TPU Covestro 5377A

TPU Covestro 5377A features anti‑microbial property and good hydrolysis resistance. It is an ester‑ether blended grade, combining mechanical strength of polyester TPU and hydrolysis resistance of polyether TPU. Its key strengths are anti‑microbial performance and improved hydrolysis resistance, making it suitable for applications requiring sanitary protection or humid‑environment service.

Main Applications

Cable sheaths, textile coatings, watch bands.

Physical Properties

Property Category	Item	Test Method	Condition	Typical Data	Unit
Physical Properties	Density	ISO 1183	23℃	1.14	g/cm³
	Shore A Hardness	ISO 868 / ISO 7619‑1	1 s / 3 s	77	Shore A
	Shore D Hardness	ISO 868 / ISO 7619‑1	1 s / 15 s	28	Shore D
Mechanical Properties	Tensile strength at break	DIN 53504 / ISO 527‑1‑3	200 mm/min	26‑27	MPa
	Elongation at break	DIN 53504 / ISO 527‑1‑3	200 mm/min	644‑740	%
	300% Modulus	DIN 53504 / ISO 527‑1‑3	200 mm/min	7.0‑8.9	MPa
	Tear strength	ISO 34‑1	500 mm/min	40	kN/m
	Abrasion loss	ISO 4649‑A	—	80	mm³
	Rebound resilience	ISO 4662	—	45	%
Thermal Properties	Tensile storage modulus	ISO 6721‑1,‑4	‑20℃	180	MPa
	Tensile storage modulus	ISO 6721‑1,‑4	20℃	29	MPa
	Tensile storage modulus	ISO 6721‑1,‑4	60℃	21	MPa
Long‑term Properties	Compression set	ISO 815	23℃,72h	20	%
	Compression set	ISO 815	70℃,24h	43‑50	%

Processing Parameters

Process	Parameter	Suggested Value	Unit
Pre‑drying	Temperature	80 (or ＜80)	℃
	Time	3	h
Injection molding	Melt temperature	180‑200	℃
	Mold temperature	20‑40	℃
Extrusion molding	Melt temperature	170‑190	℃

Note: All information above is for reference only!