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Kinetics of epoxy resins formation from bisphenol‐A, tetrabromobisphenol‐A, and epichlorohydrin
Author(s) -
Gao Jungang
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070491117
Subject(s) - epichlorohydrin , tetrabromobisphenol a , epoxide , bisphenol a , epoxy , chemistry , polymer chemistry , kinetics , reaction rate constant , reactivity (psychology) , diglycidyl ether , organic chemistry , bisphenol , alkali metal , fire retardant , catalysis , medicine , physics , alternative medicine , pathology , quantum mechanics
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. © 1993 John Wiley & Sons, Inc.