Currently, in the installation of the engineering systems of buildings and constructions, crosslinked polyethylenes (PEXs) are widely used for the cold and hot water supply and heating system piping. The world consumption of crosslinked polyethylenes for these purposes amounts to 55% and is continuing to grow (Figure 1). Crosslinked polyethylenes are produced by peroxide (PEXa), silanol (PEX-b), or radiation (PEX-c) methods [1-6].

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Composite materials based on epoxy-bisphenol A resin ED-20 are widely used in different areas of the national economy, in particular in construction. They are used as protective corrosion-resistant compositions, weatherresistant compositions, sealants, adhesives, and binders for composite materials. Depending on the service requirements, it is necessary to modify the available compositions or to develop new compositions with the necessary combination of properties.

Epoxy oligomers are among the most common types of binder, for some time have been widely used as the base material of adhesives, reinforced plastics, and coatings, and can be cured in a wide temperature range. Systems cured at room or reduced temperatures have a number of shortcomings associated with the limited choice of curing agents. The product of interaction between phenol, formaldehyde, and ethylenediamine-AF-2 [1]is the most commonly used cold curing agent.