to produce low gloss, exterior-durable polyester powder coatings. Benefits include consistent gloss, smooth matte appearance and dependable performance. Standard and superdurable polyester resins used for TGIC or HAA powder coatings are well suited for use with Isocryl EP-590. A key advantage is its improved burnish resistance compared to conventional matting hardeners. In addition, Isocryl EP-590 has substantially improved compatibility with polyester/TGIC and epoxy resin-based powder coatings.

Isocryl EP-590 is designed to achieve matte pigmented coatings (<10 gloss at 60) with a variety of standard and superdurable resins in a single extrusion system. Best results for chemical and mechanical properties are achieved by formulating a polyester resin with acid value 35 and Isocryl EP-590 at a 75:25 ratio with a second crosslinker such as HAA at 1% on total formulation. Resins with acid value below 30 are not recommended for use with Isocryl EP-590. TGIC or HAA are also suitable as a second crosslinker. It is not recommended to use the secondary crosslinker at a level higher than 1.3% due to uncontrolled gloss variation during processing and application. Formulations with Isocryl EP-590 are very stable to multiple extrusions indicating good process stability and have minimum gloss change with different cure temperatures, film thickness variations or part mass. Part of Isocryl EP-590 can be replaced with Isocryl EP-575G to optimize mechanical and chemical properties.

It is recommended that formulated powders be tested for physical and chemical advancement when stored at elevated temperatures. Recommended storage temperature is below 40°C

Isocryl® EP-590 is a glycidyl-functional acrylic hardener designed to produce low gloss, exterior-durable polyester powder coatings. Benefits include consistent gloss, smooth matte appearance and dependable performance. Standard and superdurable polyester resins used for TGIC or HAA powder coatings are well suited for use with Isocryl EP-590. A key advantage is its improved burnish resistance compared to conventional matting hardeners. In addition, Isocryl EP-590 has substantially improved compatibility with polyester/TGIC and epoxy resin-based powder coatings.

Isocryl EP-590 is designed to achieve matte pigmented coatings (<10 gloss at 60) with a variety of standard and superdurable resins in a single extrusion system. Best results for chemical and mechanical properties are achieved by formulating a polyester resin with acid value 35 and Isocryl EP-590 at a 75:25 ratio with a second crosslinker such as HAA at 1% on total formulation. Resins with acid value below 30 are not recommended for use with Isocryl EP-590. TGIC or HAA are also suitable as a second crosslinker. It is not recommended to use the secondary crosslinker at a level higher than 1.3% due to uncontrolled gloss variation during processing and application. Formulations with Isocryl EP-590 are very stable to multiple extrusions indicating good process stability and have minimum gloss change with different cure temperatures, film thickness variations or part mass. Part of Isocryl EP-590 can be replaced with Isocryl EP-575G to optimize mechanical and chemical properties.

It is recommended that formulated powders be tested for physical and chemical advancement when stored at elevated temperatures. Recommended storage temperature is below 40°C