Reichhold Inc. (Research Triangle Park, N.C.) unveiled styrene-free ADVALITE at JEC Europe 2014. Technically a vinyl “hybrid,” it offers no-VOC performance without the use of reactive diluents, which effectively eliminates the “ester” label. The products include ADVALITE vinyl hybrid liquid and ADVALITE vinyl hybrid hot-melt prepreg resins. Reportedly, both exhibit good mechanical properties and temperature resistance up to 200ºC/392°F. The resins are cured using standard free-radical inhibitors and initiators. This is said to allow significant processing advantages when compared to epoxy resins. The low exotherm of the resins allows for rapid curing of thick laminates without cracking. ADVALITE liquid resins can be used in resin transfer molding (RTM), infusion, filament winding, liquid molding and pultrusion processes. The ADVALITE hot-melt prepreg resins can be directly coated or applied as an adhesive film for fiber impregnation. Reichhold says the materials have 3.5 to 4 percent elongation on some parts.