Covestro DESMODUR® MD15120 +BAYTEC® D15 + BAYTEC® XL B, 70 A Polyurethane, MDI-Ester

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Covestro DESMODUR® MD15120 +BAYTEC® D15 + BAYTEC® XL B, 70 A Polyurethane, MDI-Ester
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Information provided by Covestro
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Physical Properties	Metric	English	Comments

Specific Gravity	1.01 g/cc	1.01 g/cc	BAYTEC® XL B
	1.15 g/cc	1.15 g/cc	DESMODUR® MD15120
	1.18 g/cc	1.18 g/cc	BAYTEC®D15
	1.20 g/cc	1.20 g/cc
Viscosity	30 cP	30 cP	BAYTEC® XL B
	390 cP	390 cP	BAYTEC®D15
	700 cP	700 cP	DESMODUR® MD15120

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	70	70	DIN 53505
	67 @Temperature 80.0 °C	67 @Temperature 176 °F	DIN 53505
	75 @Temperature -5.00 °C	75 @Temperature 23.0 °F	DIN 53505
Tensile Strength at Break	37.0 MPa	5370 psi	DIN 53504
Tensile Stress at Strain	0.900 MPa @Strain 10 %	131 psi @Strain 10 %	DIN 53504
Elongation at Break	440 %	440 %	DIN 53504
100% Modulus	2.70 MPa @Strain 100 %	392 psi @Strain 100 %	DIN 53504
200% Modulus	3.90 MPa @Strain 200 %	566 psi @Strain 200 %	DIN 53504
300% Modulus	6.60 MPa @Strain 300 %	957 psi @Strain 300 %	DIN 53504
Resilience	54	54	[%]; DIN 53512
Tear Strength	24.0 kN/m	137 pli	with nick; ISO 34-1
	49.1 kN/m	280 pli	without nick; ISO 34-1
Abrasion	30	30	[mm3]; ISO 4649
Compression Set	27 % @Temperature 70.0 °C, Time 79200 sec	27 % @Temperature 158 °F, Time 22.0 hour	ISO 815-1

Processing Properties	Metric	English	Comments
Processing Temperature	45.0 °C	113 °F	BAYTEC® XL B
	80.0 °C	176 °F	DESMODUR® MD15120
	80.0 °C	176 °F	BAYTEC®D15
Mold Temperature	100 °C	212 °F
Pot Life	6.25 min	6.25 min

Descriptive Properties
Appearance	solid		DESMODUR® MD15120
	solid		BAYTEC®D15
	solid		BAYTEC® XL B
Content	10.5-10.9%		NCO
	100		Parts by weight of prepolymer
	3.6		Parts by weight of BAYTEC® XL B
	85		Parts by weight of BAYTEC® D15

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PCOVEST0426 / 202209

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