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- W2046425167 abstract "A kinetic study was made on the reactions of phthaloyl chloride labeled with C/sup 14/ in the carboxyl position with piperazine (polyamidation) and with 4,4' -isopropylidenediphenol (polyesterification). Phthaloyl chloride was dissolved in CCl/sub 4/ and the other reactant in basic aqueous solution, and the reactions were initiated by emuisifylng the phases. The results show that bcth reactions at 0 deg C follow second-order kinetics throughout, whereas at 30 and 50 deg C they appear to decrease in rats beyond 80 to 90% reaotion, and that the reaction rate depends on the reactant proportions. The apparent activation energies are 1.18 and 1.01 kcal/mole for the polyamidation and polyesterification reactions, respectively. No experimental isotope effect was observed in either reaction, whereas an isotope effect of 0.950 was observed in the monoamidation reaction of benzoyl chloride with morpholihe. The first step in the mechanism appears to be migration of the difunctional amine or alcohol from the aqueous phase into the CCl/sub 4/ phass, with polymerizatior occurring in the CCl/sub 4/ phase near the interface. (D.L.C.)" @default.
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- W2046425167 date "1962-04-01" @default.
- W2046425167 modified "2023-09-27" @default.
- W2046425167 title "A study of the mechanism of interfacial polyamidation and polyesterification" @default.
- W2046425167 doi "https://doi.org/10.1002/pol.1962.1205816694" @default.
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