Covestro Desmodur® MS-242 + Baytec XL B, 85 A Polyurethane, MDI- Ester

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Covestro Desmodur® MS-242 + Baytec XL B, 85 A Polyurethane, MDI- Ester
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Characteristics: Properties: Excellent wear and tear resistance Superior tensile strength & elongation Good solvent resistance Low compression set Comments: Suitable for forklift tires, sheet goods, wheels, & rollers Suitable for sprocket wheels & die-cut pads Ideal for gaskets & seals Excellent general purpose elastomer Improved temperature resistance with HQEE Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	1.18 g/cc	Desmodur MS-242
Viscosity	8.0 cP	Baytec XL B
	1460 cP	Desmodur MS-242

Mechanical Properties	Original Value	Comments
Hardness, Shore A	85	ASTM D2240
Tensile Strength at Break	49.3 MPa	ASTM D412
Elongation at Break	575 %	ASTM D412
100% Modulus	0.00572 GPa @Strain 100 %	ASTM D412
200% Modulus	0.00838 GPa @Strain 200 %	ASTM D412
300% Modulus	0.0121 GPa @Strain 300 %	ASTM D412
Resilience	32	[%], Bayshore; ASTM D2632
Tear Strength	252 pli	Die C; ASTM D624
	300 pli	Split; ASTM D1938
Taber Abrasion, mg/1000 Cycles	30 @Load 1.00 kg	H-18 wheel; ASTM D4060
Compression Set	24 % @Temperature 70.0 °C, Time 79200 sec	ASTM D395-B

Processing Properties	Original Value	Comments
Processing Temperature	60.0 °C	Baytec XL B
	80.0 °C	Desmodur MS-242
Mold Temperature	110 °C
Pot Life	3.00 - 7.00 min

Descriptive Properties
Appearance	liquid	Baytec XL B
	solid	Desmodur MS-242
	solid	Baytec XL HQEE
Content	0.034	Dabco33LV catalyst at 0.5 % by weight of 1,4-BDO
	100	Parts by weight of Desmodur MS-242 prepolymer
	45 EW	NCO, Baytec XL B
	6.45-6.74%	NCO, Desmodur MS-242
	6.73	Parts by weight of Baytec XL B
	99 EW	NCO, Baytec XL HQEE

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PCOVEST0504 / 202287

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