Study of the structure conditions of modified phenol-formalidid oligomers on the penological composition

Recently, phenol-formaldehyde oligomers have been used in various fields, including as a binder in the production of composite materials, in the production of coatings, plastic products and other fields with various substances [1]. In our previous studies, we synthesized phenol formaldehyde oligomer modified on the basis of phenol-alcohol and hydroxyl-containing polyester-polyol synthesized in different molar ratios of formaldehyde to phenol [2].