CPE 135A Chlorinated Polyethylene Rubber PVC Compound Toughening Good Compatibility CAS 63231-66-3

RUNYE CPE 135A chlorinated polyethylene rubber grade is a versatile thermoplastic elastomer modifier designed for PVC compound toughening applications where excellent compatibility, good flexibility, and broad polymer blending capability are required. This grade exploits the unique dual character of CPE 135A: it functions as an effective impact modifier in rigid PVC formulations while also providing elastic character similar to synthetic rubber for semi-rigid and flexible compounds. The 35% chlorine content of CPE 135A creates a solubility parameter that closely matches PVC, ensuring molecular-level compatibility that is superior to most other elastomeric modifiers. This excellent compatibility translates to efficient impact modification at lower loadings and reduced tendency for phase separation during processing or service. In addition to its role as a PVC impact modifier, CPE 135A demonstrates good compatibility with a wide range of other polymers including PE, PP, ABS, SAN, and various synthetic rubbers, making it a valuable compatibilizer for polymer blends and recycled mixed-plastic streams. The crystalline elastomer nature of CPE 135A contributes to a unique combination of rubber-like elasticity with some thermoplastic character, allowing for interesting property development in specialty compounds. Our manufacturing process uses a controlled chlorination technology that ensures uniform chlorine distribution and minimal residual crystallinity, resulting in consistent product performance that compounders and product developers can depend on for demanding technical applications.

• Excellent PVC Compatibility: The solubility parameter of CPE 135A is closely matched to PVC resin, providing near-molecular-level compatibility that ensures efficient impact modification, uniform dispersion, and strong interfacial adhesion without phase separation during processing or long-term aging.
• Multi-Polymer Compatibilizer: CPE 135A serves as an effective compatibilizing agent in PVC/PE, PVC/PP, PVC/ABS, and PVC/rubber blends, as well as in mixed recycled plastic streams, improving mechanical properties and surface quality of otherwise incompatible polymer combinations.
• Crystalline Elastomer Character: The controlled residual crystallinity of CPE 135A provides a unique combination of elastomeric flexibility with structural integrity, enabling the design of compounds with tailored stiffness-elasticity profiles for specialized applications requiring both toughness and dimensional stability.
• Broad Processing Versatility: CPE 135A processes well across a wide range of PVC processing methods including extrusion, injection molding, calendering, compression molding, and blow molding, providing compounders with formulation flexibility for diverse product manufacturing operations.
• Filler Loading Capability: The excellent compatibility and wetting characteristics of CPE 135A allow for high filler loadings in PVC compounds without catastrophic loss of mechanical properties, enabling cost optimization through increased calcium carbonate or other mineral filler content while maintaining adequate performance.
• Good Rubber Compatibility: CPE 135A can be blended with natural rubber, SBR, NBR, EPDM, and other synthetic rubbers to create specialty elastomer compounds with balanced properties, useful for applications requiring a combination of oil resistance, weatherability, and cost-effectiveness.
• Recycled Content Acceptance: PVC compounds containing CPE 135A accept post-industrial and post-consumer recycled PVC content with less property degradation compared to non-modified compounds, supporting sustainability goals and circular economy initiatives in PVC product manufacturing.

RUNYE CPE 135A rubber grade is used in a diverse range of PVC compound applications including footwear soles and components, hose and tubing compounds, sealing gaskets and weather strips, flexible and semi-rigid profile extrusions, co-extruded gaskets in rigid profiles, polymer alloy and blend development, recycled plastic upgrading, and specialty molded rubber goods. It is also used as a property modifier in non-PVC polymer systems including polyethylene film toughness enhancement, polypropylene low-temperature impact improvement, ABS weatherability upgrade, and rubber compound property extension. The product is typically incorporated through melt compounding in internal mixers, twin-screw extruders, or two-roll mills, and is compatible with standard PVC and rubber compounding additives across all common stabilizer and plasticizer systems.

Our CPE 135A is packaged in 25kg woven bags with inner PE liner to prevent moisture absorption during storage and transportation. Bulk packaging options include 500kg jumbo bags and 1000kg palletized loads available upon request. Every production batch is rigorously tested in our in-house laboratory for chlorine content, tensile strength, elongation, thermal stability, and particle size distribution before release. We maintain complete batch traceability records and provide certificates of analysis (COA) with every shipment. Our factory operates under an ISO 9001:2015 certified quality management system, with raw material inspection, in-process control, and final product testing at every stage. Samples are retained for 12 months for quality traceability. We offer free samples for customer evaluation and technical support for formulation optimization to ensure maximum performance in your specific application.