Vi. Nedelkin et al., STRUCTURE OF OLIGOMERIC POLYCONDENSATION PRODUCTS OF PHENOL WITH ELEMENTARY SULFUR, Vysokomolekularnye soedinenia. Seria A, 38(4), 1996, pp. 719-723
The molecular weight distribution, the nature of sulfide bonds, the su
bstitution mode in aromatic rings, and other characteristics of oligom
eric polycondensation products of phenol with sulfur in the alkaline m
edium were studied. The structure and principal properties of the phen
ol-sulfide oligomers are closely analogous to those of the novolac-typ
e phenol-formaldehyde resins.