Co-operative video gophers

Polyesteramides based on PET and nylon 2,T

“…Caesium carbonate is used as a catalyst in alkylation [15] although little is known about its operating mechanism. It is predicted that caesium complexes with ethanediol instead of the ester carbonyl group, and thus facilitating nucleophilic attack.…”

Polyesteramides based on PET

“…It was found that the addition of a phosphorous compound such as triphenyl phosphate improved the color of PET, with the number of carboxyl acid end groups being lowered 22,23 . Cesium carbonate is used as a catalyst in alkylation 24 although little is known about its operating mechanism. It is predicted that cesium complexes with ethanediol instead of with the ester carbonyl group, by folding around the cesium atom, and thus facilitating nucleophilic attack.…”