Resin

CPE-135A Chlorinated Polyethylene Resin – Premium PVC Processing Aid & Impact Modifier

1. Introduction

CPE-135A, short for Chlorinated Polyethylene 135A, is a saturated thermoplastic resin manufactured via chlorination of high-density polyethylene (HDPE). It functions as both a professional PVC processing aid and high-efficiency impact modifier for rigid PVC manufacturing, the most widely adopted CPE grade in global plastic compounding. With a standard chlorine content of 35±2%, our CPE-135A white powder delivers balanced melt flow performance, low-temperature toughness and outstanding compatibility with PVC resin, stabilizers and inorganic fillers. During PVC extrusion and injection molding, this processing aid optimizes fusion speed, eliminates melt fracture, smooths product surface and reduces production scrap rate. As a reliable Chinese CPE-135A manufacturer and bulk supplier, we supply consistent quality resin complying with RoHS standards, full test COA, flexible bulk order support and competitive factory prices for plastic processors worldwide.

2. Complete Technical Specifications

3. Key Features & Advantages as PVC Processing Aid

Our industrial CPE-135A resin combines dual advantages of processing lubrication and impact toughening, solving multiple common pain points in rigid PVC production:
Optimized PVC processing fluidity: This PVC processing aid lowers melt viscosity, accelerates uniform PVC particle fusion, allows faster extrusion speed and cuts power consumption during production. It effectively removes surface melt fracture, stripes and blemishes on extruded PVC finished goods.
Superior low-temperature impact resistance: CPE-135A forms a stable three-dimensional network inside rigid PVC, preventing cracking under cold environments down to -20°C, critical for outdoor PVC products like window profiles and drainage pipes.
Excellent filler compatibility: Supports high loading of calcium carbonate and talc without losing mechanical performance, helping manufacturers lower raw material costs.
Long-term weather & aging resistance: Resists UV radiation, ozone and acid-alkali corrosion, extending service life of outdoor PVC products without yellowing or embrittlement.
Wide formula synergy: Matches perfectly with all common PVC heat stabilizers, internal/external lubricants and other plastic additives, no compatibility conflicts in standard rigid PVC formulas.
Stable batch consistency: Strict DSC and mechanical testing per lot, low impurity particles, no agglomeration during storage for steady mass production.

4. Main Industrial Applications of CPE-135A

4.1 Rigid PVC Window & Door Profiles
CPE-135A is the standard processing aid and impact modifier for PVC building profiles. It improves extrusion smoothness, enhances anti-shock performance for window frames and door casings, and guarantees long-term outdoor weather resistance. Typical dosage: 8–12 phr.
4.2 PVC Pipes & Pipe Fittings
For water supply pipes, drainage tubes, conduit and CPVC pipe fittings, CPE-135A optimizes melt uniformity for consistent wall thickness while boosting anti-crack performance under cold water transport. Typical dosage: 6–10 phr.
4.3 PVC Sheets, Wall Panels & Foam Boards
As core processing additive for PVC ceiling panels, decorative wall cladding and rigid foam sheets, it delivers glossy smooth surfaces, reduces foam cell defects and strengthens sheet flexibility during cold bending. Typical dosage: 8–14 phr.
4.4 Other Plastic Modification Scenarios
WPC wood-plastic composite boards: Improves PVC matrix flow and interface bonding with wood flour
Injection molded rigid PVC parts: Eliminates injection marks and product brittleness
Secondary toughening modifier for ABS, PP and CPVC plastics beyond PVC production

5. Packaging, Storage & Shipping Guidelines

Standard Packaging
25kg woven bag with inner PE liner; ton jumbo bag available for large bulk orders. Custom packaging labels can be printed as customer requirements.
Storage Conditions
Store CPE-135A powder in cool, dry, ventilated warehouse under temperature below 40°C. Keep bags tightly sealed, avoid direct sunlight, rain and high humidity to prevent caking. Separate from strong oxidants during storage.
Shipping & Trade Service
Classified as non-hazardous goods for sea and land transport. We support FOB, CFR, CIF international trade terms. Complete documents including COA, technical data sheet, packing list and commercial invoice will be supplied for global customs clearance. Stable stock ensures fast delivery within 7–10 working days after deposit.

6. FAQ

Q1: What is CPE-135A used for in PVC production?
A: CPE-135A chlorinated polyethylene acts as dual-function PVC processing aid and impact modifier. It improves PVC melt flowability for easier extrusion/injection molding, meanwhile greatly enhances low-temperature impact toughness, weather resistance and surface quality of all rigid PVC finished products such as profiles, pipes and sheets.
Q2: What is the recommended dosage of CPE-135A in rigid PVC formulas?
A: Dosage varies by product type: 6–10 phr for PVC pipes, 8–12 phr for window profiles, 8–14 phr for PVC sheets and wall panels, 14–18 phr for high-impact cold-resistant PVC products. Over-dosage may reduce PVC rigidity and raise raw material cost.
Q3: What makes CPE-135A different from other PVC processing aids?
A: Most single-function processing aids only improve melt flow, while CPE-135A combines processing lubrication and permanent impact toughening in one resin additive. It provides long-term outdoor weatherability that pure acrylic processing aids cannot match, making it the top choice for construction PVC goods exposed to sunlight and low temperature.
Q4: Is your CPE-135A compliant with global environmental standards?
A: Our CPE-135A resin meets RoHS environmental requirements with zero heavy metal content. Each shipment comes with official COA and material safety report, satisfying import inspection standards for EU, Southeast Asia, Middle East and American plastic manufacturers.
Q5: Can you provide free lab samples of CPE-135A? Do you offer bulk discount?
A: Yes, we supply small free test samples for factory formula trial verification. Competitive wholesale discounts are available for bulk orders and long-term cooperative plastic compounding factories. Our technical team can also provide customized PVC formula optimization guidance.
Q6: How long is the shelf life of CPE-135A?
A: Under properly sealed dry storage conditions, the shelf life of CPE-135A powder reaches 24 months. Products stored over 2 years can still be used normally after passing standard mechanical performance retesting.