In the polymer industry, PVC plastics are presented in a fairly large assortment. These are insulating cable plasticates, pipe compositions, hoses and profiles, siding and panels, etc. Almost all PVC plasticates are produced using polyethylene wax. Oxidized polyethylene wax is used as an internal lubricant as it combines well with the PVC matrix. As an external lubricant, non-oxidized polyethylene wax is used. Its main purpose is to reduce shear loads during extrusion both on the outer layer and inside the composite. Reduced adhesion of PVC-metal can provide polyethylene wax even with low viscosity, but due to poor compatibility with the base, it is squeezed out to the surface, which worsens the mechanical and surface characteristics of the products. Waxes with a higher viscosity (200 MPa * s and higher), in addition to the outer surface, plasticize the inner layers of the plastic and thereby contribute to a more uniform distribution of the ingredients in the mass. In PVC plasticates, waxes with a drop-drop temperature above 1100C are most often used. The use of waxes with these drop-off temperatures contributes to an increase in the softening temperature of the plastic (example of application patents RF-2402084, RF-2402085, RF-2212421).
