Chemical/Physical Nature

Atlac® 580 ACT is a high grade Bisphenol A Urethane Vinylester, dissolved in styrene. The resin is pre-accelerated and thixotropic. Atlac® 580 ACT features medium viscosity and medium reactivity.

Major Applications

Atlac® 580 ACT is specially developed to meet the requirements of hand lay-up and spray-up applications. The resin is recommended for the fabrication of chemical resistant equipment and marine applications.

Principal Properties

Atlac® 580 ACT has excellent wet out and de-aerating properties for easy processing. Compared to conventional Vinylester resins foaming after MEK peroxide addition is highly reduced in Atlac® 580 ACT leading to less air inhibition inside the laminate and on the surface. Due to its urethane incorporation, Atlac® 580 ACT features enhanced thixotropic behavior preventing rinse off inclined mold surfaces and shows an improved compatibility with aramid fiber reinforcements. Atlac® 580 ACT provides low exothermic reaction during cure allowing thick sections to be fabricated in one go, however through cure in thin laminates is favored by excellent curing behavior. Final products made with Atlac® 580 ACT show excellent hydrolysis resistance and good thermal stability. Atlac® 580 ACT is resistant to many aqueous media, acidic salts, alkaline media and hot water. The resin offers an outstanding combination of heat resistance and flexibility.

Approvals

Cured non-reinforced Atlac® 580 ACT conforms to type 1310 according to DIN 16946/2. According to EN13121/1 Atlac® 580 ACT is classified group 7B. The resin is certified by Lloyd’s Register and Registro Navale Italiano (R.I.Na.) as laminating resin for use in Marine applications.