Lubrizol
Estane® 54640 NAT 031 C
Estane 54640 NAT 031 C is an aromatic polyether-based thermoplastic polyurethane (TPU) developed for melt coating applications. This grade offers excellent flexibility, strong tensile performance and outstanding abrasion resistance. With a hardness of 87 Shore A and high elongation of 650%, it delivers a balanced combination of elasticity, durability and tear strength. The polyether-based chemistry supports good hydrolysis resistance and reliable long-term mechanical stability in coated systems.
Key Features:
- Aromatic polyether-based TPU
- Hardness: 87 Shore A
- High elongation (650%)
- Tensile strength: 40 MPa
- Strong tear resistance (56 kN/m)
- Excellent abrasion resistance (20 mm³)
- Low specific gravity (1.11 g/cm³)
- Designed for melt coating processes
Processing Form:
- Melt Coating
Processing Notes:
Dry at 70°C for 3–4 hours prior to processing using a dehumidifying dryer with a -40°C dew point.
Recommended roll temperatures:
Roll 1: 165°C
Roll 2: 175°C
Rubber Roll 3: Not heated
Refer to Lubrizol Advanced Materials processing guides for further details.
Purpose:
Abrasion resistance
Application:
Designed for melt coating processes
Delivery Form:
Pellets
Key Sustainability Features of Estane TPU
Bio-Based Content
The Estane ECO TPU series incorporates renewable materials, with bio-based content ranging from 20% to 69%, certified according to ASTM D6866.
Biomass Balance Approach
The Estane RNW TPU line utilizes mass-balanced biomass feedstocks, reducing reliance on fossil-based sources while maintaining the quality and performance of standard petroleum-based resins.
Reduced Carbon Footprint
Implementing sustainable feedstocks in Estane RNW TPU products has achieved up to a 59% reduction in product carbon footprint, contributing to lower greenhouse gas emissions.
Performance Consistency
TPUs deliver the same high-quality performance as traditional TPUs, ensuring that sustainability enhancements do not compromise material integrity.
