POLY(ETHER SULFONE)S AND POLY(ETHER AMIDE SULFONE)S AND METHODS OF THEIR PREPARATION

摘要

Poly(ether sulfones) (PES) and poly(ether amide sulfones) (PEAS) were prepared from post-consumer polycarbonates and polyesters, respectively, using a single vessel in batch mode (all reactants present when heating was initiated). The depolymerization of the initial polymer occurs concurrently with step growth polymerization to form a product polymer having a number average molecular weight of at least 5000.

主权项

1. A poly(ether amide sulfone) (PEAS), having a structure in accordance with formula (16):wherein
n is a positive number having an average value greater than or equal to 1, m is a positive number having an average value greater than or equal to 1, each E′ is an independent monovalent radical selected from the group consisting of hydrogen and electron withdrawing groups, each La is an independent divalent radical comprising 2 or more carbons, each Ld is an independent divalent radical comprising 2 or more carbons, each L′ is an independent divalent linking group comprising 1 or more carbons, Z′ is a first polymer chain end group, Z″ is a second polymer chain end group, and vertical stacking of the repeat units enclosed by parentheses within the square brackets indicates a random distribution of the repeat units in the structure of the PEAS.