BARCELONA, Spain—Concentrol S.A. recently presented new silicone surfactants for use as stabilizers in rigid polyurethane foam.
Concentrol said these surfactants provide high stabilizing capacity and excellent regulation of cell size, and may be used with different blowing agents, from water-based formulations to formulations containing additional blowing agents such as pentane and its isomers, or volatile liquids such as HCFC and HFCs.