Covestro DESMODURE® N 3790 BA Polyurethane

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Covestro DESMODURE® N 3790 BA Polyurethane
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Characterization: Aliphatic polyisocyanate (high functional HDI trimer). As the hardener component for lightfast, rapid-drying polyurethane coating systems. Properties / Applications: Desmodur® N 3790 BA is used primarily as the hardener component for lightfast two-component polyurethane coatings with high resistance to chemicals and weathering, very good gloss retention and outstanding mechanical properties. Preferred co-reactants are polyacrylate or polyester polyols. The main applications for systems based on Desmodur® N 3790 BA are air- and force-drying coatings for automotive OEM, automotive refinishing, transportation, industrial finishing and plastics. Information provided by Covestro
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Physical Properties	Metric	English	Comments

Specific Gravity	1.13 g/cc	1.13 g/cc	DIN EN ISO 2811
Volatiles	9.0 - 11 %	9.0 - 11 %	2.2 g / 120 min / 100°C; DIN EN ISO 3251
Viscosity	1300 - 2300 cP	1300 - 2300 cP	DIN EN ISO 3219/A.3

Thermal Properties	Metric	English	Comments
Flash Point	42.0 °C	108 °F	DIN 53 213/1

Descriptive Properties
Color	<40		Hazen, DIN EN 1557
Content	<0.23		Monomeric HDI, DIN EN ISO 10 283
	17.3-18.3%		NCO, DIN EN ISO 11 909

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PCOVEST0562 / 202345

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