Polyolefin waxes
Polyethylene Waxes in PVC Compounds
Polyolefin waxes, primarily polyethylene waxes, are important processing lubricants in PVC applications. They reduce friction and melt viscosity, help stabilise the extrusion process, prevent material sticking to metal surfaces of equipment, and improve the surface appearance of finished products.
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Such additives are particularly widely used in the production of PVC profiles, pipes, panels, sheets, and other rigid compounds where it is necessary to ensure stable plasticisation, good surface quality, and high line productivity. Polyethylene waxes are also a key base component in the production of colour masterbatches and concentrates.
Polyethylene waxes are generally divided into two main groups: non-oxidised and oxidised grades. They differ in chemical nature, compatibility with PVC, and functional performance within the formulation.
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