ERISYS® GE-21
ERISYS GE-21, epoxidized Butanediol, is a low viscosity, aliphatic, diepoxide. It is intended for use as a reactive diluent for high viscosity epoxy resins. GE-21 is compatible at all concentrations with those resins and resin/diluent blends can be cured using any epoxy resin curing agent. As a result of its chemical structure GE-21 is not as efficient in viscosity reduction as the aliphatic monofunctional reactive diluents ERISYS GE-5, GE-6, GE-7, and GE-8. However, the performance properties of epoxy formulations diluted with GE-21 are modified to a lesser degree than those of systems containing the aliphatic monofunctional diluents. Depending on concentration, properties such as gel time, strength, and modulus of a GE-21 diluted formulation remain relatively unchanged compared to an undiluted resin. The difunctionality of GE-21 helps to produce formulations with improved chemical and heat resistance compared to formulations containing monofunctional diluents. GE-21 does not affect the pot life of precatalyzed epoxy resin/acid anhydride formulations. Formulations containing GE-21 exhibit excellent wettability making them ideal candidates for composite and impregnation applications. GE-21 has low moisture, hydrolyzable chloride and residual epichlorohydrin contents. Its exceptionally low color makes GE-21 the diluent of choice in color critical applications.

Typical Properties | Values |
---|---|
EEW, g/eq | 120-130 |
Viscosity, cps | 10-18 @25°C |
Color, Max | 100 (APHA) |
Hydrolyzable Chloride, Max % | 0.10 |
Residual Epichlorohydrin, Max ppm | 10 |
Weight per Gallon, @25°C lbs. | 9.2 +/- 0.1 |
Flash Point, °C (°F) | >110 (230) |
To obtain a Safety Data Sheet (SDS) please contact Global_Product_EHS_AdMat@huntsman.com
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Application Group | Application | Description |
---|---|---|
Composites | Tooling and Laminating 2K Epoxy Systems | Reactive diluent providing viscosity reduction, retention of thermal and physical properties. |