Solvay Specialty Polymers Usa, LLC

Hemantkumar Patel

Mohammad Jamal El-Hibri

Chantal Louis

David B Thomas

A poly(arylether sulfone) polymer [(t-PAES) polymer, herein after], wherein more than 70% moles of the recurring units are recurring units (R) of formula (St): -E-Ar&#x2014;S0-[Ar-(T-Ar)&#x2014;SO]m-Ar&#x2014; (formula S) wherein: n and m, equal to or different from each other, are independently zero or an integer of 1 to 5, each of Ar, Ar, Arand Arequal to or different from each other and at each occurrence, is an aromatic moiety, T is a bond or a divalent group optionally comprising one or more than one heteroatom; -E is of formula (E), wherein each of R', equal to or different from each other, is selected from the group consisting of halogen, alkyl, alkenyl, alkynyl, aryl, ether, thioether, carboxylic acid, ester, amide, imide, alkali or alkaline earth metal sulfonate, alkyl sulfonate, alkali or alkaline earth metal phosphonate, alkyl phosphonate, amine and quaternary ammonium; j&#x2032; is zero or is an integer from 1 to 4, and said (t-PAES) polymer having a number average molecular weight (M) ranging from 41 000 to 90 000. 

Polyarylene ether sulfone (PAES) polymers

A poly(arylether sulfone) polymeric material comprising polymer molecules wherein more than 50% moles of the recurring units of said polymer molecules are recurring units (Rt), equal to or different from each other, complying with formula (S): -E-Ar&#x2014;S0-[Ar-(T-Ar)&#x2014;S0]-Ar&#x2014; (formula S) wherein: n and m, equal to or different from each other, are independently zero or an integer of 1 to 5, each of Ar, Ar, Arand Arequal to or different from each other and at each occurrence, is an aromatic moiety, T is a bond or a divalent group optionally comprising one or more than one heteroatom&#x2014;E is of formula (E): wherein each of R', equal to or different from each other, is selected from the group consisting of halogen, alkyl, alkenyl, alkynyl, aryl, ether, thioether, carboxylic acid, ester, amide, imide, alkali or alkaline earth metal sulfonate, alkyl sulfonate, alkali or alkaline earth metal phosphonate, alkyl phosphonate, amine and quaternary ammonium; j&#x2032; is zero or is an integer from 1 to 4; and wherein the fraction of polymer molecules having a molecular weight of below 5 000 [% fraction M, hereinafter] with respect to all the polymer molecules in said polymeric material is of at most 10% weight, and wherein said % fraction Mis of at least [3.02-PDI] % when the polymeric material possesses a polydispersity index (PDI) of below 3.02. 

Growing community of inventors

Alpharetta, GA, United States of America

Hemantkumar Patel