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LG Chem LC670 is an ethylene-1-octene copolymer POE produced by metallocene process, with excellent low-temperature impact modification ability, flexibility and processability, stable performance in a wide temperature range. It can effectively improve the comprehensive mechanical properties of polyolefin substrates and is suitable for multi-process molding and multi-scenario applications.
High elasticity and wear resistance, excellent elasticity and outstanding wear resistance, enabling products to maintain high performance and long service life
Good comprehensive weather stability, excellent heat and cold resistance, chemical stability, no performance attenuation in a wide temperature range
Wide processing adaptability, good melt fluidity, suitable for forming various products through multiple processing technologies with excellent mold fillability
Low crystallinity and high fluidity, smooth flow during molding, combined with uniform surface viscosity, stable performance in processing
Balanced mechanical properties, high elongation with moderate hardness and modulus, both elasticity and structural stability
Photovoltaic Sealant: Core material for photovoltaic module encapsulation, excellent weather resistance, providing reliable protection for modules
Automotive Parts: Elastic components for interior and exterior (seals, shock absorbers), high elasticity for shock absorption, temperature and aging resistant
Wires & Cables: Insulation and sheathing materials, good flexibility and durability, meeting various wiring protection requirements
Medical Equipment: High-elastic medical components, meeting biocompatibility requirements and complying with medical field application standards
Home Appliances & Consumer Electronics: Sealing rings, shock pads, electronic component housings, high elasticity and wear resistance, improving product use stability
| Physical Properties | |
| Density | 0.877 g/cm³ |
| Shore A Hardness | 73 (ASTM D2240) |
| Shore D Hardness | 21 (ASTM D2240) |
| Thermal Properties | |
| Glass Transition Temperature (Tg) | -49 °C |
| Melt Flow Properties | |
| Melt Flow Rate (190°C/2.16kg) | 5 g/10 min (ASTM D1238) |
| Mechanical Properties | |
| Tensile Strength (500mm/min) | 7 MPa (ASTM D638) |
| Elongation at Break (500mm/min) | >1000 % (ASTM D638) |
| Flexural Modulus (1%Secant,Press sheet) | 15 MPa (ASTM D790) |
| Tear Strength (Type C) | 45 kN/m (ASTM D624) |
Q1: What is the primary function of LG Chem LC670 in polymer formulations?
A: LC670 is a core-shell acrylic impact modifier designed to significantly enhance the toughness and ductility of rigid thermoplastics—particularly PVC, polycarbonate, and PC/ABS blends—without compromising clarity or processability.
Q2: Is LC670 compatible with heat-sensitive polymers like unplasticized PVC (uPVC)?
A: Yes, LC670 exhibits excellent thermal stability during standard extrusion and injection molding processes for uPVC, supporting consistent dispersion and minimal degradation under typical processing conditions.
Q3: How does LC670 compare to traditional MBS-type impact modifiers in terms of weathering resistance?
A: Unlike many MBS modifiers, LC670 features an acrylic-based shell structure that provides inherently superior UV and long-term weathering resistance—making it well-suited for outdoor applications where color retention and surface integrity are critical.
Q4: What is the typical dosage range for LC670 in rigid PVC formulations?
A: Dosage depends on the target impact performance and base resin characteristics, but LC670 is typically used at low concentrations—generally ranging from 0.1% to 2% by weight—relative to the total polymer matrix.
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