Erisys GE-21 1,4-Butanediol diglycidyl ether 2425-79-8 CVC Solvents >> Ethers & Ethers-alcohols Epoxy (EP) ADHESIVE ERISYS â GE-21 1,4-Butanedial Diglycidyl Ether Aliphatic Difunctional Epoxy Reactive Diluent ERISYS GE-21, epoxidized Butanediol, is a low viscos-ity, aliphatic, diepoxide. It is intended for use as a reac-tive 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 effi-cient in viscosity reduction as the aliphatic mono- func-tional 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 (see graphs and table below). The difunctionality of GE-21 helps to produce formulations with improved chemical and heat resis-tance compared to formulations containing monofunc-tional diluents. GE-21 does not effect the pot life of precatalyzed epoxy resin/acid anhydride formulations. Formulations con-taining GE-21 exhibit excellent wettability making them ideal candidates for composite and impregnation appli-cations. 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. Filament Winding Concrete/Civil Engineering Adhesives Laminating/Assembly Adhesives Structural Adhesives Vacuum Pressure Impregnation (VPI) Electronic Encapsulants Flooring Low viscosity, aliphatic, diepoxide, epoxidized butanediol. Used as a reactive diluent for high viscosity epoxy resins in adhesives. Possesses compatibility at all concentrations with those resins and any epoxy resin curing agent. Improves chemical and heat resistance. Does not effect pot life of precatalyzed epoxy resin/acid anhydride formulations. Provides very good wettability, low moisture, hydrolyzable chloride and residual epichlorohydrin contents and very low color. Applications : concrete, civil engineering, laminating, assembly and structural adhesives.