PVC Additives

PVC is inherently thermally unstable and requires a carefully balanced additive package to be processable and durable. Additives delivered via masterbatch format ensure precise, homogeneous incorporation into PVC compounds, improving processing efficiency, end-product performance, and regulatory compliance.

the most critical PVC additive class, preventing dehydrochlorination and discoloration during processing.

control melt flow and prevent polymer adhesion to metal surfaces. Internal lubricants (fatty acid esters) reduce intermolecular friction; external lubricants (paraffin waxes, PE waxes) minimize metal-surface adhesion during extrusion and calendering.

CPE (chlorinated polyethylene), MBS, and acrylic-based modifiers improve low-temperature toughness and impact resistance in rigid PVC profiles and pipes.

acrylic copolymers accelerate PVC gelation, improving melt homogeneity, surface quality, and output rates on twin-screw extruders and calenders.

calcium carbonate (coated or uncoated) reduces cost, improves stiffness, and enhances surface finish. Delivered via masterbatch for dust-free, accurate dosing.

HALS, benzophenones, and phosphite antioxidants protect outdoor PVC applications (window profiles, cladding) against weathering and oxidative degradation.

ATH, antimony trioxide synergists, and phosphorus-based systems meet fire safety standards for cables, flooring, and construction applications.

Additive masterbatches eliminate handling hazards of dusty or liquid raw materials, ensure consistent letdown ratios, simplify quality control, and significantly reduce formulation complexity at the compounding stage — benefiting both large industrial processors and smaller converters equally.