Abstract
A new phenolic resin having aromatic diamine in the main chain was prepared by the thermal polymerization of p-phenylenediamine and 2, 6-bis (hydroxylmethyl) -p-cresol. The resin contains both amino linkages and dimethylene ether linkages, because the condensation proceeds between methylol groups as well as between an amino group and a methylol group. A branching structure on the nitrogen atoms was also confirmed, thus, the resin becomes easily crosslinked and insoluble in THF. Mark-Houwink-Sakurada viscosity equation for the resin was determined in a THF solution. The small values of the exponent a in MHS equation indicate that the conformation of the resins are considerably compact in THF.
