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.
• ERISYS® GE-21 epoxidized Butanediol 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 ERISYS® GE-21 epoxidized Butanediol is not as efficient in viscosity reduction as the aliphatic monofunctional reactive diluents ERISYS® GE-5, GE-6, GE7, and GE-8. However, the performance properties of epoxy formulations diluted with ERISYS® 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 an ERISYS® GE-21 epoxidized Butanediol diluted formulation remains relatively unchanged compared to an undiluted resin.
• The difunctionality of ERISYS® GE -21 epoxidized Butanediol helps to produce formulations with improved chemical and heat resistance compared to formulations containing monofunctional diluents.
• ERISYS® GE-21 epoxidized Butanediol does not affect the pot life of precatalyzed epoxy resin/acid anhydride formulations. Formulations containing this product exhibit excellent wettability making them ideal candidates for composite and impregnation applications.
• ERISYS® GE-21 epoxidized Butanediol has low moisture, hydrolyzable chloride and residual epichlorohydrin contents. Its exceptionally low color makes it the epoxidized Butanediol diluent of choice in color critical applications.

• Filament Winding
• Concrete/Civil Engineering Adhesives
• Laminating/Assembly Adhesives
• Structural Adhesives
• Vacuum Pressure Impregnation (VPI)
• Electronic Encapsulants
• Flooring

The use of ERISYS® GE-21 epoxidized Butanediol will affect the handling and cured properties of resin formulations. The effects of these changes are shown below.

• Viscosity and Pot life

• Tg and Moisture Pickup

• Tensile Properties

The effect of ERISYS® GE-21 epoxidized Butanediol on the cured properties of liquid epoxy resin (EEW 188) cured with TETA.

• Flexural Properties

• Hardness and Compressive Strength

• ERISYS® GE-21 Resin should be stored in a dry place, in the sealed original containers, at temperatures between +2°C and +40°C (+35.6°F and +104°F).
• Under these storage conditions, the product has a shelf life of 24 months (from date of manufacture).
• The products should not be exposed to direct sunlight.