Lubrizol
Estane® 58123 NAT 055
Estane 58123 NAT 055 is an aromatic polyether-based thermoplastic polyurethane (TPU) with a hardness of 70 Shore A. This grade offers high moisture vapor transmission combined with low water swell and excellent low-temperature flexibility. With very high elongation (830%) and strong tear resistance, it provides an outstanding balance of elasticity, toughness and durability. The polyether-based chemistry ensures good hydrolysis resistance and stable mechanical performance in demanding environments.
Key Features:
- Aromatic polyether-based TPU
- Hardness: 70 Shore A
- High moisture vapor transmission
- Low water swell
- Excellent low-temperature flexibility
- Very high elongation (830%)
- Strong tear strength (54 kN/m unnicked)
- Good abrasion resistance (45 mm³)
- Low specific gravity (1.07 g/cm³)
Processing Form:
- Blown Film Extrusion
- Flat Die / Cast Film Extrusion
- Injection Molding
- Cable Jacketing
Processing Notes:
Dry at 80°C for 3–4 hours prior to processing using a dehumidifying dryer with a -40°C dew point.
Recommended starting extrusion temperatures: Zone 1: 170°C, Zone 2: 177°C, Zone 3: 182°C, Zone 4: 188°C, Adapter: 193°C, Die: 193°C, Die Tip: 193°C. Hopper cooling recommended. Refer to Lubrizol processing guides for detailed recommendations.
Purpose:
Hydrolysis Resistancy
Application:
Breathable, flexible and moisture-stable TPU applications
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.
