Hytrel® TPC-ET 4039 ECO-B 652

Hytrel TPC-ET 4039 ECO-B 652 is a low-modulus thermoplastic polyester elastomer (TPC-ET) with a nominal hardness of 40D and high fluidity. It contains a non-discoloring stabilizer and matches the performance and processing behavior of standard Hytrel 4039. This ECO-B grade is partially produced using bio-feedstock derived from waste according to the ISCC Plus mass balance approach, resulting in reduced lifecycle greenhouse gas emissions and lower fossil resource use. Hytrel TPC-ET 4039 ECO-B 652 combines excellent toughness, fatigue resistance, flexibility at low temperatures and good retention of properties at elevated temperatures.

Key Features:

• Low modulus with high flexibility
• High fluidity for easy processing
• Excellent impact, fatigue and creep resistance
• Good resistance to oils, solvents and industrial chemicals
• Non-discoloring stabilizer for improved color stability
• Partially bio-based (ECO-B) via ISCC Plus mass balance method
• Plasticizer-free with long-term property retention

Processing Form:

• Injection Molding
• Thermoforming
• Coating
• Casting

Processing Notes:
Drying is recommended at 100°C for 2–3 hours to achieve a processing moisture content below 0.08%. Hytrel TPC-ET 4039 ECO-B 652 has an optimal melt temperature of 225°C and a mold temperature of 40°C. For profile extrusion, drying at 100°C for 2–3 hours with a moisture target below 0.06% is recommended, with an optimal melt temperature of 215°C. Hytrel is incompatible with acetal and PVC. Please refer to the injection molding and extrusion guidelines for further details.