The Effect of Oligoethers Based on Secondary Polyethylene Terephthalate and Oligopropylene Diol on the Properties of Novolac Compounds

The ability to apply PL oligoethers comprising secondary polyethylene terephthalate and oligopropylene diol for efficient modification of novolac oligomers is considered. The influence of modifiers on the properties of novolac C is studied. It is shown that the use of PL polymers as modifiers provides an increase in strength of foam materials of novolac phenol–formaldehyde oligomers by three to five times.