Isocryl EP-570STG

Isocryl® EP-570STG is a glycidyl-functional acrylic hardener designed to produce low gloss, exterior-durable polyester powder coatings. Benefits include consistent gloss, smooth matte appearance and stable performance. Standard and superdurable polyester resins used for TGIC or HAA powder coatings are well suited for use with Isocryl EP-570STG. A key advantage is improved burnish resistance over conventional matting hardeners. In addition, Isocryl EP-570STG has substantially improved compatibility with polyester/TGIC and epoxy resin based powder coatings.

Isocryl EP-570STG is designed to achieve <10 gloss in pigmented coatings with a variety of standard and super- durable 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-570STG at a 75:25 ratio with a second crosslinker such as HAA at 1% on total formulation. Resins with acid values below 30 are not recommended for use with Isocryl EP-570STG. HAA or TGIC 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-570STG are very stable to multiple extrusions indicating good process stability and have minimum gloss change with varying cure temperatures, film thickness variations or part mass. Part of Isocryl EP-570STG 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-570STG is a glycidyl-functional acrylic hardener designed to produce low gloss, exterior-durable polyester powder coatings. Benefits include consistent gloss, smooth matte appearance and stable performance. Standard and superdurable polyester resins used for TGIC or HAA powder coatings are well suited for use with Isocryl EP-570STG. A key advantage is improved burnish resistance over conventional matting hardeners. In addition, Isocryl EP-570STG has substantially improved compatibility with polyester/TGIC and epoxy resin based powder coatings.

Isocryl EP-570STG is designed to achieve <10 gloss in pigmented coatings with a variety of standard and super- durable 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-570STG at a 75:25 ratio with a second crosslinker such as HAA at 1% on total formulation. Resins with acid values below 30 are not recommended for use with Isocryl EP-570STG. HAA or TGIC 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-570STG are very stable to multiple extrusions indicating good process stability and have minimum gloss change with varying cure temperatures, film thickness variations or part mass. Part of Isocryl EP-570STG 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.