ABSTRACT
In the work [1], the dependences of PHE synthesis main characteristics, namely, reduced viscosity ηred and conversion degree Q, on synthesis temperature T were studied. It was found out, that T rising up to the definite limits influences favorably on the indicated process: a reaction rate rises, ηred and Q increase. This effect can be observed in the narrow enough range of T=333348 K. At T lower than 333 K PHE formation process decelerates sharply, that is due to insufficient activity of epoxy groups at low temperatures. At T > 353 K cross-linking processes proceed, which are due to the activity enhancement of secondary hydroxyls in polymer chain [1]. It is also supposed [1], that at the indicated temperatures of synthesis PHE branched chains formation is possible.
