Flexible PVC Products CPE 135A High Elongation Toughening Agent for Impact Strength Enhancement CAS 63231-66-3

RUNYE CPE 135A high elongation grade is a premium chlorinated polyethylene impact modifier purpose-designed for flexible and semi-rigid PVC applications where superior ductility and low-temperature flexibility are critical performance requirements. This specialized grade features an optimized molecular weight distribution and controlled chlorine content that delivers elongation at break exceeding 600% while maintaining sufficient tensile strength for load-bearing applications. The unique molecular architecture of CPE 135A enables it to function simultaneously as an impact modifier and a polymeric plasticizer, providing permanent flexibility without the migration and volatilization issues associated with liquid plasticizers such as phthalates. When incorporated into flexible PVC formulations at levels of 10-30 phr, CPE 135A forms a co-continuous elastomeric network that imparts rubber-like elasticity, excellent recovery after deformation, and sustained flexibility at temperatures as low as -30°C. The high elongation characteristic of CPE 135A also contributes to superior tear resistance and fatigue life in dynamically loaded applications. Our proprietary production process ensures exceptional lot-to-lot consistency in elongation and Mooney viscosity, giving compounders the process reliability needed for precision flexible PVC products.

• Exceptional Elongation Performance: Delivers elongation at break consistently exceeding 600%, providing flexible PVC products with outstanding stretchability, elastic recovery, and resistance to cracking under repeated flexural loading in demanding dynamic applications and installations.
• Permanent Low-Temperature Flexibility: The inherent elastomeric properties of CPE 135A remain effective down to -30°C without requiring additional low-temperature plasticizers, ensuring flexible PVC products maintain their pliability and impact resistance in cold storage, winter construction, and arctic service environments.
• Non-Migrating Polymeric Modifier: Unlike monomeric liquid plasticizers that can migrate to the surface over time causing embrittlement, staining, and environmental concerns, CPE 135A is permanently anchored within the PVC matrix as a high molecular weight polymer, providing lifelong flexibility without exudation.
• Superior Tear Strength: The elastomeric network formed by CPE 135A significantly improves tear resistance in flexible PVC products, preventing catastrophic tear propagation from nicks, cuts, or punctures that would otherwise compromise product integrity and service life.
• Oil and Chemical Resistance: The chlorine atoms in the CPE 135A polymer backbone contribute to enhanced resistance against oils, greases, aliphatic solvents, and mild chemicals, making it suitable for flexible PVC products used in industrial environments and automotive under-hood applications.
• Excellent Filler Tolerance: CPE 135A modified flexible PVC compounds accept high loadings of calcium carbonate and other mineral fillers without significant loss of elongation or flexibility, allowing compounders to optimize formulation costs while maintaining required mechanical performance levels.
• Reduced Plasticizer Volatility: Blending CPE 135A with traditional plasticizers can reduce overall volatile organic compound (VOC) emissions from flexible PVC products, helping manufacturers meet increasingly stringent indoor air quality and automotive interior emissions standards.

RUNYE CPE 135A high elongation grade is ideal for flexible PVC products including hoses and tubing, wire and cable jacketing, sealing gaskets and profiles, flexible membranes and geomembranes, automotive interior skins and trim, inflatable structures, conveyor belting, and industrial sheeting. It is particularly valuable in applications where phthalate-free flexibility is desired for compliance with REACH, RoHS, and similar regulations restricting certain plasticizers. CPE 135A can be used as a primary modifier for fully flexible compounds or in combination with conventional plasticizers at reduced levels to achieve semi-rigid products with controlled flexibility and improved long-term aging characteristics. The material processes easily on standard PVC compounding and extrusion equipment with no special handling requirements beyond standard powder handling practices for chlorinated polymers.

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.