Kinetics of epoxy resins formation from bisphenol-A, tetrabromobisphenol-A, and epichlorohydrin

✍ Scribed by Jungang Gao

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 343 KB
• Volume: 49
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1993.070491117

✦ Synopsis

The kinetics of formation of epoxy resins derived from bisphenol-A, tetrabromobisphenol-A, and epichlorohydrin under stoichiometric conditions was considered. The kinetics of reaction was studied by taking into account the consumption of the added alkali and epoxide group of epoxide oligomers. The obtained results satisfactorily explained that the reactivity of bisphenol-A with epichlorohydrin is higher than that of tetrabromobisphenol-A. The rate of dehydrochlorination of chlorohydrin ether in the presence of alkali and water is much higher than that of the rate of condensation of phenolic hydroxyl group with epichlorohydrin. The apparent reaction order of phenolic groups with epichlorohydrin and terminal epoxide groups in the oligomer are second order. The rate constants and reaction activation energy were determined. The results are discussed.