Evonik VESTAMIN® A 139 Epoxy Curing Agent

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Evonik VESTAMIN® A 139 Epoxy Curing Agent
Categories:	Other Engineering Material; Additive/Filler for Polymer; Polymer; Thermoset; Epoxy; Epoxy Cure Resin
Material Notes:	VESTAMIN A 139 is a liquid, blocked crosslinker for polyisocyanate resins based on a cycloaliphatic diamine. The product exhibits a very low reactivity towards isocyanate groups. The crosslinking with polyisocyanate resins occurs under the influence of moisture by releasing the original diamine, which is spontaneously reacting with the isocyanate groups under formation of urea structures.
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Physical Properties	Original Value	Comments

Density	0.860 g/cc @Temperature 25.0 °C	DIN 51 757
Viscosity	20 - 30 cP @Temperature 23.0 °C	DIN EN ISO 3219

Thermal Properties	Original Value	Comments
Flash Point	77.0 °C	DIN 51 758
	130 °C	DIN 51 584
Ignition Temperature	240 °C	DIN 51 794

Descriptive Properties
Amine Equivalent Weight (g/val)	140
Amine Number (mg KOH/g)	390-410	DIN ISO 3771
Hazen Color Index, max	150	DIN EN ISO 6271

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