Poly(ether sulfone)s and poly(ether amide sulfone)s and methods of their preparation

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United States of America Patent

PATENT NO 9688818
SERIAL NO

15150962

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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.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bajjuri, Krishna M San Jose, US 6 24
Garcia, Jeannette M San Jose, US 123 382
Hedrick, James L Pleasanton, US 294 1240

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