Covestro Desmopan® 481 Polyurethane

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Covestro Desmopan® 481 Polyurethane
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Injection molding grade; free from plasticizers; grease and oil-resistant; low compression set; high elasticity; good heat resistance; easy release; Application; roller coating; Seals, membranes; Automotive engineering 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	81	ISO 868
Hardness, Shore D	30	ISO 868
Tensile Strength, Ultimate	36.8 MPa	200 mm/min; DIN 53504
Tensile Stress at Strain	1.30 MPa @Strain 10 %	200 mm/min; DIN 53504
	3.80 MPa @Strain 50 %	200 mm/min; DIN 53504
	5.20 MPa @Strain 100 %	200 mm/min; DIN 53504
	9.00 MPa @Strain 300 %	ISO 527-1/-2
	10.2 MPa @Strain 300 %	200 mm/min; DIN 53504
Elongation at Break	528 %	200 mm/min; DIN 53504
Tensile Modulus	0.0290 GPa @Temperature 60.0 °C	storage; ISO 6721-1,-4
	0.0300 GPa @Temperature 20.0 °C	storage; ISO 6721-1,-4
	0.106 GPa @Temperature -20.0 °C	storage; ISO 6721-1,-4
Rebound	48 %	Resilience; ISO 4662
Tear Strength	45.0 kN/m	ISO 34-1
Abrasion	25	mm³, Method A; ISO 4649
Compression Set	22 % @Temperature 23.0 °C	72 hr; ISO 815
	25 % @Temperature 70.0 °C	24 h; ISO 815
	17 % @Temperature 70.0 °C, Time 86400 sec	Method C; ISO 815-1

Processing Properties	Original Value	Comments
Melt Temperature	225 - 235 °C	Injection
Mold Temperature	20.0 - 40.0 °C	Injection
Ejection Temperature	50.0 °C

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PB09763 / 92603

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