4,4'-Dihydroxydiphenylsulfone-phenyldichlorophosphine oxide polymer, SRU;Bis(4-hydroxyphenyl) sulfone-phenylphosphonic acid dichloride copolymer, SRU;Bis(4-hydroxyphenyl) sulfone-phenylphosphonic dichloride polymer, SRU;Bis(4-hydroxyphenyl) sulfone-phenylphosphoryl dichloride polymer;polysulfonyldiphenylenephenyl phosphonate;
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