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Novozym 435-catalyzed synthesis of polyetheramides from amino-esters, or diesters and diamines built on ethylene- and diethylene- glycol moieties

Abstract : The optimization of CAL-B-promoted (Novozym 435) A/B and AA/BB type polymerizations leading to polyetheramides, from amino ethylesters or diethyl esters and diamines based on ethylene- or diethylene-glycol moieties, is disclosed herein. From these preliminary experiments it became obvious that it is of prime importance: to avoid the presence of water by carefully drying the enzyme prior to use; to eliminate ethanol from the reaction medium, by working under reduced pressure in order to drive the amidation reaction forward; to select an appropriate high boiling solvent, the best choice being diphenyl ether. Under such experimental conditions, polyetheramides were obtained in 70e80% yield with an average degree of polymerization (DPn) up to 17.
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https://hal-amu.archives-ouvertes.fr/hal-01412495
Contributor : Stéphane Gastaldi <>
Submitted on : Tuesday, December 13, 2016 - 8:39:53 AM
Last modification on : Wednesday, October 14, 2020 - 3:49:40 AM

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Florent Poulhès, Dominique Mouysset, Gérard Gil, Michèle P. Bertrand, Stéphane Gastaldi. Novozym 435-catalyzed synthesis of polyetheramides from amino-esters, or diesters and diamines built on ethylene- and diethylene- glycol moieties. Polymer, Elsevier, 2012, 53 (6), pp.1172 - 1179. ⟨10.1016/j.polymer.2012.01.054⟩. ⟨hal-01412495⟩

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