Methacrylate monomers for Plastics
Processing aids (PAs) based on acrylic copolymers have long been known in the PVC industry to control polymer fusion and melt rheology, increase melt elasticity and, in some cases, improve metal release. As a consequence of their high compatibility with PVC and high molecular weight, they mesh with PVC for improved melt properties.
Most commercial processing aids are copolymers of VISIOMER® MMA and VISIOMER® n-BMA, with MMA as the major component. Their efficiency is controlled by adjusting molecular weight and glass transition temperature. PAs are used mainly for PVC building applications, such as window frames, panels, siding, fences, sign boards, roofing sheets, pipes, fittings, injection-molded parts and foamed products.