Oxidized Polyethylene Wax is polar modified low‑molecular‑weight polyethylene wax developed as direct drop‑in replacement for A‑C 629A. Polar functional groups enhance compatibility with filled EPDM rubber formulations. During internal mixing and extrusion of rubber profiles, it reduces compound viscosity, decreases friction between rubber melt and metal equipment surfaces. It improves extrusion flow behavior, prevents sticking to extruder screws and dies, and delivers smoother finished rubber p

Product Detail

Product Overview

Oxidized Polyethylene Wax (CAS 68441‑17‑8, A‑C 629A Equivalent) is low‑molecular‑weight oxidized polyethylene wax designed for rubber processing applications. Its moderate polar structure offers balanced compatibility with non‑polar rubber elastomers and inorganic mineral fillers. When added during banbury mixing, the wax distributes uniformly within the rubber compound. It reduces internal friction of the rubber melt and provides effective external release lubrication at the metal‑rubber interface during extrusion. It lowers extrusion pressure, improves extrudate surface smoothness, reduces surface defects such as tearing and shark‑skin on continuous extruded EPDM profiles. This product acts as a cost‑effective imported substitute for A‑C 629A for rubber compounding and profile manufacturers.

Key Features

Functional equivalent to A‑C 629A for imported grade substitution
Moderate polar molecular structure, good wetting and dispersion for mineral‑filled rubber compounds
Dual internal‑external lubrication for EPDM during mixing and extrusion
Reduces extrusion pressure and screw load, improving rubber extrusion flow
Minimizes shark‑skin and surface tearing defects on extruded rubber profiles
Effective release property to avoid rubber sticking on die and extruder components
Exhibits good thermal stability under conventional rubber mixing and extrusion temperatures

Technical Specification

Chemical Name: Oxidized Polyethylene Wax
CAS Number: 68441‑17‑8
Appearance: Off‑white hard pellets
Melting Point: 109‑117℃
Acid Value: 16‑26 mgKOH/g
Equivalent Grade: A‑C 629A

Application Fields

Filled EPDM extruded rubber profiles for automotive and construction sealing
EPDM and other synthetic rubber compounds with high mineral filler loading
Rubber hose and weather‑strip extrusion formulations
General synthetic rubber systems requiring processing lubricant and release additive

Usage Recommendation

Typical dosage ranges from 0.6‑3.2 % calculated on total rubber compound weight. Feed the wax together with elastomer, fillers and other rubber chemicals during banbury internal mixing stage. Avoid excessive loading which may negatively impact rubber vulcanization and final physical properties. It is strongly recommended to carry out lab mixing and extrusion trials before formal mass‑scale production.

Storage & Handling

Store sealed sacks in dry and well‑ventilated warehouse. Keep away from direct sunlight and high‑temperature heat sources. Prevent moisture absorption. Reseal sacks promptly after partial discharging.

Safety Notice

This oxidized polyethylene wax is intended exclusively for industrial rubber compounding, not for food or cosmetic applications. Wear protective gloves and safety goggles during material handling. Please refer to the corresponding MSDS for complete safety operation instructions.

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Oxidized Polyethylene Wax CAS 68441-17-8 EPDM Rubber Profile Processing Lubricant (A-C 629A Equivalent)

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.