OLIGOMERIZATION OF PHENYLGLYCIDYLETHER

Reactions taking place between phenylglycidylether (PGE) and piperidin e (PP), and PGE and 1-(N-piperidinyl)-3-phenoxy-2-propanol (TAA) were followed by means of nuclear magnetic resonance (NMR) spectroscopy. Fo r an equimolar mixture of PGE and PP, reaction was limited to the addi tion of PP to PGE. The structure of this reaction product (TAA) was de termined by H-1 and C-13 NMR spectroscopy. In the presence of an exces s of PGE homopolymerization occurred. Two different oligomers (P-1 and (2),) were obtained as reaction products and their structures were st udied. During the progress of the reaction, the molar ratio [P-1]/[P-2 ] was measured and as a result [P-2] was greater than [P-1] over the e ntire reaction time. This finding was explained by the importance of t he transfer reaction in the homopolymerization of PGE. When an excess of PGE was used in the PGE-TAA reaction, the product was similar to th at of the PGE-PP reaction.