OPE wax used as lubricant in polymer processing

Oxidized polyethylene wax is a low-molecular-weight polymer containing polar
carbonyl and hydroxyl groups. Its core function in polymer processing is to
simultaneously provide internal and external lubrication, disperse pigments
and fillers, and serve as a coupling modifier, significantly improving the
plasticization efficiency and surface quality of polar systems.‌‌
‌Dual Lubrication‌: Polar groups provide strong‌ internal lubrication‌, while the
long-chain alkane structure provides‌ external lubrication;
‌High Dispersion and Coupling‌: Polar functional groups adsorb onto
filler/pigment particles, preventing agglomeration, enhancing dispersion
uniformity, and improving interfacial bonding strength;
‌Thermal Stability Synergy‌: Some acidic groups help absorb HCl generated
during degradation, extending the thermal stability of PVC and reducing
efflorescence and blooming.‌‌