LOTTE KOPELEN JM-350
Advanced Polypropylene Impact Copolymer
Engineered for Excellence
LOTTE KOPELEN JM-350 is an advanced thermoplastic material engineered for demanding applications requiring a superior combination of mechanical properties. Developed by LOTTE Chemical Corporation, this high-performance polymer represents a breakthrough in achieving the optimal balance between stiffness and impact resistance.
Exceptional Impact Strength
Superior ability to absorb energy and resist fracture, even at low temperatures
Excellent Stiffness
High flexural modulus ensures parts maintain structural integrity
Perfect Balance
Optimal combination of toughness and rigidity for versatile applications
Material Classification & Identity
Chemical Identity
- Classification: Polypropylene Impact Copolymer (PPCP)
- Chemical Name: Ethylene-Propylene Copolymer
- CAS Number: 9010-79-1
- Composition: ≥99% Ethylene-Propylene Copolymer
- Additives: <1% Proprietary Stabilizers
Key Features
- Higher Ethylene Content: Enhanced rubbery phase formation
- Semi-crystalline Structure: Optimal balance of properties
- Manufacturer: LOTTE Chemical Corporation
- Primary Process: Injection Molding
- Form: Translucent pellets
Technical Properties & Performance
Physical Properties
Mechanical Properties
| Property | Test Method | Value | Units | SI Units |
|---|---|---|---|---|
| Tensile Stress at Yield | ASTM D638 | 270 | kgf/cm² | 26.5 MPa |
| Tensile Strain at Break | ASTM D638 | >100 | % | >100% |
| Flexural Modulus | ASTM D790 | 13,000 | kgf/cm² | 1275 MPa |
| Notched Izod Impact (23°C) | ASTM D256 | 8.5 | kgf·cm/cm | 83 J/m |
| Notched Izod Impact (-10°C) | ASTM D256 | 4.0 | kgf·cm/cm | 39 J/m |
Impact Performance vs Temperature
Thermal & Electrical Properties
Thermal Properties
- Heat Deflection Temperature: 105°C (ASTM D648)
- Melting Point: 150-170°C
- UL RTI (Continuous Use): 65°C
- Processing Temperature: 225-250°C
Safety Properties
- Flammability Rating: UL 94 HB
- NFPA Health: 1 (Slight hazard)
- NFPA Flammability: 1 (Slight hazard)
- NFPA Reactivity: 0 (Stable)
Injection Molding Processing Guide
Temperature Settings
| Parameter | Range | Start Point |
|---|---|---|
| Melt Temperature | 220-280°C | 235°C |
| Mold Temperature | 20-80°C | 50°C |
| Rear Zone | 190-210°C | 200°C |
| Nozzle | 230-250°C | 240°C |
Process Parameters
| Parameter | Value | Notes |
|---|---|---|
| Injection Speed | 80-100 mm/s | Fast preferred |
| Hold Pressure | 50-75% of injection | Prevent sink marks |
| Back Pressure | 0.5 MPa | Melt homogeneity |
| Drying | Not required | If stored properly |
Design Guidelines
Wall Thickness
Recommended range: 0.635-3.81mm. Maintain uniform thickness to prevent warpage.
Draft Angles
Minimum 1° for smooth surfaces, 2-5° for textured surfaces.
Radii & Fillets
Internal radii should be 25-75% of wall thickness for stress distribution.
Target Applications & Industry Use Cases
Automotive Components
- • Battery cases and housings
- • Automotive compounds base resin
- • Under-hood components
- • Interior trim parts
Excellent low-temperature impact resistance crucial for cold-weather performance and safety.
Home Appliances
- • Vacuum cleaner housings
- • Coffee maker components
- • Electronic device cases
- • Control panel housings
Balance of stiffness and impact resistance ensures long-term durability and aesthetic appeal.
Industrial Goods
- • Storage crates and pallets
- • Toolboxes and containers
- • Toys and household items
- • Food contact applications
Cost-effective solution for high-volume production with excellent durability and safety compliance.
Regulatory Compliance & Standards
Food Contact Regulations
US food contact compliance
European food contact framework
Bisphenol-A free formulation
Environmental & Safety
Restriction of Hazardous Substances
Electronic waste compliance
Children's toy safety standards
Health, Safety & Environmental Profile
Hazard Classification
- GHS Classification: Not hazardous in solid form
- NFPA 704 Rating: Health 1, Flammability 1, Reactivity 0
- Primary Hazards: Thermal burns from molten material
- Vapor Concern: Avoid breathing processing fumes
Safe Handling
- Ventilation: Required during processing
- Eye Protection: Safety glasses recommended
- Skin Protection: Thermal gloves for molten material
- Storage: Cool, dry, ventilated area
Environmental
- Disposal: Non-hazardous solid waste
- Recyclability: Resin code #5 (PP)
- Fire Fighting: Water spray, foam, CO₂
- Spill Response: Sweep up pellets to prevent slipping
Technical Excellence Redefined
LOTTE KOPELEN JM-350 represents a significant advancement in polypropylene impact copolymer technology. Its sophisticated polymer architecture, featuring optimized ethylene content, delivers the exceptional balance of stiffness and impact resistance that modern applications demand.
Key Advantages
- • Superior low-temperature impact performance
- • Excellent balance of stiffness and toughness
- • Medium flow grade for efficient processing
- • Broad regulatory compliance
- • Versatile application range
Critical Considerations
- • ASTM vs ISO standard variations
- • Continuous use temperature limit (65°C)
- • UL 94 HB flammability rating
- • Proper processing parameter selection
- • Design guidelines adherence
This comprehensive profile makes JM-350 an ideal choice for engineers and designers seeking a reliable, high-performance material for demanding applications across automotive, appliance, and industrial sectors.