Akcrostab ABC-18 Akzo Nobel-Akcros Chemicals North America South and Central America Heat stabilizer Vinyl Architectural / Decorative >> Flooring Akrostab ABC-18 is stabiliser activators for PVC foam. While ABC-18 activates over the same temperature range as ABC-1, it has a slightly lower activity rate, allowing the processor more latitude in his processing conditions. Therefore both products should be evaluated in any formulation designed to expand at stock temperatures of 340 - 360ïF. In addition to uses listed under those of ABC-1, ABC-18 is considered safe for use in the processing of food contact plastic articles according to the provisions of 21 CFR 177.1210 (by reference to 175.300) for manufacture of closures with sealing gaskets for food containers. The best quality foam is produced when the fusion temperature of the plastisol is matched with the decomposition temperature of the blowing agent.Fusion temperature of the finished plastisol formulation can be determined by the use of a graded gel block, torque rheometer, or several other methods.Blowing rate is primarily a function of the particle size of the blowing agent. However, the stabilizer-activator can be used to assist in the control of the decomposition rate of the blowing agent and of the cell size of the finished foam. . stabiliser activators for PVC foam,the best quality foam is produced when the fusion temperature of the plastisol is matched with the decomposition temperature of the blowing agent.lower activity rate, allowing the processor more latitude in his processing conditions.