Covestro Baytec® SPR-092A Polyurethane

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Covestro Baytec® SPR-092A Polyurethane
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Characterization: Baytec SPR-092A is a two-component, 100%-solids spray system with a Shore A hardness of 92. Properties / Applications: Baytec SPR-092A is a two-component, 100%-solids spray system with a Shore A hardness of 92. The isocyanate component is a modified diphenylmethane diisocyanate (MDI) prepolymer, and the polyol component is a polyether polyol blend. The system has added UV stabilizers and is used in spray applications to improve the corrosion, weather, and abrasion resistance of various surfaces. In-mold application is also possible. Typical applications include protective layers for pipes, tanks, fabrics, wood, flexible foams, and other industrial surfaces. The system can be pigmented to almost any color. As with any product, use of the Baytec SPR-092A system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability. Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	1.04 g/cc	Polyol
	1.083 g/cc	ASTM D792
	1.09 g/cc	Isocyanate
Water Absorption	1.5 % @Time 2.59e+6 sec
Viscosity	1500 cP	Polyol
	2500 cP	Isocyanate

Mechanical Properties	Original Value	Comments
Hardness, Shore A	92	ASTM D2240
Tensile Strength at Break	15.2 - 15.9 MPa	ASTM D412
Elongation at Break	490 - 580 %	ASTM D412
Tear Strength	110 - 130 pli	Split Tear; ASTM D1938
	340 - 410 pli	Die C; ASTM D624
Taber Abrasion, mg/1000 Cycles	150 @Load 1.00 kg	H-18; ASTM D4060

Thermal Properties	Original Value	Comments
Flash Point	179 °C	Polyol
	216 °C	Isocyanate

Processing Properties	Original Value	Comments
Gel Time	0.200 - 0.250 min

Descriptive Properties
Appearance	White liquid	Polyol
	Yellowish liquid	Isocyanate
Content	9.8%	NCO, Isocyanate
Hydroxyl number	[mg KOH/g], Polyol

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PCOVEST0264 / 202047

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