Reactive building blocks for thermoset adhesives, coatings, and composites — bisphenol A, DGEBA liquid epoxy resin, and ethylene glycol resin intermediate — supplied for bulk formulation.
Epoxy and resin intermediates are the reactive building blocks that formulators convert into thermoset adhesives, sealants, coatings, and composite matrices. The core pair is bisphenol A (BPA, CAS 80-05-7) and the liquid epoxy resin it forms, bisphenol A diglycidyl ether (DGEBA, CAS 25068-38-6): BPA reacts with epichlorohydrin to make DGEBA, which then cures with an amine or anhydride hardener into a crosslinked network. Specify DGEBA grade by epoxy equivalent weight (EEW) so it matches your hardener stoichiometry.
DGEBA is the workhorse liquid epoxy; standard grades run an EEW near 182-192 g/eq, which sets how much hardener each batch needs. The genuine trade-off sits with BPA itself. It delivers the rigidity, adhesion, and chemical resistance epoxy buyers expect, but it carries regulatory scrutiny that bio-based or novolac alternatives do not. Where that scrutiny matters for your end use, qualify an alternative early; where performance and cost rule, BPA-based DGEBA stays the default. Confirm regulatory status for your application and jurisdiction.
Ethylene glycol (CAS 107-21-1) is the polyester-resin and glycol intermediate in this group, not an epoxy reactant. It serves as a diol for unsaturated polyester and alkyd resins and as the base for heat-transfer and antifreeze fluids. Buyers often source it alongside epoxy feedstocks for the same adhesive, composite, or process-fluid programs. Match grade to the end use rather than defaulting to one specification.
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