Covestro DESMOPHEN® 651 MPA Polyurethane

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Covestro DESMOPHEN® 651 MPA Polyurethane
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Characterization: Branched hydroxyl-bearing polyester. As a co-reactant, usually with Desmodur® N 75, in the formulation of lightfast and weather-stable two-pack coatings. Properties / Applications: Desmophen® 651 MPA is mainly used as a co-reactant with Desmodur® N 75. This combination yields coatings with excellent lightfastness, gloss retention and weather stability. They also have very good resistance to chemicals and abrasion. Information provided by Covestro
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Physical Properties	Metric	English	Comments

Specific Gravity	1.11 g/cc	1.11 g/cc	DIN EN ISO 2811-2
Volatiles	34 - 36 %	34 - 36 %	(1 g resin/1 ml TCP*/1 h at 125 °C, convection oven); DIN EN ISO 3251
Viscosity	11000 - 18000 cP	11000 - 18000 cP	DIN EN ISO 3219/A.3

Chemical Properties	Metric	English	Comments
Acid Value	<= 3.0	<= 3.0	[mg KOH/g]; DIN EN ISO 2114

Thermal Properties	Metric	English	Comments
Flash Point	40.0 °C	104 °F	DIN EN ISO 1523

Processing Properties	Metric	English	Comments
Moisture Content	>= 0.10 %	>= 0.10 %	DIN 51 777/1

Descriptive Properties
Color	<100		Hazen, DIN EN 1557
Content	5.1-5.9%		Hydroxyl, DIN 53 240/2

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PCOVEST0736 / 202519

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