Covestro Desmopan® 3491A Polyurethane

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Covestro Desmopan® 3491A Polyurethane
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Extrusion- and injection molding grade; suitable for extrusion blow molding; high mechanical strength; high melt stability; Application; blow molding; Profiles; 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	1.20 g/cc	ISO 1183

Mechanical Properties	Original Value	Comments
Hardness, Shore A	92	ISO 868
Hardness, Shore D	40	ISO 868
Tensile Strength, Ultimate	54.1 MPa	200 mm/min; DIN 53504
Tensile Stress at Strain	3.90 MPa @Strain 10 %	200 mm/min; DIN 53504
	7.40 MPa @Strain 50 %	200 mm/min; DIN 53504
	8.90 MPa @Strain 100 %	200 mm/min; DIN 53504
	25.8 MPa @Strain 300 %	200 mm/min; DIN 53504
Elongation at Break	498 %	200 mm/min; DIN 53504
Tensile Modulus	0.0590 GPa @Temperature 60.0 °C	storage; ISO 6721-1,-4
	0.0940 GPa @Temperature 20.0 °C	storage; ISO 6721-1,-4
	0.515 GPa @Temperature -20.0 °C	storage; ISO 6721-1,-4
Rebound	36 %	Resilience; ISO 4662
Tear Strength	100 kN/m	500 mm/min; ISO 34-1
Abrasion	25	mm³, Method A; ISO 4649
Compression Set	20 % @Temperature 23.0 °C	72 hr; ISO 815
	50 % @Temperature 70.0 °C	24 hr; ISO 815

Processing Properties	Original Value	Comments
Melt Temperature	180 - 210 °C	Extrusion
	190 - 210 °C
Mold Temperature	20.0 - 40.0 °C
Drying Temperature	80.0 °C

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PB09792 / 92632

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