HMEL PPCP Polysure CM40NR

Polysure CM40NR is a reactor-grade nucleated polypropylene impact copolymer (PPCP) developed by HPCL-Mittal Energy Limited (HMEL) using Spheripol-II technology. With a melt flow index of 40 g/10 min, CM40NR is engineered for thin-wall injection moulding (TWIM), appliances, houseware, and compounding. Its nucleation ensures low warpage, enhanced dimensional stability, and shorter cycle times, directly supporting energy efficiency and sustainability. CM40NR is supplied as natural/white granules in 25 kg woven sacks and is fully compliant with IS 10910 for food, pharma, and drinking water contact, making it a versatile solution for B2B converters across India.

Functional Features

Polysure CM40NR stands out for its reactor-grade consistency, high-flow processability, and nucleated structure. The grade delivers a well-balanced stiffness-impact profile, supporting the production of rigid, durable parts with minimal warpage. Its fast crystallisation reduces cooling times and energy consumption, while the Spheripol-II process ensures batch-to-batch uniformity. CM40NR’s compliance with Indian and international food-contact standards makes it suitable for regulated applications.

Detailed Technical Specifications (Typical Values)

• Melt Flow Index: 40 g/10 min (ASTM D1238)
• Tensile Strength at Yield: 28 MPa (ASTM D638)
• Tensile Elongation at Yield: 5% (ASTM D638)
• Flexural Modulus (1% secant): 1500 MPa (ASTM D790A)
• Notched Izod Impact (23°C): 65 J/m (ASTM D256A)
• Vicat Softening Point (10N): 150°C (ASTM D1525)
• HDT (0.455 MPa): 96°C (ASTM D648)
• Density: ~0.90 g/cm³

Processing Recommendations:

Injection moulding window: 190–230°C. For thin-wall parts, use mid-range melt temps and balanced injection/holding pressures. Store granules dry, below 50°C, and away from sunlight.

Applications and Industry Use Cases

Thin Wall Injection Moulding (TWIM) Containers and Housewares

CM40NR’s high flow and nucleated structure make it ideal for TWIM containers, buckets, storage bins, and household organizers. Its low warpage ensures that lids fit perfectly and stacked products remain stable, while its rigidity supports handle and hinge design for utility products.

Appliance and White-Goods Components

Widely used for air cooler/AC louvers, grills, fan covers, and washing machine internals, CM40NR’s stiffness and dimensional stability support complex geometries and snap-fit assemblies. Its heat resistance and defect-free surface finish are valuable for appliance housings and panels.

Compounding and Masterbatch Base Resin

CM40NR serves as a robust base for mineral-filled PP compounds and colour masterbatches. Its reactor-grade consistency and moderate MFI support efficient dispersion and processing, enabling custom PPCP blends for furniture, appliances, and automotive interiors.

Performance Advantages of Polysure CM40NR

Compared to generic, non-nucleated PPCP grades of similar MFI, CM40NR offers lower warpage, faster cycle times, and superior dimensional stability. The grade’s Spheripol-II reactor technology ensures uniform mechanical properties, while nucleation reduces cooling time and energy per part. CM40NR is positioned between Polysure CM25NR and CM65NR, offering a unique balance of flow and mechanical performance for mid-thickness thin-wall parts and compounding.

Compliance, Packaging and Storage

Food Contact Compliance:

Certified to IS 10910 for food/pharma/water contact. Converter must validate final article for migration and use-case-specific compliance.

Packaging:

Supplied as natural/white PP granules in 25 kg woven sacks.

Storage Guidelines:

Store in a dry, dust-free area below 50°C, avoid direct sunlight and heat to prevent quality deterioration.