Acid Catalyzed Reactions of 3-Phenoxypropylene Diacetate and 3-Phenoxypropyl Acetate with Formaldehyde

Abstract

The reactions of 3-phenoxypropylene diacetate (P0Ac2), and 3-phenoxypropyl acetate (POAc) with formaldehyde (F) catalyzed by perchloric acid have been carried out in acetic acid, and the influence of the reaction conditions on the molecular weight of the formed resins has been investigated. The molecular weights of the POAc2 and POAc. resins formed in the mole ratio of 1.2. (F/P) at 90° C were found to be 3300 and 5020, respectively.
The reactions of the Monomers and their resin model compounds with F have been kinetically studied by measuring the consumed amount of F, and the initial rate was found to be expressed by the equation:
where P=P0Ac2, 3-(p-tolvloxy)propylene diacetate (TOAc2)
The values of the rate constant (k) and the activation energy for POAc2, POAc, TOAc2, and 3- (p-tolyloxy)propyl acetate (TOAc) are listed in Table 4.
The curves of consumed amount of F in the reactions of the dimeric compounds of POAc and TOAc with F differ from those of the monomers.