Covestro Baytec® ME-120 Polyurethane

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Covestro Baytec® ME-120 Polyurethane
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Baytec ME-120 is a modified diphenylmethane diisocyanate (MDI)-terminated polyether prepolymer based on polytetramethylene ether glycol (PTMEG). Properties / Applications: Baytec ME-120 is a modified diphenylmethane diisocyanate (MDI)-terminated polyether prepolymer based on polytetramethylene ether glycol (PTMEG). This prepolymer can be processed at room temperature with a variety of polyols and chain extender blends. It is used in the formulation of high-performance hot cast and one-shot cast elastomers. As with any product, use of Baytec ME-120 prepolymer in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability. Information provided by Covestro
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Physical Properties	Metric	English	Comments

Specific Gravity	1.08 g/cc @Temperature 65.0 °C	1.08 g/cc @Temperature 149 °F
	1.09 g/cc @Temperature 25.0 °C	1.09 g/cc @Temperature 77.0 °F
Viscosity	505 cP @Temperature 65.0 °C	505 cP @Temperature 149 °F
	1000 cP @Temperature 45.0 °C	1000 cP @Temperature 113 °F
	2500 cP @Temperature 30.0 °C	2500 cP @Temperature 86.0 °F
	4060 cP @Temperature 25.0 °C	4060 cP @Temperature 77.0 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	45	45	ASMT D2240
Tensile Strength at Break	34.1 MPa	4950 psi	ASTM D412
Elongation at Break	447 %	447 %	ASTM D412
Resilience	45	45	Bayshore; ASTM D2632
Tear Strength	53.6 kN/m	306 pli	Split; ASTM D1938
	144 kN/m	823 pli	Die C; ASTM D624
Taber Abrasion, mg/1000 Cycles	15 @Load 1.00 kg	15 @Load 2.20 lb	H-18 Wheel; ASTM D3489
Compression Set	27 %	27 %	ASTM D395-B

Thermal Properties	Metric	English	Comments
Flash Point	248 °C	478 °F	PMCC

Descriptive Properties
Appearance	Pale yellow liquid
Content	12.2-12.8%		NCO

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PCOVEST0247 / 202030

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