Covestro Desmopan® 9873DU Polyurethane

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Covestro Desmopan® 9873DU Polyurethane
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	injection molding grade very good hydrolysis and microbial resistance very good low-temperature impact strength Application Boot shells Injection molded engineering parts As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
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Physical Properties	Original Value	Comments

Density	1.18 g/cc	ISO 1183

Mechanical Properties	Original Value	Comments
Hardness, Shore A	98	ISO 868
Hardness, Shore D	71	ISO 868
Tensile Strength, Ultimate	53.0 MPa	200 mm/min; DIN 53504
Tensile Stress at Strain	34.0 MPa @Strain 10 %	200 mm/min; DIN 53504
	34.0 MPa @Strain 50 %	200 mm/min; DIN 53504
	35.0 MPa @Strain 100 %	200 mm/min; DIN 53504
	47.0 MPa @Strain 300 %	200 mm/min; DIN 53504
Elongation at Break	342 %	200 mm/min; DIN 53504
Tensile Modulus	0.486 GPa @Temperature 60.0 °C	storage; ISO 6721-1,-4
	1.035 GPa @Temperature 20.0 °C	storage; ISO 6721-1,-4
	1.49 GPa @Temperature -20.0 °C	storage; ISO 6721-1,-4
Flexural Modulus	1.04 GPa	2 mm/min; ISO 178
Rebound	66 %	Resilience; ISO 4662
Tear Strength	203 kN/m	500 mm/min; ISO 34-1
Abrasion	56	mm3, Method A; ISO 4649
Compression Set	60 % @Temperature 23.0 °C	72 hr; ISO 815
	61 % @Temperature 70.0 °C	24 hr; ISO 815

Processing Properties	Original Value	Comments
Melt Temperature	225 - 235 °C	Injection
Mold Temperature	40.0 - 60.0 °C	Injection
Drying Temperature	110 °C

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PB09824 / 92664

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