Lubrizol
Estane® 91F88 EXP
Estane 91F88 EXP is an aliphatic polycaprolactone-based thermoplastic polyurethane (TPU) with a hardness of 90 Shore A. This clear resin provides excellent colour stability upon UV exposure, making it suitable for applications requiring long-term transparency and aesthetic stability. It offers strong tensile performance (40–45 MPa), high elongation (500–550%) and good abrasion resistance. Estane 91F88 EXP combines toughness and flexibility with reliable extrusion processing stability.
Key Features:
- Aliphatic polycaprolactone-based TPU
- Hardness: 90 Shore A
- Clear resin with excellent UV colour stability
- High tensile strength (40–45 MPa)
- High elongation (500–550%)
- Good abrasion resistance (35 mm³)
- Low moisture content requirement (<0.02% before processing)
Processing Form:
- Cast Film Extrusion
- Profile Extrusion
Processing Notes:
Dry at 60°C for 4 hours prior to processing using a vacuum or dehumidifying dryer with a -40°C dew point. Maximum moisture level should not exceed 0.02%.
Recommended extrusion temperature profile: Zone 1: 165–175°C, Zone 2: 175–185°C, Zone 3: 175–185°C, Zone 4: 185–195°C, Adapter: 185–195°C, Die zones: 190–200°C.
Purpose:
UV Colour Stability
Application:
Developed for applications requiring long-term transparency and aesthetic stability
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.
